Menu
▾
▴
Re: [Wrapper-user] Jar works with console, throws exceptions when launched via start?
|
From: Stas O. <sta...@gm...> - 2008-10-05 19:04:15
|
Hi Lee. You mean that the wrapper actually gets a higher priority then the JVM it launches? Regards. 2008/10/5 Leif Mortenson <le...@ta...> > Stas, > I was able to to check the default priorities using the following command: > ps -eo pid,tid,class,rtprio,ni,pri,psr,pcpu,stat,wchan:14,comm > > On Ubuntu, the Wrapper is defaulting to a nice level of 0 and a > real-time priority of 24, but the JVM is set to a nice level of 0 and > a real-time priority of 19. > According to the nice manual however, the range of possible values is > -20 (most favorable) to 19 (least favorable) > > If I set the PRIORITY in the script to 5 then the nice levels both get > set to 5, but the real-time priorities are 19 and 15 respectively. > This is actually lower priority. > Setting priorities to a value higher than 0 requires root privilege. > > If do so and set it to -5, then the nice levels are both -5, and the > real-time priorities are 29 and 26 respectively. > > So quick answer, the default is 0. I need to look into the real-time > priority more on my end. you are probable seeing the lower priority > do to this difference in real-time priorities between the top level > wrapper process and its child java process. I had not noticed this > before. > > Cheers, > Leif > > On Wed, Oct 1, 2008 at 11:30 PM, Stas Oskin <sta...@gm...> wrote: > > Hi Leif. > > > > Thanks, I see. > > > > Do you have any idea how to find current priority level (so I could > increase > > 1 by 1). > > > > Regards. > > > > 2008/10/1 Leif Mortenson <le...@ta...> > >> > >> Stas, > >> On linux, open your wrapper shell script in an editor and modify the > >> PRIORITY value found in the settings section towards the top. These > >> are standard nice levels, so look at "man nice" for details. > >> > >> Cheers, > >> Leif > >> > >> On Wed, Oct 1, 2008 at 9:44 PM, Stas Oskin <sta...@gm...> > wrote: > >> > Hi Leif. > >> > > >> > 2008/10/1 Leif Mortenson <le...@ta...> > >> >> > >> >> Stas, > >> >> That's great news. The memory leaks were in the Java code? What > are > >> >> you maximum memory settings set to? Are they low enough that the > >> >> entire JVM will fit in memory without any swapping along side the OS > >> >> and other apps being used? Java performs very poorly when its memory > >> >> is being swapped out. (Not a Wrapper issue) > >> > > >> > The leaks were in JNI code and quickly took the whole memory. This > >> > caused > >> > Java to swap. > >> > > >> >> > >> >> About the CPU, I reread this thread but I don't think you ever told > me > >> >> what platform you are running on. That will make a big difference. > >> >> Under UNIX, there is a setting in the shell script which allows you > to > >> >> specify a "nice" level to control the priority. > >> > > >> > We use Linux - CentOS distro. What setting we should look to? > >> > > >> >> > >> >> On Windows, it is done using the > >> >> wrapper.ntservice.process_priority=NORMAL property. Please be sure > to > >> >> read the warnings in the documentation. > >> >> > >> >> > >> >> > http://wrapper.tanukisoftware.org/doc/english/prop-ntservice-process-priority.html > >> >> > >> >> Normally on most platforms, the OS gives priority to the Windowing > >> >> system and those processes to make them more responsive. That is why > >> >> on UNIX, it is good to run servers in a headless environment. > >> > > >> > Hmm, we running the server without any X installed, strictly via > console > >> > - > >> > is this what you call headless? > >> > > >> > Actually, this is the main app the server was targeted to, so we > indeed > >> > prefer to give it all the priority we can (without hanging the OS of > >> > course). > >> > > >> > Regards. > >> > > >> > > >> > > ------------------------------------------------------------------------- > >> > This SF.Net email is sponsored by the Moblin Your Move Developer's > >> > challenge > >> > Build the coolest Linux based applications with Moblin SDK & win great > >> > prizes > >> > Grand prize is a trip for two to an Open Source event anywhere in the > >> > world > >> > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > >> > _______________________________________________ > >> > Wrapper-user mailing list > >> > Wra...@li... > >> > https://lists.sourceforge.net/lists/listinfo/wrapper-user > >> > > >> > > >> > >> > ------------------------------------------------------------------------- > >> This SF.Net email is sponsored by the Moblin Your Move Developer's > >> challenge > >> Build the coolest Linux based applications with Moblin SDK & win great > >> prizes > >> Grand prize is a trip for two to an Open Source event anywhere in the > >> world > >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ > >> _______________________________________________ > >> Wrapper-user mailing list > >> Wra...@li... > >> https://lists.sourceforge.net/lists/listinfo/wrapper-user > > > > ------------------------------------------------------------------------- > > This SF.Net email is sponsored by the Moblin Your Move Developer's > challenge > > Build the coolest Linux based applications with Moblin SDK & win great > > prizes > > Grand prize is a trip for two to an Open Source event anywhere in the > world > > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > _______________________________________________ > > Wrapper-user mailing list > > Wra...@li... > > https://lists.sourceforge.net/lists/listinfo/wrapper-user > > > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's > challenge > Build the coolest Linux based applications with Moblin SDK & win great > prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Wrapper-user mailing list > Wra...@li... > https://lists.sourceforge.net/lists/listinfo/wrapper-user > |
