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Thu, 19 Jun 2008

POHMELFS, NFS, Ext4 and XFS in iozone benchmark. Graphs.

Hardware used in testing: 4-way Intel E7520 system (two logical and two physical CPUs) 3Ghz 32 bit Xeons with 1gb of ram, Adaptec AIC7902 Ultra320 SCSI adapter with SEAGATE ST3300007LC 10k rpm 300 Gb testing disk. Its linear reading speed is about 90 MB/s.

Software used in testing: 2.6.25 kernels (on server and client), in-kernel async NFS server, userspace POHMELFS server.

Tests were performed with 8gb files (amount of ram was reduced to 1gb to eliminate caching influence) with different (from 8 to 1024 KB) record size. I ran write/rewrite, read/reread and random read and write tests.

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