LDAP: Example of Processing Time Histogram

The UnboundID Directory Server provides a breakdown of LDAP operations that been processed by the server. Below is an example of the processing time histogram from the directory server monitor:

Screen Shot 2012 12 07 at 8 36 42 AM

The following ldapsearch example shows how to retrieve information about search operations (this example uses the legacy OpenLDAP ldapsearch syntax):

ldapsearch -h ldap.example.com -p 389 -D cn=RootDN -x \
        -b 'cn=processing time histogram,cn=monitor' -LLL \
        '(&)' searchOpsTotalCount searchOpsPercent \
dn: cn=processing time histogram,cn=monitor
searchOpsTotalCount: 490186258
searchOpsPercent: Less than 1ms: 99.7966%
searchOpsPercent: Between 1ms and 2ms: 0.1073%
searchOpsPercent: Between 2ms and 3ms: 0.0159%
searchOpsPercent: Between 3ms and 5ms: 0.0164%
searchOpsPercent: Between 5ms and 10ms: 0.0294%
searchOpsPercent: Between 10ms and 20ms: 0.0334%
searchOpsPercent: Between 20ms and 30ms: 0.0007%
searchOpsPercent: Between 30ms and 50ms: 0.0000%
searchOpsPercent: Between 50ms and 100ms: 0.0000%
searchOpsPercent: Between 100ms and 1000ms: 0.0002%
searchOpsPercent: At least 1000ms: 0.0000%
searchOpsAggregatePercent: Less than 1ms: 99.7966%
searchOpsAggregatePercent: Between 1ms and 2ms: 99.9039%
searchOpsAggregatePercent: Between 2ms and 3ms: 99.9198%
searchOpsAggregatePercent: Between 3ms and 5ms: 99.9362%
searchOpsAggregatePercent: Between 5ms and 10ms: 99.9657%
searchOpsAggregatePercent: Between 10ms and 20ms: 99.9991%
searchOpsAggregatePercent: Between 20ms and 30ms: 99.9997%
searchOpsAggregatePercent: Between 30ms and 50ms: 99.9998%
searchOpsAggregatePercent: Between 50ms and 100ms: 99.9998%
searchOpsAggregatePercent: Between 100ms and 1000ms: 100.0000%
searchOpsAggregatePercent: At least 1000ms: 100.0000%

About Terry Gardner

Terry Gardner was a leading directory services architect with experience with many large scale directory services installations and messaging server installations, and was a Subject Matter Expert in the field of Directory Services and Solaris (operating system) performance. Mr. Gardner also participated in the open-source software community. Mr. Gardner passed away in December, 2013.
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