> Il giorno 5 mar 2019, alle ore 21:13, stan <upaitag@xxxxxxxx> ha scritto: > > On Tue, 5 Mar 2019 17:42:12 +0100 > Paolo Valente <paolo.valente@xxxxxxxxxx> wrote: > >> At any rate, let me take this opportunity for updating you guys on >> what happened in the last months. >> >> First, server-side, I discovered that the techniques used to guarantee >> I/O bandwidth to clients, containers and virtual machines easily >> result in throughput losses of up to 90%! So I improved BFQ so as to >> make it an alternative solution that brings this loss down to just >> 10%. Full details in this very recent (today :) ) short article: >> http://ow.ly/vsrW50mBAGl >> >> Second, PC-side, I've pushed new commits for the dev version of BFQ >> (I'll submit these commits for the production version, probably >> tomorrow; so they'll probably be all available from 5.2). These >> commits provide the following, measurable performance boost: >> - up to ~80% faster application start-up times in the presence of >> background workloads >> - ~150% throughput boost in one of the nastiest workloads for BFQ the >> one generated by dbench. The throughput is finally on pr with any >> other I/O scheduler, and most likely equal to the maximum possible >> throughput reachable with this test >> - elimination of the 18% loss of throughput occurring with only >> random reads, w.r.t. to none as I/O scheduler; there is no loss any >> more; > > This sounds great! Thanks for the update. Looking forward to 5.2. If you are curious, here's the performance you will enjoy from 5.2, and, partially, already from 5.1 (tested through the dev version of bfq on top of a 4.19): https://algo.ing.unimo.it/people/paolo/disk_sched/results.php Unless 5.2 will be as broken as 5.0 currently is! ;) Thanks, Paolo > _______________________________________________ > kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx
