Question about threads

Michael S. Fischer michael at
Thu Jun 19 17:05:21 CEST 2008

On Thu, Jun 19, 2008 at 5:37 AM, Rafael Umann <rafael.umann at>

> > What is your request:connection ratio?
> Unfortunately now i dont have servers doing 20000 hits/second, and
> thats why i dont have stats for you.

Actually, it's right there in your varnishstat output:

   36189916       476.66       250.71 Client connections accepted
  404804204      5494.13      2804.30 Client requests received

Your request:connection ratio is > 10:1!  This is a very good situation to
be in.  varnish doesn't have to spawn nearly as many threads as it would if
the ratio were lower, as is common at many other sites.

> I have 6 servers runing this
> service now, each one doing 5500 hits/sec with 10% CPU usage, and this
> infrastructure scales to 20000 hits/sec each server.

It's probably inaccurate to assume that things will scale linearly :)

Best regards,

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