Hi
I'm preparing new kernels 3.10.29 & 3.12.10, I'll release it during this weekend, these will be equipped with newest and fixed BFQv7r1, and will contain few other updated feature patches. I have none SSD to test with it, so I need help with testing: I ask you, JeanClaud Vanier, you that noticed and informed me about the performance issue with your Laptop and SSD, to try this new version 3.12.10, so you can confirm the issue has gone out Naturally, if others amongst You have SSD equipped HW should focus testing with these devices I'm collaborating with the BFQ staff, and below is the text that I received just this morning "Hi, after a great effort on both my and Arianna's side, we are proud to release a thoroughly tested BFQ-v7r1 after a relatively short time. The main bug we fixed in v7, which we found after noting some throughput anomalies with an SSD, also made a little additional miracle: this fix further reduced latencies in some cases where there were still margins for improvement. In fact, as you will see from the new version of the result page we just published, now BFQ achieves, e.g., the lowest-possible application start-up times with most of the background workloads considered in our tests. I strongly suggest you to have a look at these new results at the usual URL: http://algogroup.unimore.it/people/paolo/disk_sched/results.php The page now contains only plots, with BFQ compared against CFQ, DEADLINE and NOOP, and tests executed on many different devices. We are currently running latency tests also with video playing. We will publish results as soon a we collect them. The main bug we fixed in v7 is mainly technical in nature, so I prefer no to bore you on that in this email. If you are curious, have a look at the changelog. This time Arianna prepared even more patches: . BFQ-v7r1 is available for kernels from 3.0.0 . The patchset for 3.10.8+ is available as well (I remind you that some little modifications are needed in BFQ to let it work properly with this series of stable kernels) . All the incremental patches you can dream of are probably available (for 3.0.0 onward) I am really tired, so I hope I did not make some mistake somewhere. Apart from that, I do hope you will enjoy this revision of v7, Paolo" bye, NicCo
