'bonnie'. not sure that it will work over nfs. probably not. but you probably need to tweak local disk performance before you worry about NFS anyway. elijah > Hi, I have checked the archive, but I can't find any reference to a simple > IO 'tester' app to benchmark disk IO. > > I am fairly sure it would be easy to write a little tool to do this. Has > anyone done that? > > I would like to be able to say things like > > ioRateTool --test-file /IDEDiskMount/testFile.scratch > ioRateTool --test-file /SCSIDiskMount/testFile.scratch > ioRateTool --test-file /NFSDiskMount/testFile.scratch > ioRateTool --test-file /ramfsDiskMount/testFile.scratch > ioRateTool --test-file /dev/null/testFile.scratch > > Although I guess that last one could only measure 'disk' write speed and > not read speed. > > I want to see if my current NFS settings can be optimized, and I would > like a clean (and hopefully robust) way to check what effect changing the > options have. > > Thanks for any pointers, > Dan. > > Ahhh... I just found the collective NFS rant... > > We use NFS as our principal 'communication' channel, that is to say it is > our group sand box. We put all our downloaded databases / scripts / data / > homes on one big nfs server. This allows us to work on the same data > easily, share files / results etc. > > Most of our 'day to day' computing is over this data. > > How many Hail Mary's should I say?