Converting deliver.db from berkely-nosync to skiplist

[Ken Murchison]

Brenden Conte wrote:

> Skiplist doesn't have fast lookups?  I admit to not knowing the 
> intricacies of the various formats, but i thought skiplist and Berkeley 
> were at least comparable, as the opinion i've seen has been that 
> skiplist is better, especially when encountering corruption with berkeley.

For random lookups, such as deliver.db and tls_sessions.db, berkeley is 
faster.  For enumerating the database, such as performing an IMAP LIST 
command, skiplist is faster.




> --On Sunday, September 25, 2005 11:08:28 AM +0200 Henk.Roose at cwi.nl wrote:
> 
>> Brenden Conte wrote:
>>
>>> Using RPM version of 2.2.10 and Berkeley DB 4.1.25...
>>>
>>> We've run into problems the last few nights with corruption of the
>>> duplicate delivery database (delivery.db).   I tried disabling it,
>>> however  that caused processes to fail to communicate to the local lmtp
>>> sockets for  some reason.  We do enjoy this feature, and disabling it
>>> was no the optimal  solution, so we would like to convert it to 
>>> skiplist.
>>
>>
>> Don't, you need fast lookups. When this file gets corrupted just move it
>> out of the way between a stop and start.
>>
>>> Also, I noted in the man page that it also includes sieve in the
>>> description for that option.  I was unaware of any sieve database -
>>> where  is it (or is it old, left over from previous versions)?
>>>
>>> Thanks,
>>> Brenden
>>>
>>>
>>>
>>> ----
>>> Cyrus Home Page: http://asg.web.cmu.edu/cyrus
>>> Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
>>> List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
>>
>>
>> Henk
>>
>> -- 
>> Henk Roose <Henk.Roose at cwi.nl>
>> CWI - Centrum voor Wiskunde en Informatica
>> Centre for Mathematics and Computer Science
>> Amsterdam (NL)
>> ----
>> Cyrus Home Page: http://asg.web.cmu.edu/cyrus
>> Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
>> List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
> 
> 
> 
> 
> 
> ----
> Cyrus Home Page: http://asg.web.cmu.edu/cyrus
> Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu
> List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
> 


-- 
Kenneth Murchison     Oceana Matrix Ltd.
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