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2010 Sep 10
11
Large directory performance
...owerEdge 2950s. 2 8-core sockets with X5355 @ 2.66GHz and 16Gb of RAM.
The data is on DDN S2A 9550s with 8+2 RAID configuration connected directly with 4Gb Fibre channel.
They are running RHEL 4.5, Lustre 6.7.2-ddn3, kernel 2.6.18-128.7.1.el5.ddn1.l1.6.7.2.ddn3smp
As a side note the users code is Parflow, developed at LLNL. The files are SILO files. We have as many as 1.4 million files in a single directory and we now have half a billion files that we need to deal with in one way or another. The code has already been modified to split the files on newer runs until multiple subdirectories, but we...