Which jvm and version are you using? -ryan
On Tue, Feb 8, 2011 at 7:32 AM, Victor Kabdebon <victor.kabde...@gmail.com> wrote: > It is really weird that I am the only one to have this issue. > I restarted Cassandra today and already the memory compution is over the > limit : > > root 1739 4.0 24.5 664968 494996 pts/4 SLl 15:51 0:12 > /usr/bin/java -ea -Xms128M -Xmx256M -XX:+UseParNewGC -XX:+UseConcMarkSweepGC > -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1 > -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly > -XX:+HeapDumpOnOutOfMemoryError -Dcom.sun.management.jmxremote.port=8081 > -Dcom.sun.management.jmxremote.ssl=false > -Dcom.sun.management.jmxremote.authenticate=false > -Dstorage-config=bin/../conf -cp > bin/../conf:bin/../build/classes:bin/../lib/antlr-3.1.3.jar:bin/../lib/apache-cassandra-0.6.6.jar:bin/../lib/avro-1.2.0-dev.jar:bin/../lib/cassandra-javautils.jar:bin/../lib/clhm-production.jar:bin/../lib/commons-cli-1.1.jar:bin/../lib/commons-codec-1.2.jar:bin/../lib/commons-collections-3.2.1.jar:bin/../lib/commons-io-1.4.jar:bin/../lib/commons-lang-2.4.jar:bin/../lib/commons-pool-1.5.4.jar:bin/../lib/google-collections-1.0.jar:bin/../lib/hadoop-core-0.20.1.jar:bin/../lib/hector-0.6.0-14.jar:bin/../lib/high-scale-lib.jar:bin/../lib/ivy-2.1.0.jar:bin/../lib/jackson-core-asl-1.4.0.jar:bin/../lib/jackson-mapper-asl-1.4.0.jar:bin/../lib/jline-0.9.94.jar:bin/../lib/jna.jar:bin/../lib/json-simple-1.1.jar:bin/../lib/libthrift-r917130.jar:bin/../lib/log4j-1.2.14.jar:bin/../lib/perf4j-0.9.12.jar:bin/../lib/slf4j-api-1.5.8.jar:bin/../lib/slf4j-log4j12-1.5.8.jar:bin/../lib/uuid-3.1.jar > org.apache.cassandra.thrift.CassandraDaemon > > It is really an annoying problem if we cannot really foresee memory > consumption. > > Best regards, > Victor K > > 2011/2/8 Victor Kabdebon <victor.kabde...@gmail.com> >> >> Dear all, >> >> Sorry to come back again to this point but I am really worried about >> Cassandra memory consumption. I have a single machine that runs one >> Cassandra server. There is almost no data on it but I see a crazy memory >> consumption and it doesn't care at all about the instructions... >> Note that I am not using mmap, but "Standard", I use also JNA (inside lib >> folder), i am running on debian 5 64 bits, so a pretty normal configuration. >> I also use Cassandra 0.6.8. >> >> >> Here are the informations I gathered on Cassandra : >> >> 105 16765 0.1 34.1 1089424 687476 ? Sl Feb02 14:58 >> /usr/bin/java -ea -Xms128M -Xmx256M -XX:+UseParNewGC -XX:+UseConcMarkSweepGC >> -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=1 >> -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly >> -XX:+HeapDumpOnOutOfMemoryError -Dcom.sun.management.jmxremote.port=8081 >> -Dcom.sun.management.jmxremote.ssl=false >> -Dcom.sun.management.jmxremote.authenticate=false >> -Dstorage-config=bin/../conf -Dcassandra-foreground=yes -cp >> bin/../conf:bin/../build/classes:bin/../lib/antlr-3.1.3.jar:bin/../lib/apache-cassandra-0.6.6.jar:bin/../lib/avro-1.2.0-dev.jar:bin/../lib/cassandra-javautils.jar:bin/../lib/clhm-production.jar:bin/../lib/commons-cli-1.1.jar:bin/../lib/commons-codec-1.2.jar:bin/../lib/commons-collections-3.2.1.jar:bin/../lib/commons-io-1.4.jar:bin/../lib/commons-lang-2.4.jar:bin/../lib/commons-pool-1.5.4.jar:bin/../lib/google-collections-1.0.jar:bin/../lib/hadoop-core-0.20.1.jar:bin/../lib/hector-0.6.0-14.jar:bin/../lib/high-scale-lib.jar:bin/../lib/ivy-2.1.0.jar:bin/../lib/jackson-core-asl-1.4.0.jar:bin/../lib/jackson-mapper-asl-1.4.0.jar:bin/../lib/jline-0.9.94.jar:bin/../lib/jna.jar:bin/../lib/json-simple-1.1.jar:bin/../lib/libthrift-r917130.jar:bin/../lib/log4j-1.2.14.jar:bin/../lib/perf4j-0.9.12.jar:bin/../lib/slf4j-api-1.5.8.jar:bin/../lib/slf4j-log4j12-1.5.8.jar:bin/../lib/uuid-3.1.jar >> org.apache.cassandra.thrift.CassandraDaemon >> >> result of nodetool info : >> >> 116024732779488843382476400091948985708 >> Load : 1,94 MB >> Generation No : 1296673772 >> Uptime (seconds) : 467550 >> Heap Memory (MB) : 120,26 / 253,94 >> >> >> I have about 21 column families, none of them have a lot of information ( >> as you see I have 2 Mb of text which is really small). Even if I set Xmx at >> 256 there is 687M of memory used. Where does this memory come from ? Bad >> garbage collection ? Something that I ignore ? >> Thank you for your help I really need to get rid of that problem. >> >> Best regards, >> Victor Kabdebon > > -- @rk
