Hi, I think I figured out what is going on. I think that the parameters were working all right, but the memory that is shown by the "free" command isn't corresponding to the JVM memory.
I put together a small JSP that uses Runtime.getRuntime().totalMemory() and .freeMemory() and and when I access that page, that shows the JVM memory is as I configured with the Xmx/Xms. Thanks, Jim On Tue, Mar 31, 2020 at 10:03 PM o haya <ohaya1...@gmail.com> wrote: > Hi, > > BTW, in the catalina.out log file, I do see these lines: > > 01-Apr-2020 01:53:17.775 INFO [main] > org.apache.catalina.startup.VersionLoggerListener.log Command line > argument: -Dfile.encoding=UTF-8 > 01-Apr-2020 01:53:17.775 INFO [main] > org.apache.catalina.startup.VersionLoggerListener.log Command line > argument: -Xms4096m > 01-Apr-2020 01:53:17.775 INFO [main] > org.apache.catalina.startup.VersionLoggerListener.log Command line > argument: -Xmx4096m > 01-Apr-2020 01:53:17.775 INFO [main] > org.apache.catalina.startup.VersionLoggerListener.log Command line > argument: -XX:NewSize=256m > 01-Apr-2020 01:53:17.775 INFO [main] > org.apache.catalina.startup.VersionLoggerListener.log Command line > argument: -XX:MaxNewSize=256m > > So from that logging, it seems like Tomcat IS seeing those parameters, so > why does it not seem to be using the larger amounts of memory? > > Thanks, > Jim > > > On Tue, Mar 31, 2020 at 9:44 PM o haya <ohaya1...@gmail.com> wrote: > >> Hi, >> >> I have Tomcat installed in /apps/apache-tomcat-9.0.20/ >> >> In the /apps/apache-tomcat-9.0.20/bin/setenv.sh, I have: >> >> #!/bin/bash >> >> JAVA_HOME=/apps/jdk1.8.0_221 >> >> CATALINA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server \ >> -Xms4096m -Xmx4096m -XX:NewSize=256m -XX:MaxNewSize=256m >> -XX:+DisableExplicitGC \ >> -Djava.security.egd=file:/dev/./urandom" >> >> >> Then to start Tomcat, I: >> >> cd /apps/apache-tomcat-9.0.20/ >> >> bin/startup.sh >> >> >> >> Here's an example of running: >> >> [root@ip-192-168-218-224 apache-tomcat-9.0.20]# free >> total used free shared buff/cache >> available >> Mem: 32780604 913012 27429012 16716 4438580 >> 31441736 >> Swap: 0 0 0 >> [root@ip-192-168-218-224 apache-tomcat-9.0.20]# cd >> /apps/apache-tomcat-9.0.20/ >> [root@ip-192-168-218-224 apache-tomcat-9.0.20]# >> [root@ip-192-168-218-224 apache-tomcat-9.0.20]# bin/startup.sh >> Using CATALINA_BASE: /apps/apache-tomcat-9.0.20 >> Using CATALINA_HOME: /apps/apache-tomcat-9.0.20 >> Using CATALINA_TMPDIR: /apps/apache-tomcat-9.0.20/temp >> Using JRE_HOME: /apps/jdk1.8.0_221 >> Using CLASSPATH: >> /apps/apache-tomcat-9.0.20/bin/bootstrap.jar:/apps/apache-tomcat-9.0.20/bin/tomcat-juli.jar >> Tomcat started. >> [root@ip-192-168-218-224 apache-tomcat-9.0.20]# free >> total used free shared buff/cache >> available >> Mem: 32780604 1343288 26998784 16716 4438532 >> 31011556 >> >> >> >> You are right that it appears like it is not using the CATALINA_OPTS to >> set the memory, but I don't know why ??? >> >> >> Thanks, >> Jim >> >> >> >> >> >> On Tue, Mar 31, 2020 at 12:52 PM Mark Thomas <ma...@apache.org> wrote: >> >>> On 31/03/2020 17:42, o haya wrote: >>> > Thanks for the infos. >>> > >>> > I was thinking the same thing you were thinking, that it might be >>> 32-bit >>> > JVM, but when I run "java -version" I am getting: >>> > >>> > java -version >>> > java version "1.8.0_221" >>> > Java(TM) SE Runtime Environment (build 1.8.0_221-b11) >>> > Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode) >>> > >>> > Isn't that confirming that this is a 64-bit JVM? >>> > >>> > ALSO FYI, I did test where I also added "-d64" parameter to the >>> > CATALINA_OPTS, and same thing happened. >>> >>> Exactly how are you setting those? It looks like the changes you are >>> making aren't having any effect. If you specified a 4Gb min heap on a >>> 32-bit JVM I'd expect Java to either refuse to start or crash on start. >>> >>> Mark >>> >>> >>> > >>> > Jim >>> > >>> > On Tue, Mar 31, 2020 at 11:10 AM Olaf Kock <tom...@olafkock.de> wrote: >>> > >>> >> >>> >> On 31.03.20 17:02, o haya wrote: >>> >>> Hi, >>> >>> >>> >>> I am running Tomcat 9.02 under RHEL 7 (under Oracle JDK 1.8), and I >>> would >>> >>> like to increase the memory that is available to Tomcat when it is >>> >> running. >>> >>> >>> >>> I have tried sourcing the following: >>> >>> >>> >>> JAVA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 -server \ >>> >>> -Xms4096m -Xmx4096m -XX:NewSize=256m -XX:MaxNewSize=256m >>> >>> -XX:+DisableExplicitGC \ >>> >>> -Djava.security.egd=file:/dev/./urandom -d64" >>> >> >>> >> You want to use CATALINA_OPTS for memory settings, not JAVA_OPTS. >>> >> >>> >> JAVA_OPTS are used for every JVM start, including when you run >>> >> shutdown.sh - that one needs only a minimal amount of memory for short >>> >> time. >>> >> >>> >>> and also: >>> >>> >>> >>> CATALINA_OPTS="-Djava.awt.headless=true -Dfile.encoding=UTF-8 >>> -server \ >>> >>> -Xms4096m -Xmx4096m -XX:NewSize=256m -XX:MaxNewSize=256m >>> >>> -XX:+DisableExplicitGC \ >>> >>> -Djava.security.egd=file:/dev/./urandom" >>> >> >>> >> your CATALINA_OPTS will be combined with the JAVA_OPTS, so that you >>> >> configure the memory twice. >>> >> >>> >> But -Xms and -Xmx are the way to configure the memory. >>> >> >>> >>> but even with those, when I check memory using "free", it is only >>> using >>> >>> about 1.5GB. >>> >>> >>> >>> Can someone tell me how I can accomplish this? >>> >> >>> >> Sounds suspiciously like you're running on 32bit, either the OS or >>> JVM. >>> >> Upgrade to 64bit to have access to more memory. >>> >> >>> >> >>> >> >>> >> >>> >> --------------------------------------------------------------------- >>> >> 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 >>> >>>
