This is expected behaviour with FileMaker Server v12 - the connections persist for around 3 minutes. See this thread where it was discussed:
I'm not experiencing any issues with the WPE freezing up though - might need more details from the logs etc.
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I had a read of that post, and I this part has me thinking it may be a different issue?
Also, if I “re-hit” the same script I do not see any additional php connections
I am often getting multiple connections appear (as seen in the screenshot provided).
The performance issues do seem to only appear when there are multiple connections showing up for a file. There have been times when I have seen the same user 6 times on a file.
Is there anything in particular that I should be looking for in the logs?
After looking through settings further, it seems that the issue isn't directly related to the number of connections displayed in the admin console.
I think the performance issues are related to the FileMaker PHP installation in IIS.
Does anybody have suggestions on the best settings to increase performance of the FileMaker FastCGI PHP installation?
The current settings I have are:
IIS 7, FileMaker PHP settings, FastCGI
Full Path: C:\Program Files\FileMaker\FileMaker Server\Web Publishing\publishing-engine\php\php-cgi.exe
Environment Variables: (Collection)
Instance MaxRequests: 10000
Max Instances: 30
Monitor changes to file:
Standard error mode: TerminateProcess
Activity Timeout: 140
Idle Timeout: 600
Queue Length: 2000
Rapid Fails PerMinute: 10
Request Timeout: 90
These settings were changed to these values yesterday, and it did seem to improve performance slightly, but there are still issues.
Any help would be appreciated. Clients are getting very frustrated with the issues.