Am 17.09.19 um 16:16 schrieb jocelyn fournier: >> Le 17 sept. 2019 à 16:07, pslawek83 <pslawe...@o2.pl> a écrit : >> >> Hi Everyone, just some quick follow up on this topic about MyRocks i >> started. It seems that there are some issues with debian9 and cfq scheduler >> when using rocks. Tested this on VM, not sure how virtualization is >> affecting this. Rocks is easily able to saturate 3 cpu cores with I/O wait >> and I/O throughput is very low in this config, even on fast SSD. >> >> This gets much better after switching to noop/deadline and best is to switch >> to Debian10 with mq-deadline. Then I/O wait drops to 0% and performance >> improves a lot. > > Just curious, is mq-deadline faster than none, even on fast SSD / NVME?
given that "none" is nowhere used and poorly testet proven by the data corruption issues as "mq" was introduced i wouldn't use it no matte rhow fast it is https://www.phoronix.com/scan.php?page=news_item&px=Linux-4.19.8-Released _______________________________________________ Mailing list: https://launchpad.net/~maria-discuss Post to : maria-discuss@lists.launchpad.net Unsubscribe : https://launchpad.net/~maria-discuss More help : https://help.launchpad.net/ListHelp
