Some more numbers have come in. Howard continued over the weekend
and into this morning. The last post was about benchmarking OpenLDAP
2.3.34 (OL) against Fedora Directory Server 1.0.4 (FDS). This post
gives a glimpse of OpenLDAP 2.3.34 against OpenDS 0.1-34 (ODS) on the
same hardware and software as FDS.
Authentication Rate
performance of OpenDS was much closer to FDS than we expected; OpenLDAP
was 3.7 - 3.9 times faster. OpenDS actually outperformed FDS at 2.5M
entries (by a little). Load times and Search rate (see earlier post)
were much worse (loading 247% - 265% the time for OL and 3.3 - 7.7
times slower search rate).
Oh yeah, Howard struggled to put
ApacheDS's Release 1.0.1 through its paces. Let's just say that we
agreed that enough was enough after a clean run at 250K. Load times -
OpenLDAP 45 seconds, ApacheDS 3,051 seconds. Search rate: 1,689
entries/sec. Authentication Rate: 632 auths/sec.
First,
OpenDS is to be congratulated on achieving almost as good
authentication rate performance with their current code level as Fedora
(descendant of iPlanet and Netscape's efforts) gets. We consider FDS
performance-equivalent with Red Hat Directory Server (RHDS), the
commercially supported Red Hat directory product and this bodes well
for the OpenDS team.
The less said about the ApacheDS numbers,
the better. The most important metric, Authentication Rate, was 4% of
OpenLDAP and 14% of FDS. We wish the project well but it's evident from
many of Howard's experiences with running this benchmark that there's
lots of work to do on the code. For example, the load time was obtained
using OpenLDAP's ldapadd tool, because using ApacheDS's bundled import
tool would have taken pretty much forever. (It was only able to load
83,000 entries in 62 minutes, and the load rate was asymptotically
approaching zero entries per second.) Remember, whatever else they do,
computers are supposed to be fast, faster than humans. At these speeds,
we could've carved the entry data by hand onto stone tablets faster
than ApacheDS could load them.
Here are the graphs for the
OpenDS versus OpenLDAP comparison. The OpenLDAP numbers are the same as
in the (updated) FDS benchmark posting. Click on the images for a
larger view.
Load Time
Note that smaller is better
Search Rate
Authentication Rate
... Marty and Howard
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