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Re: make test got stuck at Testing for slave slapd...

--On Thursday, April 03, 2003 6:41 PM -0500 Igor Brezac <igor@ipass.net> wrote:

On Thu, 3 Apr 2003, Quanah Gibson-Mount wrote:


Just an FYI... I've seen extremely poor performance results using Solaris
9.  Sun made a major change in the way in which Solaris handles threads
between 8 and 9.  If you are looking to deploy a production OpenLDAP
service, I suggest using Solaris 8 instead of 9.

Hmm.. I do not find this to be correct. I just ran a DirectoryMark benchmark (100,000 entry dataset, 20 simultaneous clients, 100,000 different search samples) on Solaris 9 - fairly recent patches, (1 CPU 440Mhz Ultrasparc IIi, 512MB RAM) against Openldap 2.1.16 (tpool patch, latest CVS SASL, Sleepycat 4.1.25). I am able to get over 800 searches per second and with more tweaking I can probably do better.

This number is probably not indicative measure of a real world
application, but it does not indicate performance problems with Solaris 9.
I tested Solaris 8 awhile back and it performed roughly the same.


I unfortunately have never seen the DirectoryMark's tool results have any resemblance to reality. You gave me the same sort of answer when I was seeing massive problems with Solaris 8, with a rate of 4-6 queries/second. After hiring Howard Chu to work on the system, in which he found the exact same results, an extensive set of patches were put in to OpenLDAP and related pieces of software (cyrus-sasl, heimdal, BDB, etc) before we got our current performance of 66/queries a second. I have absolutely no faith in your results.

What I do have faith in, is having the same software set up on two identical systems, with the exception of one running Solaris 9 with the latest patches, and the other running Solaris 8 with the latest patches, and running the same types of query sets against both systems. The end results do not match, with Solaris 9 having a markedly worse performance result. It has been about a month since I last did this test, and I'd be willing to do it again to see if any change has occurred, but it has been fairly consistent that Solaris 9's performance is worse.


Quanah Gibson-Mount
Senior Systems Administrator
ITSS/TSS/Computing Systems
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html