I posted this to the NFS list and was told to post here.
I have a box with 4GB. It's running Red Hat Fedora Core 3 with 2.6.10 as distributed by them. No custom kernel compiling, and no desire :)
The problem reported below DID NOT happen with 2.4.21. It did happen also with 2.6.9, and I cannot comment on other kernels. So, it happens with 2.6.9 and 2.6.10, but not 2.4.21, and anything else has not been tried.
I am trying to run Iozone with -g and an argument to it that is larger than the physical memory in the NFSv3 client machine.
For instance, on this 4GB box, I am trying '-g 4224m'. More specifically, the entire command line is:
./iozone -a -g 4224m -f /sol9box/testfile
As soon as it finally gets to trying a file size of 4194304, oom-killer steps in and starts blasting processes off my machine. NFS stops functioning, RPC calls to the box fail, SSH connections are no longer accepted, and I generally have to hard powercycle the box.
Reference: http://www.iozone.org/
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