Re: e1000e 82574L transmit latency?

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Дана Tue, 28 May 2013 16:05:33 +0200
Stanislav Meduna <stano@xxxxxxxxxx> 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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