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From: Thomas Monjalon <thomas@monjalon.net>
To: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	"Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>,
	"Joyce Kong (Arm Technology China)" <Joyce.Kong@arm.com>
Cc: dev@dpdk.org, Stephen Hemminger <stephen@networkplumber.org>,
	nd <nd@arm.com>,
	"jerin.jacob@caviumnetworks.com" <jerin.jacob@caviumnetworks.com>,
	"hemant.agrawal@nxp.com" <hemant.agrawal@nxp.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"chaozhu@linux.vnet.ibm.com" <chaozhu@linux.vnet.ibm.com>
Subject: Re: [dpdk-dev] [PATCH v1 0/2] reimplement rwlock and add relevant perf test case
Date: Wed, 19 Dec 2018 21:37:50 +0100	[thread overview]
Message-ID: <2217922.oS7uaNfDOZ@xps> (raw)
In-Reply-To: <AM6PR08MB3672AD9C7530196E5B1DBBA398BC0@AM6PR08MB3672.eurprd08.prod.outlook.com>

17/12/2018 06:16, Honnappa Nagarahalli:
> Adding other platform maintainers as it affects all platforms.

There is no other comment. I am not sure what to do with this patch.


> From: Gavin Hu (Arm Technology China) <Gavin.Hu@arm.com>
> > 
> > Hi Stephen,
> > 
> > Thanks for your comment and sharing the link!
> > We are looking into it and it may take more time for performance profiling.
> > 
> > Best Regards,
> > Gavin
> > 
> > From: Stephen Hemminger <stephen@networkplumber.org>
> > > 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.

      reply	other threads:[~2018-12-19 20:37 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 ` [dpdk-dev] [PATCH v1 0/2] reimplement rwlock and add relevant perf test case Stephen Hemminger
2018-12-14  1:30   ` Gavin Hu (Arm Technology China)
2018-12-17  5:16     ` Honnappa Nagarahalli
2018-12-19 20:37       ` Thomas Monjalon [this message]

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