Hi all you carpenters and other Varnish using folk, There are couple of things in the output of varnishstat that puzzle me a little..
MAIN.sess_drop 0 0.00 Sessions dropped MAIN.sess_dropped 3809332 0.32 Sessions dropped for thread MAIN.fetch_no_thread 58746 0.01 Fetch failed (no thread) MAIN.pools 2 . Number of thread pools MAIN.threads 1255 . Total number of threads I've got 2 pools of 4000 threads set in Varnish config and man varnish-counters says: sess_drop Count of sessions silently dropped due to lack of worker thread. sess_dropped Number of times session was dropped because the queue were too long already. See also parameter queue_max. fetch_no_thread beresp fetch failed, no thread available This tells me that there's no lack of worker threads (good!), but the thread queue length does get too long and subsequently sessions get dropped (bad!). Also backend fetch failed due to no threads being available (what?) Now the puzzling bit :) 1) why would the thread queue get too long if there seems to be NO lack of threads to use? 2) why would there be no threads if there seems to be NO lack of threads 3) 'See also the parameter queue_max' - but I cannot find any mention of such parameter anywhere around? Where does this ellusive paramater live then? Could anybody shed bit of light on this for me? -- Regards Viktor Villafuerte Optus Internet Engineering t: +61 2 80825265 _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
