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04-19-2007 02:09 AM
04-19-2007 02:09 AM
NFS read/write slow performance
I found the some errors in RX as given below:
eth0 Link encap:Ethernet HWaddr 00:0E:0C:58:4D:F2
inet addr:129.103.250.28 Bcast:129.103.250.255 Mask:255.255.255.0
inet6 addr: fe80::20e:cff:fe58:4df2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2555421 errors:390 dropped:0 overruns:0 frame:390
TX packets:1739947 errors:0 dropped:0 overruns:0 carrier:0
collisions:445082 txqueuelen:1000
RX bytes:455385847 (434.2 Mb) TX bytes:2332540689 (2224.4 Mb)
Base address:0x7400 Memory:fedc0000-fede0000
Can someone guide me to resolve the above problem.
The NFS server is running in Tru64 V5.1A and the client in on Suse Linux
Thanks & Regards,
Martin
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04-19-2007 02:47 AM
04-19-2007 02:47 AM
Re: NFS read/write slow performance
The back end sounds a little slow.
http://www.citi.umich.edu/projects/nfs-perf/results/cel/write-throughput.html
http://searchenterpriselinux.techtarget.com/expert/KnowledgebaseAnswer/0,289625,sid39_gci918089,00.html
http://nfs.sourceforge.net/
Last link looks best.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
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04-19-2007 02:52 AM
04-19-2007 02:52 AM
Re: NFS read/write slow performance
Also, are you using specific NFS mount options? You may want to try "rsize=8192,wsize=8192".
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04-19-2007 03:06 AM
04-19-2007 03:06 AM
Re: NFS read/write slow performance
error: 390
collisions: 445082
These kind of problems normally occurs when the negotiation between the switch and the network adapter does not match the speed and duplex mode.
Use ethtool to get/set the speed and duplex mode, configure your network switch at the same speed/duplex.
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04-19-2007 01:01 PM
04-19-2007 01:01 PM
Re: NFS read/write slow performance
Attached is boilerplate on duplex mismatch for 100BT links.
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04-20-2007 05:27 PM
04-20-2007 05:27 PM
Re: NFS read/write slow performance
collisions:445082
Most probably the speed and neg.
/sbin/mii-tool (mii-tool - view, manipulate media-independent interface
status
)
will show you the status. I am using RH and am not sure whether it is avble on Suse.
nfsstat -c
also will give you good info to troubleshoot problems.
Regards,
Rasheed Tamton.
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04-22-2007 06:04 PM
04-22-2007 06:04 PM
Re: NFS read/write slow performance
Thanks & Regards,
Martin