From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 32250A2EEB for ; Tue, 10 Sep 2019 05:37:13 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 06D011B96B; Tue, 10 Sep 2019 05:37:13 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by dpdk.org (Postfix) with ESMTP id 00ECC1B96B for ; Tue, 10 Sep 2019 05:37:11 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4CEA428; Mon, 9 Sep 2019 20:37:11 -0700 (PDT) Received: from net-arm-thunderx2-01.test.ast.arm.com (net-arm-thunderx2-01.shanghai.arm.com [10.169.40.40]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 5569E3F67D; Mon, 9 Sep 2019 20:37:10 -0700 (PDT) From: Joyce Kong To: stable@dpdk.org, ktraynor@redhat.com Cc: joyce@arm.com Date: Tue, 10 Sep 2019 11:36:58 +0800 Message-Id: <1568086619-5029-1-git-send-email-joyce.kong@arm.com> X-Mailer: git-send-email 2.7.4 Subject: [dpdk-stable] [PATCH 18.11 1/2] test/rwlock: benchmark on all available cores X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" [ upstream commit fe252fb695efa9deb95f2e6b7baf6f805996a5b0 ] Add performance test on all available cores to benchmark the scaling up performance of rw_lock. Fixes: af75078fece3 ("first public release") Suggested-by: Gavin Hu Signed-off-by: Joyce Kong Acked-by: Konstantin Ananyev --- test/test/test_rwlock.c | 76 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/test/test/test_rwlock.c b/test/test/test_rwlock.c index 29171c4..d654d48 100644 --- a/test/test/test_rwlock.c +++ b/test/test/test_rwlock.c @@ -4,6 +4,7 @@ #include #include +#include #include #include @@ -44,6 +45,7 @@ static rte_rwlock_t sl; static rte_rwlock_t sl_tab[RTE_MAX_LCORE]; +static rte_atomic32_t synchro; static int test_rwlock_per_core(__attribute__((unused)) void *arg) @@ -65,6 +67,77 @@ 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; +} + static int test_rwlock(void) { @@ -95,6 +168,9 @@ test_rwlock(void) rte_eal_mp_wait_lcore(); + if (test_rwlock_perf() < 0) + return -1; + return 0; } -- 2.7.4