From: Ben Greear <greearb@candelatech.com>
To: Felix Radensky <felix@allot.com>
Cc: Robert Olsson <Robert.Olsson@data.slu.se>,
netdev@oss.sgi.com, "Feldman, Scott" <scott.feldman@intel.com>
Subject: Re: Ethernet bridge performance
Date: Sun, 10 Aug 2003 11:13:14 -0700 [thread overview]
Message-ID: <3F368B3A.3070009@candelatech.com> (raw)
In-Reply-To: <3F3601F3.6000001@allot.com>
Felix Radensky wrote:
> I've mentioned in my first post that there are zero drops at driver level
> (as shown by ifconfig). I'm also using IRQ affinity feature, binding
> interrupts
> of eth0 and eth1 to CPU0, so I guess NIC ring RX/TX size, link HW_FLOW
> control
> and affinity are not my problems.
Maybe try un-binding the cpus, or binding them to different procs?
>
> Speaking of checksumming. This can be a problem indeed. ethtool -S shows
> a lot
> of rx_csum_offload errors. Scott, what could possibly be a problem ? The
> NIC
> is dual port 82546, driver is 5.1.13-k1.
Why would a bridge be checksumming anything?
>
> I've failed to find a discussion about ksoftird priority. Can someone
> please
> provide a link.
I've increased my performance by setting softirqd priority to -18,
but since you seem to be dropping someplace other than the driver,
I'm not sure that will help.
>
> Thanks a lot.
>
> Felix.
>
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2003-08-10 18:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-07 9:12 Ethernet bridge performance Felix Radensky
2003-08-07 15:59 ` Stephen Hemminger
2003-08-07 16:05 ` Felix Radensky
2003-08-07 16:57 ` Ben Greear
2003-08-07 17:19 ` Felix Radensky
2003-08-07 19:09 ` Robert Olsson
2003-08-07 19:21 ` jamal
2003-08-07 22:49 ` Robert Olsson
2003-08-10 7:32 ` Felix Radensky
2003-08-11 2:55 ` jamal
2003-08-11 7:52 ` Robert Olsson
[not found] ` <3F3601F3.6000001@allot.com>
2003-08-10 18:13 ` Ben Greear [this message]
2003-08-10 19:47 ` Andi Kleen
2003-08-10 21:49 ` Robert Olsson
2003-08-07 19:35 ` David S. Miller
2003-08-07 19:50 ` Ben Greear
2003-08-07 19:58 ` David S. Miller
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