On 10/07/2011 11:56 AM, Justin Gronfur wrote: > Hello all, > I need your expertise... please help me! (Disclaimer: I am a relative > newcomer to 389ds) > > I'm running a Java application that keeps user authentication, > permissions, and preferences in ldap. And I'm currently load testing > this application (using Jmeter, 15 concurrent threads, no think time) > and I'm getting really good performance most of the time. However every > 5 minutes (from the time I started ldap), 389's CPU usage will spike to > 375% (400% = all 4 processors at 100%, 389 normally sits around > 15-20%). These pauses last for between 20 - 30 seconds (proportionate > to the load I'm throwing at it) during which our application will just > sit. Since I'm just running the same set of requests at it constantly, > there isn't anything different in terms of our application during those > times, which points to 389 as the culprit (or possibly some glassfish > ldap pool problem). > > Some info: > Glassfish 3.1 final on Java 1.6.0_26 (64 bit server VM) > 389-Directory/1.2.9.10 B2011.250.1455 > Fedora 15 64-bit (also observed on Centos 5.4 64-bit) > > Have any of you run into this problem? Do you have any possible config > changes I could try? Any possible leads at all? Are you using replication? Is this a replication master? Is your load tester doing delete operations? > Thanks, > Justin > -- > 389 users mailing list > 389-users@lists.fedoraproject.org > https://admin.fedoraproject.org/mailman/listinfo/389-users
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