From: Stephen Hemminger <stephen@networkplumber.org>
To: Joyce Kong <joyce.kong@arm.com>
Cc: dev@dpdk.org, nd@arm.com, thomas@monjalon.net,
jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com,
honnappa.nagarahalli@arm.com, gavin.hu@arm.com
Subject: Re: [dpdk-dev] [PATCH v1 0/2] reimplement rwlock and add relevant perf test case
Date: Wed, 12 Dec 2018 21:27:10 -0800 [thread overview]
Message-ID: <20181212212710.3c9ad4d3@xeon-e3> (raw)
In-Reply-To: <1544672265-219262-1-git-send-email-joyce.kong@arm.com>
On Thu, 13 Dec 2018 11:37:43 +0800
Joyce Kong <joyce.kong@arm.com> wrote:
> v1: reimplement rwlock with __atomic builtins, and add a rwlock perf test
> on all available cores to benchmark the improvement.
>
> We tested the patches on three arm64 platforms, ThundeX2 gained 20% performance,
> Qualcomm gained 36% and the 4-Cortex-A72 Marvell MACCHIATObin gained 19.6%.
> Below is the detailed test result on ThunderX2:
>
> *** rwlock_autotest without __atomic builtins ***
> Rwlock Perf Test on 128 cores...
> Core [0] count = 281
> Core [1] count = 252
> Core [2] count = 290
> Core [3] count = 259
> Core [4] count = 287
> ...
> Core [209] count = 3
> Core [210] count = 31
> Core [211] count = 120
> Total count = 18537
>
> *** rwlock_autotest with __atomic builtins ***
> Rwlock Perf Test on 128 cores...
> Core [0] count = 346
> Core [1] count = 355
> Core [2] count = 259
> Core [3] count = 285
> Core [4] count = 320
> ...
> Core [209] count = 2
> Core [210] count = 23
> Core [211] count = 63
> Total count = 22194
>
> Gavin Hu (1):
> rwlock: reimplement with __atomic builtins
>
> Joyce Kong (1):
> test/rwlock: add perf test case
>
> lib/librte_eal/common/include/generic/rte_rwlock.h | 16 ++---
> test/test/test_rwlock.c | 71 ++++++++++++++++++++++
> 2 files changed, 79 insertions(+), 8 deletions(-)
>
Did you consider using a better algorithm not just better primitives.
See https://locklessinc.com/articles/locks/ for a more complete discussion
of alternatives like ticket locks.
next prev parent reply other threads:[~2018-12-13 5:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-13 3:37 Joyce Kong
2018-12-13 3:37 ` [dpdk-dev] [PATCH v1 1/2] test/rwlock: add " Joyce Kong
2018-12-19 23:34 ` Ananyev, Konstantin
2018-12-20 1:01 ` Gavin Hu (Arm Technology China)
2018-12-20 1:45 ` Honnappa Nagarahalli
2019-03-14 13:15 ` [dpdk-dev] [PATCH v3 0/3] rwlock: reimplement rwlock with atomic and add relevant " Joyce Kong
2019-03-14 13:15 ` Joyce Kong
2019-03-14 13:15 ` [dpdk-dev] [PATCH v3 1/3] rwlock: reimplement with atomic builtins Joyce Kong
2019-03-14 13:15 ` Joyce Kong
2019-03-14 15:54 ` Stephen Hemminger
2019-03-14 15:54 ` Stephen Hemminger
2019-03-15 3:04 ` Gavin Hu (Arm Technology China)
2019-03-15 3:04 ` Gavin Hu (Arm Technology China)
2019-03-15 11:41 ` Ananyev, Konstantin
2019-03-15 11:41 ` Ananyev, Konstantin
2019-03-19 8:31 ` Gavin Hu (Arm Technology China)
2019-03-19 8:31 ` Gavin Hu (Arm Technology China)
2019-03-14 13:15 ` [dpdk-dev] [PATCH v3 2/3] test/rwlock: add perf test case on all available cores Joyce Kong
2019-03-14 13:15 ` Joyce Kong
2019-03-14 13:15 ` [dpdk-dev] [PATCH v3 3/3] test/rwlock: amortize the cost of getting time Joyce Kong
2019-03-14 13:15 ` Joyce Kong
2019-03-14 15:02 ` Honnappa Nagarahalli
2019-03-14 15:02 ` Honnappa Nagarahalli
2019-03-20 6:25 ` [dpdk-dev] [PATCH v4 0/3] rwlock: reimplement rwlock with atomic and add relevant perf test case Joyce Kong
2019-03-20 6:25 ` Joyce Kong
2019-03-20 6:25 ` [dpdk-dev] [PATCH v4 1/3] rwlock: reimplement with atomic builtins Joyce Kong
2019-03-20 6:25 ` Joyce Kong
2019-03-21 18:43 ` Ananyev, Konstantin
2019-03-21 18:43 ` Ananyev, Konstantin
2019-03-25 9:18 ` Joyce Kong (Arm Technology China)
2019-03-25 9:18 ` Joyce Kong (Arm Technology China)
2019-03-20 6:25 ` [dpdk-dev] [PATCH v4 2/3] test/rwlock: add perf test case on all available cores Joyce Kong
2019-03-20 6:25 ` Joyce Kong
2019-03-21 18:44 ` Ananyev, Konstantin
2019-03-21 18:44 ` Ananyev, Konstantin
2019-03-20 6:25 ` [dpdk-dev] [PATCH v4 3/3] test/rwlock: amortize the cost of getting time Joyce Kong
2019-03-20 6:25 ` Joyce Kong
2019-03-21 18:44 ` Ananyev, Konstantin
2019-03-21 18:44 ` Ananyev, Konstantin
2019-03-25 9:14 ` [dpdk-dev] [PATCH v5 0/3] rwlock: reimplement rwlock with atomic and add relevant perf test case Joyce Kong
2019-03-25 9:14 ` Joyce Kong
2019-03-28 10:50 ` Thomas Monjalon
2019-03-28 10:50 ` Thomas Monjalon
2019-04-16 14:57 ` Kevin Traynor
2019-04-16 14:57 ` Kevin Traynor
2019-03-25 9:14 ` [dpdk-dev] [PATCH v5 1/3] rwlock: reimplement with atomic builtins Joyce Kong
2019-03-25 9:14 ` Joyce Kong
2019-03-25 9:14 ` [dpdk-dev] [PATCH v5 2/3] test/rwlock: add perf test case on all available cores Joyce Kong
2019-03-25 9:14 ` Joyce Kong
2019-03-25 9:14 ` [dpdk-dev] [PATCH v5 3/3] test/rwlock: amortize the cost of getting time Joyce Kong
2019-03-25 9:14 ` Joyce Kong
2018-12-13 3:37 ` [dpdk-dev] [PATCH v1 2/2] rwlock: reimplement with __atomic builtins Joyce Kong
2018-12-19 23:50 ` Ananyev, Konstantin
2018-12-13 5:27 ` Stephen Hemminger [this message]
2018-12-14 1:30 ` [dpdk-dev] [PATCH v1 0/2] reimplement rwlock and add relevant perf test case Gavin Hu (Arm Technology China)
2018-12-17 5:16 ` Honnappa Nagarahalli
2018-12-19 20:37 ` Thomas Monjalon
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