From: Stephen Hemminger <stephen@networkplumber.org>
To: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
Stephen Hemminger <sthemmin@microsoft.com>, nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH v3] pflock: implementation of phase-fair reader writer locks
Date: Mon, 29 Mar 2021 10:22:39 -0700 [thread overview]
Message-ID: <20210329102239.1932a7a6@hermes.local> (raw)
In-Reply-To: <DBAPR08MB5814A7F2FA805E6F4F67F5F0987E9@DBAPR08MB5814.eurprd08.prod.outlook.com>
On Mon, 29 Mar 2021 03:14:29 +0000
Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com> wrote:
> <snip>
>
> > Subject: [PATCH v3] pflock: implementation of phase-fair reader writer locks
> >
> > This is a new type of reader-writer lock that provides better fairness
> > guarantees which makes it better for typical DPDK applications.
> > They lock internally uses two ticket pools, one for readers and one for
> ^^^^ The
>
> > writers.
> >
> > Phase fair reader writer locks ensure that neither reader or writer will be
> > starved. Neither reader or writer are preferred, they execute in alternating
> > phases. All operations of the same time (reader or writer) that try to acquire
> ^^^^ type
>
> > the lock are handled in FIFO order. Write operations are exclusive, and
> > multiple read operations can be run together (until a write arrives).
> >
> > A similar implementation is in Concurrency Kit package in FreeBSD.
> > For more information see:
> > "Reader-Writer Synchronization for Shared-Memory Multiprocessor
> > Real-Time Systems",
> > http://www.cs.unc.edu/~anderson/papers/ecrts09b.pdf
> >
> > Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Any more comments? Other than the typos in the commit log...
next prev parent reply other threads:[~2021-03-29 17:22 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 6:05 [dpdk-dev] [RFC] eal: add fair reader writer lock Stephen Hemminger
2021-01-14 17:34 ` [dpdk-dev] [PATCH v1] eal: add ticket based " Stephen Hemminger
2021-01-27 10:25 ` Ruifeng Wang
2021-01-28 1:32 ` Stephen Hemminger
2021-01-28 1:16 ` [dpdk-dev] [PATCH v2] " Stephen Hemminger
2021-02-12 1:38 ` [dpdk-dev] [RFC] pflock: add implementation of phase-fair locks Stephen Hemminger
2021-02-28 17:21 ` [dpdk-dev] [PATCH v1] pflock: implementation of phase-fair reader writer locks Stephen Hemminger
2021-03-03 18:30 ` [dpdk-dev] [PATCH v2] " Stephen Hemminger
2021-03-03 19:19 ` [dpdk-dev] [PATCH v3] " Stephen Hemminger
2021-03-26 17:17 ` Stephen Hemminger
2021-03-29 3:14 ` Honnappa Nagarahalli
2021-03-29 17:22 ` Stephen Hemminger [this message]
2021-03-29 18:09 ` Honnappa Nagarahalli
2021-03-29 19:58 ` Stephen Hemminger
2021-03-30 0:18 ` Honnappa Nagarahalli
2021-03-30 4:56 ` Stephen Hemminger
2021-03-30 5:00 ` [dpdk-dev] [PATCH v4] pflock: add " Stephen Hemminger
2021-03-30 5:14 ` Stephen Hemminger
2021-03-31 4:19 ` Honnappa Nagarahalli
2021-03-31 16:32 ` Stephen Hemminger
2021-04-02 1:37 ` Stephen Hemminger
2021-04-02 1:42 ` [dpdk-dev] [PATCH v5] pflock: implementation of " Stephen Hemminger
2021-04-06 21:56 ` Honnappa Nagarahalli
2021-04-06 22:33 ` Stephen Hemminger
2021-04-07 0:17 ` Honnappa Nagarahalli
2021-04-07 15:09 ` Ananyev, Konstantin
2021-04-14 15:36 ` David Marchand
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