On 2008-07-21 21:56, Török Edwin wrote: > On 2008-07-21 21:45, Alan D. Brunelle wrote: > >> Hi Edwin - >> >> With the patches sent out today (kernel & application), you can then use >> the updated script attached here. It only asks for getrq & sleeprq >> traces - so it will cut down a lot, but most likely there will still be >> a lot of getrq's (in particular). >> >> Will now have some time to look at the more general issue concerning how >> to see the effects of the sleeprq's... >> >> > > I think it would be useful to somehow "dump" the contents of both queues when a sleep occurs, at least the rw_flags, the pid, and the size of the operation. Maybe that could be done somehow via blktrace on-demand? [it already has all the relayfs communication ...] P.S.: I tried to blktrace all queueing events and save that to the disk, but no matter what buffer size I used, it kept telling me it has dropped events :( So the only way to know the contents of the queue is for the kernel to give it to me on-demand. Best regards, --Edwin > Thanks Alan. > > I have been using a slightly modified version of your qsg.py script, I > want the time delta between > [snip] -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
