xfssyncd syncing every five seconds?

[Jeremy Field <jezza@xxxxxxxxx>]

Hello,

I am using linux 2.4.21 with xfs 1.3 on debian-unstable. Since I
upgraded from 2.4.18-xfs-1.1, my xfs partitions have been showing pulses
of activity every five seconds, I think because of xfssyncd. The hard
drive physically seeks every five seconds too.

I have reviewed this mailing list and elsewhere for clues, but can't
work out either:
        a) whether this behaviour is normal, or
        b) how to change the interval.

I am concerned that this behaviour is causing my drive unnecessary wear
and would like to understand what's going on...

Thanks in advance!
Jeremy