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Full Discussion: NFS writing so slow
Operating Systems Linux Red Hat NFS writing so slow Post 302330333 by hiepng on Tuesday 30th of June 2009 11:38:00 PM
Old 07-01-2009
NFS writing so slow

Hi, I facing an NFS problem. I have machine1, which has diskA and diskB, and machine2, both are Mandriva 2009 Linux.

When I am on machine2 and NFS mount both diskA and diskB of machine1. Writing to diskA is very fast, but writing to diskB is very slow. I tried different mount rsize and wsize options, but it is still very slow on diskB.

I test with sftp to diskB, it is fast. So I think it is the NFS problem, but I could not figure it out how to fix this. Could someone help me with this. Thanks a lot.
 

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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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