sudden Increase in load on server running varnish

Paras Fadte plfgoa at
Tue Nov 18 09:22:34 CET 2008


I have been trying my hand at varnish , which although most of the
times tends to run without much of an issue, after running it for
about 6-7 hours there seems to be sudden increase in load on the
server with CPU usage going upto 100% and the number of worker threads
increasing to about 500 . Is this an issue associated with cleanup
when the cache becomes full in varnish ? The cache size used was
8GB(RAM disk) . Are there any parameters which could be applied to
handle this kind of sudden surge in load on the server ?

Any help in this regards will be appreciated and thanks in advance.

Server Config: Intel Xeon Quad core , OS: SUSE LINUX 10.1 (X86-64) with 20GB RAM

Varnish version used is 2.0.2

Thank you.


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