Hari Hendaryanto:
> hi,
>
> i'm runing postfix-2.9-20110116, i've seen this warning
>
> Jan 17 11:38:37 mx1 postfix/postscreen[17083]: warning:
> psc_cache_update: /var/lib/postfix/postscreen_cache.db update took 103 ms
If this happens often, this means that postscreen cannot handle
more than 10 SMTP connections per second, or that your system clock
is jumping (as in: running inside a VM).
I see the warning once a day on my lightly-loaded server with a
single 15kRPM disk under an ancient CPU; the timing suggests that
this happens while some cron job is doing house cleaning.
I added this check because someone insisted on running postscreen
on top of an SQL database, and complained that postscreen performance
was erratic. After I added the warning he stopped complaining.
Wietse
