On Sun, 2007-03-25 at 23:51 -0400, Alan D. Brunelle wrote: > Ming Zhang wrote: > > from btt user guide > > > > "Q2Q which measures the time between queue traces in the system. > > This provides some idea as to how quickly IOs are being handed to > > the block IO layer." > > > > does this mean the time between queuing N request and N > > +1 request? > > > > Hi Ming - > > This is the average time between the Q traces being logged. We take the > difference between each succeeding Q trace, and divide the sum by the total.
so like block layer idle indicator. maybe a similar D2D will be a nice device indicator as well. > > Alan > > thanks! > > > > Ming > > > > > > - > > To unsubscribe from this list: send the line "unsubscribe linux-btrace" in > > the body of a message to [EMAIL PROTECTED] > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > - > To unsubscribe from this list: send the line "unsubscribe linux-btrace" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
