Hi Bryan, We decided to create 4 volumes. No strong reasoning behind it, just 2 seemed too little to avoid those blocking timeouts and 4 was next comfortable to set using 25%.
Veiko 2018-02-23 21:21 GMT+02:00 Bryan Call <[email protected]>: > Veiko, > > How many volumes did you create? > > -Bryan > > > On Feb 23, 2018, at 3:14 AM, Veiko Kukk <[email protected]> wrote: > > Hi, Mateusz > > I wonder if you might experience same issue as me. > https://github.com/apache/trafficserver/issues/3057 > > For me, solution, or I would rather call it workaround was to create > volumes. > > Unfortunately, documentation regarding to storage performance > issues/tuning is missing. > > Best regards, > Veiko > > > 2018-02-22 13:59 GMT+02:00 Mateusz Zajakala <[email protected]>: > >> Hi, >> >> I have a problem - from time to time my ATS 7.2.1 has problems with >> serving static files from origin, client transactions last over 10s and I >> see the following diagnostic (I have enabled logging "slow requests") >> >> cache_open_read_begin: 0.000 cache_open_read_end: 10.640 >> >> Any requests to the same URL are blocked for over 10s. Restarting ATS >> solves the problem. >> >> What does it mean? Does it have to do with open_read feature? but the >> timeouts don't add... >> >> Any suggestions appreciated! >> >> Here's my records.config with configs related to avoiding thundering >> herd... >> >> CONFIG proxy.config.cache.enable_read_while_writer INT 1 >> CONFIG proxy.config.http.background_fill_active_timeout INT 0 >> CONFIG proxy.config.http.background_fill_completed_threshold FLOAT >> 0.000000 >> CONFIG proxy.config.cache.read_while_writer.max_retries INT 5 >> CONFIG proxy.config.cache.read_while_writer_retry.delay INT 200 >> CONFIG proxy.config.http.cache.max_open_read_retries INT 5 >> CONFIG proxy.config.http.cache.open_read_retry_time INT 200 >> >> CONFIG proxy.config.http.cache.open_write_fail_action INT 2 >> >> > >
