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Re: BerkeleyDB versions

--On August 14, 2007 8:39:20 AM -0700 Howard Chu <hyc@symas.com> wrote:

Gavin Henry wrote:
<quote who="Howard Chu">
Pierangelo Masarati wrote:
Howard Chu wrote:

Our early tests with DB 4.6.1 thru 4.6.3 showed impressive performance
gains, making it seem worthwhile. But we have no way of knowing how
the current 4.6.18 will perform at the moment.
Were those speedups confined to, say, write, or general?
In general. You might recall that Jong-Hyuk Choi had done some work
bottlenecks in BDB's memory management; Sleepycat never used the code
that Jong
sent them but they still rewrote their memory manager between DB 4.5.20
4.6.1 as a result of Jong's work. Since the memory manager affects all
operations in the DB library, the speedups can be seen everywhere.

If support for 4.2 is dropped in the next 2.4 beta, what is the earliest version we think we will support?

We already disallow use of 4.3 due to its instability, so 4.4 would be the minimum.

Also the BDB support guys at Oracle are now saying they'd like 4.2 to be
dropped anyway, as it's nearing its 4th birthday, and they don't want to
have to deal with it any more. I guess that's reasonable...

There's a lot of people who'd like to drop support for 4.2 (distros in particular). I'm going to take a snapshot of HEAD today before the 4.6 changes, so I can do comparison tests once the 4.6 support is in, but I think that dropping support for 4.2 is the right way to go.



Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc
Zimbra ::  the leader in open source messaging and collaboration