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Re: Berkeley DB congestion control patch (RE: commit: ldap/servers/slapd/back-bdb trans.c ...)

To: Jonghyuk Choi <jongchoi@us.ibm.com>
Subject: Re: Berkeley DB congestion control patch (RE: commit: ldap/servers/slapd/back-bdb trans.c ...)
From: Michael Ströder <michael@stroeder.com>
Date: Tue, 01 Jul 2003 18:54:00 +0200
Cc: Howard Chu <hyc@highlandsun.com>, openldap-devel@OpenLDAP.org
In-reply-to: <OFB9ED1C53.EC2CC39D-ON85256D56.004F1802-85256D56.00524096@us.ibm.com>
References: <OFB9ED1C53.EC2CC39D-ON85256D56.004F1802-85256D56.00524096@us.ibm.com>
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3.1) Gecko/20030425

Jonghyuk Choi wrote:

This patch relieves the deadlock contention of Berkeley DB significantly. The patch is based on exponential backoff widely used in the multiple access control.

> [..]

With the congestion control patch, test008-concurrency becomes stable in both boxes.


Unfortunately it does not solve ITS#2580.

http://www.openldap.org/its/index.cgi/Development?id=2580;selectid=2580

Ciao, Michael.

References:
- Berkeley DB congestion control patch (RE: commit: ldap/servers/slapd/back-bdb trans.c ...)
  - From: Jonghyuk Choi <jongchoi@us.ibm.com>

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