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max memory size on input queue?

DISCUSSION Tom Georgoulias 3 participants 3 messages Jun 4, 2003

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Is there any agreement on what is the safest, largest input queue memory size? /etc/syconfig/nfs has an option to turn this value to 256k, so it that generally the best setting to use? What about 512k?

Tom

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#1 lore raw
Quoted 5 lines · Tom Georgoulias

Is there any agreement on what is the safest, largest input queue memory size? /etc/syconfig/nfs has an option to turn this value to 256k, so it that generally the best setting to use? What about 512k?

Tom

I am not an expert on input queues, but from my experience, the 256K recommendation is based on 8 threads.. the goal is to give 32K to each thread, so if you have 16 threads, you would want 512K. I do not know if there is a good way to find out if more on top of 32K would be good.. 32K/thread (my servers run 64threads) works well for me so far with 1 Gigabit and two 100Mbit interfaces on each server.

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Matt Schillinger
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#2 lore raw
In reply to Tom Georgoulias
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" " == Tom Georgoulias <[email protected]> writes:

> Is there any agreement on what is the safest, largest input > queue memory size? /etc/syconfig/nfs has an option to turn > this value to 256k, so it that generally the best setting to > use? What about 512k?

See the discussion in the NFS-HOWTO.

Cheers,
Trond

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