On 22/08/2014 09:47, anurag gupta wrote: > Thanks Mark. > > The same application is running in a jetty9 server. And I ran a test for 5 > hours with 300,000 requests (moving window of 9mins) with 10g of heap. > Jetty didn't crash with OOM. So I guess my application is not the source of > OOM.
I disagree. I suspect configuration differences. The only way to know for sure is if you use a profiler and find out where you application is using memory. > I'm currently using tomcat 7.0.50 in production and it is doing well and I > don't want to migrate to jetty just for long polling (implemented using > AsyncResponse). Which connector? > Any suggestions ?? How long does a request take to process? Exactly how many concurrent requests are you trying to support? Mark > > Regards > Anurag > On Aug 22, 2014 2:10 PM, "Mark Thomas" <ma...@apache.org> wrote: > >> On 22/08/2014 06:03, anurag gupta wrote: >>> >>> >>> Hi All, >>> >>> I'm trying to implement long polling using the servlet 3.0 spec. >>> Implementation wise it's done and works fine in tomcat. The problem >> occurs >>> when it is under load, for eg. when we send just 100,000 requests we see >>> weird behaviour like requests timeout before the defined timeout, Tomcat >>> goes OOM because of GC overhead limit exceeding. >> >> The root cause of the OOM is most likely your application rather than >> Tomcat. >> >>> I have tried this on 2 diff versions of tomcat (mentioned in subject). >>> >>> OS CentOS 6.5 >>> Process memory 10g both Xmx and Xms >>> >>> So I have a question, upto how many concurrent open(idle) connections can >>> a tomcat instance handle ? >> >> As many as your operating system will allow. (Hint: It will be less than >> 100k). >> >>> How to achieve maximum idle connections ? >> >> Fix your application so it doesn't trigger an OOME. >> >> Tune your OS. >> >> Mark >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> >> > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
