Not too sure what's going on. I would recommend to turn on debug options - https://docs.trafficserver.apache.org/en/latest/admin-guide/files/records.config.en.html#proxy-config-diags-debug-enabled And see the messages in traffic.out and see where it is stalling for some requests
Kit On Wed, Feb 27, 2019 at 7:35 PM Jason Yang <[email protected]> wrote: > > Hi Kit, > Thank you for your quick reply! It is the second, I run "for i in `seq 1 > 2000`; do curl 3.94.168.82:8080; done”, then only a few responses are back. > (the ip is valid, you can try too). > I checked the var/log/ directory and I don’t see any problem shown in the > log except almost everything is miss. > I am using an unmodified ATS v8.0.2, so I suspect it is my setting > problem, I am testing it on AWS and I have attached my configs below. (I know > the value are weird, this is for testing) > Thank you! > > Records.config > proxy.config.http.insert_response_via_str has changed > Current Value : 2 > Default Value : 0 > proxy.config.http.keep_alive_no_activity_timeout_in has changed > Current Value : 30000 > Default Value : 120 > proxy.config.http.keep_alive_no_activity_timeout_out has changed > Current Value : 30000 > Default Value : 120 > proxy.config.http.cache.required_headers has changed > Current Value : 0 > Default Value : 2 > proxy.config.cache.ram_cache.size has changed > Current Value : 1288490188 > Default Value : -1 > proxy.config.cache.ram_cache_cutoff has changed > Current Value : 128000 > Default Value : 4194304 > proxy.config.url_remap.pristine_host_hdr has changed > Current Value : 1 > Default Value : 0 > proxy.config.net.sock_option_flag_in has changed > Current Value : 30000 > Default Value : 5 > proxy.config.net.sock_option_flag_out has changed > Current Value : 30000 > Default Value : 1 > proxy.config.http.chunking_enabled has changed > Current Value : 0 > Default Value : 1 > proxy.config.http.origin_min_keep_alive_connections has changed > Current Value : 1 > Default Value : 0 > proxy.config.cache.ram_cache.use_seen_filter has changed > Current Value : 0 > Default Value : 1 > > > Best, > Jason > > > On Feb 27, 2019, at 22:13, Shu Kit Chan <[email protected]> wrote: > > By "stall", you mean > > 1) ATS stops accepting requests altogether ? or > 2) One particular request is stalled and the other requests are fine? > > If it is the first, I will use gdb to look at the process and see if > there is anything locked or waiting. > If it is the second, I will log the milestones in access log and see > if it can tell where it is stopped. I will also probably turn on debug > messages and see if there's anything going on as well. > > Kit > > On Wed, Feb 27, 2019 at 7:08 PM Jason Yang <[email protected]> wrote: > > > Hi all, > I have setup a trafficserver and somehow every few transactions, it will > stall, what could be wrong and what’s the best way to debug this? Thank you! > > > Jason > >
