[389-users] Performance differences between 1.1.2 and 1.2.6/1.2.7

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To: "General discussion list for the 389 Directory server project." <389-users@xxxxxxxxxxxxxxxxxxxxxxx>
Subject: [389-users] Performance differences between 1.1.2 and 1.2.6/1.2.7
From: Reinhard Nappert <rnappert@xxxxxxxxxxx>
Date: Thu, 10 Feb 2011 11:32:01 -0500
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Thread-topic: Performance differences between 1.1.2 and 1.2.6/1.2.7

Hi,

I noticed that the search performance increased quite a bit with 1.2.6/1.2.7.5, compared to 1.1.2.

I did a rather simple test, where I randomly searched objects from a small database with about 25.000 objects. I assume that those objects are cached.

The tests were performed on a 2 Dual CPU (1.8 GH clock speed) box with 16 GB RAM.

I did perform 7.000.000 searches with 7 threads (1.000.000 searches per thread). Both directory instances were configured in exactly the same way.

I got 5630 searches/sec for the 1.2.7.5 directory instance, whereas

I got 6890 searches/sec for the 1.1.2 directory instance.

I was wondering what the reason for the performance decrease is.

Thanks,

-Reinhard

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