Hi, FWIW, I just documented how to configure the threshold on which the message will be logged http://cwiki.apache.org/confluence/display/ACTIVEMQ/KahaDB#KahaDB-SlowKahaDBaccesslogmessages
Cheers -- Dejan Bosanac - http://twitter.com/dejanb Open Source Integration - http://fusesource.com/ ActiveMQ in Action - http://www.manning.com/snyder/ Blog - http://www.nighttale.net On Tue, Dec 1, 2009 at 5:56 PM, neillott <neilmatthewl...@yahoo.com> wrote: > > Hi, > > I know this question was posted earlier, but can anyone help here? > > http://old.nabble.com/slow-KahaDB-access-td26172918.html#a26216649 > > I'm seeing this in my activemq log: > > 2009-12-01 09:29:08,690 | INFO | Slow KahaDB access: cleanup took 9789 | > org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal > Checkpoint Worker > 2009-12-01 09:30:36,376 | INFO | Slow KahaDB access: cleanup took 1298 | > org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal > Checkpoint Worker > 2009-12-01 09:47:18,871 | INFO | Slow KahaDB access: cleanup took 14058 | > org.apache.activemq.store.kahadb.MessageDatabase | ActiveMQ Journal > Checkpoint Worker > > When I benchmark the box I'm seeing this: > > [myserver] /usr/local/neil/activemq > java -classpath lib/kahadb-5.3.0.jar > org.apache.kahadb.util.DiskBenchmark > Benchmarking: /usr/local/neil/activemq/disk-benchmark.dat > Writes: > 128000 writes of size 4096 written in 18.521 seconds. > 6911.0737 writes/second. > 26.996382 megs/second. > > Sync Writes: > 57936 writes of size 4096 written in 10.001 seconds. > 5793.0205 writes/second. > 22.628986 megs/second. > > Reads: > 1960651 reads of size 4096 read in 10.001 seconds. > 196045.5 writes/second. > 765.80273 megs/second. > > > What exactly do I need to do to get rid of the slow kahadb access messages? > > Thanks, > > Neil > -- > View this message in context: > http://old.nabble.com/Slow-KahaDB-access-tp26594249p26594249.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > >
