Re: Tuning varnish for high load

2008-03-08 Thread Dag-Erling Smørgrav
"Poul-Henning Kamp" <[EMAIL PROTECTED]> writes: > Do notice, that if you have a high hit ratio under high traffic, > adding more thread pools is recommended to lower the mutex > congestion. This is as good an occasion as any to mention that these parameters are poorly named; thread_pool_{min,max}

Re: Tuning varnish for high load

2008-03-05 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, "Mich ael S. Fischer" writes: >Funny you should ask, I've been spending a lot of time with Varnish in >the lab. Here are a few observations I've made: >- When the cache hit ratio is very high (i.e. 100%), we discovered >that Varnish's default configuration of thre

Re: Tuning varnish for high load

2008-03-04 Thread Michael S. Fischer
On Tue, Mar 4, 2008 at 1:53 AM, Henning Stener <[EMAIL PROTECTED]> wrote: > > Are you sending one request per connection and closing it, or are you > serving a number of requests to 10K different connections? In the last > case how many requests/sec are you seeing? In our test, we sent about 20

Re: Tuning varnish for high load

2008-03-04 Thread Henning Stener
Are you sending one request per connection and closing it, or are you serving a number of requests to 10K different connections? In the last case how many requests/sec are you seeing? I have ran a small test against 1.1.2 release on a 8-cpu (dual quad-core) system with 4GB RAM running Debian etch

Re: Tuning varnish for high load

2008-02-29 Thread Michael S. Fischer
On Thu, Feb 28, 2008 at 9:52 PM, Mark Smallcombe <[EMAIL PROTECTED]> wrote: > What tuning recommendations do you have for varnish to help it handle high > load? Funny you should ask, I've been spending a lot of time with Varnish in the lab. Here are a few observations I've made: (N.B. We're

Tuning varnish for high load

2008-02-29 Thread Mark Smallcombe
We are running varnish (default config) in production and are tuning it to handle high load. We have 4 load balanced varnish servers (64 bit RedHat 5.1, 4G of RAM, everything on a gigabit network). We find that under high load varnish is unable to serve pages or the keepalive pages to our load bal