Move to another server?

Sebastian Hagedorn Hagedorn at
Fri Jan 21 09:36:11 EST 2005


--On 29. Dezember 2004 5:26:06 Uhr -0600 John Wade <jwade at> wrote:

> One other thing to note, if you are using RHEL 3, be sure to get the
> latest kernel.   There was a bug in the file system caching code in the
> update 3 that kills any heavily used system with large amounts of memory
> (like our server) and lots of small files (like cyrus)   This showed up
> in our conversion testing and we had to backrev the kernel until the new
> one was released.

could you please specify the exact kernel versions you are referring to? 
I'm not sure which version update 3 was. We are currently running 
2.4.21-15.0.3.ELsmp. We can't really use a newer version, because we need 
IBM's sdd driver for SAN vpaths and they are slow in certifying new kernels 
... maybe telling them about specific issues might speed up the process.

We haven't really had problems like the ones you are describing, but we 
have one where the loopback interface gets stuck. All RedHat has to say 
about that is to try the most recent kernel, of course.

Thanks, Sebastian Hagedorn
Sebastian Hagedorn M.A. - RZKR-R1 (Gebäude 52), Zimmer 18
Zentrum für angewandte Informatik - Universitätsweiter Service RRZK
Universität zu Köln / Cologne University - Tel. +49-221-478-5587
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