21 December 07 - 00:13"Commercial Open Source"?

Jeff Gould of Interop News asks the question, "Is commercial open source really open?". His answer is, roughly, probably not. Not that he thinks you shouldn't use it if it works for you. He's just saying you should look for the really good software at the right price with terms you can live with. A message we at Symas Corporation agree with. (more)

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12 December 07 - 12:49Eight Problems Solved by OpenLDAP

Preparing for a discussion with an enterprise prospect, we got asked for eight problems solved by OpenLDAP and, by derivation, Symas. This was in comparison to other directory server technologies. It was more challenging than I originally expected. (more)

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06 December 07 - 11:12A view on the recent Sun Open Source "moves"

I guess we can derive from recent behavior that Sun goes Open Source to get inexpensive programmers for their products. The source is open but the projects are governed (controlled) by Sun ... or else. (more)

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03 December 07 - 05:08AD and ADAM Performance: UPDATE

OK, this is the update promised a few entries ago. This is a reworked version of the previous post with corrected numbers and a couple of graphs. Enjoy.

As promised in the white paper, Symas's benchmarking team has been diligently benchmarking OpenLDAP (the new 2.4.6 release that just came out of beta ... plus a little pixie dust from HEAD that will be in 2.4.7) against both Active Directory (AD) and Active Directory Application Mode (ADAM) directory technologies from Microsoft. This is being done on an AMD Celestica A8440 with four Opteron 875s (dual 2.2GHz cores) and 16GB DDR333 RAM. (By the way, big thanks to our friends in AMD's Open Source Support team who arranged to make this machine available for these tests!The Barcelona recently arrived so we have a hot new toy!) All the runs were done using 64-bit mode.

Punchline: at 5,000,000 (5M) entries, OpenLDAP 2.4.6+ delivered 20,179 authentications a second, ADAM delivered 5,424 and AD did 216. The 1,000,000 (1M) entry runs were 23,273 for OpenLDAP, 5,738 for ADAM, and 4,662 for AD.

Howard's nice charts will be added later. (more)

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