I have this burning desire to create a threshold measurement that measures real user pain when disk latency is pronounced. I want to take a file of say 1's and 0's and write it to each drive (in windows) and partition in Unix/Linux and measure how long it takes. When it surpasses a threshold throw an alarm.
Is this possible with any probe? I'm new and just now examining iostat.
In our case (Solaris) I think I/O has become conjested system wide, while *individual* disk partitions are performing reasonably accoring to Solaris iostat. Not sure I have a sound theory and doing an actual file W/R to me would be one way to prove that point.
Anybody done such a thing?
Is there a probe that will let you execute a cmd line snippet, and measure the time it takes?
Thanks in advance,