It could only happen for example that some other functionality throws this error. For example if a file is loaded (accidently) completely in the cache. That looks like a "performance" issue then but is a bug in the implementation then cause it will throw the same "heap space issue".
It would be good if you post the complete jvm.stdout log to see the context of the Heap space error better. Thanks! Sebastian 2013/2/13 [email protected] <[email protected]> > Thanks for the feedback, > > could you start to boot the server with -Xms1024M -Xmx1024M ? > Cause I doubt that the Heap space error will happen with 17 or 20 (or 100 > users) when 1GB of Ram is really available. > > Sebastian > > > 2013/2/13 Irina Arkhipets <[email protected]> > >> Hi Sebastian,**** >> >> ** ** >> >> Just two additional comments from my side:**** >> >> ** ** >> >> **1. **"-Xms512M -Xmx1024M” java keys were used for OM starting**** >> >> **2. **All the 19 users in the room had their video windows opened* >> *** >> >> ** ** >> >> Previously, when we run OM without “-Xmx” option specified, it died on >> the 14th user in the room approximately under the similar conditions.**** >> >> ** ** >> >> Regards,**** >> >> Irina.**** >> >> ** ** >> >> *From:* [email protected] [mailto:[email protected]] >> *Sent:* Wednesday, February 13, 2013 5:38 AM >> *To:* dev >> *Subject:* Re: OM stress testing**** >> >> ** ** >> >> What script did you use to startup the server?**** >> >> You should use the red5-highperf.sh and have a look at the values for Xmx >> (max memory) and Xms (min memory).**** >> >> Please include those runtime informations / configurations from your >> start script in the stress test report.**** >> >> I tried to summarize some links and documentation about performance >> tuning once: >> http://openmeetings.apache.org/JVMPerformanceTuning.html**** >> >> Se for example the link to the JVM settings: >> >> http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html#PerformanceTuning >> **** >> >> But Xmx and Xms is really the most important thing. There is also some >> param regard Heap and Thread, that are quite important for performance.** >> ** >> >> ** ** >> >> I think by default the JVM will aquire 60 MB. >> >> Sebastian**** >> >> ** ** >> >> 2013/2/13 Stephen Cottham <[email protected]>**** >> >> At a guess I'd say you need more then 2 gig of RAM based on the exception >> from the java heap space. >> >> Sent from my iPad**** >> >> >> On 12 Feb 2013, at 22:25, "Joseph Karwat" <[email protected]> wrote:*** >> * >> >> Vasiliy:**** >> >> **** >> >> Terrific information and test. I look forward to seeing more of your >> results. It would be helpful to understand what caused the error. Would a >> more powerful computer handle the load or is there a physical limit of 20 >> regardless of environment. Let me know how I can help.**** >> >> **** >> >> Joseph **** >> >> **** >> >> Joseph Karwat | CEO | 415-462-0263 | JellVideo<http://www.jellvideo.com/>| >> www.jellnet.com | *Error! Filename not specified.* **** >> >> *Jell Networks, Inc**. ***** >> >> Enterprise Video Collaboration Solutions**** >> >> **** >> >> Click Here to Register for your JellVideo Collaboration >> Account<http://www.jellvideo.com/> >> **** >> >> **** >> >> **** >> >> *Stephen Cottham >> *Group IT Manager (Associate) >> >> Robert Bird Group >> Level 5, 333 Ann St >> Brisbane, Queensland, 4000, Australia**** >> >> *Phone: +6173 319 2777 <%2B6173%20319%202777> (AUS)***** >> >> *Phone: +44207 633 2880 <%2B44207%C2%A0633%202880> (UK)***** >> >> *Fax: +6173 319 2799 <%2B6173%20319%202799>***** >> >> **** >> >> *Mobile: +61400 756 963 <%2B61400%20756%20963> (AUS)***** >> >> *Mobile: +447900 918 616 <%2B447900%20918%20616> (UK)***** >> >> *Web: **www.robertbird.com* <http://www.robertbird.com/>**** >> >> *Error! Filename not specified.* <http://www.robertbird.com.au/> >> >> >> This email and any attachments are confidential and may contain legally >> privileged information or copyright material. Unless expressly stated, >> confidentiality and/or legal privilege is not intended to be waived by the >> sending of this email. The contents of this email, including any >> attachments, are intended solely for the use of the individual or entity to >> whom they are addressed. If you are not an intended recipient, please >> contact us immediately by return email and then delete both messages. You >> may not otherwise read, forward, copy, use or disclose this email or any >> attachments. Any views expressed in this email are those of the individual >> sender except where the sender expressly, and with authority, states >> otherwise. It is your responsibility to check any attachments for viruses >> or defects before opening or sending them on. None of the sender or its >> related entities accepts any liability for any consequential damage >> resulting from this email containing computer viruses. **** >> >> **** >> >> >> Disclaimer added by *CodeTwo Exchange Rules* >> www.codetwo.com**** >> >> ** ** >> >> *From:* Vasya [mailto:[email protected]] >> *Sent:* Tuesday, February 12, 2013 12:49 AM >> *To:* [email protected] >> *Subject:* OM stress testing**** >> >> **** >> >> Hello all!**** >> >> Today we have started stress testing of Openmeetings to detect >> reliability and collect statistics.**** >> >> We plan to run stress tests weekly (on Tuesdays) and send reports to >> [email protected] .**** >> >> Tested server configuration is: **** >> >> OS: Ubuntu 10.04.3 LTS**** >> >> • RAM 2 GB **** >> >> • CPU Intel(R) Celeron (R) E3300 @ 2.50GHz**** >> >> Tested scenario is:**** >> >> • Start OM conference **** >> >> • Start recording**** >> >> • Start screen sharing**** >> >> • Connect to conference while server is not crashed.**** >> >> **** >> >> Today results meet our expectations, please see a report below.**** >> >> Maximum number of the users in the system – 20**** >> >> Maximum number of the users in one room of the type “Conference” with the >> screen sharing and recordings turned on – 19. **** >> >> All the users were logged from two Windows workstations.**** >> >> Result: After 19 connections server is down.**** >> >> Error message in log file is: "2013-02-12 08:02:07,844 [NioProcessor-7] >> WARN o.r.s.net.rtmp.RTMPMinaIoHandler - Exception caught Java heap space" >> **** >> >> Log file is attached.**** >> >> >> Thanks,**** >> >> Vasiliy**** >> >> **** >> >> >> >> >> -- >> Sebastian Wagner >> https://twitter.com/#!/dead_lock >> http://www.webbase-design.de >> http://www.wagner-sebastian.com >> [email protected] **** >> > > > > -- > Sebastian Wagner > https://twitter.com/#!/dead_lock > http://www.webbase-design.de > http://www.wagner-sebastian.com > [email protected] > -- Sebastian Wagner https://twitter.com/#!/dead_lock http://www.webbase-design.de http://www.wagner-sebastian.com [email protected]
