cyrus-imapd 2.2 db3 or db4?
leg+ at andrew.cmu.edu
Wed May 7 14:43:53 EDT 2003
Date: Wed, 7 May 2003 10:06:34 -0400 (EDT)
From: Rob Siemborski <rjs3 at andrew.cmu.edu>
> Are there any issues with skiplist and duplicate.db? db4 (db-4.1.25) on a
> busy server doing duplicatesuppression does not do well. I will test
> skiplist on a small server first or I will need to turn
> duplicatesuppression off.
There shouldn't be any reasons against it, no.
Well, performance. Skiplist requires two synchronous writes for every
modification, and allows only one writer at a time.
Berkeley db uses asynchronously (which is how we keep the duplicate
delivery database) can do much much better than this.
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