diff options
Diffstat (limited to 'test/lib/aux.sh')
| -rw-r--r-- | test/lib/aux.sh | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/lib/aux.sh b/test/lib/aux.sh index ca9406383..58439d62d 100644 --- a/test/lib/aux.sh +++ b/test/lib/aux.sh @@ -1206,6 +1206,16 @@ remove_dm_devs() { # Throttle down performance of kcopyd when mirroring i.e. disk image throttle_sys="/sys/module/dm_mirror/parameters/raid1_resync_throttle" throttle_dm_mirror() { + # if the kernel config file is present, validate whether the kernel uses HZ_1000 + # and return failure for this 'throttling' when it does NOT as without this setting + # whole throttling is pointless on modern hardware + local kconfig="/boot/config-$(uname -r)" + if test -e "$kconfig" ; then + grep -q "CONFIG_HZ_1000=y" "$kconfig" 2>/dev/null || { + echo "WARNING: CONFIG_HZ_1000=y is NOT set in $kconfig -> throttling is unusable" + return 1 + } + fi test -e "$throttle_sys" || return test -f THROTTLE || cat "$throttle_sys" > THROTTLE echo ${1-1} > "$throttle_sys" |