Hi Bjorn,
Bjorn Jensen wrote:
Ramprasad wrote:
On Wed, 2006-08-09 at 10:27 +0200, Bjorn Jensen wrote:
Can spamassassin benefit in any way from a ramdisk ?
The server we have for spamassassin, has 3 gigs of ram, and spamd
doesn't even use 1 gig of that, so I thought perhaps it would speed
things up if I could place something on a ramdisk. But this leads to
the question, does spamassassin do any disk intensive things ?
I'm running that gocr image scanning as well, could this benefit from
it, or is it the network lookups that are the slow part in any case ?
Currently a mail is processed in about 1.5 - 6 seconds
regards,
Bjorn Jensen
Can you get your MTA to write in the ramdisk while it is queing/scanning
the mail. That is where you will get most of your speed. But this may
not be a safe option always.
Typically using scanners like Mailscanner , you could do the actual Mail
scanning when the mail is on the ramdisk. That gives you good
performance benefit. http://www.mailscanner.info/serve/cache/120.html
I appreciate the response on this topic, however I was merely interested
in the spamassassin aspect of this, and if I could gain a benefit there,
and I'm not interested in any mailserver options at the moment.
But once again, thanks for taking the time to reply.
Regards,
Bjorn Jensen
I realise this thread is a week old now, but I thought you might be
interested to know that we cut disk access by nearly 60% on a set of six
mailservers by moving the Bayes and auto-whitelist berkeley databases to
a ramdisk. I'm not sure whether you will be able to achieve a similar
speed-up (the databases used to be on a RAID-5 filesystem in our case,
so small writes such as database updates required reads from all other
disks in the RAID), but there are some definite benefits to be gained
from doing this. Of course, if you're using an SQL database as your
bayes store, this is irrelevant.
Cheers,
--alex
