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
