SDBM (was: Minimum hardware capacity for 35k e-mail scans/day)

Martin.Hepworth martinh at
Wed Nov 21 08:46:20 GMT 2007

Tried it and my box ground to a halt after 30 mins of trying to do the sa-learn --restore.

Must be semaphores or something....couldn't even login a the console. Luckily a CTRL-C on the sa-learn brought everthing back.

My bayes seems to be 330MB so that's kinda large, and the SDBM was growing slowly and had got to 260MB when it all ground to a halt....maybe my 2.8Piv and 1.5GB ram ain't enough ;-)

Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at [mailto:mailscanner-
> bounces at] On Behalf Of Rick Chadderdon
> Sent: 20 November 2007 17:31
> To: MailScanner discussion
> Subject: Re: Minimum hardware capacity for 35k e-mail scans/day
> Julian Field wrote:
> > I'm testing it out now. If it's as good as it is reckoned to be, how
> > about I make it the default in new installations? (i.e. change
> > to use it)
> SDBM has been criticized (and rejected for several projects) for having
> a small (1Kbyte or 2Kbytes, depending on where I look) maximum record
> size.  I do not know enough about the SA database to say whether this
> will be a potential factor in using SDBM with SpamAssassin, but perhaps
> someone with more knowledge can use this information.  If we can count
> on SA always keeping the records smaller than SDBM's max, this sounds
> like a good way to increase performance.  On the other hand, it's the
> kind of thing that SA could cause to break with a relatively simple
> change in what they store in the DB
> Rick
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