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I get following message in my System Log

Dec  9 14:09:44 XXXXXXXXXX DirectoryService[26]: Potential VM growth in DirectoryService since client PID: 213, has 9500 open references when the warning limit is 500.

Should I be concern? Is there anything that I need to do?

alexus
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  • In ServerAdmin -> Web -> Sites ->Virtual Domain (Site) -> Web Services do you have any SACLs set for users or groups? If you do and you take them out does that help. – Jim B Dec 09 '09 at 19:35
  • i dont have/use/run "Web" service. – alexus Jan 07 '10 at 16:31

1 Answers1

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After digging in Apple's Support forums I found a link to an article by David LeBer about this issue:

According to posts in Apple’s OS X Server forum (here, here, and the tail end of here) it looks like this nasty problem involves either servermgrd and/or DirectoryService. The number of open reference continuously grows until it renders your server unusable – usually not considered a good thing.

He provides some pointers to discussion forums and a "bandaid" via a script that looks for the infamous "Potential VM" notice on the server logs and restarts the affected service.

For future questions, it would be easier to help you if you provide more details about the platform you are running: OS version, roles of the server, number of users, concurrency...

itorres
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