<quote who="Pierangelo Masarati">

Gavin Henry wrote:

...

OK, thanks. Do you have any reference for custom monitoring examples?

Not sure what you mean. By "custom monitoring" I mean that pieces of code may register callbacks in back-monitor to enrich the monitor entries with dynamically generated data. Right now, the only code that exploits this functionality is back-bdb/back-hdb, but it's something we use intensively for custom modules we develop (the monitor database can be proficiently used as an interface for non-persistent interaction with the DSA).

Ah, right. Sorry, I misunderstood custom as something done via configuration in the front end, not via callbacks.

With reference to code, see servers/slapd/back-bdb/monitor.c (the API is implemented in servers/slapd-back-monitor/init.c).

Will do, sounds very useful indeed.

What back-bdb/hdb publishes by means of this API is not documented, AFAIK; it might be worth mentioning somewhere in the docs, as this monitoring could be quite useful for tuning. Nothing that cannot be accessed thru db_stat, the advantage is access via LDAP protocol.

Exactly, sounds very useful and one that I can investigate and document in the Monitoring section, with implementation examples (not code) in the Tuning and Maintenance sections of our guide.

A recent addition was the capability to monitor what unindexed attributes were used in searches.

Yeah, I commented on that previously. Nice.

Gavin.

p.

Ing. Pierangelo Masarati OpenLDAP Core Team

SysNet s.r.l. via Dossi, 8 - 27100 Pavia - ITALIA http://www.sys-net.it

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Office: +39 02 23998309 Mobile: +39 333 4963172 Email: pierangelo.masarati@sys-net.it

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