Re: SMP Re-ordering ?

netdev

Re: SMP Re-ordering ?

from [jamal]

To:	Yan-Fa Li <yanfali@xxxxxxxxx>
Subject:	Re: SMP Re-ordering ?
From:	jamal <hadi@xxxxxxxxxx>
Date:	Fri, 19 Apr 2002 06:58:24 -0400 (EDT)
Cc:	<netdev@xxxxxxxxxxx>
In-reply-to:	<20020419021031.24839.qmail@web13003.mail.yahoo.com>
Sender:	owner-netdev@xxxxxxxxxxx

Yan,

On Thu, 18 Apr 2002, Yan-Fa Li wrote:

> However, a network device I'm testing between my hosts
> keeps seeing re-ordered TCP sessions.  When I reboot and
> specify maxcpus=1 and re-run the test I get none.
>

Strange indeed.

> Am I doing something really wrong here or does this
> workaround no longer work ?
>

IRQ affinity should work and so should NAPI.
How are you proving packets are re-ordered? Could it be the device
driver?

cheers,
jamal

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