CF10 worked for months, now crashes. How to solve the causes?

We had CF10 vying for months now without any problems. On Tuesday, I begin to hear talk of the CF instance crashing every morning. I restart the service and it works again for the day. Wednesday he broke down again, so I restart the service twice before it will start work. Thursday service died again. all my efforts to restart the service or reboot the server only to allow him to work for minutes at a time. He starts to work quickly as usual, then slows down, then really lag, then the query time-out errors and then blocks the CF instance again. on and off like that all day and still today.

I try to tweak some settings in CF Admin, but nothing seems to give lasting assistance. Server seems to work very well (a Windows Server running IIS). I get the General to work continuously, HTML pages, even during the worst behavior of CF. I checked my SQL Server as well and it works fine, no strange or overwhelming requests. I diverted the traffic to the staging server instead of the Live production server and after a few minutes the server goes down too. It is almost like a slow memory leak, but analysis on CF Admin of the server shows the use of the stable memory, no dramatic increase.

I'm not a guy to server admin super knowledgeable, especially since I am a CF coder, but I am responsible to keep this server running.

How to solve this?

What should I look for?

Any ideas what causes this behavior and all of a sudden starting to do that now?

Thanks for any input in advance.

Thanks to all who have contributed.

To all those who might read this in the future, to respond to some of the suggestions that precede:

  • No, there are no infinite loops. The error began last week and there had no code changes recently.
  • No, we had not upgraded from an earlier version of the CF.
  • This Tomcat IIS connection may have been relevant, it's a good thing for the future.
  • I've never had to the isapi_redirect.log
  • No, there are no scheduled task on the server.
  • No, there was no unusual network traffic to indicate an attack by denial of service or something similar.

We hired some people of domestic support of the server, and two other suggestions came.

1. ColdFusion use memory Java virtual has been questioned as a possible problem

2. a person noted a previous problem with multiple server instances, you try to run both the cause of conflict.

We also noticed that the CPU on the server usage was remaining constant at 50% usage and fortification to 100% several times a minute. This is particularly remarkable, because we were see it during a period of low traffic. We didn't used to use the processor on a CF server, but that seemed odd.

With these suggestions in mind, I voted delete CF10 installation and reinstall a new copy. I saved a copy of the settings Admin, uninstalled, deleted the previous folder and reinstalled. After reconfiguring connections to sources of data and parameters the Server Admin work even better than ever. It's for three days now and the server is still running smooth with full traffic and even faster than before. Still not entirely sure what was the exact cause, but this resettlement was a relatively painless step to take while it was very worth it. Also the CPU usage is now closer to 10% with occasional spikes higher but nothing more by about 80%.

Thanks a lot for helping me solve this problem.

Tags: ColdFusion

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