On Tue, Jun 02, 2009 at 08:10:06AM +0200, Andreas Jung wrote: > Output of varnishstat:
(greedy-snipping) Seeing as how you're testing with only a concurrency of 10, I doubt thread startup is a big issue, but nevertheless, 12 threads is too low if you intend to use this for production. I advice setting thread_pool_min to reflect your actual expected load. I also see a few expiries, it's not really easy to tell from varnishstat what is causing the slowdowns, but it I would try setting up grace to ensure that cache misses don't drag down a significant number of threads. However, with only 10 concurrent requests, even one request going to the backend will cause a significant hit to the requestrate. To solve this, you'll have to either increase the concurrency of the test and/or increase the lifespan of the cached objects. Other than that, varnishstat -1 and some tinkering with varnishtop could further track down the lousy performance you're seeing. -- Kristian Lyngstøl Redpill Linpro AS Tlf: +47 21544179 Mob: +47 99014497
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