Very slow on Solaris/Linux when commiting transactions
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Key: AMQ-1386
URL: https://issues.apache.org/activemq/browse/AMQ-1386
Project: ActiveMQ
Issue Type: Bug
Affects Versions: 4.1.1, 5.2.0
Environment: Solaris 10 on T2000, SUSE Enterprise linux 10 on DELL
AMD64, Debian testing on AMD Turion laptop, SUSE8 on DELL amd
Reporter: robert huitema
Attachments: JmsTestHarnessAMQ.java
All these systems show a very severe slowdown in TPS when each read is
commited. this varies with the system, but is generally 100 times less than
when I commit every 1000 reads. I have investigated and applied the fixes found
so far, including the tcp_nodelay, net.ipv4.tcp_abc, and misc system fixes. The
problem exhibits across localhost and network, and on Seebeyonds stcms
IQManager.
I have attached a test harness which should show the problem.
Summary of speeds:
localhost windows desktop PC: commit 1000: 3900 tps, commit each:1300 tps
DELL AMD64: commit 1000: 8000tps, commit each: 30tps
SunT2000: commit 1000:700tps, commit each; 15tps
linux laptop: commit 1000: 2500 tps, commit each: 200 tps
Hope you can help, we have been at this in depth for a while now :-(
rgds
rob
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