Minimum hardware capacity for 35k e-mail scans/day

Julian Field MailScanner at
Tue Nov 20 18:08:03 GMT 2007

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Rick Chadderdon wrote:
> 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
Another criticism of SDBM: I just tried converting my Bayes db files 
(670Mb) to SDBM and they grew by more than a factor of 3 ! (2048Mb)


- -- 
Julian Field MEng CITP
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