From: Scott Wood <scottwood@freescale.com>
To: Scott Wood <scottwood@freescale.com>
Cc: Alexandre Bounine <Alexandre.Bounine@tundra.com>,
linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] Fix Tsi108 ethernet driver performance
Date: Fri, 13 Jul 2007 15:32:32 -0500 [thread overview]
Message-ID: <4697E160.9000009@freescale.com> (raw)
In-Reply-To: <4697E08B.6080700@freescale.com>
Scott Wood wrote:
> Wouldn't this cause latencies of up to a second in responding to
> received packets? I'd think that would be considered excessive.
>
> And shouldn't NAPI be reducing the RX interrupt load anyway?
Sorry, I missed that you reduced the interval to 20 ms. Still, a bit on
the high side, and a source of wasted CPU cycles when the network isn't
heavily loaded. How much of a difference in CPU usage did you see with
this patch?
-Scott
next prev parent reply other threads:[~2007-07-13 20:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-13 20:00 [PATCH] Fix Tsi108 ethernet driver performance Alexandre Bounine
2007-07-13 20:28 ` Scott Wood
2007-07-13 20:32 ` Scott Wood [this message]
2007-07-16 17:25 ` Alexandre Bounine
-- strict thread matches above, loose matches on Subject: below --
2007-07-16 17:36 Alexandre Bounine
2007-07-16 22:27 ` Jeff Garzik
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