From: Mohan Sundaram <smohan@gmail.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] New hardware
Date: Wed, 23 Aug 2006 08:17:53 +0000 [thread overview]
Message-ID: <44EC0C61.7010505@vsnl.com> (raw)
In-Reply-To: <1156175178.44e9d54a18bd1@www.inbox.lv>
Marek Kierdelewicz wrote:
> Hi there,
>
>> I used a SunFire x2100 which has 2 Ghz Opteron and PCI-Xpress slot
>> into which I plugged in a dual port gigE Intel PCI-Xpress card.
>
> What was the software configuration of this host? What kernel
> have you used for the test (compiled for x86 or amd64; dual-core
> aware sheduler or not).
>
stock x86 32 bit kernel 2.4.20. No dual core optimisations.
> Out of the curiosity ... dual port nic generates one interrupt or two
> per port? I asume the first is more probable. This leads to another
> question - has interrupt been balanced between cores?
I'm unaware of how it was configured.
>
>> Got a raw forwarding performance of 800Kpps for 64B packets. This
>> beat a CISCO 3845 which gave 600Kpps.
>
> Thanks for the input :).
>
> Right now my production border router (BGP+some firewall rules+some QoS,
> vlans @ P4 3GHz Linux 2.6, 2xBroadcom PCI-X, 1xIntel E1000 PCI-X) is 91%
> saturated (CPU) at peek hours and during the time it forwards 344,8Kpps
> with avg. packet sized 69 bytes.
>
The Opteron was 100% utilised at 800Kpps for 64B pkts. I could do
bi-directional line rate on gigE for 512/1500B pkts (approx 500/164Kpps)
with 65%/25% cpu utilisation
> I'll try to determine raw forwarding performance when box goes out
> of production env, so we'll have a clear comparison picture.
>
> regards,
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next prev parent reply other threads:[~2006-08-23 8:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-21 15:46 [LARTC] New hardware Jurijs Petrovs
2006-08-21 16:16 ` Marek Kierdelewicz
2006-08-22 2:21 ` Mohan Sundaram
2006-08-23 7:51 ` Marek Kierdelewicz
2006-08-23 8:17 ` Mohan Sundaram [this message]
2006-08-23 8:21 ` Mohan Sundaram
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