On Mon, 15 Oct 2018 18:34:50 -0400, "Kumaran Rajaram" said: > 1. >>When writing to GPFS directly I'm able to write ~1800 files / second in > a test setup. > >>This is roughly the same on the protocol nodes (NSD client), as well as > on the ESS IO nodes (NSD server). > > 2. >> When writing to the NFS export on the protocol node itself (to avoid > any network effects) I'm only able to write ~230 files / second.
> IMHO #2, writing to the NFS export on the protocol node should be same as #1. > Protocol node is also a NSD client and when you write from a protocol node, it > will use the NSD protocol to write to the ESS IO nodes. In #1, you cite seeing > ~1800 files from protocol node and in #2 you cite seeing ~230 file/sec which > seem to contradict each other. I think he means this: 1) ssh nsd_server 2) cd /gpfs/filesystem/testarea 3) (whomp out 1800 files/sec) 4) mount -t nfs localhost:/gpfs/filesystem/testarea /mnt/test 5) cd /mnt/test 6) Watch the same test struggle to hit 230. Indicating the issue is going from NFS to GPFS (For what it's worth, we've had issues with Ganesha as well...)
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