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From: Thomas Monjalon <thomas@monjalon.net>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"olivier.matz@6wind.com" <olivier.matz@6wind.com>,
	"arybchenko@solarflare.com" <arybchenko@solarflare.com>,
	"jielong.zjl@antfin.com" <jielong.zjl@antfin.com>,
	"Eads, Gage" <gage.eads@intel.com>
Subject: Re: [dpdk-dev] [PATCH v4 2/2] mempool/ring: add support for new ring sync modes
Date: Wed, 15 Jul 2020 11:59:37 +0200
Message-ID: <1788207.j1zkQJbEXe@thomas> (raw)
In-Reply-To: <BYAPR11MB3301C9209BB07DABEBC425699A610@BYAPR11MB3301.namprd11.prod.outlook.com>

14/07/2020 11:16, Ananyev, Konstantin:
> > 
> > 13/07/2020 17:50, Konstantin Ananyev:
> > > Two new sync modes were introduced into rte_ring:
> > > relaxed tail sync (RTS) and head/tail sync (HTS).
> > > This change provides user with ability to select these
> > > modes for ring based mempool via mempool ops API.
> > >
> > > Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> > > Acked-by: Gage Eads <gage.eads@intel.com>
> > > ---
> > > --- a/doc/guides/mempool/ring.rst
> > > +++ b/doc/guides/mempool/ring.rst
> > > @@ -29,6 +29,16 @@ and can be selected via mempool ops API:
> > >    Underlying **rte_ring** operates in multi-thread producer,
> > >    single-thread consumer sync mode.
> > >
> > > +- ``ring_mt_rts``
> > > +
> > > +  For underlying **rte_ring** both producer and consumer operate in
> > > +  multi-thread Relaxed Tail Sync (RTS) mode.
> > > +
> > > +- ``ring_mt_hts``
> > > +
> > > +  For underlying **rte_ring** both producer and consumer operate in
> > > +  multi-thread Haad-Tail Sync (HTS) mode.
> > 
> > Typo Haad -> Head
> 
> Will fix.
> 
> > 
> > Please explain what these modes mean and why/when use them.
> > 
> 
> We have quite detailed explanation in ring library guide:
> https://doc.dpdk.org/guides/prog_guide/ring_lib.html
> 7.6. Producer/consumer synchronization modes
> So here, I put a link to ring library guide for those who need more details.
> I can copy&paste same text here too,
> but it probably not much point in such duplication.

Do not duplicate.
Please add a direct link to the section:
https://doc.dpdk.org/guides/prog_guide/ring_lib.html#mp-rts-mc-rts

From a user perspective, I was looking for recommendation about
which mode is preferred in which case.
Maybe few words about what is an "overcommitted systems"?



  reply	other threads:[~2020-07-15  9:59 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-21 13:20 [dpdk-dev] [PATCH 20.08] " Konstantin Ananyev
2020-06-29 16:10 ` [dpdk-dev] [PATCH v2] " Konstantin Ananyev
2020-07-09 16:18   ` Olivier Matz
2020-07-09 17:55     ` Ananyev, Konstantin
2020-07-10 12:52       ` Olivier Matz
2020-07-10 15:15         ` Ananyev, Konstantin
2020-07-10 15:20           ` Ananyev, Konstantin
2020-07-13 13:30             ` Olivier Matz
2020-07-13 14:46               ` Ananyev, Konstantin
2020-07-13 15:00                 ` Olivier Matz
2020-07-13 16:29                   ` Ananyev, Konstantin
2020-07-10 16:21   ` [dpdk-dev] [PATCH v3] " Konstantin Ananyev
2020-07-10 22:44     ` Thomas Monjalon
2020-07-13 12:58       ` Ananyev, Konstantin
2020-07-13 13:57         ` Thomas Monjalon
2020-07-13 15:50     ` [dpdk-dev] [PATCH v4 0/2] " Konstantin Ananyev
2020-07-13 15:50       ` [dpdk-dev] [PATCH v4 1/2] doc: add ring based mempool guide Konstantin Ananyev
2020-07-13 15:50       ` [dpdk-dev] [PATCH v4 2/2] mempool/ring: add support for new ring sync modes Konstantin Ananyev
2020-07-13 17:37         ` Thomas Monjalon
2020-07-14  9:16           ` Ananyev, Konstantin
2020-07-15  9:59             ` Thomas Monjalon [this message]
2020-07-15 14:58       ` [dpdk-dev] [PATCH v5 0/2] " Konstantin Ananyev
2020-07-15 14:58         ` [dpdk-dev] [PATCH v5 1/2] doc: add ring based mempool guide Konstantin Ananyev
2020-07-15 14:58         ` [dpdk-dev] [PATCH v5 2/2] mempool/ring: add support for new ring sync modes Konstantin Ananyev
2020-07-21 17:25           ` David Marchand

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