FreeBSD filesystem performance in Enterprise
Charles McManis
cmcmanis at mcmanis.com
Mon Mar 1 14:37:45 PST 2004
FFS is fine, until you crash.
Generally a FreeBSD machine with FFS and Softdeps can keep up, the challenge
comes when you have to fsck everything to get back from a crash. That is why
things like LFS et alia are useful. For things like mail directories the
problem can be partitioned into dozens or thousands of nodes. Yahoo uses
NetApp filers for this.
How many filesystem ops/second? Generally it will constrain how many emails a
day you process at some level. Will it work? Sure, it will work fine. And on
a RAID system it will be unlikely to corrupt data, and with a file system
mirror you will be unlikely to lose data.
--Chuck
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