// SPDX-License-Identifier: GPL-2.0
/*
* numa . c
*
* numa : Simulate NUMA - sensitive workload and measure their NUMA performance
*/
#include <inttypes.h>
#include <subcmd/parse-options.h>
#include "../util/cloexec.h"
#include "bench.h"
#include <errno.h>
#include <sched.h>
#include <stdio.h>
#include <assert.h>
#include <debug.h>
#include <malloc.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <linux/kernel.h>
#include <linux/time64.h>
#include <linux/numa.h>
#include <linux/zalloc.h>
#include "../util/header.h"
#include "../util/mutex.h"
#include <api/fs/fs.h>
#include <numa.h>
#include <numaif.h>
#ifndef RUSAGE_THREAD
# define RUSAGE_THREAD 1
#endif
/*
* Regular printout to the terminal , suppressed if - q is specified :
*/
#define tprintf(x...) do { if (g && g->p.show_details >= 0 ) printf(x); } while (0 )
/*
* Debug printf :
*/
#undef dprintf
#define dprintf(x...) do { if (g && g->p.show_details >= 1 ) printf(x); } while (0 )
struct thread_data {
int curr_cpu;
cpu_set_t *bind_cpumask;
int bind_node;
u8 *process_data;
int process_nr;
int thread_nr;
int task_nr;
unsigned int loops_done;
u64 val;
u64 runtime_ns;
u64 system_time_ns;
u64 user_time_ns;
double speed_gbs;
struct mutex *process_lock;
};
/* Parameters set by options: */
struct params {
/* Startup synchronization: */
bool serialize_startup;
/* Task hierarchy: */
int nr_proc;
int nr_threads;
/* Working set sizes: */
const char *mb_global_str;
const char *mb_proc_str;
const char *mb_proc_locked_str;
const char *mb_thread_str;
double mb_global;
double mb_proc;
double mb_proc_locked;
double mb_thread;
/* Access patterns to the working set: */
bool data_reads;
bool data_writes;
bool data_backwards;
bool data_zero_memset;
bool data_rand_walk;
u32 nr_loops;
u32 nr_secs;
u32 sleep_usecs;
/* Working set initialization: */
bool init_zero;
bool init_random;
bool init_cpu0;
/* Misc options: */
int show_details;
int run_all;
int thp;
long bytes_global;
long bytes_process;
long bytes_process_locked;
long bytes_thread;
int nr_tasks;
bool show_convergence;
bool measure_convergence;
int perturb_secs;
int nr_cpus;
int nr_nodes;
/* Affinity options -C and -N: */
char *cpu_list_str;
char *node_list_str;
};
/* Global, read-writable area, accessible to all processes and threads: */
struct global_info {
u8 *data;
struct mutex startup_mutex;
struct cond startup_cond;
int nr_tasks_started;
struct mutex start_work_mutex;
struct cond start_work_cond;
int nr_tasks_working;
bool start_work;
struct mutex stop_work_mutex;
u64 bytes_done;
struct thread_data *threads;
/* Convergence latency measurement: */
bool all_converged;
bool stop_work;
int print_once;
struct params p;
};
static struct global_info *g = NULL;
static int parse_cpus_opt(const struct option *opt, const char *arg, int unset);
static int parse_nodes_opt(const struct option *opt, const char *arg, int unset);
struct params p0;
static const struct option options[] = {
OPT_INTEGER('p' , "nr_proc" , &p0.nr_proc, "number of processes" ),
OPT_INTEGER('t' , "nr_threads" , &p0.nr_threads, "number of threads per process" ),
OPT_STRING('G' , "mb_global" , &p0.mb_global_str, "MB" , "global memory (MBs)" ),
OPT_STRING('P' , "mb_proc" , &p0.mb_proc_str, "MB" , "process memory (MBs)" ),
OPT_STRING('L' , "mb_proc_locked" , &p0.mb_proc_locked_str,"MB" , "process serialized/locked memory access (MBs), <= process_memory" ),
OPT_STRING('T' , "mb_thread" , &p0.mb_thread_str, "MB" , "thread memory (MBs)" ),
OPT_UINTEGER('l' , "nr_loops" , &p0.nr_loops, "max number of loops to run (default: unlimited)" ),
OPT_UINTEGER('s' , "nr_secs" , &p0.nr_secs, "max number of seconds to run (default: 5 secs)" ),
OPT_UINTEGER('u' , "usleep" , &p0.sleep_usecs, "usecs to sleep per loop iteration" ),
OPT_BOOLEAN('R' , "data_reads" , &p0.data_reads, "access the data via reads (can be mixed with -W)" ),
OPT_BOOLEAN('W' , "data_writes" , &p0.data_writes, "access the data via writes (can be mixed with -R)" ),
OPT_BOOLEAN('B' , "data_backwards" , &p0.data_backwards, "access the data backwards as well" ),
OPT_BOOLEAN('Z' , "data_zero_memset" , &p0.data_zero_memset,"access the data via glibc bzero only" ),
OPT_BOOLEAN('r' , "data_rand_walk" , &p0.data_rand_walk, "access the data with random (32bit LFSR) walk" ),
OPT_BOOLEAN('z' , "init_zero" , &p0.init_zero, "bzero the initial allocations" ),
OPT_BOOLEAN('I' , "init_random" , &p0.init_random, "randomize the contents of the initial allocations" ),
OPT_BOOLEAN('0' , "init_cpu0" , &p0.init_cpu0, "do the initial allocations on CPU#0" ),
OPT_INTEGER('x' , "perturb_secs" , &p0.perturb_secs, "perturb thread 0/0 every X secs, to test convergence stability" ),
OPT_INCR ('d' , "show_details" , &p0.show_details, "Show details" ),
OPT_INCR ('a' , "all" , &p0.run_all, "Run all tests in the suite" ),
OPT_INTEGER('H' , "thp" , &p0.thp, "MADV_NOHUGEPAGE < 0 < MADV_HUGEPAGE" ),
OPT_BOOLEAN('c' , "show_convergence" , &p0.show_convergence, "show convergence details, "
"convergence is reached when each process (all its threads) is running on a single NUMA node." ),
OPT_BOOLEAN('m' , "measure_convergence" , &p0.measure_convergence, "measure convergence latency" ),
OPT_BOOLEAN('q' , "quiet" , &quiet,
"quiet mode (do not show any warnings or messages)" ),
OPT_BOOLEAN('S' , "serialize-startup" , &p0.serialize_startup,"serialize thread startup" ),
/* Special option string parsing callbacks: */
OPT_CALLBACK('C' , "cpus" , NULL, "cpu[,cpu2,...cpuN]" ,
"bind the first N tasks to these specific cpus (the rest is unbound)" ,
parse_cpus_opt),
OPT_CALLBACK('M' , "memnodes" , NULL, "node[,node2,...nodeN]" ,
"bind the first N tasks to these specific memory nodes (the rest is unbound)" ,
parse_nodes_opt),
OPT_END()
};
static const char * const bench_numa_usage[] = {
"perf bench numa <options>" ,
NULL
};
static const char * const numa_usage[] = {
"perf bench numa mem [<options>]" ,
NULL
};
/*
* To get number of numa nodes present .
*/
static int nr_numa_nodes(void )
{
int i, nr_nodes = 0 ;
for (i = 0 ; i < g->p.nr_nodes; i++) {
if (numa_bitmask_isbitset(numa_nodes_ptr, i))
nr_nodes++;
}
return nr_nodes;
}
/*
* To check if given numa node is present .
*/
static int is_node_present(int node)
{
return numa_bitmask_isbitset(numa_nodes_ptr, node);
}
/*
* To check given numa node has cpus .
*/
static bool node_has_cpus(int node)
{
struct bitmask *cpumask = numa_allocate_cpumask();
bool ret = false ; /* fall back to nocpus */
int cpu;
BUG_ON(!cpumask);
if (!numa_node_to_cpus(node, cpumask)) {
for (cpu = 0 ; cpu < (int )cpumask->size; cpu++) {
if (numa_bitmask_isbitset(cpumask, cpu)) {
ret = true ;
break ;
}
}
}
numa_free_cpumask(cpumask);
return ret;
}
static cpu_set_t *bind_to_cpu(int target_cpu)
{
int nrcpus = numa_num_possible_cpus();
cpu_set_t *orig_mask, *mask;
size_t size;
orig_mask = CPU_ALLOC(nrcpus);
BUG_ON(!orig_mask);
size = CPU_ALLOC_SIZE(nrcpus);
CPU_ZERO_S(size, orig_mask);
if (sched_getaffinity(0 , size, orig_mask))
goto err_out;
mask = CPU_ALLOC(nrcpus);
if (!mask)
goto err_out;
CPU_ZERO_S(size, mask);
if (target_cpu == -1 ) {
int cpu;
for (cpu = 0 ; cpu < g->p.nr_cpus; cpu++)
CPU_SET_S(cpu, size, mask);
} else {
if (target_cpu < 0 || target_cpu >= g->p.nr_cpus)
goto err;
CPU_SET_S(target_cpu, size, mask);
}
if (sched_setaffinity(0 , size, mask))
goto err;
return orig_mask;
err:
CPU_FREE(mask);
err_out:
CPU_FREE(orig_mask);
/* BUG_ON due to failure in allocation of orig_mask/mask */
BUG_ON(-1 );
return NULL;
}
static cpu_set_t *bind_to_node(int target_node)
{
int nrcpus = numa_num_possible_cpus();
size_t size;
cpu_set_t *orig_mask, *mask;
int cpu;
orig_mask = CPU_ALLOC(nrcpus);
BUG_ON(!orig_mask);
size = CPU_ALLOC_SIZE(nrcpus);
CPU_ZERO_S(size, orig_mask);
if (sched_getaffinity(0 , size, orig_mask))
goto err_out;
mask = CPU_ALLOC(nrcpus);
if (!mask)
goto err_out;
CPU_ZERO_S(size, mask);
if (target_node == NUMA_NO_NODE) {
for (cpu = 0 ; cpu < g->p.nr_cpus; cpu++)
CPU_SET_S(cpu, size, mask);
} else {
struct bitmask *cpumask = numa_allocate_cpumask();
if (!cpumask)
goto err;
if (!numa_node_to_cpus(target_node, cpumask)) {
for (cpu = 0 ; cpu < (int )cpumask->size; cpu++) {
if (numa_bitmask_isbitset(cpumask, cpu))
CPU_SET_S(cpu, size, mask);
}
}
numa_free_cpumask(cpumask);
}
if (sched_setaffinity(0 , size, mask))
goto err;
return orig_mask;
err:
CPU_FREE(mask);
err_out:
CPU_FREE(orig_mask);
/* BUG_ON due to failure in allocation of orig_mask/mask */
BUG_ON(-1 );
return NULL;
}
static void bind_to_cpumask(cpu_set_t *mask)
{
int ret;
size_t size = CPU_ALLOC_SIZE(numa_num_possible_cpus());
ret = sched_setaffinity(0 , size, mask);
if (ret) {
CPU_FREE(mask);
BUG_ON(ret);
}
}
static void mempol_restore(void )
{
int ret;
ret = set_mempolicy(MPOL_DEFAULT, NULL, g->p.nr_nodes-1 );
BUG_ON(ret);
}
static void bind_to_memnode(int node)
{
struct bitmask *node_mask;
int ret;
if (node == NUMA_NO_NODE)
return ;
node_mask = numa_allocate_nodemask();
BUG_ON(!node_mask);
numa_bitmask_clearall(node_mask);
numa_bitmask_setbit(node_mask, node);
ret = set_mempolicy(MPOL_BIND, node_mask->maskp, node_mask->size + 1 );
dprintf("binding to node %d, mask: %016lx => %d\n" , node, *node_mask->maskp, ret);
numa_bitmask_free(node_mask);
BUG_ON(ret);
}
#define HPSIZE (2 *1024 *1024 )
#define set_taskname(fmt...) \
do { \
char name[20 ]; \
\
snprintf(name, 20 , fmt); \
prctl(PR_SET_NAME, name); \
} while (0 )
static u8 *alloc_data(ssize_t bytes0, int map_flags,
int init_zero, int init_cpu0, int thp, int init_random)
{
cpu_set_t *orig_mask = NULL;
ssize_t bytes;
u8 *buf;
int ret;
if (!bytes0)
return NULL;
/* Allocate and initialize all memory on CPU#0: */
if (init_cpu0) {
int node = numa_node_of_cpu(0 );
orig_mask = bind_to_node(node);
bind_to_memnode(node);
}
bytes = bytes0 + HPSIZE;
buf = (void *)mmap(0 , bytes, PROT_READ|PROT_WRITE, MAP_ANON|map_flags, -1 , 0 );
BUG_ON(buf == (void *)-1 );
if (map_flags == MAP_PRIVATE) {
if (thp > 0 ) {
ret = madvise(buf, bytes, MADV_HUGEPAGE);
if (ret && !g->print_once) {
g->print_once = 1 ;
printf("WARNING: Could not enable THP - do: 'echo madvise > /sys/kernel/mm/transparent_hugepage/enabled'\n" );
}
}
if (thp < 0 ) {
ret = madvise(buf, bytes, MADV_NOHUGEPAGE);
if (ret && !g->print_once) {
g->print_once = 1 ;
printf("WARNING: Could not disable THP: run a CONFIG_TRANSPARENT_HUGEPAGE kernel?\n" );
}
}
}
if (init_zero) {
bzero(buf, bytes);
} else {
/* Initialize random contents, different in each word: */
if (init_random) {
u64 *wbuf = (void *)buf;
long off = rand();
long i;
for (i = 0 ; i < bytes/8 ; i++)
wbuf[i] = i + off;
}
}
/* Align to 2MB boundary: */
buf = (void *)(((unsigned long )buf + HPSIZE-1 ) & ~(HPSIZE-1 ));
/* Restore affinity: */
if (init_cpu0) {
bind_to_cpumask(orig_mask);
CPU_FREE(orig_mask);
mempol_restore();
}
return buf;
}
static void free_data(void *data, ssize_t bytes)
{
int ret;
if (!data)
return ;
ret = munmap(data, bytes);
BUG_ON(ret);
}
/*
* Create a shared memory buffer that can be shared between processes , zeroed :
*/
static void * zalloc_shared_data(ssize_t bytes)
{
return alloc_data(bytes, MAP_SHARED, 1 , g->p.init_cpu0, g->p.thp, g->p.init_random);
}
/*
* Create a shared memory buffer that can be shared between processes :
*/
static void * setup_shared_data(ssize_t bytes)
{
return alloc_data(bytes, MAP_SHARED, 0 , g->p.init_cpu0, g->p.thp, g->p.init_random);
}
/*
* Allocate process - local memory - this will either be shared between
* threads of this process , or only be accessed by this thread :
*/
static void * setup_private_data(ssize_t bytes)
{
return alloc_data(bytes, MAP_PRIVATE, 0 , g->p.init_cpu0, g->p.thp, g->p.init_random);
}
static int parse_cpu_list(const char *arg)
{
p0.cpu_list_str = strdup(arg);
dprintf("got CPU list: {%s}\n" , p0.cpu_list_str);
return 0 ;
}
/*
* Check whether a CPU is online
*
* Returns :
* 1 - > if CPU is online
* 0 - > if CPU is offline
* - 1 - > error case
*/
static int is_cpu_online(unsigned int cpu)
{
char *str;
size_t strlen;
char buf[256 ];
int status = -1 ;
struct stat statbuf;
snprintf(buf, sizeof (buf),
"/sys/devices/system/cpu/cpu%d" , cpu);
if (stat(buf, &statbuf) != 0 )
return 0 ;
/*
* Check if / sys / devices / system / cpu / cpux / online file
* exists . Some cases cpu0 won ' t have online file since
* it is not expected to be turned off generally .
* In kernels without CONFIG_HOTPLUG_CPU , this
* file won ' t exist
*/
snprintf(buf, sizeof (buf),
"/sys/devices/system/cpu/cpu%d/online" , cpu);
if (stat(buf, &statbuf) != 0 )
return 1 ;
/*
* Read online file using sysfs__read_str .
* If read or open fails , return - 1 .
* If read succeeds , return value from file
* which gets stored in " str "
*/
snprintf(buf, sizeof (buf),
"devices/system/cpu/cpu%d/online" , cpu);
if (sysfs__read_str(buf, &str, &strlen) < 0 )
return status;
status = atoi(str);
free(str);
return status;
}
static int parse_setup_cpu_list(void )
{
struct thread_data *td;
char *str0, *str;
int t;
if (!g->p.cpu_list_str)
return 0 ;
dprintf("g->p.nr_tasks: %d\n" , g->p.nr_tasks);
str0 = str = strdup(g->p.cpu_list_str);
t = 0 ;
BUG_ON(!str);
tprintf("# binding tasks to CPUs:\n" );
tprintf("# " );
while (true ) {
int bind_cpu, bind_cpu_0, bind_cpu_1;
char *tok, *tok_end, *tok_step, *tok_len, *tok_mul;
int bind_len;
int step;
int mul;
tok = strsep(&str, "," );
if (!tok)
break ;
tok_end = strstr(tok, "-" );
dprintf("\ntoken: {%s}, end: {%s}\n" , tok, tok_end);
if (!tok_end) {
/* Single CPU specified: */
bind_cpu_0 = bind_cpu_1 = atol(tok);
} else {
/* CPU range specified (for example: "5-11"): */
bind_cpu_0 = atol(tok);
bind_cpu_1 = atol(tok_end + 1 );
}
step = 1 ;
tok_step = strstr(tok, "#" );
if (tok_step) {
step = atol(tok_step + 1 );
BUG_ON(step <= 0 || step >= g->p.nr_cpus);
}
/*
* Mask length .
* Eg : " - - cpus 8 _ 4 - 16 # 4 " means : ' - - cpus 8 _ 4 , 12 _ 4 , 16 _ 4 ' ,
* where the _ 4 means the next 4 CPUs are allowed .
*/
bind_len = 1 ;
tok_len = strstr(tok, "_" );
if (tok_len) {
bind_len = atol(tok_len + 1 );
BUG_ON(bind_len <= 0 || bind_len > g->p.nr_cpus);
}
/* Multiplicator shortcut, "0x8" is a shortcut for: "0,0,0,0,0,0,0,0" */
mul = 1 ;
tok_mul = strstr(tok, "x" );
if (tok_mul) {
mul = atol(tok_mul + 1 );
BUG_ON(mul <= 0 );
}
dprintf("CPUs: %d_%d-%d#%dx%d\n" , bind_cpu_0, bind_len, bind_cpu_1, step, mul);
if (bind_cpu_0 >= g->p.nr_cpus || bind_cpu_1 >= g->p.nr_cpus) {
printf("\nTest not applicable, system has only %d CPUs.\n" , g->p.nr_cpus);
return -1 ;
}
if (is_cpu_online(bind_cpu_0) != 1 || is_cpu_online(bind_cpu_1) != 1 ) {
printf("\nTest not applicable, bind_cpu_0 or bind_cpu_1 is offline\n" );
return -1 ;
}
BUG_ON(bind_cpu_0 < 0 || bind_cpu_1 < 0 );
BUG_ON(bind_cpu_0 > bind_cpu_1);
for (bind_cpu = bind_cpu_0; bind_cpu <= bind_cpu_1; bind_cpu += step) {
size_t size = CPU_ALLOC_SIZE(g->p.nr_cpus);
int i;
for (i = 0 ; i < mul; i++) {
int cpu;
if (t >= g->p.nr_tasks) {
printf("\n# NOTE: ignoring bind CPUs starting at CPU#%d\n #" , bind_cpu);
goto out;
}
td = g->threads + t;
if (t)
tprintf("," );
if (bind_len > 1 ) {
tprintf("%2d/%d" , bind_cpu, bind_len);
} else {
tprintf("%2d" , bind_cpu);
}
td->bind_cpumask = CPU_ALLOC(g->p.nr_cpus);
BUG_ON(!td->bind_cpumask);
CPU_ZERO_S(size, td->bind_cpumask);
for (cpu = bind_cpu; cpu < bind_cpu+bind_len; cpu++) {
if (cpu < 0 || cpu >= g->p.nr_cpus) {
CPU_FREE(td->bind_cpumask);
BUG_ON(-1 );
}
CPU_SET_S(cpu, size, td->bind_cpumask);
}
t++;
}
}
}
out:
tprintf("\n" );
if (t < g->p.nr_tasks)
printf("# NOTE: %d tasks bound, %d tasks unbound\n" , t, g->p.nr_tasks - t);
free(str0);
return 0 ;
}
static int parse_cpus_opt(const struct option *opt __maybe_unused,
const char *arg, int unset __maybe_unused)
{
if (!arg)
return -1 ;
return parse_cpu_list(arg);
}
static int parse_node_list(const char *arg)
{
p0.node_list_str = strdup(arg);
dprintf("got NODE list: {%s}\n" , p0.node_list_str);
return 0 ;
}
static int parse_setup_node_list(void )
{
struct thread_data *td;
char *str0, *str;
int t;
if (!g->p.node_list_str)
return 0 ;
dprintf("g->p.nr_tasks: %d\n" , g->p.nr_tasks);
str0 = str = strdup(g->p.node_list_str);
t = 0 ;
BUG_ON(!str);
tprintf("# binding tasks to NODEs:\n" );
tprintf("# " );
while (true ) {
int bind_node, bind_node_0, bind_node_1;
char *tok, *tok_end, *tok_step, *tok_mul;
int step;
int mul;
tok = strsep(&str, "," );
if (!tok)
break ;
tok_end = strstr(tok, "-" );
dprintf("\ntoken: {%s}, end: {%s}\n" , tok, tok_end);
if (!tok_end) {
/* Single NODE specified: */
bind_node_0 = bind_node_1 = atol(tok);
} else {
/* NODE range specified (for example: "5-11"): */
bind_node_0 = atol(tok);
bind_node_1 = atol(tok_end + 1 );
}
step = 1 ;
tok_step = strstr(tok, "#" );
if (tok_step) {
step = atol(tok_step + 1 );
BUG_ON(step <= 0 || step >= g->p.nr_nodes);
}
/* Multiplicator shortcut, "0x8" is a shortcut for: "0,0,0,0,0,0,0,0" */
mul = 1 ;
tok_mul = strstr(tok, "x" );
if (tok_mul) {
mul = atol(tok_mul + 1 );
BUG_ON(mul <= 0 );
}
dprintf("NODEs: %d-%d #%d\n" , bind_node_0, bind_node_1, step);
if (bind_node_0 >= g->p.nr_nodes || bind_node_1 >= g->p.nr_nodes) {
printf("\nTest not applicable, system has only %d nodes.\n" , g->p.nr_nodes);
return -1 ;
}
BUG_ON(bind_node_0 < 0 || bind_node_1 < 0 );
BUG_ON(bind_node_0 > bind_node_1);
for (bind_node = bind_node_0; bind_node <= bind_node_1; bind_node += step) {
int i;
for (i = 0 ; i < mul; i++) {
if (t >= g->p.nr_tasks || !node_has_cpus(bind_node)) {
printf("\n# NOTE: ignoring bind NODEs starting at NODE#%d\n" , bind_node);
goto out;
}
td = g->threads + t;
if (!t)
tprintf(" %2d" , bind_node);
else
tprintf(",%2d" , bind_node);
td->bind_node = bind_node;
t++;
}
}
}
out:
tprintf("\n" );
if (t < g->p.nr_tasks)
printf("# NOTE: %d tasks mem-bound, %d tasks unbound\n" , t, g->p.nr_tasks - t);
free(str0);
return 0 ;
}
static int parse_nodes_opt(const struct option *opt __maybe_unused,
const char *arg, int unset __maybe_unused)
{
if (!arg)
return -1 ;
return parse_node_list(arg);
}
static inline uint32_t lfsr_32(uint32_t lfsr)
{
const uint32_t taps = BIT(1 ) | BIT(5 ) | BIT(6 ) | BIT(31 );
return (lfsr>>1 ) ^ ((0 x0u - (lfsr & 0 x1u)) & taps);
}
/*
* Make sure there ' s real data dependency to RAM ( when read
* accesses are enabled ) , so the compiler , the CPU and the
* kernel ( KSM , zero page , etc . ) cannot optimize away RAM
* accesses :
*/
static inline u64 access_data(u64 *data, u64 val)
{
if (g->p.data_reads)
val += *data;
if (g->p.data_writes)
*data = val + 1 ;
return val;
}
/*
* The worker process does two types of work , a forwards going
* loop and a backwards going loop .
*
* We do this so that on multiprocessor systems we do not create
* a ' train ' of processing , with highly synchronized processes ,
* skewing the whole benchmark .
*/
static u64 do_work(u8 *__data, long bytes, int nr, int nr_max, int loop, u64 val)
{
long words = bytes/sizeof (u64);
u64 *data = (void *)__data;
long chunk_0, chunk_1;
u64 *d0, *d, *d1;
long off;
long i;
BUG_ON(!data && words);
BUG_ON(data && !words);
if (!data)
return val;
/* Very simple memset() work variant: */
if (g->p.data_zero_memset && !g->p.data_rand_walk) {
bzero(data, bytes);
return val;
}
/* Spread out by PID/TID nr and by loop nr: */
chunk_0 = words/nr_max;
chunk_1 = words/g->p.nr_loops;
off = nr*chunk_0 + loop*chunk_1;
while (off >= words)
off -= words;
if (g->p.data_rand_walk) {
u32 lfsr = nr + loop + val;
long j;
for (i = 0 ; i < words/1024 ; i++) {
long start, end;
lfsr = lfsr_32(lfsr);
start = lfsr % words;
end = min(start + 1024 , words-1 );
if (g->p.data_zero_memset) {
bzero(data + start, (end-start) * sizeof (u64));
} else {
for (j = start; j < end; j++)
val = access_data(data + j, val);
}
}
} else if (!g->p.data_backwards || (nr + loop) & 1 ) {
/* Process data forwards: */
d0 = data + off;
d = data + off + 1 ;
d1 = data + words;
for (;;) {
if (unlikely(d >= d1))
d = data;
if (unlikely(d == d0))
break ;
val = access_data(d, val);
d++;
}
} else {
/* Process data backwards: */
d0 = data + off;
d = data + off - 1 ;
d1 = data + words;
for (;;) {
if (unlikely(d < data))
d = data + words-1 ;
if (unlikely(d == d0))
break ;
val = access_data(d, val);
d--;
}
}
return val;
}
static void update_curr_cpu(int task_nr, unsigned long bytes_worked)
{
unsigned int cpu;
cpu = sched_getcpu();
g->threads[task_nr].curr_cpu = cpu;
prctl(0 , bytes_worked);
}
/*
* Count the number of nodes a process ' s threads
* are spread out on .
*
* A count of 1 means that the process is compressed
* to a single node . A count of g - > p . nr_nodes means it ' s
* spread out on the whole system .
*/
static int count_process_nodes(int process_nr)
{
char *node_present;
int nodes;
int n, t;
node_present = (char *)malloc(g->p.nr_nodes * sizeof (char ));
BUG_ON(!node_present);
for (nodes = 0 ; nodes < g->p.nr_nodes; nodes++)
node_present[nodes] = 0 ;
for (t = 0 ; t < g->p.nr_threads; t++) {
struct thread_data *td;
int task_nr;
int node;
task_nr = process_nr*g->p.nr_threads + t;
td = g->threads + task_nr;
node = numa_node_of_cpu(td->curr_cpu);
if (node < 0 ) /* curr_cpu was likely still -1 */ {
free(node_present);
return 0 ;
}
node_present[node] = 1 ;
}
nodes = 0 ;
for (n = 0 ; n < g->p.nr_nodes; n++)
nodes += node_present[n];
free(node_present);
return nodes;
}
/*
* Count the number of distinct process - threads a node contains .
*
* A count of 1 means that the node contains only a single
* process . If all nodes on the system contain at most one
* process then we are well - converged .
*/
static int count_node_processes(int node)
{
int processes = 0 ;
int t, p;
for (p = 0 ; p < g->p.nr_proc; p++) {
for (t = 0 ; t < g->p.nr_threads; t++) {
struct thread_data *td;
int task_nr;
int n;
task_nr = p*g->p.nr_threads + t;
td = g->threads + task_nr;
n = numa_node_of_cpu(td->curr_cpu);
if (n == node) {
processes++;
break ;
}
}
}
return processes;
}
static void calc_convergence_compression(int *strong)
{
unsigned int nodes_min, nodes_max;
int p;
nodes_min = -1 ;
nodes_max = 0 ;
for (p = 0 ; p < g->p.nr_proc; p++) {
unsigned int nodes = count_process_nodes(p);
if (!nodes) {
*strong = 0 ;
return ;
}
nodes_min = min(nodes, nodes_min);
nodes_max = max(nodes, nodes_max);
}
/* Strong convergence: all threads compress on a single node: */
if (nodes_min == 1 && nodes_max == 1 ) {
*strong = 1 ;
} else {
*strong = 0 ;
tprintf(" {%d-%d}" , nodes_min, nodes_max);
}
}
static void calc_convergence(double runtime_ns_max, double *convergence)
{
unsigned int loops_done_min, loops_done_max;
int process_groups;
int *nodes;
int distance;
int nr_min;
int nr_max;
int strong;
int sum;
int nr;
int node;
int cpu;
int t;
if (!g->p.show_convergence && !g->p.measure_convergence)
return ;
nodes = (int *)malloc(g->p.nr_nodes * sizeof (int ));
BUG_ON(!nodes);
for (node = 0 ; node < g->p.nr_nodes; node++)
nodes[node] = 0 ;
loops_done_min = -1 ;
loops_done_max = 0 ;
for (t = 0 ; t < g->p.nr_tasks; t++) {
struct thread_data *td = g->threads + t;
unsigned int loops_done;
cpu = td->curr_cpu;
/* Not all threads have written it yet: */
if (cpu < 0 )
continue ;
node = numa_node_of_cpu(cpu);
nodes[node]++;
loops_done = td->loops_done;
loops_done_min = min(loops_done, loops_done_min);
loops_done_max = max(loops_done, loops_done_max);
}
nr_max = 0 ;
nr_min = g->p.nr_tasks;
sum = 0 ;
for (node = 0 ; node < g->p.nr_nodes; node++) {
if (!is_node_present(node))
continue ;
nr = nodes[node];
nr_min = min(nr, nr_min);
nr_max = max(nr, nr_max);
sum += nr;
}
BUG_ON(nr_min > nr_max);
BUG_ON(sum > g->p.nr_tasks);
if (0 && (sum < g->p.nr_tasks)) {
free(nodes);
return ;
}
/*
* Count the number of distinct process groups present
* on nodes - when we are converged this will decrease
* to g - > p . nr_proc :
*/
process_groups = 0 ;
for (node = 0 ; node < g->p.nr_nodes; node++) {
int processes;
if (!is_node_present(node))
continue ;
processes = count_node_processes(node);
nr = nodes[node];
tprintf(" %2d/%-2d" , nr, processes);
process_groups += processes;
}
distance = nr_max - nr_min;
tprintf(" [%2d/%-2d]" , distance, process_groups);
tprintf(" l:%3d-%-3d (%3d)" ,
loops_done_min, loops_done_max, loops_done_max-loops_done_min);
if (loops_done_min && loops_done_max) {
double skew = 1 .0 - (double )loops_done_min/loops_done_max;
tprintf(" [%4.1f%%]" , skew * 100 .0 );
}
calc_convergence_compression(&strong);
if (strong && process_groups == g->p.nr_proc) {
if (!*convergence) {
*convergence = runtime_ns_max;
tprintf(" (%6.1fs converged)\n" , *convergence / NSEC_PER_SEC);
if (g->p.measure_convergence) {
g->all_converged = true ;
g->stop_work = true ;
}
}
} else {
if (*convergence) {
tprintf(" (%6.1fs de-converged)" , runtime_ns_max / NSEC_PER_SEC);
*convergence = 0 ;
}
tprintf("\n" );
}
free(nodes);
}
static void show_summary(double runtime_ns_max, int l, double *convergence)
{
tprintf("\r # %5.1f%% [%.1f mins]" ,
(double )(l+1 )/g->p.nr_loops*100 .0 , runtime_ns_max / NSEC_PER_SEC / 60 .0 );
calc_convergence(runtime_ns_max, convergence);
if (g->p.show_details >= 0 )
fflush(stdout);
}
static void *worker_thread(void *__tdata)
{
struct thread_data *td = __tdata;
struct timeval start0, start, stop, diff;
int process_nr = td->process_nr;
int thread_nr = td->thread_nr;
unsigned long last_perturbance;
int task_nr = td->task_nr;
int details = g->p.show_details;
int first_task, last_task;
double convergence = 0 ;
u64 val = td->val;
double runtime_ns_max;
u8 *global_data;
u8 *process_data;
u8 *thread_data;
u64 bytes_done, secs;
long work_done;
u32 l;
struct rusage rusage;
bind_to_cpumask(td->bind_cpumask);
bind_to_memnode(td->bind_node);
set_taskname("thread %d/%d" , process_nr, thread_nr);
global_data = g->data;
process_data = td->process_data;
thread_data = setup_private_data(g->p.bytes_thread);
bytes_done = 0 ;
last_task = 0 ;
if (process_nr == g->p.nr_proc-1 && thread_nr == g->p.nr_threads-1 )
last_task = 1 ;
first_task = 0 ;
if (process_nr == 0 && thread_nr == 0 )
first_task = 1 ;
if (details >= 2 ) {
printf("# thread %2d / %2d global mem: %p, process mem: %p, thread mem: %p\n" ,
process_nr, thread_nr, global_data, process_data, thread_data);
}
if (g->p.serialize_startup) {
mutex_lock(&g->startup_mutex);
g->nr_tasks_started++;
/* The last thread wakes the main process. */
if (g->nr_tasks_started == g->p.nr_tasks)
cond_signal(&g->startup_cond);
mutex_unlock(&g->startup_mutex);
/* Here we will wait for the main process to start us all at once: */
mutex_lock(&g->start_work_mutex);
g->start_work = false ;
g->nr_tasks_working++;
while (!g->start_work)
cond_wait(&g->start_work_cond, &g->start_work_mutex);
mutex_unlock(&g->start_work_mutex);
}
gettimeofday(&start0, NULL);
start = stop = start0;
last_perturbance = start.tv_sec;
for (l = 0 ; l < g->p.nr_loops; l++) {
start = stop;
if (g->stop_work)
break ;
val += do_work(global_data, g->p.bytes_global, process_nr, g->p.nr_proc, l, val);
val += do_work(process_data, g->p.bytes_process, thread_nr, g->p.nr_threads, l, val);
val += do_work(thread_data, g->p.bytes_thread, 0 , 1 , l, val);
if (g->p.sleep_usecs) {
mutex_lock(td->process_lock);
usleep(g->p.sleep_usecs);
mutex_unlock(td->process_lock);
}
/*
* Amount of work to be done under a process - global lock :
*/
if (g->p.bytes_process_locked) {
mutex_lock(td->process_lock);
val += do_work(process_data, g->p.bytes_process_locked, thread_nr, g->p.nr_threads, l, val);
mutex_unlock(td->process_lock);
}
work_done = g->p.bytes_global + g->p.bytes_process +
g->p.bytes_process_locked + g->p.bytes_thread;
update_curr_cpu(task_nr, work_done);
bytes_done += work_done;
if (details < 0 && !g->p.perturb_secs && !g->p.measure_convergence && !g->p.nr_secs)
continue ;
td->loops_done = l;
gettimeofday(&stop, NULL);
/* Check whether our max runtime timed out: */
if (g->p.nr_secs) {
timersub(&stop, &start0, &diff);
if ((u32)diff.tv_sec >= g->p.nr_secs) {
g->stop_work = true ;
break ;
}
}
/* Update the summary at most once per second: */
if (start.tv_sec == stop.tv_sec)
continue ;
/*
* Perturb the first task ' s equilibrium every g - > p . perturb_secs seconds ,
* by migrating to CPU # 0 :
*/
if (first_task && g->p.perturb_secs && (int )(stop.tv_sec - last_perturbance) >= g->p.perturb_secs) {
cpu_set_t *orig_mask;
int target_cpu;
int this_cpu;
last_perturbance = stop.tv_sec;
/*
* Depending on where we are running , move into
* the other half of the system , to create some
* real disturbance :
*/
this_cpu = g->threads[task_nr].curr_cpu;
if (this_cpu < g->p.nr_cpus/2 )
target_cpu = g->p.nr_cpus-1 ;
else
target_cpu = 0 ;
orig_mask = bind_to_cpu(target_cpu);
/* Here we are running on the target CPU already */
if (details >= 1 )
printf(" (injecting perturbalance, moved to CPU#%d)\n" , target_cpu);
bind_to_cpumask(orig_mask);
CPU_FREE(orig_mask);
}
if (details >= 3 ) {
timersub(&stop, &start, &diff);
runtime_ns_max = diff.tv_sec * NSEC_PER_SEC;
runtime_ns_max += diff.tv_usec * NSEC_PER_USEC;
if (details >= 0 ) {
printf(" #%2d / %2d: %14.2lf nsecs/op [val: %016" PRIx64"]\n" ,
process_nr, thread_nr, runtime_ns_max / bytes_done, val);
}
fflush(stdout);
}
if (!last_task)
continue ;
timersub(&stop, &start0, &diff);
runtime_ns_max = diff.tv_sec * NSEC_PER_SEC;
runtime_ns_max += diff.tv_usec * NSEC_PER_USEC;
show_summary(runtime_ns_max, l, &convergence);
}
gettimeofday(&stop, NULL);
timersub(&stop, &start0, &diff);
td->runtime_ns = diff.tv_sec * NSEC_PER_SEC;
td->runtime_ns += diff.tv_usec * NSEC_PER_USEC;
secs = td->runtime_ns / NSEC_PER_SEC;
td->speed_gbs = secs ? bytes_done / secs / 1 e9 : 0 ;
getrusage(RUSAGE_THREAD, &rusage);
td->system_time_ns = rusage.ru_stime.tv_sec * NSEC_PER_SEC;
td->system_time_ns += rusage.ru_stime.tv_usec * NSEC_PER_USEC;
td->user_time_ns = rusage.ru_utime.tv_sec * NSEC_PER_SEC;
td->user_time_ns += rusage.ru_utime.tv_usec * NSEC_PER_USEC;
free_data(thread_data, g->p.bytes_thread);
mutex_lock(&g->stop_work_mutex);
g->bytes_done += bytes_done;
mutex_unlock(&g->stop_work_mutex);
return NULL;
}
/*
* A worker process starts a couple of threads :
*/
static void worker_process(int process_nr)
{
struct mutex process_lock;
struct thread_data *td;
pthread_t *pthreads;
u8 *process_data;
int task_nr;
int ret;
int t;
mutex_init(&process_lock);
set_taskname("process %d" , process_nr);
/*
* Pick up the memory policy and the CPU binding of our first thread ,
* so that we initialize memory accordingly :
*/
task_nr = process_nr*g->p.nr_threads;
td = g->threads + task_nr;
bind_to_memnode(td->bind_node);
bind_to_cpumask(td->bind_cpumask);
pthreads = zalloc(g->p.nr_threads * sizeof (pthread_t));
process_data = setup_private_data(g->p.bytes_process);
if (g->p.show_details >= 3 ) {
printf(" # process %2d global mem: %p, process mem: %p\n" ,
process_nr, g->data, process_data);
}
for (t = 0 ; t < g->p.nr_threads; t++) {
task_nr = process_nr*g->p.nr_threads + t;
td = g->threads + task_nr;
td->process_data = process_data;
td->process_nr = process_nr;
td->thread_nr = t;
td->task_nr = task_nr;
td->val = rand();
td->curr_cpu = -1 ;
td->process_lock = &process_lock;
ret = pthread_create(pthreads + t, NULL, worker_thread, td);
BUG_ON(ret);
}
for (t = 0 ; t < g->p.nr_threads; t++) {
ret = pthread_join(pthreads[t], NULL);
BUG_ON(ret);
}
free_data(process_data, g->p.bytes_process);
free(pthreads);
}
static void print_summary(void )
{
if (g->p.show_details < 0 )
return ;
printf("\n ###\n" );
printf(" # %d %s will execute (on %d nodes, %d CPUs):\n" ,
g->p.nr_tasks, g->p.nr_tasks == 1 ? "task" : "tasks" , nr_numa_nodes(), g->p.nr_cpus);
printf(" # %5dx %5ldMB global shared mem operations\n" ,
g->p.nr_loops, g->p.bytes_global/1024 /1024 );
printf(" # %5dx %5ldMB process shared mem operations\n" ,
g->p.nr_loops, g->p.bytes_process/1024 /1024 );
printf(" # %5dx %5ldMB thread local mem operations\n" ,
g->p.nr_loops, g->p.bytes_thread/1024 /1024 );
printf(" ###\n" );
printf("\n ###\n" ); fflush(stdout);
}
static void init_thread_data(void )
{
ssize_t size = sizeof (*g->threads)*g->p.nr_tasks;
int t;
g->threads = zalloc_shared_data(size);
for (t = 0 ; t < g->p.nr_tasks; t++) {
struct thread_data *td = g->threads + t;
size_t cpuset_size = CPU_ALLOC_SIZE(g->p.nr_cpus);
int cpu;
/* Allow all nodes by default: */
td->bind_node = NUMA_NO_NODE;
/* Allow all CPUs by default: */
td->bind_cpumask = CPU_ALLOC(g->p.nr_cpus);
BUG_ON(!td->bind_cpumask);
CPU_ZERO_S(cpuset_size, td->bind_cpumask);
for (cpu = 0 ; cpu < g->p.nr_cpus; cpu++)
CPU_SET_S(cpu, cpuset_size, td->bind_cpumask);
}
}
static void deinit_thread_data(void )
{
ssize_t size = sizeof (*g->threads)*g->p.nr_tasks;
int t;
/* Free the bind_cpumask allocated for thread_data */
for (t = 0 ; t < g->p.nr_tasks; t++) {
struct thread_data *td = g->threads + t;
CPU_FREE(td->bind_cpumask);
}
free_data(g->threads, size);
}
static int init(void )
{
g = (void *)alloc_data(sizeof (*g), MAP_SHARED, 1 , 0 , 0 /* THP */, 0);
/* Copy over options: */
g->p = p0;
g->p.nr_cpus = numa_num_configured_cpus();
g->p.nr_nodes = numa_max_node() + 1 ;
/* char array in count_process_nodes(): */
BUG_ON(g->p.nr_nodes < 0 );
if (quiet && !g->p.show_details)
g->p.show_details = -1 ;
/* Some memory should be specified: */
if (!g->p.mb_global_str && !g->p.mb_proc_str && !g->p.mb_thread_str)
return -1 ;
if (g->p.mb_global_str) {
g->p.mb_global = atof(g->p.mb_global_str);
BUG_ON(g->p.mb_global < 0 );
}
if (g->p.mb_proc_str) {
g->p.mb_proc = atof(g->p.mb_proc_str);
BUG_ON(g->p.mb_proc < 0 );
}
if (g->p.mb_proc_locked_str) {
g->p.mb_proc_locked = atof(g->p.mb_proc_locked_str);
BUG_ON(g->p.mb_proc_locked < 0 );
BUG_ON(g->p.mb_proc_locked > g->p.mb_proc);
}
if (g->p.mb_thread_str) {
g->p.mb_thread = atof(g->p.mb_thread_str);
BUG_ON(g->p.mb_thread < 0 );
}
BUG_ON(g->p.nr_threads <= 0 );
BUG_ON(g->p.nr_proc <= 0 );
g->p.nr_tasks = g->p.nr_proc*g->p.nr_threads;
g->p.bytes_global = g->p.mb_global *1024 L*1024 L;
g->p.bytes_process = g->p.mb_proc *1024 L*1024 L;
g->p.bytes_process_locked = g->p.mb_proc_locked *1024 L*1024 L;
g->p.bytes_thread = g->p.mb_thread *1024 L*1024 L;
g->data = setup_shared_data(g->p.bytes_global);
/* Startup serialization: */
mutex_init_pshared(&g->start_work_mutex);
cond_init_pshared(&g->start_work_cond);
mutex_init_pshared(&g->startup_mutex);
cond_init_pshared(&g->startup_cond);
mutex_init_pshared(&g->stop_work_mutex);
init_thread_data();
tprintf("#\n" );
if (parse_setup_cpu_list() || parse_setup_node_list())
return -1 ;
tprintf("#\n" );
print_summary();
return 0 ;
}
static void deinit(void )
{
free_data(g->data, g->p.bytes_global);
g->data = NULL;
deinit_thread_data();
free_data(g, sizeof (*g));
g = NULL;
}
/*
* Print a short or long result , depending on the verbosity setting :
*/
static void print_res(const char *name, double val,
const char *txt_unit, const char *txt_short, const char *txt_long)
{
if (!name)
name = "main," ;
if (!quiet)
printf(" %-30s %15.3f, %-15s %s\n" , name, val, txt_unit, txt_short);
else
printf(" %14.3f %s\n" , val, txt_long);
}
static int __bench_numa(const char *name)
{
struct timeval start, stop, diff;
u64 runtime_ns_min, runtime_ns_sum;
pid_t *pids, pid, wpid;
double delta_runtime;
double runtime_avg;
double runtime_sec_max;
double runtime_sec_min;
int wait_stat;
double bytes;
int i, t, p;
if (init())
return -1 ;
pids = zalloc(g->p.nr_proc * sizeof (*pids));
pid = -1 ;
if (g->p.serialize_startup) {
tprintf(" #\n" );
tprintf(" # Startup synchronization: ..." ); fflush(stdout);
}
gettimeofday(&start, NULL);
for (i = 0 ; i < g->p.nr_proc; i++) {
pid = fork();
dprintf(" # process %2d: PID %d\n" , i, pid);
BUG_ON(pid < 0 );
if (!pid) {
/* Child process: */
worker_process(i);
exit (0 );
}
pids[i] = pid;
}
if (g->p.serialize_startup) {
bool threads_ready = false ;
double startup_sec;
/*
* Wait for all the threads to start up . The last thread will
* signal this process .
*/
mutex_lock(&g->startup_mutex);
while (g->nr_tasks_started != g->p.nr_tasks)
cond_wait(&g->startup_cond, &g->startup_mutex);
mutex_unlock(&g->startup_mutex);
/* Wait for all threads to be at the start_work_cond. */
while (!threads_ready) {
mutex_lock(&g->start_work_mutex);
threads_ready = (g->nr_tasks_working == g->p.nr_tasks);
mutex_unlock(&g->start_work_mutex);
if (!threads_ready)
usleep(1 );
}
gettimeofday(&stop, NULL);
timersub(&stop, &start, &diff);
startup_sec = diff.tv_sec * NSEC_PER_SEC;
startup_sec += diff.tv_usec * NSEC_PER_USEC;
startup_sec /= NSEC_PER_SEC;
tprintf(" threads initialized in %.6f seconds.\n" , startup_sec);
tprintf(" #\n" );
start = stop;
/* Start all threads running. */
mutex_lock(&g->start_work_mutex);
g->start_work = true ;
mutex_unlock(&g->start_work_mutex);
cond_broadcast(&g->start_work_cond);
} else {
gettimeofday(&start, NULL);
}
/* Parent process: */
for (i = 0 ; i < g->p.nr_proc; i++) {
wpid = waitpid(pids[i], &wait_stat, 0 );
BUG_ON(wpid < 0 );
BUG_ON(!WIFEXITED(wait_stat));
}
runtime_ns_sum = 0 ;
runtime_ns_min = -1 LL;
for (t = 0 ; t < g->p.nr_tasks; t++) {
u64 thread_runtime_ns = g->threads[t].runtime_ns;
runtime_ns_sum += thread_runtime_ns;
runtime_ns_min = min(thread_runtime_ns, runtime_ns_min);
}
gettimeofday(&stop, NULL);
timersub(&stop, &start, &diff);
BUG_ON(bench_format != BENCH_FORMAT_DEFAULT);
tprintf("\n ###\n" );
tprintf("\n" );
runtime_sec_max = diff.tv_sec * NSEC_PER_SEC;
runtime_sec_max += diff.tv_usec * NSEC_PER_USEC;
runtime_sec_max /= NSEC_PER_SEC;
runtime_sec_min = runtime_ns_min / NSEC_PER_SEC;
bytes = g->bytes_done;
runtime_avg = (double )runtime_ns_sum / g->p.nr_tasks / NSEC_PER_SEC;
if (g->p.measure_convergence) {
print_res(name, runtime_sec_max,
"secs," , "NUMA-convergence-latency" , "secs latency to NUMA-converge" );
}
print_res(name, runtime_sec_max,
"secs," , "runtime-max/thread" , "secs slowest (max) thread-runtime" );
print_res(name, runtime_sec_min,
"secs," , "runtime-min/thread" , "secs fastest (min) thread-runtime" );
print_res(name, runtime_avg,
"secs," , "runtime-avg/thread" , "secs average thread-runtime" );
delta_runtime = (runtime_sec_max - runtime_sec_min)/2 .0 ;
print_res(name, delta_runtime / runtime_sec_max * 100 .0 ,
"%," , "spread-runtime/thread" , "% difference between max/avg runtime" );
print_res(name, bytes / g->p.nr_tasks / 1 e9,
"GB," , "data/thread" , "GB data processed, per thread" );
print_res(name, bytes / 1 e9,
"GB," , "data-total" , "GB data processed, total" );
print_res(name, runtime_sec_max * NSEC_PER_SEC / (bytes / g->p.nr_tasks),
"nsecs," , "runtime/byte/thread" ,"nsecs/byte/thread runtime" );
print_res(name, bytes / g->p.nr_tasks / 1 e9 / runtime_sec_max,
"GB/sec," , "thread-speed" , "GB/sec/thread speed" );
print_res(name, bytes / runtime_sec_max / 1 e9,
"GB/sec," , "total-speed" , "GB/sec total speed" );
if (g->p.show_details >= 2 ) {
char tname[14 + 2 * 11 + 1 ];
struct thread_data *td;
for (p = 0 ; p < g->p.nr_proc; p++) {
for (t = 0 ; t < g->p.nr_threads; t++) {
memset(tname, 0 , sizeof (tname));
td = g->threads + p*g->p.nr_threads + t;
snprintf(tname, sizeof (tname), "process%d:thread%d" , p, t);
print_res(tname, td->speed_gbs,
"GB/sec" , "thread-speed" , "GB/sec/thread speed" );
print_res(tname, td->system_time_ns / NSEC_PER_SEC,
"secs" , "thread-system-time" , "system CPU time/thread" );
print_res(tname, td->user_time_ns / NSEC_PER_SEC,
"secs" , "thread-user-time" , "user CPU time/thread" );
}
}
}
free(pids);
deinit();
return 0 ;
}
#define MAX_ARGS 50
static int command_size(const char **argv)
{
int size = 0 ;
while (*argv) {
size++;
argv++;
}
BUG_ON(size >= MAX_ARGS);
return size;
}
static void init_params(struct params *p, const char *name, int argc, const char **argv)
{
int i;
printf("\n # Running %s \" perf bench numa", name);
for (i = 0 ; i < argc; i++)
printf(" %s" , argv[i]);
printf("\" \n");
memset(p, 0 , sizeof (*p));
/* Initialize nonzero defaults: */
p->serialize_startup = 1 ;
p->data_reads = true ;
p->data_writes = true ;
p->data_backwards = true ;
p->data_rand_walk = true ;
p->nr_loops = -1 ;
p->init_random = true ;
p->mb_global_str = "1" ;
p->nr_proc = 1 ;
p->nr_threads = 1 ;
p->nr_secs = 5 ;
p->run_all = argc == 1 ;
}
static int run_bench_numa(const char *name, const char **argv)
{
int argc = command_size(argv);
init_params(&p0, name, argc, argv);
argc = parse_options(argc, argv, options, bench_numa_usage, 0 );
if (argc)
goto err;
if (__bench_numa(name))
goto err;
return 0 ;
err:
return -1 ;
}
#define OPT_BW_RAM "-s" , "20" , "-zZq" , "--thp" , " 1" , "--no-data_rand_walk"
#define OPT_BW_RAM_NOTHP OPT_BW_RAM, "--thp" , "-1"
#define OPT_CONV "-s" , "100" , "-zZ0qcm" , "--thp" , " 1"
#define OPT_CONV_NOTHP OPT_CONV, "--thp" , "-1"
#define OPT_BW "-s" , "20" , "-zZ0q" , "--thp" , " 1"
#define OPT_BW_NOTHP OPT_BW, "--thp" , "-1"
/*
* The built - in test - suite executed by " perf bench numa - a " .
*
* ( A minimum of 4 nodes and 16 GB of RAM is recommended . )
*/
static const char *tests[][MAX_ARGS] = {
/* Basic single-stream NUMA bandwidth measurements: */
{ "RAM-bw-local," , "mem" , "-p" , "1" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0" , "-M" , "0" , OPT_BW_RAM },
{ "RAM-bw-local-NOTHP," ,
"mem" , "-p" , "1" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0" , "-M" , "0" , OPT_BW_RAM_NOTHP },
{ "RAM-bw-remote," , "mem" , "-p" , "1" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0" , "-M" , "1" , OPT_BW_RAM },
/* 2-stream NUMA bandwidth measurements: */
{ "RAM-bw-local-2x," , "mem" , "-p" , "2" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0,2" , "-M" , "0x2" , OPT_BW_RAM },
{ "RAM-bw-remote-2x," , "mem" , "-p" , "2" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0,2" , "-M" , "1x2" , OPT_BW_RAM },
/* Cross-stream NUMA bandwidth measurement: */
{ "RAM-bw-cross," , "mem" , "-p" , "2" , "-t" , "1" , "-P" , "1024" ,
"-C" , "0,8" , "-M" , "1,0" , OPT_BW_RAM },
/* Convergence latency measurements: */
{ " 1x3-convergence," , "mem" , "-p" , "1" , "-t" , "3" , "-P" , "512" , OPT_CONV },
{ " 1x4-convergence," , "mem" , "-p" , "1" , "-t" , "4" , "-P" , "512" , OPT_CONV },
{ " 1x6-convergence," , "mem" , "-p" , "1" , "-t" , "6" , "-P" , "1020" , OPT_CONV },
{ " 2x3-convergence," , "mem" , "-p" , "2" , "-t" , "3" , "-P" , "1020" , OPT_CONV },
{ " 3x3-convergence," , "mem" , "-p" , "3" , "-t" , "3" , "-P" , "1020" , OPT_CONV },
{ " 4x4-convergence," , "mem" , "-p" , "4" , "-t" , "4" , "-P" , "512" , OPT_CONV },
{ " 4x4-convergence-NOTHP," ,
"mem" , "-p" , "4" , "-t" , "4" , "-P" , "512" , OPT_CONV_NOTHP },
{ " 4x6-convergence," , "mem" , "-p" , "4" , "-t" , "6" , "-P" , "1020" , OPT_CONV },
{ " 4x8-convergence," , "mem" , "-p" , "4" , "-t" , "8" , "-P" , "512" , OPT_CONV },
{ " 8x4-convergence," , "mem" , "-p" , "8" , "-t" , "4" , "-P" , "512" , OPT_CONV },
{ " 8x4-convergence-NOTHP," ,
"mem" , "-p" , "8" , "-t" , "4" , "-P" , "512" , OPT_CONV_NOTHP },
{ " 3x1-convergence," , "mem" , "-p" , "3" , "-t" , "1" , "-P" , "512" , OPT_CONV },
{ " 4x1-convergence," , "mem" , "-p" , "4" , "-t" , "1" , "-P" , "512" , OPT_CONV },
{ " 8x1-convergence," , "mem" , "-p" , "8" , "-t" , "1" , "-P" , "512" , OPT_CONV },
{ "16x1-convergence," , "mem" , "-p" , "16" , "-t" , "1" , "-P" , "256" , OPT_CONV },
{ "32x1-convergence," , "mem" , "-p" , "32" , "-t" , "1" , "-P" , "128" , OPT_CONV },
/* Various NUMA process/thread layout bandwidth measurements: */
{ " 2x1-bw-process," , "mem" , "-p" , "2" , "-t" , "1" , "-P" , "1024" , OPT_BW },
{ " 3x1-bw-process," , "mem" , "-p" , "3" , "-t" , "1" , "-P" , "1024" , OPT_BW },
{ " 4x1-bw-process," , "mem" , "-p" , "4" , "-t" , "1" , "-P" , "1024" , OPT_BW },
{ " 8x1-bw-process," , "mem" , "-p" , "8" , "-t" , "1" , "-P" , " 512" , OPT_BW },
{ " 8x1-bw-process-NOTHP," ,
"mem" , "-p" , "8" , "-t" , "1" , "-P" , " 512" , OPT_BW_NOTHP },
{ "16x1-bw-process," , "mem" , "-p" , "16" , "-t" , "1" , "-P" , "256" , OPT_BW },
{ " 1x4-bw-thread," , "mem" , "-p" , "1" , "-t" , "4" , "-T" , "256" , OPT_BW },
{ " 1x8-bw-thread," , "mem" , "-p" , "1" , "-t" , "8" , "-T" , "256" , OPT_BW },
{ "1x16-bw-thread," , "mem" , "-p" , "1" , "-t" , "16" , "-T" , "128" , OPT_BW },
{ "1x32-bw-thread," , "mem" , "-p" , "1" , "-t" , "32" , "-T" , "64" , OPT_BW },
{ " 2x3-bw-process," , "mem" , "-p" , "2" , "-t" , "3" , "-P" , "512" , OPT_BW },
{ " 4x4-bw-process," , "mem" , "-p" , "4" , "-t" , "4" , "-P" , "512" , OPT_BW },
{ " 4x6-bw-process," , "mem" , "-p" , "4" , "-t" , "6" , "-P" , "512" , OPT_BW },
{ " 4x8-bw-process," , "mem" , "-p" , "4" , "-t" , "8" , "-P" , "512" , OPT_BW },
{ " 4x8-bw-process-NOTHP," ,
"mem" , "-p" , "4" , "-t" , "8" , "-P" , "512" , OPT_BW_NOTHP },
{ " 3x3-bw-process," , "mem" , "-p" , "3" , "-t" , "3" , "-P" , "512" , OPT_BW },
{ " 5x5-bw-process," , "mem" , "-p" , "5" , "-t" , "5" , "-P" , "512" , OPT_BW },
{ "2x16-bw-process," , "mem" , "-p" , "2" , "-t" , "16" , "-P" , "512" , OPT_BW },
{ "1x32-bw-process," , "mem" , "-p" , "1" , "-t" , "32" , "-P" , "2048" , OPT_BW },
{ "numa02-bw," , "mem" , "-p" , "1" , "-t" , "32" , "-T" , "32" , OPT_BW },
{ "numa02-bw-NOTHP," , "mem" , "-p" , "1" , "-t" , "32" , "-T" , "32" , OPT_BW_NOTHP },
{ "numa01-bw-thread," , "mem" , "-p" , "2" , "-t" , "16" , "-T" , "192" , OPT_BW },
{ "numa01-bw-thread-NOTHP," ,
"mem" , "-p" , "2" , "-t" , "16" , "-T" , "192" , OPT_BW_NOTHP },
};
static int bench_all(void )
{
int nr = ARRAY_SIZE(tests);
int ret;
int i;
ret = system("echo ' #'; echo ' # Running test on: '$(uname -a); echo ' #'" );
BUG_ON(ret < 0 );
for (i = 0 ; i < nr; i++) {
run_bench_numa(tests[i][0 ], tests[i] + 1 );
}
printf("\n" );
return 0 ;
}
int bench_numa(int argc, const char **argv)
{
init_params(&p0, "main," , argc, argv);
argc = parse_options(argc, argv, options, bench_numa_usage, 0 );
if (argc)
goto err;
if (p0.run_all)
return bench_all();
if (__bench_numa(NULL))
goto err;
return 0 ;
err:
usage_with_options(numa_usage, options);
return -1 ;
}
Messung V0.5 in Prozent C=92 H=95 G=93
¤ Dauer der Verarbeitung: 0.22 Sekunden
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