[Mimedefang] ramdisks on Linux
Tim Pushor
timp at crossthread.com
Tue Mar 16 16:57:38 EST 2004
Aaron Paetznick wrote:
> It's become obvious that using ramdisks with MIMEDefang is very
> important. This might be a strange/silly question, but if I wanted to
> use a ramdisk for both the sendmail mqueue and the MIMEDefang work
> directory, would it be better to use two smaller, or one large
> ramdisk? Does using two separate ramdisks give the same performance
> benefit as using two separate physical disks?
>
I don't think you will want to use a ramdisk for the sendmail queue. If
you lose power or have to reboot your system, you will lose mail.
> Also, does the speed of the RAM and memory controller directly affect
> the speed of the ramdisk? For instance, would a ramdisk on an Intel
> 7501 based machine running dual-channel DDR266 be slower than a
> ramdisk on an AMD Opteron 246 based machine (with an on-chip memory
> controller) using dual-channel DDR400?
>
Since the disk will be in memory, memory performance should make an
impact. How much difference though I'm not sure. Probably a lot less
difference than going from a disk based work directory to a ramdisk
though ..
Tim
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