[prev in list] [next in list] [prev in thread] [next in thread] 

List:       openldap-software
Subject:    Re: caching magic
From:       Howard Chu <hyc () symas ! com>
Date:       2004-06-18 6:04:27
Message-ID: 40D285EB.50509 () symas ! com
[Download RAW message or body]

Tony Earnshaw wrote:

> tor, 17.06.2004 kl. 22.47 skrev Howard Chu:
>>>>database    bdb
>>>>shm_key     5
>>
>>>This can go in DB_CONFIG:
>>>http://www.sleepycat.com/docs/api_c/env_set_shm_key.html
>>
>>No, that alone is not enough. If it were enough by itself, I would never 
>>have added this code to back-bdb. You also need to set the DB_SYSTEM_MEM 
>>flag when creating the environment, and this flag cannot be set in 
>>DB_CONFIG. Using the shm_key keyword tells back-bdb the key *and* tells 
>>it to set the flag when creating the environment.

> Could you please indicate where setting DB_SYSTEM_MEM and any other
> similar environment parameters is documented? Wish to read up on it :)

This is not a user-settable flag, it's part of the back-bdb code that 
invokes the BDB library. Go ahead and read up on DB_ENV->open for the 
details, but it is irrelevant if you're not writing actual C code. While 
this overall email thread may be relevant for OpenLDAP users, this 
particular keyword is not.
-- 
   -- Howard Chu
   Chief Architect, Symas Corp.       Director, Highland Sun
   http://www.symas.com               http://highlandsun.com/hyc
   Symas: Premier OpenSource Development and Support
[prev in list] [next in list] [prev in thread] [next in thread]