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2025-08-29 - 12:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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 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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Fri Aug 29, 2025 00:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16119499910727,7cyclictest131rcu_preempt22:05:032
16119499910727,7cyclictest131rcu_preempt22:05:022
1611949999931,8cyclictest131rcu_preempt20:05:022
1611942997167,2cyclictest0-21swapper/022:40:020
161194999661,17cyclictest1616275-21sshd20:31:402
161194999653,13cyclictest1615012-21munin-run20:10:002
161194999653,13cyclictest1615012-21munin-run20:10:002
161194999652,15cyclictest1628812-21munin-run00:35:012
161194999651,14cyclictest1619446-21munin-run21:35:002
1611949996421,39cyclictest1620145-21latency_hist21:45:022
161194999642,12cyclictest1623555-21sshd22:50:402
161194999633,13cyclictest1623341-21munin-run22:50:002
161194999632,16cyclictest1624641-21munin-run23:15:012
161194999632,16cyclictest1624641-21munin-run23:15:012
161194999632,15cyclictest1612939-21munin-run19:30:002
161194999632,13cyclictest1612448-21munin-run19:20:012
161194999632,13cyclictest1612448-21munin-run19:20:012
1611949996319,39cyclictest272-21dbus-daemon21:25:002
161194999622,14cyclictest1615230-21sshd20:11:402
161194999622,13cyclictest1622055-21munin-run22:25:012
161194999612,13cyclictest1619205-21munin-run21:30:022
161194999611,17cyclictest1621239-21sshd22:07:592
161194999602,13cyclictest1619737-21munin-run21:40:012
1611949996019,35cyclictest272-21dbus-daemon21:05:012
161194999592,11cyclictest1627231-21cron00:05:012
161194999592,11cyclictest1627231-21cron00:05:002
161194999592,11cyclictest1620463-21cron21:54:592
1611949995916,13cyclictest1627748-21munin-run00:15:002
161194999591,15cyclictest1612687-21munin-run19:25:002
161195499583,12cyclictest37-21ksoftirqd/320:20:003
161194999583,16cyclictest1617332-21cron20:55:012
161194999583,16cyclictest1617332-21cron20:55:002
1611949995822,30cyclictest1629050-21cron00:40:012
161194999582,14cyclictest272-21dbus-daemon22:15:002
1611949995811,41cyclictest0-21swapper/223:10:002
161194599588,34cyclictest1627982-21kworker/u8:200:20:021
161195499575,5cyclictest131rcu_preempt22:50:013
161194999572,13cyclictest1613206-21munin-run19:35:022
161194999562,14cyclictest1617095-21munin-plugin-st20:50:002
161194999562,13cyclictest1627006-21munin-run00:00:022
161194999561,14cyclictest1615806-21munin-plugin-st20:25:002
1611954995543,8cyclictest37-21ksoftirqd/300:00:003
161195499553,15cyclictest37-21ksoftirqd/321:25:013
161194999552,8cyclictest1613446-21modprobe19:40:002
161194999552,16cyclictest1623851-21latency_hist23:00:002
161194999552,13cyclictest1622569-21munin-run22:35:012
161194999552,11cyclictest1620736-21run-parts22:00:002
1611949995515,7cyclictest1618633-21sshd21:17:402
161194999542,17cyclictest1616842-21munin-plugin-st20:45:002
161194999542,12cyclictest1618157-21munin-run21:10:012
161194999541,12cyclictest363-21snmpd23:45:162
161194999541,12cyclictest363-21snmpd23:26:032
1611949995410,4cyclictest0-21swapper/219:53:152
1611949995410,4cyclictest0-21swapper/219:53:152
161194999538,5cyclictest0-21swapper/221:15:002
1611949995323,25cyclictest306-21in:imuxsock20:20:002
161194999532,12cyclictest1628405-21latency_hist00:25:022
1611949995320,30cyclictest30-21ksoftirqd/220:35:392
1611949995317,31cyclictest306-21in:imuxsock20:00:002
1611949995316,33cyclictest30-21ksoftirqd/223:25:022
161195499523,9cyclictest37-21ksoftirqd/323:15:003
161195499523,9cyclictest37-21ksoftirqd/323:15:003
1611954995233,13cyclictest235-21systemd-journal23:50:003
161195499523,11cyclictest37-21ksoftirqd/323:25:013
161194999524,10cyclictest0-21swapper/223:19:592
161194999522,12cyclictest1613976-21munin-run19:50:002
1611949995220,29cyclictest30-21ksoftirqd/222:45:002
161194999521,12cyclictest363-21snmpd00:17:482
161194999521,12cyclictest1624140-21munin-run23:05:012
161194999514,10cyclictest272-21dbus-daemon20:30:012
161194999513,19cyclictest1621771-21modprobe22:20:002
161194999512,12cyclictest272-21dbus-daemon23:35:002
161194999511,14cyclictest1626216-21munin-run23:45:012
161194999511,10cyclictest1611992-21latency_hist19:10:012
1611945995134,13cyclictest1-21systemd23:40:001
1611945995134,13cyclictest1-21systemd23:40:001
161195499509,7cyclictest131rcu_preempt20:45:003
161195499503,7cyclictest37-21ksoftirqd/320:30:013
161195499503,10cyclictest37-21ksoftirqd/322:45:003
1611949995035,12cyclictest1622285-21sshd22:28:402
161195499493,10cyclictest37-21ksoftirqd/322:10:003
161195499491,5cyclictest0-21swapper/322:40:003
1611954994915,9cyclictest37-21ksoftirqd/322:55:023
161194999499,6cyclictest1611938-21cyclictest21:00:002
161194999492,14cyclictest1613728-21systemd-run19:45:012
161194999492,10cyclictest1622797-21cron22:40:012
1611945994929,15cyclictest235-21systemd-journal22:25:001
161195499485,8cyclictest37-21ksoftirqd/322:05:023
161195499485,8cyclictest37-21ksoftirqd/322:05:023
161195499483,13cyclictest37-21ksoftirqd/323:10:003
161194999483,7cyclictest1612139-21modprobe19:15:002
161194999482,16cyclictest1625930-21munin-run23:40:002
161194999482,16cyclictest1625930-21munin-run23:40:002
1611949994811,5cyclictest0-21swapper/221:50:032
1611949994811,5cyclictest0-21swapper/221:50:022
161194999481,13cyclictest1628527-21sshd00:29:402
161195499476,8cyclictest37-21ksoftirqd/300:10:003
161195499476,11cyclictest37-21ksoftirqd/321:30:003
161195499473,10cyclictest37-21ksoftirqd/321:20:023
161195499471,9cyclictest1613979-21modprobe19:50:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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