Searches causing disk writes

2011-10-28 Thread Adam Wale
Hi, I'm observing an issue where a large number of searches against an openldap server results in a large amount of disk writes occurring. I have 10 hosts performing the same workload, the hosts are running slapd 2.4.21 under Ubuntu Lucid. If I stop searching against one of the hosts I see dis

Re: Searches causing disk writes

2011-10-28 Thread Hallvard B Furuseth
Adam Wale writes: > I'm observing an issue where a large number of searches against an > openldap server results in a large amount of disk writes occurring. Maybe you have set a high loglevel in slapd.conf, or you are using the slapd '-d' argument. Loglevel is what gets logged to syslog. Default

RE: Searches causing disk writes

2011-10-28 Thread Adam Wale
Subject: Re: Searches causing disk writes Adam Wale writes: > I'm observing an issue where a large number of searches against an > openldap server results in a large amount of disk writes occurring. Maybe you have set a high loglevel in slapd.conf, or you are using the slapd '-d'

Re: Searches causing disk writes

2011-10-28 Thread Christopher Wood
lvard Breien Furuseth [h.b.furus...@usit.uio.no] > Sent: Saturday, 29 October 2011 8:47 AM > To: Adam Wale > Cc: openldap-technical@openldap.org > Subject: Re: Searches causing disk writes > > Adam Wale writes: > > I'm observing an issue where a large number of searches

RE: Searches causing disk writes

2011-10-29 Thread Adam Wale
g] On Behalf Of Christopher Wood [christopher_w...@pobox.com] Sent: Saturday, 29 October 2011 11:30 AM To: openldap-technical@openldap.org Subject: Re: Searches causing disk writes Perhaps use iotop while you do a big search? On Sat, Oct 29, 2011 at 11:11:44AM +0800, Adam Wale wrote: > Hi, > >

Re: Searches causing disk writes

2011-10-29 Thread Christopher Wood
2011 11:30 AM > To: openldap-technical@openldap.org > Subject: Re: Searches causing disk writes > > Perhaps use iotop while you do a big search? > > On Sat, Oct 29, 2011 at 11:11:44AM +0800, Adam Wale wrote: > > Hi, > > > > Thanks for the response, unf

Re: Searches causing disk writes

2011-10-29 Thread Philip Guenther
On Sat, 29 Oct 2011, Christopher Wood wrote: > On Sat, Oct 29, 2011 at 08:22:38PM +0800, Adam Wale wrote: > > iotop shows me that the slapd process is doing the writing, I'm trying > > to identify what exactly it's writing, and if there's a way I can > > prevent it How do memory writes to mmap'e

Re: Searches causing disk writes

2011-10-30 Thread devzero2000
On Thu, Oct 27, 2011 at 5:27 AM, Adam Wale wrote: > Hi, > > ** ** > > I’m observing an issue where a large number of searches against an > openldap server results in a large amount of disk writes occurring. > > ** ** > > I have 10 hosts performing the same workload, the hosts are running

RE: Searches causing disk writes

2011-11-09 Thread Adam Wale
Subject: Re: Searches causing disk writes On Sat, 29 Oct 2011, Christopher Wood wrote: > On Sat, Oct 29, 2011 at 08:22:38PM +0800, Adam Wale wrote: > > iotop shows me that the slapd process is doing the writing, I'm trying > > to identify what exactly it's writing, a

Re: Searches causing disk writes

2011-11-10 Thread Meike Stone
2011/11/10 Adam Wale : > For anyone that was interested in the fix for this, moving to shared memory > resolved the issue. Hello Adam, we had the same problem and could it solve the same way. Sorry, I haven't seen this thread.. Do you have tried to mount your partition where the data directory

Re: Searches causing disk writes

2011-11-10 Thread Howard Chu
Meike Stone wrote: 2011/11/10 Adam Wale: For anyone that was interested in the fix for this, moving to shared memory resolved the issue. Hello Adam, we had the same problem and could it solve the same way. Sorry, I haven't seen this thread.. Do you have tried to mount your partition where t