Even with dmdelay injected latencies, I still observe occasional test failures on shared storage (e.g. VMs). The extra 10% tolerance resolves these intermittent failures on my system. Signed-off-by: David Disseldorp <ddiss@xxxxxxx> --- tests/btrfs/282 | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tests/btrfs/282 b/tests/btrfs/282 index 42d992a6..6649623a 100755 --- a/tests/btrfs/282 +++ b/tests/btrfs/282 @@ -95,9 +95,8 @@ speed=$($BTRFS_UTIL_PROG scrub status --raw $SCRATCH_MNT |\ tee -a $seqres.full |\ $AWK_PROG '$1 == "Rate:" {sub(/\/s/, "", $2); print $2}') -# We gave a +- 10% tolerance for the throttle -if [ "$speed" -gt "$(( $target_speed * 11 / 10 ))" -o \ - "$speed" -lt "$(( $target_speed * 9 / 10))" ]; then +# We gave a +- 20% tolerance for the throttle +if (( speed > target_speed * 12 / 10 || speed < target_speed * 8 / 10 )); then echo "scrub speed $speed Bytes/s is not properly throttled, target is $target_speed Bytes/s" fi -- 2.35.3