I see that I'm outdated in my tuning as per http://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning. I'll do these changes and observe the servers.

In the mean time a new observation regarding syncrepl is that if I do ldapmodify for 5 - 10 entries in one go the changes get replicated but if I change about 300 entries in one go, then some entries do not get replicated on some servers. These changes dont get replicated until I change those entries again.

Does this indicate provider resource problem or consumer resource problem ( or normal behaviour ) ?

----- Original Message ----- From: Quanah Gibson-Mount Sent: 03/11/12 02:05 AM To: Amol Kulkarni, Howard Chu Subject: Re: slow or inconsistent syncrepl

--On Saturday, March 10, 2012 2:34 PM +0100 Amol Kulkarni amolkulkarni@gmx.com wrote: > > >>> That depends entirely on the speed of your server and network. > > Taking the server part first - I'm also doubt that my provider server is > underpowered. > > Following are the ldap specific parameters on our provider server : > > entries : 0.5 million > avg entry size : 1k to 4k > cachesize : 0.5 million > dncachesize : 0.5 million > database type : bdb > bdb cachesize : 3 gb > ldap threads : 16 > > Foll is hardware configuration of the provider server : > ram : 8gb > swap : 8gb > cpu : Virtual machine with 4 cpus. (vmware vsphere) > architecture : 64 bit > > Also we have some administrative services/tasks running on the provider > server other than openldap. But the sar output seems normal i.e iowait > below 10 and idle time above 50. > > Does the hardware configuration seem ok for the given ldap size and > configuration ? > > If not, can u suggest some changes? You don't provide any useful information for suggesting changes. I would advise you read over http://wiki.zimbra.com/wiki/OpenLDAP_Performance_Tuning -- Quanah Gibson-Mount Sr. Member of Technical Staff Zimbra, Inc A Division of VMware, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration