Just thinking here, generally a bad idea... I've been reading the
Postfix list lately, on which Linux is dissed for a couple of reasons:
a) asynchronous flushing in ext2fs causes lost mail
This is a good reason to diss, and I've been avoiding ext2fs for a while
now. It looks like ReiserFS is a good choice for a mail queue, but I
need to verify that.
b) over-aggressive disk caching in 2.2 kernels causes unneccessary
churn.
This got me thinking -- does LRP have a disk cache? And if so, why?
Caching one hunk of system RAM in another is not sensible. So:
willard: -root-
# free
total: used: free: shared: buffers: cached:
Mem: 23310336 16236544 7073792 4526080 6193152 4861952
Swap: 0 0 0
MemTotal: 22764 kB
MemFree: 6908 kB
MemShared: 4420 kB
Buffers: 6048 kB
Cached: 4748 kB
SwapTotal: 0 kB
SwapFree: 0 kB
willard: -root-
# df
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/ram0 6076 4441 1635 73% /
/dev/fd0u1680 1662 1496 166 90% /mnt
/dev/fd1u1680 1664 970 694 58% /mnt1
My entire 6 meg ramdisk is being buffered?!?!?
Any ideas about how to turn off buffering, or bad effects from doing so?
--
Jack Coates
Monkeynoodle: It's what's for dinner!
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