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тАО01-27-2004 07:59 AM
тАО01-27-2004 07:59 AM
Re: Strange performance issue
- James.
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тАО01-27-2004 09:03 PM
тАО01-27-2004 09:03 PM
Re: Strange performance issue
Some info I forgot and is asked: we don't have this issue on 11i systems (used as storage node). James, thanks for testing, but we had done this too.
One thing to bear in mind: the problem does not exist when using cp, so it can/should not be directly network related !
Jeff, I will look into the patches.
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тАО01-28-2004 04:20 AM
тАО01-28-2004 04:20 AM
Re: Strange performance issue
You may want to check biods and run nfsstat -m during your tests.
I'll do the latest NFS patches first.
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тАО01-28-2004 05:49 AM
тАО01-28-2004 05:49 AM
Re: Strange performance issue
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тАО01-28-2004 07:21 PM
тАО01-28-2004 07:21 PM
Re: Strange performance issue
With 16 biods (the situation I started with), the performance dropped after 2 Gb.
With 4 biods and 2 biods, the same.
With 1 biod, the speed is a bit better with 1 stream, but totally unacceptable with multiple streams.
With 0 biods, we have the most stable solution, right now.
I'm going to test patch 28995 (GE-LAN patch) now. Haven't yet have time to look into Jeff's patch list.
Since I don't know yet what solves the problem, I can not yet assign points.
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тАО01-28-2004 07:32 PM
тАО01-28-2004 07:32 PM
Re: Strange performance issue
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тАО01-28-2004 09:12 PM
тАО01-28-2004 09:12 PM
Re: Strange performance issue
- James.
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тАО01-28-2004 09:18 PM
тАО01-28-2004 09:18 PM
Re: Strange performance issue
http://www.netapp.com/tech_library/3146.html
Do everything - hidden kernel parameters etc. Read it thoroughly.
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тАО02-02-2004 05:51 PM
тАО02-02-2004 05:51 PM
Re: Strange performance issue
James, I also tried to read from the disk when copying to another NFS disk. But since I'm going to use those disks for backup, write performance is the most important. When restoring, the network to the client trying to restore will be the bottleneck... So it may be a bit slower, though I assume using biods will improve performance then.
We're still looking into it... And HP and Legato are too. But no solution yet...
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тАО02-08-2004 07:56 PM
тАО02-08-2004 07:56 PM
Re: Strange performance issue
HP still has not come up with a solution. As has Legato.
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