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тАО03-26-2010 02:53 AM
тАО03-26-2010 02:53 AM
vxfsd and threads
My question is if there's any kind of consensus around vxfsd and it using 231, 246, 247 threads per proces and if this might be normal or not? This may be too abstract a question to ask, but I just wanted to see if some folks could comment based upon any experiences they've had? Additionally if anyone would have any insight as to what might be making vxfsd behave this way with as many threads per process that it's using, I'd be interested in that too.
Thanks in advance,
/KPS
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тАО03-26-2010 06:20 PM
тАО03-26-2010 06:20 PM
Re: vxfsd and threads
have you changed any of the default vxtunefs parameters regarding streams ?
This may increase the number of vxfsd threads.
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тАО03-27-2010 06:18 AM
тАО03-27-2010 06:18 AM
Re: vxfsd and threads
We do have some option specific items on a 3 filesystems in the /etc/vx/tunefstab and they are as follows:
discovered_direct_iosz=512K
In addition to that we have our journaling filesystems (3 filesystems) setup with the following mount options if this might make any difference:
rw,suid,mincache=direct,largefiles,delaylog,datainlog 0 2
Thanks,
KPS
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тАО04-06-2010 11:03 PM
тАО04-06-2010 11:03 PM
Re: vxfsd and threads
We normally pump up max_thread_proc to 512, on all servers just to keep clean of touching limits.
I just checked on some of our servers that have quite a lot of IO, and vxfsd has lots of threads runnig, on some cases between 250-400.
I'll check out the hours I get the peaks, and see whats going on.
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тАО04-07-2010 05:08 AM
тАО04-07-2010 05:08 AM
Re: vxfsd and threads
Many thanks, i think we're all set...
/KPS