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Top Forums UNIX for Dummies Questions & Answers Want to improve the rsize and wsize of nfs mounted drives Post 302672119 by rakeshkumar on Monday 16th of July 2012 02:52:28 AM
Old 07-16-2012
Want to improve the rsize and wsize of nfs mounted drives

Hi
we have couple of nfs mounts between various linux servers. Recently i was wondering how to improve the performance by altering the parameters "msize" and "rsize" for nfs.
In my machine i have determined the NFSSVC_MAXBLKSIZE_V2 = 8*1024 but kernel 2.6 supports upto 32k Optimizing NFS Performance

Please help me with below questions
1) Do i need to recompile the kernel to take 32k support
2) Does making it 32k reduces the performance of overall system

Also please let me know if there are any other optimization parameters.

Any help is much appreciated

Thanks
 

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NFSMOUNT.CONF(5)						File Formats Manual						  NFSMOUNT.CONF(5)

NAME
nfsmount.conf - Configuration file for NFS mounts SYNOPSIS
Configuration file for NFS mounts that allows options to be set globally, per server or per mount point. DESCRIPTION
The configuration file is made up of multiple sections followed by variables associated with that section. A section is defined by a string enclosed by [ and ] branches. Variables are assignment statements that assign values to particular variables using the = operator, as in Proto=Tcp. Sections are broken up into three basic categories: Global options, Server options and Mount Point options. [ NFSMount_Global_Options ] - This statically named section defines all of the global mount options that can be applied to every NFS mount. [ Server "Server_Name" ] - This section defines all the mount options that should be used on mounts to a particular NFS server. The "Server_Name" strings needs to be surrounded by '"' and be an exact match of the server name used in the mount command. [ MountPoint "Mount_Point" ] - This section defines all the mount options that should be used on a particular mount point. The "Mount_Point" string needs to be surrounded by '"' and be an exact match of the mount point used in the mount command. EXAMPLES
These are some example lines of how sections and variables are defined in the configuration file. [ NFSMount_Global_Options ] Proto=Tcp The TCP protocol will be used on every NFS mount. [ Server "nfsserver.foo.com" ] rsize=32k wsize=32k A 33k (32768 bytes) block size will be used as the read and write size on all mounts to the 'nfsserver.foo.com' server. [ MountPoint "/export/home" ] Background=True All mounts to the '/export/home' export will be performed in the background (i.e. done asynchronously). FILES
/etc/nfsmount.conf Default NFS mount configuration file SEE ALSO
nfs(5), mount(8), 9 Mar 2008 NFSMOUNT.CONF(5)
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