I had to revert to first patch set : new patch consumes 30% CPU
on my system (or 6% global CPU on Atom D510@1.66GHz).
I let it ran a few minutes from 13h56 to 14h00, then when seeing
abnormal CPU consumption, I reverted it.
Taz (Cédric L.M.)
Le 28/02/2015 13:39, Taz a écrit :
Hi Jean,
Besides it looked strange, it didn't bother me enough so I stopped
monitoring and kind of gave it up too...
But I'll certainly give the new patch a try (and restart monitoring),
and give you feedback of course.
Thanks a lot !
Taz (Cédric L.M.)
Le 28/02/2015 11:14, Jean Delvare a écrit :
Hi Taz,
On Thu, 13 Nov 2014 15:36:32 +0100, Taz wrote:
(sorry I just saw my reply still was in my drafts, don't know why...)
Indeed : my current bash version is 4.3.11
Although I don't have line 585 in my fancontrol script
I can apply the the patch (lines 497 & 536 for fancontrol v0.7)
The "patch" command can apply patch files with offsets just fine.
I also gave it a try without the wait lines and not sending to
background the previous
sleep command the wait was waiting for anyway (useless ?)
Not sending sleep in the background reportedly caused delays or
undesirable behavior on system suspend or shutdown on some systems. See:
http://www.lm-sensors.org/changeset/4443/lm-sensors/branches/lm-sensors-3.0.0/prog/pwm/fancontrol
=> Mem consumption seems to be the same in all cases, we'll see in the
long run...
I discussed the issue with the upstream bash maintainer, but he claims
that the implementation is correct and required for Posix compliance.
My own tests were confusing (sometimes I could reproduce the issue,
sometimes not) so I couldn't reach a definitive conclusion, and
ultimately I forgot about it / gave up on it.
Meanwhile someone contributed a trick to the healthd script which may
work just fine here too. It avoids both the call to an external command
and the use of wait. Can you please revert the previous patch and give
a try to this one instead?
---
prog/pwm/fancontrol | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- lm-sensors.orig/prog/pwm/fancontrol 2014-11-17
09:16:14.657054963 +0100
+++ lm-sensors/prog/pwm/fancontrol 2015-02-28 11:03:32.958562604
+0100
@@ -545,8 +545,7 @@ function UpdateFanSpeeds
then # if fan was stopped start it using a safe value
echo $minsa > $pwmo
# Sleep while still handling signals
- sleep 1 &
- wait $!
+ read -t 1 -N 0
fi
fi
echo $pwmval > $pwmo # write new value to pwm output
@@ -584,6 +583,5 @@ while true
do
UpdateFanSpeeds
# Sleep while still handling signals
- sleep $INTERVAL &
- wait $!
+ read -t $INTERVAL -N 0
done
Thanks,
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