Re: [389-users] memory allocator - calloc of 4098 elems of 4 bytes failed; OS error 12 (Cannot allocate memory)

[Rich Megginson <rmeggins@xxxxxxxxxx>]

On 01/04/2011 11:27 PM, mahao wrote:

Hi,

                Thanks for your letter.

                This fedora-ds version is :

nsslapd-versionstring: Fedora-Directory/1.0.4.

 

               And platform :

LSB Version:    :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch

Distributor ID: RedHatEnterpriseServer

Description:    Red Hat Enterprise Linux Server release 5.5 (Tikanga)

Release:        5.5

Codename:       Tikanga

 

Linux esjirp64.emea.nsn-net.net 2.6.18-164.6.1.el5 #1 SMP Tue Oct 27 11:28:30 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

 

                I have pasted config.ldif of my fedora-ds server in attachment.

                You said its ran out of memory, but the next day morning after fedora-ds was crashed, I checked cacti monitor of memory,  memory and cpu usage rate was on a normal level , far from exhausted.

                And after I restart fedora-ds server 2 hours without changing any configuration, there was no response from ldap server but the process was running and 389 port was listened. And this time no errors were written into error log. I had to restart it again and it have been working fine from then on.

               

                Do you have any idea of this?

                Thank you for your advice.       

Not sure.  Looks like all of your cache settings are the default values.  I suppose it could be a memory leak.
I suggest upgrading to 389 1.2.7.5 available from EPEL.  Even if that does not solve your problem, it will be much easier to support.

 

 

Best Regards

 

Ma Hao

 

 

From: Rich Megginson [mailto:rmeggins@xxxxxxxxxx]
Sent: 2011年1月5日 1:07
To: mahao
Cc: 389-users@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: memory allocator - calloc of 4098 elems of 4 bytes failed; OS error 12 (Cannot allocate memory)

 

On 12/24/2010 12:15 AM, mahao wrote:

 

Hi all,

          Fedora-ds was down for some reason,

          And  I  got these logs:

 

 

[23/Dec/2010:18:59:32 +0200] - libdb: User-specified malloc function returned NULL

[23/Dec/2010:18:59:32 +0200] - id2entry error 12

[23/Dec/2010:18:59:32 +0200] - id2entry get error 12

[23/Dec/2010:18:59:32 +0200] - next_search_entry db err 12

[23/Dec/2010:18:59:32 +0200] memory allocator - calloc of 4098 elems of 4 bytes failed; OS error 12 (Cannot allocate memory)

The server has probably allocated all available virtual memory. To solve

this problem, make more virtual memory available to your server, or reduce

one or more of the following server configuration settings:

  nsslapd-cachesize        (Database Settings - Maximum entries in cache)

  nsslapd-cachememsize     (Database Settings - Memory available for cache)

  nsslapd-dbcachesize      (LDBM Plug-in Settings - Maximum cache size)

  nsslapd-import-cachesize (LDBM Plug-in Settings - Import cache size).

Can't recover; calling exit(1).

 

 

 

      It looks like no more available virtual memory to use, so should I set a lager nsslapd-dbcachesize?

      I don't know if it will down again, and please give me some advice . its important to me. Thanks a lot

What version of fedora-ds or 389-ds-base?
What platform?

This usually means you have run out of memory.  The usual thing is to reduce your cache sizes (as specified above).  Start with nsslapd-dbcachesize as the minimum.  Set nsslapd-cachememsize to be large enough to cache all of your entries, but no larger.

 

 

 

 

 

BS

 

Ma Hao

 

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