RE: Hit ratio dropped significantly after recent upgrades

2016-12-09 Thread Justin Lloyd
I really am looking at what's happening as well. I have been looking at both varnishlog and varnishtop and I see a lot of thumbnail image requests being sent to the backend when there is still plenty of room for them in the cache, so even though there are a lot of thumbnail images, I shouldn't

Re: Hit ratio dropped significantly after recent upgrades

2016-12-09 Thread Dridi Boukelmoune
> To reiterate on a point in another of my responses in this thread, I think it > may be something about MediaWiki thumbnail images not being cached properly > despite our current VCL in that regard not having changed from how it worked > prior to the upgrade during which time we were seeing a

RE: Hit ratio dropped significantly after recent upgrades

2016-12-09 Thread Justin Lloyd
We may be seeing this issue though I can't confirm since I all of my servers are running 4.1.1 now, but I calculate my hit ratio based on the total number of Varnish connections and how many are sent to Apache, per server. Again, for reference from my first email, here's my Graphite dashboard

RE: Hit ratio dropped significantly after recent upgrades

2016-12-09 Thread Justin Lloyd
Hello! Yes, it is Varnish 4.1.1-1 from the Ubuntu 16.04 repo. I'll look at the issue you've linked and see if I can match it to our situation. Thanks! Justin -Original Message- From: Dag Haavi Finstad [mailto:da...@varnish-software.com] Sent: Friday, December 9, 2016 4:47 AM To: Justin

Re: Hit ratio dropped significantly after recent upgrades

2016-12-09 Thread Dag Haavi Finstad
Hi Is this Varnish 4.1 ? We have an unsolved bug open describing something very similar, https://github.com/varnishcache/varnish-cache/issues/1859 On Thu, Dec 8, 2016 at 9:26 PM, Justin Lloyd wrote: > I have been doing a lot of digging with varnishtop and varnishlog, and our