Hello, On Sat, 21 Sep 2019, David T-G wrote:
Malcolm, et al -- % The only thing I would suggest is picking the best i/o scheduler to use % for the SD card...
Thanks! Sounds good. Um, how do I select a scheduler? :-)
RTFM: /usr/src/linux/Documentation/block/switching-sched.txt and /usr/src/linux/Documentation/kernel-parameters.txt (for elevator=) # cat /sys/block/sd?/queue/scheduler # echo cfq > /sys/block/sdX/queue/scheduler E.g. I have: # cat /sys/block/sd?/queue/scheduler [noop] deadline cfq noop deadline [cfq] [..] sda is an ssd, the rest is rotating rust. Oh, and I boot with: # cat /proc/cmdline [..] elevator=cfq [..] and then have ==== ssddevs=( /dev/disk/by-id/ata-... ) for dev in "${ssddevs[@]}"; do d=$(readlink "$dev" | sed 's@\.\./\.\./@@') echo noop > /sys/block/${d}/queue/scheduler done ==== in an early local boot script. HTH, -dnh -- Going on a year now, I ain't had nothing twixt my nethers weren't run on batteries -- Kaylee, Serenity -- To unsubscribe, e-mail: opensuse-support+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-support+owner@opensuse.org