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From: Gavin Hu <gavin.hu@arm.com>
To: dev@dpdk.org
Cc: thomas@monjalon.net, jerinj@marvell.com, hemant.agrawal@nxp.com,
	bruce.richardson@intel.com, chaozhu@linux.vnet.ibm.com,
	Honnappa.Nagarahalli@arm.com, stephen@networkplumber.org,
	david.marchand@redhat.com, nd@arm.com,
	Gavin Hu <gavin.hu@arm.com>
Subject: [dpdk-dev] [PATCH v3 3/6] test/spinlock: get timestamp more precisely
Date: Thu, 27 Dec 2018 12:13:46 +0800	[thread overview]
Message-ID: <20181227041349.3058-4-gavin.hu@arm.com> (raw)
In-Reply-To: <20181227041349.3058-1-gavin.hu@arm.com>

To precisely benchmark the spinlock performance, uses the precise
version of getting timestamps, which enforces the timestamps are
obtained at the expected places.

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Phil Yang <phil.yang@arm.com>
---
 test/test/test_spinlock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/test/test_spinlock.c b/test/test/test_spinlock.c
index 6795195ae..648474833 100644
--- a/test/test/test_spinlock.c
+++ b/test/test/test_spinlock.c
@@ -113,14 +113,14 @@ load_loop_fn(void *func_param)
 	if (lcore != rte_get_master_lcore())
 		while (rte_atomic32_read(&synchro) == 0);
 
-	begin = rte_get_timer_cycles();
+	begin = rte_rdtsc_precise();
 	while (time_diff < hz * TIME_MS / 1000) {
 		if (use_lock)
 			rte_spinlock_lock(&lk);
 		lcount++;
 		if (use_lock)
 			rte_spinlock_unlock(&lk);
-		time_diff = rte_get_timer_cycles() - begin;
+		time_diff = rte_rdtsc_precise() - begin;
 	}
 	lock_count[lcore] = lcount;
 	return 0;
-- 
2.11.0

  parent reply	other threads:[~2018-12-27  4:14 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-27  4:13 [dpdk-dev] [PATCH v3 0/6] spinlock optimization and test case enhancements Gavin Hu
2018-12-27  4:13 ` [dpdk-dev] [PATCH v3 1/6] eal: fix clang compilation error on x86 Gavin Hu
2018-12-27  6:36   ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2018-12-27  4:13 ` [dpdk-dev] [PATCH v3 2/6] test/spinlock: remove 1us delay for correct benchmarking Gavin Hu
2018-12-27  7:20   ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2018-12-27  4:13 ` Gavin Hu [this message]
2018-12-27  7:27   ` [dpdk-dev] [EXT] [PATCH v3 3/6] test/spinlock: get timestamp more precisely Jerin Jacob Kollanukkaran
2019-01-03 18:22     ` Honnappa Nagarahalli
2018-12-27  4:13 ` [dpdk-dev] [PATCH v3 4/6] test/spinlock: amortize the cost of getting time Gavin Hu
2018-12-27  4:13 ` [dpdk-dev] [PATCH v3 5/6] spinlock: reimplement with atomic one-way barrier builtins Gavin Hu
2018-12-27  7:42   ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2018-12-27  9:02     ` Gavin Hu (Arm Technology China)
2019-01-03 20:35       ` Honnappa Nagarahalli
2019-01-11 13:52     ` Gavin Hu (Arm Technology China)
2019-01-14  5:54       ` Honnappa Nagarahalli
2019-01-14  7:39         ` Jerin Jacob Kollanukkaran
2019-01-14 17:08           ` Gavin Hu (Arm Technology China)
2019-01-14  7:57         ` Gavin Hu (Arm Technology China)
2018-12-27  4:13 ` [dpdk-dev] [PATCH v3 6/6] spinlock: ticket based to improve fairness Gavin Hu
2018-12-27  6:58   ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2018-12-27 10:05     ` Gavin Hu (Arm Technology China)
2018-12-27 12:08       ` Jerin Jacob Kollanukkaran
2018-12-27 23:41         ` Stephen Hemminger
2018-12-28  4:39           ` Jerin Jacob Kollanukkaran
2018-12-28 10:04             ` Gavin Hu (Arm Technology China)
2019-01-03 18:35             ` Honnappa Nagarahalli
2019-01-03 19:53               ` Stephen Hemminger
2019-01-04  7:06                 ` Honnappa Nagarahalli

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