System slowness with latest updates

[dragoran]

Steven Haigh wrote:

>On Sat, March 11, 2006 3:17 pm, Steven Haigh wrote:
>  
>
>>Hi all,
>>
>>This one has me kind of confused, as I can't find anything common to cause
>>a slowness in the system. The slowness I'm seeing is that processes
>>running on the system become really slow and take a long time to do what
>>the should do. It's not a system load issue, as I see:
>># uptime
>> 15:15:51 up  7:46,  8 users,  load average: 0.05, 0.05, 0.00
>>
>>Things like snmpd queries timing out, when restarting dhcpd the syslog
>>output to /var/log/messages takes around 2 seconds per line.
>>
>>I've looked around and can't see anything out of place, or anything
>>obviously broken. Anyone have any ideas on this?
>>    
>>
>
>As a followup to this, I've noticed that the syslog is around 3-4 minutes
>behind the events that happen. say I login to an IMAP server, the maillog
>shows the login at 16:57:48 - if I breat out of that and show the date,
>the clock will show 3-4 minutes later (ie 17:01) - even though the line
>has only appeared seconds ago.
>
>Even things such as spamassassin is taking 217 seconds to scan a 2Kb
>email. snmpd results to localhost are timing out - even though the process
>is listening.
>
>It takes 45-50 seconds to log out of a su shell back to the logged in
>user, the same for becoming root via 'su -'.
>
>I have never seen this kind of behaviour on a system before - especially
>when the CPU is 99% idle. Has anyone come across this type of behaviour
>before?
>
>the system is:
>model name      : AMD Sempron(tm) Processor 2800+
>stepping        : 0
>cpu MHz         : 1602.495
>
>It has 1 Gb of RAM, and seemed to work perfectly until last nights updates.
>
>  
>
have you tryed a different kernel?