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Discussion Forums » English Forums » Performance Forum » Re: Multithreaded performance

Multithreaded performance

Last post 07-31-2008, 02:08 PM by ErikNRC. 2 replies.


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07-29-2008, 06:36 PM 50382

ErikNRC
Joined on 02-05-2007
Ottawa, Canada
Posts 64

Multithreaded performance

Attachment: lemanscircuit.zip

I wrote a new circuit to test multithreaded performance and the bad news is that out of the box db4o-7.2.39.10644 performs much better that the one in the workspace. What changed between these two versions?

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07-31-2008, 12:38 AM 50403 in reply to 50382

Andrei.hu
Joined on 11-21-2005
Posts 43

Re: Multithreaded performance

As far as I have seen in the logs, some additional synchronisation were introduced some days ago. Maybe that causes some overhead.

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07-31-2008, 02:08 PM 50423 in reply to 50403

ErikNRC
Joined on 02-05-2007
Ottawa, Canada
Posts 64

Re: Multithreaded performance

Andrei.hu:
As far as I have seen in the logs, some additional synchronisation were introduced some days ago. Maybe that causes some overhead.

This was a silly one, I did not realize that it was necessary to build the jar to run the benchmark. I was only running the benchmark in eclipse and it had probably the example db4o jar.

Erik.

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