Re: Openldap2.4.16 performance issue

["Dieter Kluenter" <dieter@dkluenter.de>]

"Singh, Devender (GE Capital, consultant)" <Devender.Singh2@ge.com> writes:

> I agree with you. Please suggest me what to do for resolution of this issue.

Frankly, this is simple unix system administration.
A few questions:
1. hardware related
   - type of storage 
   - raid level, if any
   - file system of disk(s)
   - type of network, 100MB, 1G, 10G

2. is this host running on a virtual machine or on bare metal.
   - if virtual machine,
   -- what type

-Dieter


> "Singh, Devender (GE Capital, consultant)" <Devender.Singh2@ge.com> writes:
>
>> Please find the below answers:
>>
>> [root@abc openldap-data-ge_cw]# du -sh *.bdb
>> 3.6M    br.bdb
>> 72K     cn.bdb
>> 32K     displayName.bdb
>> 234M    dn2id.bdb
>> 104K    gr.bdb
>> 419M    id2entry.bdb
>> 56K     mail.bdb
>> 1.4M    objectClass.bdb
>> 2.9M    pf.bdb
>> 212K    pr.bdb
>> 72K     sn.bdb
>> 72K     uid.bdb
>
> I have seen the problems you describe before. Although a configured
> cache size of 250M and a database size of some 660M is not sufficient,
> it still is not such a bottleneck. To my experience a heavy cpu load
> is most likely based on heavy disk operations.
> If moving the transaction logs onto a separate disk didn't solve it,
> look for other concurrent read/write operations. Check whether the
> logs report constantly deadlocks.
> In some cases a journaling file system reduced performance. I
> experienced rather bad results with xfs.
>
> -Dieter

-- 
Dieter Klünter | Systemberatung
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