From: Ben Greear <greearb@candelatech.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 20:11:48 -0700 [thread overview]
Message-ID: <3D912974.7010308@candelatech.com> (raw)
In-Reply-To: 20020925112731.A19934@toad.postech.ac.kr
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
>
I will be interested to hear if your tests can generate heavy traffic
for more than a few hours...my machine keeps crashing when doing this
kind of test.
How many packets are you trying to send?
Also, try loading the NIC with TxDescriptors=4096 RxDescriptors=1024
Enjoy,
Ben
--
Ben Greear <greearb@candelatech.com> <Ben_Greear AT excite.com>
President of Candela Technologies Inc http://www.candelatech.com
ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear
next prev parent reply other threads:[~2002-09-25 3:11 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
2002-09-25 3:11 ` Ben Greear [this message]
2002-09-25 19:32 ` Nivedita Singhvi
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