yes, redis with PHP extension installed
Does the transaction recording go any deeper? Can you use newrelic? Other option is using xhprof, though that can be a bit of a pain to setup as your on your own mostly https://github.com/preinheimer/xhprof.
Thanks for looking, but I need more details to be able to trace this bottleneck 🙂
I think I can add your account to the Blackfire organization so you can profile the load from your end. You would need to create an account first
Done and ran 2 tests with and without REDIS
What I can see is a huge I/O wait in the wp_print_styles() that I think is used by your plugin. not sure why this happens.
Biggest times I can see spent by admin-ajax.php during the WP Rocket preloads. Do you have an idea what url is called during preload? We should test that url as well.
right now with the object cache enabled I cannot find the bottleneck anymore
does redis cache get flushed at wp rocket cache flusing? if not maybe this generates the whole problem
When wp-rocket flushes, it flushes data that wp-criticalcss has stored selectively with transients (which go to object cache). See https://github.com/pcfreak30/wordpress-cache-store.
Please contact me on skype, pcfreak309 or hangouts to talk about this more.
sent invite over hangouts. cannot literally speak now, I catched cold and lost my voice, but I can type. I also have webmetting server if you need screen sharing and control
Also did a bit of drilldowns myself and found the i/o time was inflated by a number of calls to the maxcdn.bootstrap.com server which I therefore tried to eliminate. wp menu is another big resource eater mainly processing time. Avada and fusion builder come next.
So the things seem not bad with this plugin instead it calls some of the other slow things. redis helps with that up to a point (db calls)
My main problem was that my server was sluggish during wp rocket preloads. During that window any legit visitors got huge TTFB time from the server. Still CPU and memory were under 50% so the only thing that could happen was the inflated PHP processing queue
maybe you got invite from adwords@dentfix
So I am satisfied now that actually my problems are not coming from this plugin. I fear more the bad redis.conf settings.
