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2025-05-22 - 11:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Thu May 22, 2025 00:41:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1453424996452,9cyclictest3881033-21cups-browsed19:12:340
1453424996231,7cyclictest1592010-21ssh23:32:420
145342599584,45cyclictest1498649-21ssh21:22:361
145342599584,45cyclictest1498649-21ssh21:22:361
1453425995042,5cyclictest453-21systemd-logind00:00:031
145342499494,36cyclictest1616935-21ssh00:07:320
1453424994737,5cyclictest0-21swapper/019:57:280
1453426994638,5cyclictest1618493-21grep00:10:012
1453426994638,5cyclictest1557431-21munin-plugin-st22:45:012
1453424994634,9cyclictest1630508-21sendmail_mailtr00:27:440
145342699455,33cyclictest1588202-21ssh23:27:312
1453424994534,8cyclictest151ktimers/020:07:330
1453426994435,6cyclictest1493164-21systemd-run21:15:022
1453426994434,6cyclictest1611519-21cups-browsed00:01:252
1453426994335,5cyclictest1538100-21sendmail_mailst22:17:412
1453426994335,5cyclictest1457945-21systemd-run19:25:012
1453426994334,5cyclictest422-21dbus-daemon20:35:012
1453425994332,8cyclictest1637324-21sh00:40:021
1453426994234,5cyclictest698-21cron23:35:012
145342699423,31cyclictest1534423-21ssh22:12:392
1453425994234,5cyclictest1468399-21awk20:00:011
145342499424,32cyclictest1505555-21ssh21:32:320
1453424994225,13cyclictest1467049-21latency_hist19:55:020
1453426994133,5cyclictest1628430-21munin-plugin-st00:25:012
1453426994132,4cyclictest0-21swapper/223:12:342
1453426994131,6cyclictest436-21gpm23:49:312
1453425994133,3cyclictest0-21swapper/100:22:411
1453425994132,3cyclictest0-21swapper/122:07:381
1453424994134,4cyclictest1543140-21systemd-run22:25:020
1453424994134,4cyclictest1543140-21systemd-run22:25:020
1453424994131,6cyclictest151ktimers/023:37:340
1453424994125,10cyclictest12450irq/32-eth022:17:350
1453426994032,5cyclictest1637329-21systemd-run00:40:022
1453426994032,5cyclictest1498003-21head21:22:222
1453426994032,5cyclictest1498003-21head21:22:222
1453426994030,7cyclictest3881033-21cups-browsed22:51:202
1453426994030,6cyclictest422-21dbus-daemon19:12:332
145342699402,30cyclictest1541588-21ssh22:22:372
145342699402,30cyclictest1541588-21ssh22:22:372
1453425994034,3cyclictest0-21swapper/123:37:271
1453425994030,6cyclictest421-21avahi-daemon21:29:041
1453425994028,9cyclictest1545640-21unixbench-2d22:27:511
1453425994028,9cyclictest1545640-21unixbench-2d22:27:511
145342499407,27cyclictest12450irq/32-eth022:27:370
145342499407,27cyclictest12450irq/32-eth022:27:370
1453424994026,7cyclictest1637280-21munin-plugin-st00:40:010
1453424994016,16cyclictest12450irq/32-eth000:22:390
1453426993933,3cyclictest0-21swapper/223:20:012
1453426993932,3cyclictest0-21swapper/222:40:012
1453426993930,5cyclictest1513213-21unixbench-2d21:42:432
1453425993931,5cyclictest422-21dbus-daemon20:25:011
1453425993931,5cyclictest1548115-21aten2.4-expect22:32:261
1453425993930,6cyclictest1574365-21unixbench_multi23:07:461
1453424993931,5cyclictest422-21dbus-daemon20:50:010
1453424993917,14cyclictest12450irq/32-eth023:17:320
145342699384,26cyclictest1609912-21ssh23:57:392
145342699383,26cyclictest1509072-21ssh21:37:322
1453426993831,4cyclictest1546720-21latency_hist22:30:022
1453426993831,4cyclictest1546720-21latency_hist22:30:022
1453426993830,5cyclictest1468435-21systemd-run20:00:012
1453426993829,5cyclictest955-21mta-sts-daemon23:07:402
1453426993828,7cyclictest1634413-21cron00:35:012
1453426993828,6cyclictest1460929-21systemd-run19:35:012
1453425993831,4cyclictest1553971-21kthreadd22:40:011
1453425993830,5cyclictest1600735-21cron23:45:001
1453425993830,5cyclictest1600735-21cron23:45:001
1453426993731,2cyclictest0-21swapper/220:05:022
1453426993730,4cyclictest1525163-21latency_hist22:00:022
1453425993729,5cyclictest1589943-21latency_hist23:30:021
1453425993725,9cyclictest1523945-21timerwakeupswit21:57:431
1453424993729,4cyclictest0-21swapper/000:12:260
1453424993726,8cyclictest1533600-21aten_r2power_en22:12:220
145342699366,9cyclictest171rcu_preempt00:17:382
145342699363,25cyclictest1620277-21ssh00:12:312
1453426993630,3cyclictest0-21swapper/220:25:012
1453426993628,5cyclictest422-21dbus-daemon21:20:012
1453426993628,5cyclictest422-21dbus-daemon21:20:012
1453426993627,6cyclictest1473438-21fschecks_count20:17:242
1453425993629,5cyclictest957-21mta-sts-daemon22:52:371
1453425993628,5cyclictest1625137-21munin-run00:20:011
1453425993628,5cyclictest1535941-21ssh22:15:031
1453425993627,6cyclictest1491780-21mailstats21:12:411
1453425993627,6cyclictest1480434-21systemd-run20:40:011
1453424993627,7cyclictest1611421-21/usr/sbin/munin00:00:020
1453426993529,3cyclictest0-21swapper/219:10:012
1453426993527,5cyclictest1561005-21systemd22:50:012
1453426993527,5cyclictest1561005-21systemd22:50:012
1453426993526,6cyclictest3881033-21cups-browsed23:50:382
1453426993526,4cyclictest0-21swapper/223:02:352
1453425993528,3cyclictest0-21swapper/122:57:401
1453425993528,3cyclictest0-21swapper/122:57:401
1453425993525,7cyclictest698-21cron20:10:011
145342599352,27cyclictest1519892-21ssh21:52:321
145342499356,23cyclictest12450irq/32-eth023:42:360
145342499356,23cyclictest12450irq/32-eth023:42:360
1453424993529,4cyclictest1494329-21/usr/sbin/munin21:17:260
1453424993529,4cyclictest1494329-21/usr/sbin/munin21:17:260
1453424993526,6cyclictest151ktimers/021:22:330
1453424993526,6cyclictest151ktimers/021:22:330
1453424993525,8cyclictest1475931-21sh20:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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