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From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de>
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Cc: Oliver Fromme <olli@lurza.secnetix.de>
Subject: Re: broken re(4)
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On Wed, 11 Jun 2008 17:26:29 +0200 (CEST) Oliver Fromme
<olli@lurza.secnetix.de> wrote about Re: broken re(4):

OF>  > On the other hand, I have not been able to get more than about
OF>  > 10MByte/s through the interfaces of this particular system. I have
OF>  > 1GBit-networking equipment, and the other systems (which are used
OF>  > as router) have no problem doing a throughput of >20MB/s. Even
OF>  > bonding the two interfaces using lagg(4) does not improve the
OF>  > performance - where else could be the bottleneck?

OF> A few questions or hints ...
OF>  - What is the CPU usage during your network test (user,
OF>    sys, intr, idle)?

I will test and report that tomorrow.

OF>  - Do you see errors in "netstat -i"?

None.

OF>  - Do you use jumbo frames?

No.

OF>  - Is polling enabled?

No. I tested polling on a lot of different machines earlier and never
found it to improve performance so far (same for jumbo frames, btw).

OF>  - Are there any network-related sysctls (/etc/sysctl.conf)
OF>    or kernel settings?  Have you enabled kernel debugging
OF>    features (INVARIANTS, WITNESS etc.)?

No, stock GENERIC, only with a lot of things disabled.

OF>  - Do you have any packet filter rules (PF, IPF, IPFW)?

No, not on this machine. The faster machines are router/firewalls, they do
filtering; so it should be something different...


cu
  Gerrit