From: David Marchand <david.marchand@redhat.com>
To: Konstantin Ananyev <konstantin.ananyev@intel.com>
Cc: Bruce Richardson <bruce.richardson@intel.com>, dev <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] raw/ioat: fix termination descriptor for batch
Date: Tue, 20 Jul 2021 15:51:21 +0200 [thread overview]
Message-ID: <CAJFAV8yM3QJK6wPFV+A0D5-QOGh1La-CQqrJDdN=SWoC-8_Q6g@mail.gmail.com> (raw)
In-Reply-To: <YPGXYKlVoEa+VJ2D@bricha3-MOBL.ger.corp.intel.com>
On Fri, Jul 16, 2021 at 4:28 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> On Fri, Jul 16, 2021 at 02:50:27PM +0100, Konstantin Ananyev wrote:
> > When batch_size == 1, idxd has to add a dummy termination descriptor
> > to satisfy HW requirements.
> > Right now it uses NOP descriptor with FENCE flag.
> > This is excessive and fencing can slowdown things quite significantly.
> > The patch removes FENCE flag from termination dummy descriptor.
> > That helps to improve performance for no-burst scenarios.
> >
> > Fixes: 245efe544d8e ("raw/ioat: report status of completed jobs")
> >
> > Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Applied, thanks.
--
David Marchand
prev parent reply other threads:[~2021-07-20 13:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-16 13:50 Konstantin Ananyev
2021-07-16 14:27 ` Bruce Richardson
2021-07-20 13:51 ` David Marchand [this message]
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