> Should I open a phab ticket on this? Yes please.
On Thu, Jun 25, 2020 at 2:55 PM Roy Smith <[email protected]> wrote: > > Heh, my mail about NFS being involved cross paths with yours. Thanks for > digging into this for me. > > Should I open a phab ticket on this? > > > > On Jun 25, 2020, at 3:50 PM, YiFei Zhu <[email protected]> wrote: > > > > Looks like writev syscall does happen instantly, and tail on the host > > that is running the uwsgi process is also returning the newly written > > data instantly. Tail on a bastion host seems to see seconds of delay > > for me, whether I use `tail -f` `tail -F` or `watch tail`. However, > > the delay is gone if I use `tail -f` on the uwsgi host. Looks like the > > kernel is buffering the data... > > > > YiFei Zhu > > > > On Thu, Jun 25, 2020 at 8:12 AM Roy Smith <[email protected]> wrote: > >> > >> https://tools.wmflabs.org/spi-tools/spi/ > >> > >> To generate a request, click the "Sock Info" button or the "Index" link. > >> > >> The log file is /data/project/spi-tools/uwsgi.log > >> > >> Thanks. > >> > >> > >> > >> On Jun 25, 2020, at 2:12 AM, YiFei Zhu <[email protected]> wrote: > >> > >> My guess is output stream buffering, at either the libc level or the > >> python level. > >> > >> Which tool is this? I can probably strace and see if that is the case. > >> > >> YiFei Zhu > >> > >> > >> On Wed, Jun 24, 2020 at 10:16 PM Roy Smith <[email protected]> wrote: > >> > >> > >> I'm running a web server with "webservice --backend=kubernetes python3.7". > >> As I tail the uwsgi.log file, requests to my server get logged with very > >> long delays. I just timed one at about a minute and a half between when > >> the request was served (03:07:57 UTC 2020) and when it showed up in the > >> log file (03:09:23 UTC 2020). > >> > >> What is going on here? Is there some way to make it not do this? > >> _______________________________________________ > >> Wikimedia Cloud Services mailing list > >> [email protected] (formerly [email protected]) > >> https://lists.wikimedia.org/mailman/listinfo/cloud > >> > >> > >> _______________________________________________ > >> Wikimedia Cloud Services mailing list > >> [email protected] (formerly [email protected]) > >> https://lists.wikimedia.org/mailman/listinfo/cloud > >> > >> > >> _______________________________________________ > >> Wikimedia Cloud Services mailing list > >> [email protected] (formerly [email protected]) > >> https://lists.wikimedia.org/mailman/listinfo/cloud > > > > _______________________________________________ > > Wikimedia Cloud Services mailing list > > [email protected] (formerly [email protected]) > > https://lists.wikimedia.org/mailman/listinfo/cloud > > > _______________________________________________ > Wikimedia Cloud Services mailing list > [email protected] (formerly [email protected]) > https://lists.wikimedia.org/mailman/listinfo/cloud _______________________________________________ Wikimedia Cloud Services mailing list [email protected] (formerly [email protected]) https://lists.wikimedia.org/mailman/listinfo/cloud
