From: Jeff Garzik <jgarzik@pobox.com>
To: "J.A. Magallon" <jamagallon@able.es>
Cc: linux-kernel@vger.kernel.org, linux-net@vger.kernel.org,
netdev@oss.sgi.com
Subject: Re: [PATCHES] 2.4.x net driver updates
Date: Tue, 17 Jun 2003 18:34:10 -0400 [thread overview]
Message-ID: <3EEF9762.2040900@pobox.com> (raw)
In-Reply-To: <20030617222750.GE13990@werewolf.able.es>
J.A. Magallon wrote:
> On 06.12, Jeff Garzik wrote:
>
>>BK users may issue a
>>
>> bk pull bk://kernel.bkbits.net/jgarzik/net-drivers-2.4
>>
>>Others may download the patch from
>>
>>ftp://ftp.kernel.org/pub/linux/kernel/people/jgarzik/patchkits/2.4/2.4.21-rc8-netdrvr2.patch.bz2
>>
>
>
> Any info about the RX_POLLING (NAPI) option for e1000 ?
> What is that for ?
NAPI enables a software polling mode, or software interrupt migitation
if you prefer to call it that. It kicks in at moderate to high packet
rates, allows the net stack to more globally balance net traffic, and
avoids problems associated with high packet load / DoS situations which
would otherwise max out a cpu.
But it's a new feature, so being conservative there is a staged rollout,
with NAPI support in e100[0] being an option that can be turned off.
Some drivers like tg3 simply always enable NAPI.
Jeff
next prev parent reply other threads:[~2003-06-17 22:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-12 19:49 [PATCHES] 2.4.x net driver updates Jeff Garzik
2003-06-17 22:27 ` J.A. Magallon
2003-06-17 22:34 ` Jeff Garzik [this message]
2003-06-17 22:40 ` David S. Miller
-- strict thread matches above, loose matches on Subject: below --
2003-06-20 3:59 Jeff Garzik
2003-06-06 5:40 Jeff Garzik
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