I understand why the trend of the bus is increasing, but was wondering why there are also decreases? When the number of processors goes from 5 to 7, the lock/unlock time decreases, is this just a coincidence?
HLAHat
Probably just a coincidence, yeah. There's not really enough data here to make any real conclusions, and I'm sure if this was done again the results would look different. But I wonder if anyone has speculative ideas or theories on what happened?
ChandlerBing
Some one brought this up in class. Prof. Kayvon said that it's real data and hence the observed dips in the graph.
yuel1
So I know in some cases the OS will do priority inversion to temporarily elevate the priority of processes holding critical locks, I wonder if the bus arbitrator also does the same thing to make sure the process holding critical locks has priority access to release the lock.
I understand why the trend of the bus is increasing, but was wondering why there are also decreases? When the number of processors goes from 5 to 7, the lock/unlock time decreases, is this just a coincidence?
Probably just a coincidence, yeah. There's not really enough data here to make any real conclusions, and I'm sure if this was done again the results would look different. But I wonder if anyone has speculative ideas or theories on what happened?
Some one brought this up in class. Prof. Kayvon said that it's real data and hence the observed dips in the graph.
So I know in some cases the OS will do priority inversion to temporarily elevate the priority of processes holding critical locks, I wonder if the bus arbitrator also does the same thing to make sure the process holding critical locks has priority access to release the lock.