Thanks, but it does not help either. I have tried on old Linux 2.6.5 as well -- same slow.
Rickard wrote: > > This might be related to a change in the linux kernel 2.6.15+. > > Without going into details, you could try: > > sudo sysctl -w net.ipv4.tcp_abc=0 > Which turns of the new feature. > > > kaipa wrote: >> >> Hi, >> >> I've read through archives and found that some people experience the same >> problem but there were no solution. Tests work great fast on Windows >> Laptop but unbarely slow on Linux server. >> >> - I have the standard configuration from Latest AMQ release (4.*). The >> only difference that I have tried Kaha persistence that works much faster >> than JDBCJournal. I tried JDBCJournal as well -- perfomance difference is >> the same. >> - I use tcp transport >> - Queue is persistent >> - Session is transactional >> >> First pair of tests commit session after every message. Second pair >> commit after all messages are sent or received. I am especially concerned >> about first pair that is too slow. >> >> Windows: >> >> Testing QService.sendMessage() >> 500 ops 453ms >> Average speed: 1103 ops/s >> >> Testing QService.consumeMessage() >> 500 ops 484ms >> Average speed: 1033 ops/s >> >> Testing QService.sendMessageNoCommit() >> 500 ops 188ms >> Average speed: 2659 ops/s >> >> Testing QService.consumeMessageNoCommit() >> 500 ops 125ms >> Average speed: 4000 ops/s >> >> Linux: >> >> [java] Testing QService.sendMessage() >> [java] 500 ops 22290ms >> [java] Average speed: 22 ops/s >> >> [java] Testing QService.consumeMessage() >> [java] 500 ops 40366ms >> [java] Average speed: 12 ops/s >> >> [java] Testing QService.sendMessageNoCommit() >> [java] 500 ops 926ms >> [java] Average speed: 539 ops/s >> >> [java] Testing QService.consumeMessageNoCommit() >> [java] 500 ops 1017ms >> [java] Average speed: 491 ops/s >> >> I suspect it is something with activemq io libraries. Java web services >> work fine on the same server, the problem is only with activemq. >> >> Please, advise where I can look into >> > > -- View this message in context: http://www.nabble.com/Bad-AMQ-Linux-performance-tf2159490.html#a6016375 Sent from the ActiveMQ - User forum at Nabble.com.
