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> > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > 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 > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1 > Comment: GPGTools - http://gpgtools.org > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBCAAGBQJS5n9ZAAoJEBzwKT+lPKRYXJAQAIoI/6t21bVVHXGH+KZDVOvy > e+YsyWJRdRtFCDCIc+Y3YtY+8q+uDQRyqBQyJLNgdmkNEdbrGf1a/n74Mg4bNilA > GxOi7D75tiMni3T4rz4nUc5nyTnCOBNYuitrpjZMWfvd/ajHdSAEWuivGa87A/oL > C7Y4Bu6KB+2dwNifOwYWPzRq9yl+25G7SBo+URH8HMTHVEBVrDYflTudX0q9D4XI > XK5CNTiOQvfKgu/3HCjcZSq75LspTIC0Kw9P+GRX9PoJJCvAlF3TQgLghJ9S3YOT > l0n3A5UE2cZycUv3NEJrdoerWbYsbDexq47eeQ2CMVoHeTBBFDAZK4uR7EneFsea > 89WI39tNT0+jrScFQ7eKCv72yxUb05gunOnWMHe23vx10BXVT2at8jvgSlJs2SSy > co2B9PrNqwZRZtzZCS38A5DmXts9KlEFnc7bd5Fu4ME4jEs/sODd8+CXc9Fpsmee > 68v2w0avaAKjngvirhMq+X12t+NZSIK5TTsz9XA36AGEnDEAgWZUNQ/6GSG2oA2F > tiQzIKkl/MTl8ZEYbI0ZydQgsdhbdvcQ+51dRsqlk1wj+Rlp9d3rOnUgtHn0w4xO > wUid16DjQyCKiqBw+2ATpf6bK1m/cCKQxbkBmfMUXa4wR9Hok3M0fCwsJrHOt74T > 1k9HFMAfUZSNelfdCvsC > =M2Q+ > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
