Stefan Foerster:
> In case of severe server "overload", with postscreen(8) complaining
> about lookup and update times around 400ms almost every mail, is it
> (reasonably) safe as a last desperate measure to put $data_directory,
> or at least the file referenced by $postscreen_cache_map, on a ramdisk
> (e.g. "tmpfs" with Linux)?
Sure, but why do you expect that it will be FASTER?
Are you perhaps running a busy mail server off a single disk drive?
In that case, splitting the load over multiple drives would make
a big difference.
Is perhaps your system slow because of swapping? In that case,
using tmpfs will make the system swap even more. Instead, even
reducing the process count by 20% could result in a big over-all
improvement.
I haven't seen any attempt at a quantitative analysis of the
problem, so I won't speculate further.
Wietse
