Re: Question about search performance

[Howard Chu <hyc@symas.com>]

Ferne Quinlan wrote:
> Hi,
>
> Is there someone use openldap on windows?I found the query performance on
> windows is too bad, Any solution or relevant official documents?

This has always been true. In our tests, while OpenLDAP on Windows is usually 
over 10x faster than e.g. ActiveDirectory, it is still 2x slower than OpenLDAP 
on Linux.

See the benchmark results presented last month at LDAPCon.
 http://lanyrd.com/2013/ldapcon/sckyhr/

The last time we tested, in 2007, OL on Windows was 3x slower than on Linux, 
so our Windows support has improved significantly from then till now, but the 
fact remains that Windows is an inferior OS. Inefficient network stack, 
inefficient device driver stack, inefficient kernel interface for mutex 
primitives, etc. etc. etc.

If you're using Windows in a serious server deployment you've wasted at least 
50% of your budget, in terms of performance/$$.

--
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/