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Post Info TOPIC: Performances degrading after few searches


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Performances degrading after few searches
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Hello 

 

Sorry I have a strange problem, 

I have a logscape installation on a Win2K8 R2 64 with 12GB ram and 2xQuad

I'm using the default  boot.properities and I have a set of data in plain text files (about 30 files for a total of 8Gb and 120 Million records)

After configuring the datasource and waiting a while for the indexing the first searches (just a simple include(text string) ) are quite fast and logscape goes trough the 120 million records in about 90 seconds

If i repeat the same search few times, say 10 times, it becomes progressively slower till does not complete the search anymore and just hangs in there

 

Is there something I can check/modify  to avoid this?

Are there any logs that I can use to debug the issue?

 

Sorry for the many questions!

 

Thanks and best regards

Mark

 



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Senior Member

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Posts: 100
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Hi Mark,
Things will run slow when the memory indexes are exhausted and spending most of their pushing data out.

About half way through the boot.properties is a quick sizing guide for 16 and 32 GB configurations. You could try and do something like the following (change the existing flags):

12GB)
vmargs = -Xms6G -Xmx6G -XX:MaxPermSize=512M -XX:MaxDirectMemorySize=512M
sysprops = -Ddashboard.heap=364M -Dlogspace.heap=384M -Daggspace.heap=384M


More info can be found here:
logscape.github.io/technology-sizing.html


> original
# 1) - 16GB)
# vmargs = -Xms8G -Xmx8G -XX:MaxPermSize=512M -XX:MaxDirectMemorySize=512M
# sysprops = -Ddashboard.heap=512M -Dlogspace.heap=512M -Daggspace.heap=512M
>

Cheers,
Na.


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