Peter Bosch and Sape J. Mullender
Faculty of Computer Science/SPA
University of Twente, Netherlands
We have found this integration quite useful: algorithm bottlenecks have been found through Patsy that could have led to performance degradations in PFS. Off-line simulators are simpler to analyze compared to on-line file-systems because a work load can repeatedly be replayed on the same off-line simulator. This is almost impossible in on-line file-systems since it is hard to provide similar conditions for each experiment run. Since simulator and file-system are integrated (hence, use the same code), experiment results from the simulator have relevance in the real system.
This paper describes the cut-and-paste framework, the instantiation of the framework to PFS and Patsy and finally, some of the experiments we conducted in Patsy.
Download the full text of this paper in ASCII (54,338 bytes) and POSTSCRIPT (366,957 bytes) form.
To Become a USENIX Member, please see our Membership Information.