Re: Varnish Prefetch

2010-01-24 Thread Paras Fadte
Can anybody please respond to this query ? Thank you. On Fri, Jan 22, 2010 at 11:02 AM, Paras Fadte wrote: > Hi, > > Is prefetch by default enabled in varnish ? I have following in VCL . A > value of -30 seconds would mean that the object would be checked 30 seconds > before its expiry time is

Re: varnish crashes

2010-01-24 Thread Michael S. Fischer
On Jan 24, 2010, at 10:40 AM, Angelo Höngens wrote: > > According to top, the CPU usage for the varnishd process is 0.0% at 400 > req/sec. The load over the past 15 minutes is 0.45, probably mostly > because of haproxy running on the same machine. So I don't think load is > a problem.. My problem

Re: varnish crashes

2010-01-24 Thread Angelo Höngens
On 24-1-2010 18:57, Michael S. Fischer wrote: >> Thread_pool_max is set to 500 threads.. But I just increased it to >> 4000 (as per http://varnish.projects.linpro.no/wiki/Performance), >> as 'top' shows me it's using around 480~490 threads now.. >> >> You suggest lowering it, what would be the eff

Re: varnish crashes

2010-01-24 Thread Michael S. Fischer
On Jan 24, 2010, at 7:23 AM, Angelo Höngens wrote: >> What is thread_pool_max set to? Have you tried lowering it? We have >> found that on systems with very high cache-hit ratios, 16 threads per >> CPU is the sweet spot to avoid context-switch saturation. > > [ang...@nmt-nlb-03 ~]$ varnishadm -

Re: varnish crashes

2010-01-24 Thread Angelo Höngens
On 23-1-2010 20:57, Michael Fischer wrote: > On Sat, Jan 23, 2010 at 2:20 AM, Angelo Höngens > wrote: > > > (second try, I found out I was subscribed using a wrong email address) > > Hey, > > I am having some problems with Varnish. Unfortunately (depen