Re: [squid-users] High load on squid machine after switching from reiserfs to ext3

In that case you are at an impasse, I'd say. ext3 doesn't work with
Squid (it may have improved in later versions...try the Red Hat 2.4.18
kernel--I was able to get it built and installed on a 7.2 system with
only two package upgrades to satisfy dependencies).

ReiserFS is trustworthy, in my experience. I have about 40 Squid boxes
in the field, some for two years, all running on ReiserFS. I have only
seen one FS corruption...and it was due to a faulty disk that had to be
replaced. In fact, given the troubles I've had with ext3, ReiserFS is
the only filesystem I trust for Squid. (I have a little test box
locally that started reporting disk full when there is 10GB of free
space, causing Squid to exit...it's running ext3).

But then, as I said, it is wise to recompile with ReiserFS built into
the kernel, rather than as a module. I always have, because there was a
time (maybe even as late as 2.4.9) that ReiserFS would cause problems
when built as a module. Turn off the checks and proc interface, as well.

Just MHO, of course.

Andreas Jung wrote:
> And I don't trust reiserfs...I have seen two boxes with corrupted
> reiserfs partitions...
>
> Andreas
> ----- Original Message -----
> From: "Joe Cooper" <joe@swelltech.com>
> To: "Andreas Jung" <andreas@zope.com>
> Cc: <squid-users@squid-cache.org>
> Sent: Tuesday, May 21, 2002 13:54
> Subject: Re: [squid-users] High load on squid machine after switching from
> reiserfs to ext3
>
>
>
>>Yep. Don't use ext3. ;-)
>>
>>I've been able to crash kernel 2.4.9 (the Red Hat RPM kernels) at will
>>when running a Squid workload on ext3. I never looked very deeply into
>>it, because the performance of ext3 isn't comparable to ReiserFS. It
>>may be worth your time to grab the latest kernel SRPM, and rebuild it
>>with ReiserFS built into the kernel (rather than as a module).
>>
>>I've had no problems with 2.4.9-31, on a quite large number of boxes.
>>
>>Andreas Jung wrote:
>>
>>>We are running Zope behind Squid 2.4Stable6 with squid in acceleration
>>
> mode.
>
>>>The squid box (dual Pentium III 1 GHz, RH 7.2, Linux 2.4.9-21smp, 2GB
>>
> Ram)
>
>>>has during busy hours a normal load of 0.2-0.3 . From time to time
>>>we see spikes over some hours where the load average of the machine
>>>is higher than 1.5 although there are no spikes in the CPU
>>>utilization. Also there is no increase in the number of incoming
>>
> requests.
>
>>>The only change we made was the switch from reiserfs to ext3 for the
>>
> cache
>
>>>partition since reiserfs corrupted its partition some time ago.
>>>
>>>Any insights on this issue?
>>>
>>>Thanks,
>>>Andreas
>>
>>--
>>Joe Cooper <joe@swelltech.com>
>>Web caching appliances and support.
>>http://www.swelltech.com
>>
>>
>
>

-- 
Joe Cooper <joe@swelltech.com>
Web caching appliances and support.
http://www.swelltech.com