Hi Benjamin, It's interesting that the memory shrinkers are being invoked without memory pressure. I'll try to understand it better, maybe I'm missing something.
I guess the before/after memory sizes for the test are swapped? i.e., to alleviate potential memory pressure the VM's memory had been _increased_ from 44G to 64G? and not the opposite. And maybe it's not necessary to trace/reproduce the exact load with fio; perhaps one of fio's default/generic modes ([rand]r/w/rw) w/ a variation of queue depth might hit a similar pattern on iowait. (If that helps w/ one less step to do :) cheers, Mauricio -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1898786 Title: Issue with bcache bch_mca_scan causing huge IO wait To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1898786/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
