[Pvfs2-developers] threaded client-core and the device thread

Murali Vilayannur murali.vilayannur at gmail.com
Fri Oct 13 23:25:58 EDT 2006


Hi Sam,
> Well it doesn't seem to make a difference, at least with the workloads 
> that we were trying.
I see.. it might still be a good idea to check those changes in, no?
> Dean was seeing memset at the top of list while running oprofile on 
> pvfs2-client-core.  malloc and free were also up there.
Doesn't oprofile only show functions utilizing cpu and not I/O stalls or 
any other system induced stalls?
It may very well be that a whole bunch of these optimizations could make 
a difference.
> If I understand it correctly, there are a number of threads doing 
> simultaneous reads or writes (64K block sizes) on the same file.
knfsd threads? or regular user-space programs to demonstrate the same?
thanks,
Murali


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