Varnish 4 Performance Issues

Dridi Boukelmoune dridi at
Thu Sep 20 14:36:25 UTC 2018

On Thu, Sep 20, 2018 at 4:14 PM Junaid Mukhtar <junaid.mukhtar at> wrote:
> Hi
> we are in middle of upgrading from varnish 3.0.7 to varnish 4.1.10; but unfortunately all of the response times in the performance test are indicating an increase of at least 100%
> We have analyzed the logs and everything but can't get around this; the issue is not only for the non-cached pages but it's also impacting the cached pages. We are also struggling to analyze it further as well, any guidenace as to what we can do in terms of putting debug logging in would be helpful.
> One of the areas we are considering is to output response times, but it's proving difficult for me. Any suggestions


What is the output of `varnishadm` ?


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