d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

test/rwlock: benchmark on all available cores

Browse Source 
Add performance test on all available cores to benchmark
the scaling up performance of rw_lock.

Fixes: af75078fece3 ("first public release")
Cc: stable@dpdk.org

Suggested-by: Gavin Hu <gavin.hu@arm.com>
Signed-off-by: Joyce Kong <joyce.kong@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
This commit is contained in:
Joyce Kong 2019-03-25 17:14:58 +08:00 committed by Thomas Monjalon
parent e8af2f1f11
commit fe252fb695
1 changed files with 75 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
app/test/test_rwlock.c
View File

@ -36,6 +36,7 @@
static rte_rwlock_t sl;
static rte_rwlock_t sl_tab[RTE_MAX_LCORE];
static rte_atomic32_t synchro;
enum {
LC_TYPE_RDLOCK,
@ -83,6 +84,77 @@ test_rwlock_per_core(__attribute__((unused)) void *arg)
return 0;
}
static rte_rwlock_t lk = RTE_RWLOCK_INITIALIZER;
static volatile uint64_t rwlock_data;
static uint64_t lock_count[RTE_MAX_LCORE] = {0};
#define TIME_MS 100
#define TEST_RWLOCK_DEBUG 0
static int
load_loop_fn(__attribute__((unused)) void *arg)
{
uint64_t time_diff = 0, begin;
uint64_t hz = rte_get_timer_hz();
uint64_t lcount = 0;
const unsigned int lcore = rte_lcore_id();
/* wait synchro for slaves */
if (lcore != rte_get_master_lcore())
while (rte_atomic32_read(&synchro) == 0)
;
begin = rte_rdtsc_precise();
while (time_diff < hz * TIME_MS / 1000) {
rte_rwlock_write_lock(&lk);
++rwlock_data;
rte_rwlock_write_unlock(&lk);
rte_rwlock_read_lock(&lk);
if (TEST_RWLOCK_DEBUG && !(lcount % 100))
printf("Core [%u] rwlock_data = %"PRIu64"\n",
lcore, rwlock_data);
rte_rwlock_read_unlock(&lk);
lcount++;
/* delay to make lock duty cycle slightly realistic */
rte_pause();
time_diff = rte_rdtsc_precise() - begin;
}
lock_count[lcore] = lcount;
return 0;
}
static int
test_rwlock_perf(void)
{
unsigned int i;
uint64_t total = 0;
printf("\nRwlock Perf Test on %u cores...\n", rte_lcore_count());
/* clear synchro and start slaves */
rte_atomic32_set(&synchro, 0);
if (rte_eal_mp_remote_launch(load_loop_fn, NULL, SKIP_MASTER) < 0)
return -1;
/* start synchro and launch test on master */
rte_atomic32_set(&synchro, 1);
load_loop_fn(NULL);
rte_eal_mp_wait_lcore();
RTE_LCORE_FOREACH(i) {
printf("Core [%u] count = %"PRIu64"\n", i, lock_count[i]);
total += lock_count[i];
}
printf("Total count = %"PRIu64"\n", total);
return 0;
}
/*
* - There is a global rwlock and a table of rwlocks (one per lcore).
*
@ -132,6 +204,9 @@ rwlock_test1(void)
rte_eal_mp_wait_lcore();
if (test_rwlock_perf() < 0)
return -1;
return 0;
}