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тАО03-03-2010 05:15 PM
тАО03-03-2010 05:15 PM
Concurrent access at nfs version 3
Our nfs server running on 11.11 system which share a filesystem to hundreds of clients.in most time it works well but sometimes it very slow to all our client to access nfsserver in busy time.my question is if there a parameter like NFSD_MAX_CONNECTION in nfs version4 which define the concurrent access for nfs version 3?
thanks alots:)
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тАО03-03-2010 05:52 PM
тАО03-03-2010 05:52 PM
Re: Concurrent access at nfs version 3
http://compute.cnr.berkeley.edu/cgi-bin/man-cgi?nfs+4
*******************
NFSD_MAX_CONNECTIONS=num
Sets the maximum number of concurrent, connection- oriented connections. The default is unlimited and is obtained by not setting (that is, commenting out) NFSD_MAX_CONNECTIONS.Equivalent to the -c option in nfsd.
*******************
If there is a lot of netowrk traffic, can you please check if resource utilization.
BR,
Kapil+
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тАО03-03-2010 06:02 PM
тАО03-03-2010 06:02 PM
Re: Concurrent access at nfs version 3
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тАО03-03-2010 07:03 PM
тАО03-03-2010 07:03 PM
Re: Concurrent access at nfs version 3
NUM_NFSD
NUM_NFSIOD
You may have to tune these paqrameters.
BR,
Kapil+
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тАО03-04-2010 01:03 AM
тАО03-04-2010 01:03 AM
Re: Concurrent access at nfs version 3
NUM_NFSIOD=16
we have 16 cpus in this server. at it's busy time,abount 1600% cpu used.
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тАО03-04-2010 04:38 PM
тАО03-04-2010 04:38 PM
Re: Concurrent access at nfs version 3
If a great many of your operations are reads you might consider adding RAM to the system and/or allowing the filesystem buffer cache to be larger.
It might also be good to check things like netstat and lanadmin statistics.
You might also consider an upgrade to a more powerful system...
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тАО03-04-2010 05:07 PM
тАО03-04-2010 05:07 PM
Re: Concurrent access at nfs version 3
we have 32GB total physical memory,1.2GB used for cache.i don't know if it is enough for our system. most time,our server only 2% cpu used and with over 20GB free memory left,it seems waste to upgrade to a more powerful system.any more suggestions?
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тАО03-04-2010 05:15 PM
тАО03-04-2010 05:15 PM
Re: Concurrent access at nfs version 3
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тАО03-04-2010 05:26 PM
тАО03-04-2010 05:26 PM
Re: Concurrent access at nfs version 3
If your buffer-cache is low and you are not running short of memory then you can increase this parameter it would help for sure.
BR,
Kapil+
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тАО03-04-2010 05:48 PM
тАО03-04-2010 05:48 PM
Re: Concurrent access at nfs version 3
Regards,
Dave
[Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise]