[rhn-users] Random high load - bizzare fix

[Charith Perera]

We just experienced another load spike on a machine, and running "up2date -l" 
fixed the problem. So I'm quite sure that it's not just a coincidence.

Charith Perera.


On Monday 07 March 2005 12:40 pm, Charith Perera wrote:
> Over the past few weeks, many of our machines running RHEL have been
> showing very high loads at random times. Some of the machines run Apache
> and postfix. The average load is usually around 0.5 on some machines and
> 0.0 on others. When the load spikes, it's usually around 3.0, and has
> reached 5.0 on some occations. We have tried turning off all services (NFS,
> NFS mounts, postfix, crond, etc) and Apache, none of which made any
> significant reduction in the load.
>
> On one occasion there were a few updates available for vim, cups, and cpio.
> Doing the updates fixed the load problem immediately, so I figured that the
> cpio may have had a problem. However, upon further inspection of the
> advisory, it seemed completely unrelated.
>
> On the most recent occurance of the load spike, I ran "up2date -l" and
> found that there were no updates available. However, immediately following
> the execution of the command, the load returned to the normal value.
>
> I am waiting to see if it works a third time. Until then, has anyone else
> experienced this? What could be raising the system load so high, and how
> does up2date fix the problem?
>
> Thanks,
>
>
> Charith Perera
>
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