On 2015/03/11, 9:03 PM, "teng wang" 
<tzw0...@gmail.com<mailto:tzw0...@gmail.com>> wrote:

Dear All,

What's the initial number of service threads on OSS? How does it
vary according to the workload? Is there any document for this?

This can be tuned by the module parameter "oss_num_threads" for the ost module, 
or via:

    lctl ost.OSS.{service}.threads_{min,max}=N

where {service} is one of ost, ost_io, ost_create, and "N" is the min or max 
number of threads.

Cheers, Andreas
--
Andreas Dilger
Lustre Software Architect
Intel High Performance Data Division

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