How can we improve the write performance for openldap? And, how to we debug or tune it?


On Fri, Dec 23, 2022 at 9:06 PM Bhanush Mehta <bhanush.mehta@flipkart.com> wrote:
Hi All,

We are seeing very slow MOD operations on our ldap (250 MB data dump), while using mdb (data.mdb is 6.4 Gb). The average MOD operation is going to 8-9 seconds.
We are seeing 1k disk ops and 6-7MB/s writes. The disk is 4096 IOPS Sata SSD, we have seen write speed to be 126 MB/s  generally.

The slapd version is slapd  (May 14 2022 18:35:44).

We the following olcDbIndex for eq: objectClass, entryCSN , entryUUID eq, uid , uidNumber , uniqueMember ,gidNumber , memberUid ,displayName ,cn ,sn , member, source , supervisor ,accountExpiryDate 

And, sortVals for memberUid and member.

Regards
Bhanush

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