From: "Nebojša Ćosić" <nebojsa@asnn.org>
To: Stanislav Meduna <stano@meduna.org>
Cc: "linux-rt-users@vger.kernel.org" <linux-rt-users@vger.kernel.org>
Subject: Re: e1000e 82574L transmit latency?
Date: Tue, 28 May 2013 16:15:58 +0200 [thread overview]
Message-ID: <20130528161558.4832d9ba@sth491dt.servo.net> (raw)
In-Reply-To: <51A4B9AD.3060209@meduna.org>
Дана Tue, 28 May 2013 16:05:33 +0200
Stanislav Meduna <stano@meduna.org> написа:
> On 28.05.2013 15:01, Nebojša Ćosić wrote:
>
> > Check
> > http://article.gmane.org/gmane.linux.rt.user/10163 for details
>
> Anyway, could you publish the patch? What do you mean
> by "effectively disabling queuing" - that the sending threads
> will wait until the packet is out or that to-be-queued
> packets are thrown away?
>
> Thanks
Sending threads are going to sleep on mutex, instead of just passing by
and leaving packets in tx queue for later sending.
Patch is very simple - just comment out spin_* and HARD_TX_* calls in
sch_direct_xmit()
--
Nebojša
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prev parent reply other threads:[~2013-05-28 14:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-28 12:45 e1000e 82574L transmit latency? Stanislav Meduna
2013-05-28 13:01 ` Nebojša Ćosić
2013-05-28 13:49 ` Stanislav Meduna
2013-05-28 14:09 ` Nebojša Ćosić
2013-05-28 14:05 ` Stanislav Meduna
2013-05-28 14:15 ` Nebojša Ćosić [this message]
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