I have a need to record the total physical times spent on I/O requests during some period. My basic idea is to record the start time when the request is issued somewhere in a disk driver and the finish time somewhere in an interrupt routine. Can any one please tell me where are the right places to insert these hooks to collect these timing information for SCSI and IDE disks? I have only a little information about the driver structure in FreeBSD. Maybe this is not a good idea.
Thanks for any enlightenment. -Zhihui To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
