Does NFS client cache?
 

Hi Guys,

My laptop and the network of computers I work with have Redhat 6.2. (But we can upgrade to Redat 7.2 if necessary.) I was wondering if the NFS clients are caching? I am in the process of writing a distributed application and it would be really nice if Linux cached the disk reads locally.. save me a ton of work writing my own cache manager.

Anyone know or have an idea of where to look for the answer? I tried google and redhat.com with search words like: "linux nfs cache" with no luck. No mention of NFS caching in the official Linux kernel.. but then that doens't mean it isn't there...


Sonny.

:newbie:

there are several parameters for this however it seems to be talking about attributes


acregmin=n The minimum time in seconds that attributes
of a regular file should be cached before
requesting fresh information from a server.
The default is 3 seconds.


acregmax=n The maximum time in seconds that attributes
of a regular file can be cached before
requesting fresh information from a server.
The default is 60 seconds.


acdirmin=n The minimum time in seconds that attributes
of a directory should be cached before
requesting fresh information from a server.
The default is 30 seconds.


acdirmax=n The maximum time in seconds that attributes
of a directory can be cached before
requesting fresh information from a server.
The default is 60 seconds.


actimeo=n Using actimeo sets all of acregmin, acreg*
max, acdirmin, and acdirmax to the same
value. There is no default value.





this is from the man files

you can also set the connection timeouts so that may help