On 2023/12/7 17:50, David Disseldorp wrote:
btrfs/282 fails intermittently under some circumstances. This patchset adds dmdelay to make storage latencies more uniform and slightly increases throttled rate tolerances.
My concern using dm_delay is, is the delay per-merged-bio or something else? If the delay is only per-bio (after merge), then I'm afraid it would not be good enough. The bio plug we use in scrub can have much higher chance to result a difference in the scrub speed. We may want a delay behavior which can take bio size into consideration at least. Thanks, Qu
common/dmdelay | 13 ++++--------- tests/btrfs/282 | 43 +++++++++++++++++++++++++++++-------------- tests/btrfs/282.out | 2 +- tests/xfs/311 | 2 +- 4 files changed, 35 insertions(+), 25 deletions(-)
