i made a few changes to my script.. on one of my s7s it would start beeping and show 0 hash.. so i made the script reboot cgminer when that happens.. i dunno tho if it was internet or the pool.
just copy this in a file called hashcheck.sh in the /config folder of the s7 with permissions of 0744 in winscp. ssh in and run /config/hashcheck.sh &
to calculate the minhash value take the avg speed and times it by .75 this worked for me.
and set pwm to whatever you have your fan running at.. might need to be higher like 40 or 50.
#!/bin/sh
######adjust here
restart=21600 # 6 hours in seconds
minhash=290000 #min hash rate 2900.00 ghs without the decimal.
minfan=20 #min fan speed
maxfan=100 #max fan speed
mintemp=60 #min avg temp
maxtemp=65 #max avg temp
pwm=30 #starting pwm speed
#######
echo $(date) "| hashcheck monitor started. reboot every $restart seconds or if lower than $minhash " > /config/hashcheck.txt
echo $(date) "| tempcheck monitor started." >> /config/hashcheck.txt
restartcount=0
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
sed -i "/bitmain-fan-pwm/c\"bitmain-fan-pwm\" : \"$pwm\"," /config/cgminer.conf && \
/etc/init.d/cgminer.sh start > /dev/null
sleep 120
while true
do
T=$(cgminer-api stats | grep 'temp_avg] =>' | cut -c 18-)
T1=$(cgminer-api stats | grep 'temp1] =>' | cut -c 15-)
T2=$(cgminer-api stats | grep 'temp2] =>' | cut -c 15-)
T3=$(cgminer-api stats | grep 'temp3] =>' | cut -c 15-)
E=$(cgminer-api summary | grep 'Elapsed]' | cut -c 17-)
S=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')
HASH=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
if [ $T1 -gt "75" ] || [ $T2 -gt "75" ] || [ $T3 -gt "75" ] && [ $pwm -lt "100" ]; then
pwm=100
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed too hot: setting fan to 100 % $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
sed -i "/bitmain-fan-pwm/c\"bitmain-fan-pwm\" : \"$pwm\"," /config/cgminer.conf && \
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
fi
if [ $E -gt $restart ]; then
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| miner scheduled restart $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
/etc/init.d/cgminer.sh start > /dev/null
sleep 60
continue
fi
if [ -z "S$" ] || [ $S -eq "0" ]; then
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed low hash : $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
fi
if [ $S -lt $minhash ] && [ $E -gt "120" ]; then
echo $(date) "| rechecking in 120s low hash : $HASH $T1 $T2 $T3 DEG" >> /config/hashcheck.txt
sleep 120
S=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')
E=$(cgminer-api summary | grep 'Elapsed]' | cut -c 17-)
T=$(cgminer-api stats | grep 'temp_avg] =>' | cut -c 18-)
T1=$(cgminer-api stats | grep 'temp1] =>' | cut -c 15-)
T2=$(cgminer-api stats | grep 'temp2] =>' | cut -c 15-)
T3=$(cgminer-api stats | grep 'temp3] =>' | cut -c 15-)
HASH=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
if [ $S -lt $minhash ]; then
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed low hash : $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
else
echo $(date) "| recovered: $HASH MH/s $E seconds $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
fi
fi
if [ $T -lt $mintemp ] && [ $pwm -gt $minfan ] && [ $E -gt "120" ]; then
echo $(date) "| rechecking in 120s low temp : $HASH GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
sleep 120
S=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')
E=$(cgminer-api summary | grep 'Elapsed]' | cut -c 17-)
T=$(cgminer-api stats | grep 'temp_avg] =>' | cut -c 18-)
T1=$(cgminer-api stats | grep 'temp1] =>' | cut -c 15-)
T2=$(cgminer-api stats | grep 'temp2] =>' | cut -c 15-)
T3=$(cgminer-api stats | grep 'temp3] =>' | cut -c 15-)
HASH=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
if [ $S -lt $minhash ]; then
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed low hash : $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
else
if [ $T -lt $mintemp ] && [ $pwm -gt $minfan ]; then
pwm=$((pwm-2))
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed too cold: setting fan to $pwm % $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
sed -i "/bitmain-fan-pwm/c\"bitmain-fan-pwm\" : \"$pwm\"," /config/cgminer.conf && \
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
else
echo $(date) "| recovered: $HASH GH/s $E seconds $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
fi
fi
fi
if [ $T -gt $maxtemp ] && [ $pwm -lt $maxfan ] && [ $E -gt "120" ]; then
pwm=$((pwm+2))
restartcount=$((restartcount+1))
restarthash=$(cgminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed too hot: setting fan to $pwm % $restarthash GH/s $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
/etc/init.d/cgminer.sh stop > /dev/null
sleep 5
sed -i "/bitmain-fan-pwm/c\"bitmain-fan-pwm\" : \"$pwm\"," /config/cgminer.conf && \
/etc/init.d/cgminer.sh start > /dev/null
echo $(date) "| miner restarted $restartcount times: $restarthash GH/s $T1 $T2 $T3 DEG $T AVG , at $restarttime for $elapsedtime seconds" >> /config/hashcheck.txt
sleep 60
continue
else
echo $(date) "| normal operation: fan at $pwm % $HASH GH/s $E seconds $T1 $T2 $T3 DEG $T AVG" >> /config/hashcheck.txt
fi
sleep 60
done