NFS defaults for read/write blocksize....(Was: Re: 5.4/amd64
Willem Jan Withagen
wjw at withagen.nl
Mon Apr 18 12:53:54 PDT 2005
Claus Guttesen wrote:
>>>>By the way, I'm thinking that more frequently hang might related with
>>>>large read/write block in mount_nfs -r/-w (I use 8192, original is 1024).
>>>That's certainly possible since non-default settings don't get as much
>>>testing. It would be good to get a traceback.
>>Has it even been considered to up these values to something bigger??
> Read- and write-size of 32768 seems to work optimal for me:
How did you come to this conclusion? What kind of workload?
> nfssrv:/nfsmnt /localsrv/nfsmnt nfs
> rw,tcp,intr,nfsv3,-w=32768,-r=32768 0 0
> Nfs-server is an i386 and clients are i386 and amd64.
This is in line with what the graphs suggest:
Use Laaarrrrrggggeee sizes.
But because of the non-significance of bonnie, I'm reluctant to accept my work
as 100% proof.
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