Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch (DebianAdministration)

Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch (DebianAdministration)

Posted Apr 26, 2006 3:33 UTC (Wed) by hathawsh (guest, #11289)
In reply to: Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch (DebianAdministration) by gdt
Parent article: Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch (Debian Administration)

In my own informal tests, XFS and JFS can reach over 90% of the theoretical limit. Specifically:

dd if=/dev/zero bs=1048576 of=/dev/sda1 count=650 # 60 MB/s (theoretical limit)
dd if=/dev/zero bs=1048576 of=/media/sda1/bigfile count=650 # 55 MB/s (practical limit)

These are the rates I see regularly with 7200 RPM, 320 GB drives using an Athlon 64 3200+. ReiserFS and Ext3 turned out slower for this purpose, although I don't remember how much slower.

BTW, one crazy idea I've been toying with is using LVM2 as a filesystem for large files. Use each partition as a file. You could control the placement of every file, giving you 99% of the theoretical transfer rate with virtually no CPU usage. It might be great for digital video and PVRs like MythTV.

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     "BTW, one crazy idea I've been toying with is using LVM2 as a   
     filesystem for large files. Use each partition as a file. You could 
     control the placement of every file, giving you 99% of the theoretical 
     transfer rate with virtually no CPU usage. It might be great for 
     digital video and PVRs like MythTV."