Date: Tue, 22 Jan 2008 19:34:20 +0100 From: Bartosz Giza <gizmen@blurp.pl> To: Harti Brandt <harti@freebsd.org>, freebsd-current@freebsd.org Subject: Re: bsnmpd daemon eating all cpu Message-ID: <200801221934.20774.gizmen@blurp.pl> In-Reply-To: <20080122172058.Y94121@knop-beagle.kn.op.dlr.de> References: <200801221438.53254.gizmen@blurp.pl> <20080122172058.Y94121@knop-beagle.kn.op.dlr.de>
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Tuesday 22 of January 2008 17:25:15 Harti Brandt napisał(a):
> Hi,
>
> On Tue, 22 Jan 2008, Bartosz Giza wrote:
>
> BG>I am using dell poweredge sc440 router with one xeon dual core cpu.
> BG>This is basicly only router for dummynet firewall dhcpd and named.
> BG>I want to run bsnmpd daemon but when i start it it starts eating all cpu
> from BG>one core.
> BG>I have run truss to check what it is doing and i have got huge amount of
> such BG>syscalls
> BG>gettimeofday({1201008182.366354},0x0) = 0 (0x0)
> BG>
> BG>I want to use this daemon because it is in base system but if i could
> not run BG>this daemon in normal way i will be forced to use net-snmpd
> port. BG>I have basic config with hotres module added.
> BG>I am running freebsd 7.0-prerelease.
> BG>Alsa what is strange i have exactly the same machine with freebsd
> BG>7.0-prerelase but with only one network card for testing and bsnmpd
> behaves BG>normal.
> BG>Could some one help me with this. I can send dump from truss or even do
> some BG>more testing.
>
> Could you please disable all modules? Just comment out all lines starting
> from the Load MIB-2 module line. What does it do then?
When i turn off all modules bsnmpd uses 0% of cpu. When i have added this
snmp_mibII.so module it started again to use 100% of one core.
On other UP kernels with 7-PRE bsnmpd behaves good. And also when i was trying
to find what is going on i found that it happens when there is quite bit of
traffic on interfaces.
For test purposes i have downed lan interface and bsnmpd stopped to use 100%
of cpu. And when i have brought up lan interface bsnmpd started again to use
100% od cpu. So it is related to IP traffic.
Right now i am using net-snmpd daemon and it uses almoust nothing of cpu.
--
Pozdrawiam
Bartosz Giza
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