In GNU\/Linux, currently there are three main disk I\/O schedulers available. They are called ‘CFQ’, ‘NOOP’ and ‘Deadline’<\/p>\n
And came upon another disk I\/O scheduler for GNU\/Linux called ‘BFQ’ (it’s actually based on the code of ‘CFQ’).<\/p>\n
The KMP is found in OBS home:tiwai:bfq\/bfq repo. It's currently built for openSUSE-FACTORY, openSUSE-13.1, SLE12, Leap and Kernel:HEAD kernels.<\/p>\n
http:\/\/download.opensuse.org\/repositories\/home:\/tiwai:\/bfq\/openSUSE-Leap\/<\/p>\n
#wget -c http:\/\/download.opensuse.org\/repositories\/home:\/tiwai:\/bfq\/openSUSE-Leap\/home:tiwai:bfq.repo to \/etc\/zypp\/repos.d<\/p>\n
Install the KMP
After installing the KMP, load bfq-iosched kernel module, and change the scheduler like:
# echo bfq > \/sys\/block\/sda\/queue\/scheduler<\/p>\n
If you want to make BFQ as default from the beginning, do like below:<\/p>\n
– Put "bfq-iosched" in $INITRD_MODULES in \/etc\/sysconfig\/kernel
– Run \/sbin\/mkinitrd once to rebuild initrd
– Add a boot parameter "elevator=bfq"<\/p>\n
Then the BFQ module will be loaded automatically and used as default
I\/O scheduler at the next reboot.<\/p>\n
Credits:
http:\/\/lists.opensuse.org\/opensuse-factory\/2014-06\/msg00007.html
https:\/\/lkml.org\/lkml\/2014\/5\/29\/411<\/p>\n","protected":false},"excerpt":{"rendered":"
In GNU\/Linux, currently there are three main disk I\/O schedulers available. They are called ‘CFQ’, ‘NOOP’ and ‘Deadline’ And came upon another disk I\/O scheduler for GNU\/Linux called ‘BFQ’ (it’s actually based on the code of ‘CFQ’). The KMP is … Continue reading