Hi, On Fri, Mar 21, 2008 at 09:08:28PM +0100, Dieter Maurer wrote: > Chris Withers wrote at 2008-3-20 22:22 +0000: > >Roché Compaan wrote: > >> Not yet, they are very time consuming. I plan to do the same tests over > >> ZEO next to determine what overhead ZEO introduces. > > > >Remember to try introducing more app servers and see where the > >bottleneck comes ;-) > > We have seen "commit contention" with lots (24) of zeo clients > and a high write rate application (allmost all requests write to > the ZODB).
I talked to Brian Aker (MySQL guy) two weeks ago and he proposed that we should look into a technique called `group commit` to get rid of the "commit contention". Does anybody know this technique already and maybe has a pointer for me? Christian -- gocept gmbh & co. kg - forsterstrasse 29 - 06112 halle (saale) - germany www.gocept.com - [EMAIL PROTECTED] - phone +49 345 122 9889 7 - fax +49 345 122 9889 1 - zope and plone consulting and development _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev