Since a few weeks we have a really annoying issue with our file servers. After a few days, the defrag process (C:\windows\system32\dfrgifc.exe) kicks in and pegs all the CPUs to 100% (8 of them) bringing file access to a crawl.
Windows 2003 R2 SP2 in a Microsoft cluster (Active / Active) in a 2003 level Active Directory and connected through 2 Clariions SANs.
Process explorer shows the following:
Also when I check what the process is doing, it says "profiling" but I don't see any files read or written (no I/o activity).
I checked the following:
* no tasks is being scheduled through tasks scheduler
* no tasks is being scheduled through AT command
* no other programs are install to trigger a scheduled task
* virus scanner can't find anything
* boot optimize function is set to disabled
* prefetch is off
* index service is disabled
In order to avoid the issue, I renamed the file dfrgifc.exe to dfrgifc.exe.old and killed the process however I would like to have more input for this.
Any ideas would be appreciated.