We are trying to track down performance problems on our server, and when running SPA or the performance monitor the counter for "File Control Bytes / Sec" sometimes skyrockets, typically about once every 10 minutes. For example, here were the 10 most recent readings:
1,503,153,186 143,153,675 8,491 7,617 7,865 6,372 104,897 7,739 8,560 7,191
Could the spikes be impacting our I/O performance (we are noticing users infrequently needing to wait a long time to access files)? Also, what exactly is File Control Bytes/Sec (beyond the unclear definition from MS: "all file system operations that are neither read nor write operations, including file system control requests and requests for information about device characteristics or status") ... do we need to worry about it?