Re: [squid-users] Occasional data corruption

ons 2003-04-23 klockan 12.44 skrev Gerard Eviston:

> So, squid-users, I'd be grateful for some advice on how to do load testing
> which would alert me to recurrences of the problem, and some help with
> debugging this difficult-to-repeat problem. I'm a bit stumped as to what I
> should try from here, but I'd rather work through the problem than work
> around it.

If it is only load you are after then you can try a polygraph with
checksums of the content (checksums not enabled by default). However, in
practice polygraph is probably too ordered and well formed to cause much
errors..

What is likely to give more information is to try to analyze the
corruption to see if there is any patterns in

  * what type of content gets corrupted
  * what clients requested it last with a TCP_MISS before the corruption
was detected
  * what type of corruption is seen
  * how long the corruption lasts. If forever until another TCP_MISS, or
if random and another TCP_HIT for the same object gives different
results without a TCP_MISS in between the two requests for the same URL.

Regards
Henrik

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