Ok. tnx for your suggestion.
br
Sasa
.
On Sat, Apr 20, 2013 at 10:16 AM, devzero2000 pinto.e...@gmail.com wrote:
Just for Info, you should take a look to the tuned daemon and
setting a consistent profile for your workload. It can help a lot.
Best
2013/4/19, Saša-Stjepan Bakša
Just for Info, you should take a look to the tuned daemon and
setting a consistent profile for your workload. It can help a lot.
Best
2013/4/19, Saša-Stjepan Bakša ssba...@gmail.com:
Ok. I see your point and lesson is learned. Will do as suggested.
On Fri, Apr 19, 2013 at 6:07 PM, Howard
Quanah Gibson-Mount wrote:
--On Thursday, April 18, 2013 3:59 PM + Chris Card ctc...@hotmail.com
wrote:
Maybe MDB performance relative to BDB degrades as the database get
bigger. From your wiki page: This particular client has 25,208 entries
in their LDAP database. My test database has
Quanah Gibson-Mount wrote:
--On Thursday, April 18, 2013 8:18 PM + Chris Card ctc...@hotmail.com
wrote:
I'll give that a try. I had perhaps been taking the advice given in the
slapd-mdb man page too seriously:
Heh, yes, it seems so. ;) With writemap, you definitely do not want to
exceed
Date: Fri, 19 Apr 2013 00:03:30 -0700
From: h...@symas.com
To: qua...@zimbra.com; ctc...@hotmail.com; openldap-technical@openldap.org
Subject: Re: How to improve performance with MDB backend?
Quanah Gibson-Mount wrote:
--On Thursday, April 18, 2013
On 19/4/2013 2:00 μμ, Chris Card wrote:
I tried reducing the maxsize, but it made no difference to the performance.
So I'm still at the point where writes to BDB are roughly 4 times faster than
writes to MDB.
Any more suggestions?
Could it be possibly related to the OS / filesystem used?
First test with your sugestions.
I am using Phyton program writen by me to add data to server.
Server is Centos 6.2 based (hardware described in my first post)
Python runs on separeate dual core PC with 1Gb connection to servers.
Servers are configured as N-way Multymaster
Test startTest stop
On 18/4/2013 6:16 μμ, Quanah Gibson-Mount wrote:
For me, MDB writes are a minimum of 65 times faster than writes with
BDB/HDB, even when BDB/HDB use an SHM key.
Can you please share your compilation options (or spec file, if
applicable) and test setup complete configuration so interested
For second test I have changed I/O scheduler only
Nothing changed in terms of adding speed!
Test startTest stop Test durationNum usersUser/sec
19.4.2013 19.4.2013min 5759,00742837128,99
14:37:45 16:13:34 sec 95,98333
[root@spr1 /]# cat
Saša-Stjepan Bakša wrote:
First test with your sugestions.
I am using Phyton program writen by me to add data to server.
Server is Centos 6.2 based (hardware described in my first post)
Python runs on separeate dual core PC with 1Gb connection to servers.
Servers are configured as N-way
Saša-Stjepan Bakša wrote:
How do you measure or compare speed?
I have a Python program which add a predefined number of users (1mil and each
user consists of 8 DNs and 3 alias DNs) and for Modify test I have also Python
program which modify 1 attribute with random value under one DN changed
Ok. I see your point and lesson is learned. Will do as suggested.
On Fri, Apr 19, 2013 at 6:07 PM, Howard Chu h...@symas.com wrote:
You really need to learn something more about system administration; you
clearly don't know what to investigate but this is all fundamental sysadmin
I am also interested in this thread. I've been doing some comparison tests
between MDB and BDB using openldap 2.4.35, and find that the BDB backend is
consistently much faster for writes. For example, modifying 1 DNs and
changing one attribute using ldapmodify takes about 80 seconds with an
--On Thursday, April 18, 2013 2:27 PM + Chris Card ctc...@hotmail.com
wrote:
I am also interested in this thread. I've been doing some comparison
tests between MDB and BDB using openldap 2.4.35, and find that the BDB
backend is consistently much faster for writes. For example, modifying
Date: Thu, 18 Apr 2013 08:16:03 -0700
From: qua...@zimbra.com
To: ctc...@hotmail.com; openldap-technical@openldap.org
Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 2:27 PM + Chris Card ctc...@hotmail.com
--On Thursday, April 18, 2013 3:29 PM + Chris Card ctc...@hotmail.com
wrote:
Did you make the changes to the DB flags for MDB that I noted the other
day? For me, MDB writes are a minimum of 65 times faster than writes with
BDB/HDB, even when BDB/HDB use an SHM key.
Yes. I have these
Date: Thu, 18 Apr 2013 08:50:23 -0700
From: qua...@zimbra.com
To: ctc...@hotmail.com; openldap-technical@openldap.org
Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 3:29 PM + Chris Card ctc...@hotmail.com
--On Thursday, April 18, 2013 3:59 PM + Chris Card ctc...@hotmail.com
wrote:
Maybe MDB performance relative to BDB degrades as the database get
bigger. From your wiki page: This particular client has 25,208 entries
in their LDAP database. My test database has over 3 million entries
Date: Thu, 18 Apr 2013 09:13:42 -0700
From: qua...@zimbra.com
To: ctc...@hotmail.com; openldap-technical@openldap.org
Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 3:59 PM + Chris Card ctc...@hotmail.com
--On Thursday, April 18, 2013 4:57 PM + Chris Card ctc...@hotmail.com
wrote:
I'm using openldap 2.4.35.
olcDbMaxSize: 429496729600
and that's the size of the file on the disk too:
-rw--- 1 ldap ldap 429496729600 Apr 18 16:52 data.mdb
-rw--- 1 ldap ldap 8192 Apr 18 17:52
Date: Thu, 18 Apr 2013 10:13:10 -0700
From: qua...@zimbra.com
To: ctc...@hotmail.com; openldap-technical@openldap.org
Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 4:57 PM + Chris Card ctc...@hotmail.com
--On Thursday, April 18, 2013 5:21 PM + Chris Card ctc...@hotmail.com
wrote:
I routinely test with DBs in the range of 3 million to 6 million entries,
and it is always substantially faster than bdb/hdb.
du -c -h data.mdb returns 16G
So drop your maxsize to 32GB from 400GB. Clearly you
Date: Thu, 18 Apr 2013 10:41:40 -0700
From: qua...@zimbra.com
To: ctc...@hotmail.com; openldap-technical@openldap.org
Subject: RE: How to improve performance with MDB backend?
--On Thursday, April 18, 2013 5:21 PM + Chris Card ctc...@hotmail.com
wrote:
I routinely test with DBs
--On Thursday, April 18, 2013 8:18 PM + Chris Card ctc...@hotmail.com
wrote:
I'll give that a try. I had perhaps been taking the advice given in the
slapd-mdb man page too seriously:
Heh, yes, it seems so. ;) With writemap, you definitely do not want to
exceed actual RAM.
--Quanah
Well, hardware is described in my first post. Now I am waiting for HP
blades and SSD array :-) so if you need/want some tests to be done it can
be arranged (in idle time).
Br
Sasa
On Mon, Apr 15, 2013 at 7:09 PM, Michael Ströder mich...@stroeder.comwrote:
Saša-Stjepan Bakša wrote:
Now I
How do you measure or compare speed?
I have a Python program which add a predefined number of users (1mil and
each user consists of 8 DNs and 3 alias DNs) and for Modify test I have
also Python program which modify 1 attribute with random value under one DN
changed sequentially from 1 to 1mil)
--On Tuesday, April 09, 2013 2:07 PM +0200 Saša-Stjepan Bakša
ssba...@gmail.com wrote:
Tnx. I will add what you suggest and try to run modify test with that. I
didn't done that already because my mdb database is overflowed. I have
set it to 100GB but it wasn't enough. I am not sure why. Are
I am sorry replaying directly. I didn't check who was in TO field.
OK I will try Re24. Tnx again.
Sasa
On Tue, Apr 9, 2013 at 4:15 PM, Quanah Gibson-Mount qua...@zimbra.comwrote:
--On Tuesday, April 09, 2013 2:07 PM +0200 Saša-Stjepan Bakša
ssba...@gmail.com wrote:
Tnx. I will add what
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