On Thu, 10 May 2007, Ask Bjørn Hansen wrote:
On May 10, 2007, at 7:31 PM, Barry Abrahamson wrote:
We are currently testing Varnish as a reverse proxy to serve images. We
are running into problems where the varnishd child (and sometimes parent),
will die unexpectedly.
FWIW I am seeing something similar. I haven't seen anything in the syslog or
tried running varnishlog for long enough to catch it happening (which I why I
didn't post). In this installation (on RHEL4) increasing the cache size did
seem to help on the frequency.
It never happens when it's idle-ish (<100-150 rps) but in the busy hours
(2-500rps) it happens frequently. In the cache hit ratio (I love munin!)
you can see that pretty clearly - stable or slowly increasing average ratio
during the off-peak hours - when it's busy it drops every time there's a
crash...
http://tmp.askask.com/2007/05/varnish_cachehitratio-day.png
Interesting.. How did you setup rrdtool to graph the hit ratio?
- Andreas R.
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