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


I just tested the configuration in ITS#2580 on Linux (RH8.0)
and it runs ok to the completion both with hdb and with bdb
(--enable-aci --enable-crypt --enable-hdb --enable-bdb --enable-monitor --disable-debug).
Please make sure you've run the test with the latest HEAD
(It could be a platform dependent problem if it persist with the latest HEAD.).
BTW, as I remember, the select() behavior mentioned in ITS#2580 was already fixed.
- Jong

------------------------
Jong Hyuk Choi
IBM Thomas J. Watson Research Center - Enterprise Linux Group
P. O. Box 218, Yorktown Heights, NY 10598
email: jongchoi@us.ibm.com
(phone) 914-945-3979    (fax) 914-945-4425   TL: 862-3979


Michael Ströder <michael@stroeder.com>
Sent by: owner-openldap-devel@OpenLDAP.org

07/01/2003 12:54 PM

       
        To:        Jonghyuk Choi/Watson/IBM@IBMUS
        cc:        Howard Chu <hyc@highlandsun.com>, openldap-devel@OpenLDAP.org
        Subject:        Re: Berkeley DB congestion control patch (RE: commit: ldap/servers/slapd/back-bdb trans.c ...)



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.