There are also ways to abort the connection to avoid the close delay. > On Nov 21, 2018, at 8:18 AM, Robert Engels <reng...@earthlink.net> wrote: > > It could be a wait for tcp connection. If you are continually creating new > connections, the server will run out of file descriptors since some > connections will remain in a close wait state - so it has to wait for these > to finally close in order to make a new connection. > > You might want to make sure your test is reusing connections. > >> On Nov 21, 2018, at 8:15 AM, Alexandru Keszeg <akes...@pitechplus.com> wrote: >> >> That was my first thought as well, but monitoring doesn't show any long GC >> pauses. >> >> What seems odd is that I have not seen a "pause" between two query >> traces(check the attached image in the first post), only at the "start" of a >> request. >> >>> On Wed, Nov 21, 2018 at 3:34 PM Robert Engels <reng...@earthlink.net> wrote: >>> Maybe a full GC is occurring on the server ? That’s what I would look for. >>> >>>> On Nov 21, 2018, at 2:50 AM, akes...@pitechnologies.ro wrote: >>>> >>>> Randomly, some gRPC calls which usually complete in 20 milliseconds take a >>>> few seconds. >>>> We have Jager in place, traces show a few seconds where the call does >>>> nothing and then processing begins, which seems to imply queuing of some >>>> sorts? >>>> >>>> On the server side, we have fixed concurrency, a thread dump shows most of >>>> them idle. >>>> Our environment: Kuberentes 1.9 on Google Cloud, services are exposed >>>> using ClusterIP: None, clients connect using DNS load balancing >>>> >>>> - Is there some build-in queuing on the server side? >>>> - Is there any way to track the queue depth? >>>> - Any other tips on debugging this? >>>> <Selection_120.png> >>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "grpc.io" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to grpc-io+unsubscr...@googlegroups.com. >>>> To post to this group, send email to grpc-io@googlegroups.com. >>>> Visit this group at https://groups.google.com/group/grpc-io. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/grpc-io/3f8075e1-e261-45c9-865f-23285b98cca9%40googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout. >>>> <Selection_120.png> >> >> >> -- >> ____________________________________ >> >> >> >> Alexandru Keszeg >> Developer >> +40 747124216 >> Coratim Business Center >> Campul Painii nr.3-5 >> Cluj Napoca ROMANIA >> This message (including any attachment(s)) may be copyright-protected and/or >> contain privileged and confidential information intended for use by the >> above-mentioned recipient only. If you are not the intended recipient of >> this message, then please inform the sender immediately via the telephone >> number, fax number or e-mail address indicated above and promptly delete >> this message from your system. Any unauthorized copying, disclosure to >> third parties or use of this message (including any attachment(s)) is >> strictly prohibited. It is generally accepted that the security of >> electronic communications is not failsafe. Despite our best efforts, we >> cannot guarantee that electronic communications received were in fact sent >> by the purported sender and we shall not be liable for the improper or >> incomplete transmission of the information contained in this communication, >> nor for any delay in its receipt or damage to your system. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "grpc.io" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to grpc-io+unsubscr...@googlegroups.com. >> To post to this group, send email to grpc-io@googlegroups.com. >> Visit this group at https://groups.google.com/group/grpc-io. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/grpc-io/CACekFaEPNG6ZhXEZgyY-YwyNSE2V-aAgcsnCGcvN_nb13ovipg%40mail.gmail.com. >> For more options, visit https://groups.google.com/d/optout. > -- > You received this message because you are subscribed to the Google Groups > "grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To post to this group, send email to grpc-io@googlegroups.com. > Visit this group at https://groups.google.com/group/grpc-io. > To view this discussion on the web visit > https://groups.google.com/d/msgid/grpc-io/FFD79299-249F-47F3-88D8-3251B378B023%40earthlink.net. > For more options, visit https://groups.google.com/d/optout.
-- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/FC99E5C9-2F87-42EC-8FE2-F38E95912139%40earthlink.net. For more options, visit https://groups.google.com/d/optout.
