diff options
Diffstat (limited to 'common/scripts/is-cpu-isolated.sh')
| -rwxr-xr-x | common/scripts/is-cpu-isolated.sh | 108 |
1 files changed, 63 insertions, 45 deletions
diff --git a/common/scripts/is-cpu-isolated.sh b/common/scripts/is-cpu-isolated.sh index ddbebbf..2805659 100755 --- a/common/scripts/is-cpu-isolated.sh +++ b/common/scripts/is-cpu-isolated.sh @@ -16,6 +16,11 @@ STRESS_DURATION=5000 NON_ISOL_CPUS="0" #CPU not to isolate, zero will always be there as we can't stop ticks on boot CPU. RESULT="PASS" +# Global variables +old_count=0 +new_count=0 + + # ROUTINES debug_script=1 isdebug() { @@ -244,37 +249,72 @@ isolate_cpu() { for_each_isol_cpu create_dplane_cpuset } -# routine to get CPU isolation time -get_isolation_duration() { - isdebug echo "" - isdebug echo "" - isdebug echo "Capture Isolation time" - isdebug echo "----------------------" +count_interrupts_on_isol_cpus() { + temp=($*) + count=0 - isdebug echo "No. of samples requested:" $SAMPLE_COUNT", min isolation required:" $MIN_ISOLATION - isdebug echo "" + for i in `echo $ISOL_CPU | sed 's/,/ /g'`; do + count=$(( $count + ${temp[i]} )) + done - isdebug dump_interrupts + echo $count +} + +# process interrupts +refresh_interrupts() { + # Get interrupt count for all CPUs + interrupts=($(total_interrupts "ALL")) - # Get initial count - new_count=$(total_interrupts $ISOL_CPU) - isdebug echo "initial count: " $new_count + # Find total count of all interrupts on isol CPUs + new_count=$(count_interrupts_on_isol_cpus ${interrupts[@]}) + [ $1 ] && isdebug echo "Counts for all CPUs: ${interrupts[@]}, total isol-cpus interrupts: $new_count" +} + +# Sense infinite isolation +sense_infinite_isolation() { + # process interrupts + refresh_interrupts "print" old_count=$new_count - T2="$(date +%s)" + + # Get time as a UNIX timestamp (seconds elapsed since Jan 1, 1970 0:00 UTC) + T1="$(date +%s)" + while [ $new_count -eq $old_count ] do - new_count=$(total_interrupts $ISOL_CPU) + # process interrupts + refresh_interrupts + ps h -C stress -o pid > /dev/null if [ $? != 0 ]; then - T=$(($(date +%s)-$T2)) - echo "Tick didn't got updated for stress duration:" $T - echo "Probably in infinite mode, quiting test" - echo "test_case_id:Min-isolation "$MIN_ISOLATION" secs result:"$RESULT" measurement:"$T" units:secs" + T2="$(date +%s)" + T=$(($T2-$T1)) + + echo "Quitting. Infinite Isolation detected: No interrupts for last: $T seconds" + echo "test_case_id:Min-isolation $MIN_ISOLATION secs result:$RESULT measurement:$T units:secs" exit fi done + # Interrupted, dump interrupts + isdebug dump_interrupts 1 +} + +# routine to get CPU isolation time +get_isolation_duration() { + isdebug echo "" + isdebug echo "" + isdebug echo "Capture Isolation time" + isdebug echo "----------------------" + + isdebug echo "No. of samples requested:" $SAMPLE_COUNT", min isolation required:" $MIN_ISOLATION + isdebug echo "" + + isdebug dump_interrupts + + # Sense infinite isolation + sense_infinite_isolation + isdebug echo "count locked: " $new_count # Get time as a UNIX timestamp (seconds elapsed since Jan 1, 1970 0:00 UTC) @@ -288,43 +328,21 @@ get_isolation_duration() { do let x=x+1 - # Interrupted, dump interrupts - isdebug dump_interrupts 1 - T1=$T2 isdebug echo "Start Time in seconds: ${T1}" # sometimes there are continuous ticks, skip them by sleeping for 100 ms. sleep .1 - # get count again after continuous ticks are skiped - old_count=$(total_interrupts $ISOL_CPU) - new_count=$old_count - + # Sense infinite isolation + sense_infinite_isolation T2="$(date +%s)" - while [ $new_count -eq $old_count ] - do - new_count=$(total_interrupts $ISOL_CPU) - ps h -C stress -o pid > /dev/null - if [ $? != 0 ]; then - T=$(($(date +%s)-$T2)) - echo "Tick didn't got updated for stress duration:" $T - echo "Probably in infinite mode, quiting test" - echo "test_case_id:Min-isolation "$MIN_ISOLATION" secs result:PASS measurement:"$T" units:secs" - exit - fi - done - - isdebug echo "sampling over: " $new_count - - T2="$(date +%s)" - isdebug echo "End Time in seconds: ${T2}" - T=$(($T2-$T1)) - isdebug echo "Time in seconds: " - echo $T + isdebug echo "End Time in seconds: ${T2}, time diff: $T" isdebug echo "" + + # Calculations to show results let AVG=AVG+T if [ $T -lt $MIN_ISOLATION -a $RESULT="PASS" ]; then |