94b9530cd9
Update io-scheduler rules for rootdisk based on performance analysis. Previous settings resulted in sm etcd failures when system was under I/O stress. Tune to improve latency of critical disk I/O (etcdserver), and responsiveness of kube-apiserver. Changes are to let slice_idle go back to default of 8 and to enable strict_guarantees. Test Plan PASS: Install system and confirm scheduler options PASS: I/O stress soak - verify no stability or performance issues PASS: Drbd-invalidate - verify successful resync Closes-Bug: 1953074 Change-Id: I2c42b8850e844f24f53013386c9838eac260bf30 Signed-off-by: Gerry Kopec <gerry.kopec@windriver.com>