From: Benjamin LaHaise <bcrl@redhat.com>
To: Hyochang Nam <cannon@postech.ac.kr>
Cc: netdev@oss.sgi.com
Subject: Re: [Question] SMP for TCP/IP Stack
Date: Tue, 24 Sep 2002 22:35:01 -0400 [thread overview]
Message-ID: <20020924223501.K2531@redhat.com> (raw)
In-Reply-To: <20020925112731.A19934@toad.postech.ac.kr>; from cannon@postech.ac.kr on Wed, Sep 25, 2002 at 11:27:31AM +0900
Have you made sure each nic is on a separate interrrupt and that those
interrupts are bound to different cpus?
-ben
On Wed, Sep 25, 2002 at 11:27:31AM +0900, Hyochang Nam wrote:
>
> Can Linux Kernel 2.4.X handle two IP Packets at the same time
> in a SMP machine which has two CPUs?
> I have a SMP machine which equips two Intel Xeon CPUs and two
> Intel Gigabit Network Cards. When I sent small IP Packets
> to the machine, most of packets are dropped. When I watch
> CPU utlization with TOP program, only one CPU shows high value
> but the other shows much low value, ie. 10% CPU utlization.
> My test shows current IP Stack in Linux Kernel cannot provide
> SMP Processing properly. But, some articles said Linux Kernel 2.4
> gives true SMP processing. What do you think my problem is?
>
> Best regards,
>
> Hyochang Nam
>
--
GMS rules.
next prev parent reply other threads:[~2002-09-25 2:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-25 2:27 [Question] SMP for TCP/IP Stack Hyochang Nam
2002-09-25 2:35 ` Benjamin LaHaise [this message]
2002-09-25 3:11 ` Ben Greear
2002-09-25 19:32 ` Nivedita Singhvi
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