https://bugs.openldap.org/show_bug.cgi?id=9692
Issue ID: 9692
Summary: Insertion rate in large groups slows unexpectedly
Product: OpenLDAP
Version: 2.5.7
Hardware: All
OS: All
Status: UNCONFIRMED
Keywords: needs_review
Severity: normal
Priority: ---
Component: slapd
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 843
--> https://bugs.openldap.org/attachment.cgi?id=843&action=edit
slapd.conf
Observed during jmeter tests[1] that perform ldapmod operations, adding members
into a group. The insertion speed decreases unexpectedly, as the size of the
group increases.
A test run starts 10 jmeter threads, each doing 1000 mods = 100,000 members
added altogether to a group.
At the beginning of the test, throughput is approximately 200/s. At the end,
the mod rate slows down to < 10/s.
Multival and sortval are enabled (slapd.conf attached):
sortvals member
multival member 500,3
*** Server info
Ubuntu20
2 CPU Cores
4GB RAM
symas-openldap-server 2.5.7-1focal1
*** To verify multival is enabled:
```
data/dc=example,dc=com# mdb_stat -s id2v .
Status of id2v
Tree depth: 1
Branch pages: 0
Leaf pages: 1
Overflow pages: 0
Entries: 746316
```
[1][ldap-load-gen](https://gitlab.symas.net/symas-public/ldap-load-gen)
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