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Re: funny idle time from time



On Sat, 1 Sep 2001 12:18, Wouter Verhelst wrote:
> I agree with most of what you say, but not with this. You can say a lot
> about NFS, including that it's bad, insecure, to be thrown away and
> changed by CODA or sth else, but not that it's slow.
>
> I've seen data transfers of ~800KByte/s via NFS. Over my 10MBit coax
> network. From a Pentium 166 to a Pentium 133. I don't know any other
> network file serving protocol that can do this.

What other network protocols have you tried?

I have attached the results from running Bonnie++ with my Thinkpad (P3-650,
256M) as an NFS client with both 10 baseT PC-Card and 100baseT CardBus
network cards connected to an Athlon 800 with 256M, PCI 100baseT card and
with a full duplex switch in between.  The only time that NFS is really
efficient is bulk input.

I mounted the NFS share with rsize?92,wsize?92,nolock.

Both machines run 2.4.9 and the NFS serving is in the kernel.

I tried using smbfs but it dropped out under load (seems to be a bug in the
client code).

I tried making the Thinkpad the NFS server, but it wasn't fast enough and the
client thought that it had fallen off the net and started the laborious
back-off process (which kills performance).


The end result, NFS isn't nearly as fast as it should be, but SMB is worse
because I couldn't get it to work.


Let's redirect this discussion to debian-user...

--
http://www.coker.com.au/bonnie++/     Bonnie++ hard drive benchmark
http://www.coker.com.au/postal/       Postal SMTP/POP benchmark
http://www.coker.com.au/projects.html Projects I am working on
http://www.coker.com.au/~russell/     My home page
Title: Bonnie++ Benchmark results
Version 1.92aSequential OutputSequential InputRandom
Seeks
Sequential CreateRandom Create
SizeChunk SizePer CharBlockRewritePer CharBlockNum FilesMax SizeCreateReadDeleteCreateReadDelete
K/sec% CPUK/sec% CPUK/sec% CPUK/sec% CPUK/sec% CPU/sec% CPU/sec% CPU/sec% CPU/sec% CPU/sec% CPU/sec% CPU/sec% CPU
lyta-100-nfs999367121496M54699488532407271298102753177.011617929434016192411161185124151454
lyta-100-nfsLatency716086us2683ms457ms39709us871msLatency462ms164ms12271us132ms98528us728us
lyta-10-nfs999378658496M4039988434244471941209087.8416590141127165801158815123219155
lyta-10-nfsLatency330693us1227ms848ms52184us674msLatency774ms88644us25376us114ms115ms7331us
1.92a,1.92a,lyta-100-nfs,999367121,496M,,546,99,4885,3,2407,2,712,98,10275,3,177.0,1,16,,,,,1792,9,4340,16,1924,11,1611,8,5124,15,1454,7,16086us,2683ms,457ms,39709us,871ms,462ms,164ms,12271us,132ms,98528us,728us,142ms
1.92a,1.92a,lyta-10-nfs,999378658,496M,,403,99,884,3,424,4,471,94,1209,0,87.8,4,16,,,,,590,14,1127,16,580,11,588,15,1232,19,155,3,30693us,1227ms,848ms,52184us,674ms,774ms,88644us,25376us,114ms,115ms,7331us,139ms

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