Date: Tue, 1 May 2001 19:49:19 -0400 From: "Ingram, Russell" <RI122065@exchange.SanDiegoCA.NCR.COM> To: freebsd-questions@FreeBSD.org Subject: NFS performance problem Message-ID: <61A60D883863D411A36600D0B785B50C040B1CAD@susdayte51.daytonoh.ncr.com>
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I just recently moved my NFS services to a 4.2 FreeBSD system. It was
crashing on the 3.3 FreeBSD system that was supporting file service before.
It doesn't crash now, but, I'm getting "rtss09: no NFS service" messages on
the client machines intermittently when trying to access the NFS filesystems
on FreeBSD 4.2(rtss09).
I'm wondering if I need to boost the number of nfsd's or increase the
nfs_access_cache? If so how much do I increase this? It is unclear from the
man page how many simultaneous exported filesystems each nfsd supports. I
can't afford to reboot this system more then once or twice to get this
right.
Background:
I'm serving up 9 NFS file systems to 7 unix systems (2 Suns, 1 BSD, and 4 .
This is about 30 Gig of files in the filesystems. I use automounters to
mount the NFS filesystems. All of the unix systems are running under program
control. The FreeBSD system is a dual 750 MHZ Xeon based system (Gigs of
RAM) with Intel Ethernet adapters on a switched 100 MBIT network. When this
was hosted on 3.3 BSD system I never saw NFS not responding, but then it's
been crashing more and more often. I always assumed this was caused by the
network problems that were present on the flooded 10 base T network this 3.3
BSD system was living on. The 3.3 system only had the default 4 nfsd's the
same as the 4.2 BSD system.
nfsstat output:
Server Info:
Getattr Setattr Lookup Readlink Read Write Create
Remove
669383 14004 1052705 0 935722 790838 178602
168567
Rename Link Symlink Mkdir Rmdir Readdir RdirPlus
Access
811 0 0 2832 2654 21197 13034
398433
Mknod Fsstat Fsinfo PathConf Commit GLease Vacate
Evict
0 21959 310 109 226076 0 0
0
Server Ret-Failed
412317
Server Faults
0
Server Cache Stats:
Inprog Idem Non-idem Misses
183 216950 176655 4098547
Server Lease Stats:
Leases PeakL GLeases
0 0 0
Server Write Gathering:
WriteOps WriteRPC Opsaved
790800 790838 38
Any direction that would help me solve this would be appreciated and would
help reestablish the BSD systems as the most reliable of all the systems we
use.
Russell Ingram x2758
(858)485-2758 VP-440-2758
Russell.Ingram@sandiegoca.ncr.com
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