[wellylug] High load averages but no apparent cause
Daniel Reurich
daniel at centurion.net.nz
Mon Mar 22 17:02:33 NZDT 2010
On Mon, 2010-03-22 at 16:49 +1300, David Harrison wrote:
> Hi,
> Has anyone experienced high-load averages but haven't been able to see
> processes that are causing it?
>
>
> I've got an Ubuntu Server 9.10 instance who's load average ranges
> between 1.0 and 3.0 for most of the day, yet tools like top and iostat
> don't reveal any issues.
> i.e. The load averages can be up around 1.5 whilst the maximum process
> viewed in top is sitting at 5% of the CPU.
>
>
> Anyone know of any other good tools for identifying the cause of
> server load if the obvious ones fail?
>
What's the wait state like (in top it's the %wa value).
Chances are that you have some serious I/O blocking going on which could
be a slow or failing harddisk or something like that.
--
Daniel Reurich.
Centurion Computer Technology (2005) Ltd
Mobile 021 797 722
More information about the wellylug
mailing list