On Fri, 02 Aug 2019, 16:24:10 +0200, Marco Calistri wrote:
Il 01/08/19 09:38, Marco Calistri ha scritto:
Il 31/07/19 11:04, Dominique Leuenberger ha scritto:
Please note that this mail was generated by a script. The described changes are computed based on the x86_64 DVD. The full online repo contains too many changes to be listed here.
Please check the known defects of this snapshot before upgrading: https://openqa.opensuse.org/tests/overview?distri=opensuse&groupid=1&version=Tumbleweed&build=20190730
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Packages changed: ImageMagick (7.0.8.53 -> 7.0.8.56) Mesa (19.1.2 -> 19.1.3)
SNIP
Hello,
After completing the update (zypper ref && zypper dup) I noticed the following error on console:
dracut: FAILED: /usr/lib/dracut/dracut-install -D /var/tmp/dracut.AzXLCU/initramfs -N i2o_scsi --kerneldir /lib/modules/5.2.3-1-default/ -m bfq_iosched
Would like to know if it is a known problem and if are there any solutions.
Thanks and regards,
Well, rebooting I get BFQ scheduler working again, so this is not a problem.
In the meanwhile I noticed the new scheduler KYBER and I would like if someone could be so kind to point me on a very brief but specific URL where is being explained which scheduler is better in terms of I/O, for a mechanical disk (HDD).
I'm trying the three available schedulers "on-the-fly", noticing very small differences at first glance:
1- echo "none"|sudo tee /sys/block/sda/queue/scheduler 2- echo "mq-deadline"|sudo tee /sys/block/sda/queue/scheduler 3- echo "kyber"|sudo tee /sys/block/sda/queue/scheduler 4- echo "bfq"|sudo tee /sys/block/sda/queue/scheduler
cat /sys/block/sda/queue/scheduler [none] mq-deadline kyber bfq
...
Please start here: <https://lwn.net/Articles/720675/>
Thanks and regards,
HTH, cheers. l8er manfred