-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Арсений,
On 1/27/14, 10:58 AM, Арсений Зинченко wrote: > Thanks, Christopher. > > OK, what about next: > > Set JAVA_OPTS as system variable (for all other applications); and > create setenv.bat in /bin/ directory with CATALINA_OPTS whith > Xmx/Xms for Tomcat? > > Will it be more correctly than set CATALINA_OPTS as System > variable? Or - by the way, in setevn.bat must be used JAVA_OPTS > too? <https://plus.google.com/u/0/113253806461878935497?prsrc=4> > > > 2014/1/27 Christopher Schultz <ch...@christopherschultz.net> > > Арсений, > > On 1/27/14, 9:21 AM, Арсений Зинченко wrote: >>>> We have a little dispute with my colleague about using this >>>> variables. >>>> >>>> So: have Windows-box machine. On it - runing few different >>>> Java-application, including Tomcat. >>>> >>>> Needs to set memory for Tomcat other, than for all other >>>> Java-applications. >>>> >>>> My proposal is set to System variables: >>>> >>>> JAVA_OPTS "-Xmx1024M -Xms512M -XX:MaxPermSize512M" >>>> CATALINA_OPTS "-Xmx4096M -Xms2048M -XX:MaxPermSize=1024M" >>>> >>>> But, as he asserts - this is not correct way: >>>> >>>> >>>> - CATALINA_OPTS must NOT contain memory limits like "Xmx", >>>> "Xms" etc; - Java Garbage collector will work differently >>>> because JAVA_OPTS have another opts for memory then >>>> CATALINA_OPTS, so - this will worse Tomcat performance; - and >>>> so on > > Tomcat runs Java roughly in this way: > > $JAVA_HOME/bin/java $JAVA_OPTS $CATALINA_OPTS \ > org.apache.catalina.startup.Bootstrap > > If you have these options configured using both environment > variables, then CATALINA_OPTS (the later one) will win because > that's how the JVM parses arguments: the last one on the > command-line wins. So, it's perfectly safe to do what you have > described above. > > On the other hand, note that since JAVA_OPTS specifies 0.5GiB of > heap space for when you are /not/ launching Tomcat, then running > "bin\shutdown.bat" will pre-allocate 0.5GiB of heap space just to > send the "shutdown" command to a running Tomcat instance, and then > terminate. It's kind of a waste. > > I totally agree with Dan's comments about how using "system > variables": just use bin/setenv.bat and keep everything locally. > >>>> His suggestion is to set JAVA_OPTS with memory limits exactly >>>> to Tomcat startup script (not as system variable at all). > > +1 > >>>> So, my question is: is it correct to set memory limits for >>>> Tomcat via CATALINA_OPTS variable? If in system also present >>>> JAVA_OPTS - will it have influence on to Tomcat's >>>> perfarmance? > > See above. > > -chris I would always recommend that you use bin/setenv.sh (or bin\setenv.bat) because you can then set the value differently for each Tomcat instance that you have. This becomes an issue if you have many different Tomcat instances, which I tend to do. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJS5oLSAAoJEBzwKT+lPKRY8BMP/06E75p4L2fx75ekKgyVFuVX vM/tBcP3ulHlEVHAzcTl+gNui4Px0hjRRdKBxU9in/gSRSsD2xkJJa5eXF0EvSn1 e9BNiVY78JZITSu1wBar0YmIf11EJEtGhhtj/fSkJUxIMhp9YYpM1s9CrxckkIef WFQZOnLVdWUq2xxkPiY8AbK7h5zDgo+riBd4HcSC6ymPT0oYCldGIZki7nZ8lxMb G3i52aTCiuaOlKYBhdKBsfDdkFJvqF+zZEXdsw+FKP+mKZvpEt5Fn1cWSTX7FXxS mWApl7J8FZW+zwX734qUw3ThLIbY2RCwT78VPkPcHK9rbWcKbI4UQ1WIGZeL5U+K IqX1MOIJ+dVCJ7rgvtjYWYlfDoovYqfJ6vCoPU5I3Xh0CMzGaKMZY/QZ+gFUXtdu 0ym/DQJB13cgjWbOi4YFeL8jNRjgui2UkdtThOzfSzL4eY3C+L5Ca0bb/ExReWTb X05q1RVeTB6rTScTYiPCNMKfZ7S2JnXcoXgEeHpKoGo8EPClKLGlLRmFplk/U4Do ZdCLLjCavrkEVg6pUEf7UZDJ/qH/VDC0nyNnqJJQHRhjUBh/bMR1yjrzNOnkLOeV x0BMEHK8ND76EZ0L5+bwZlAQxvCqjQ/vH1IBmrUsjS60rgMyocJB//UDIZOEOAiq 9MXTB+fLRv2ziADmiWJ1 =QPaR -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
