On 01.06.09 19:58, Poul-Henning Kamp wrote: > In message <[email protected]>, Andreas Jung writes: > > >> Running Varnish 2.0.4 on a Debian installation (dual-core, 2.8 GHz). >> >> Apache-Bench gives me a performance of 500-600 requests/second against >> a cached HTML page - even with an almost empty VCL configuration file. >> >> Squid gives me about 4000 requests/second on the same cached page. >> >> What is the best approach for narrowing down the bottleneck? >> > Examining varnishstat to see what happens. > At what in particular. Looking at varnishstat does not give me a clue about a possible problem.
> Varnish employs a kind of "slow-start" algorithm to thread creation > which does not play well with synthetic loads like ab. Typically > you have to precreate a suitable number of threads to avoid dropped > requests while varnish ramps up. > The test is not syntetic. The cache is "warm" and the slow performance remains the same after 100k requests. Andreas
begin:vcard fn:Andreas Jung n:Jung;Andreas org:ZOPYX Ltd. & Co. KG adr;quoted-printable:;;Charlottenstr. 37/1;T=C3=BCbingen;;72070;Germany email;internet:[email protected] title:CEO tel;work:+49-7071-793376 tel;fax:+49-7071-7936840 tel;home:+49-7071-793257 x-mozilla-html:FALSE url:www.zopyx.com version:2.1 end:vcard
_______________________________________________ varnish-misc mailing list [email protected] http://projects.linpro.no/mailman/listinfo/varnish-misc
