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2025-09-16 - 05:28

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 Tue Sep 16, 2025 00:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38423629910197,2cyclictest0-21swapper/022:35:030
3842362997868,6cyclictest131rcu_preempt22:55:020
3842370997730,10cyclictest235-21systemd-journal20:50:012
3842370997730,10cyclictest235-21systemd-journal20:50:012
384237599702,14cyclictest3858663-21sshd00:21:153
384237599671,12cyclictest3853189-21sshd22:38:163
384237599651,11cyclictest3846688-21sshd20:32:173
384237599651,11cyclictest3846688-21sshd20:32:163
3842375996334,25cyclictest3857279-21sed23:55:023
384237599632,3cyclictest131rcu_preempt20:15:033
3842375996236,23cyclictest3843060-21sshd19:21:163
384237599623,14cyclictest3846216-21munin-run20:25:013
384237599623,14cyclictest3846216-21munin-run20:25:013
384237599622,14cyclictest48-21kcompactd021:36:313
384237599622,14cyclictest48-21kcompactd021:36:313
384237599622,13cyclictest3851411-21munin-run22:05:003
384237599621,13cyclictest3842565-21munin-run19:15:013
3842366996215,10cyclictest23-21ksoftirqd/121:10:021
3842366996215,10cyclictest23-21ksoftirqd/121:10:021
3842375996122,34cyclictest235-21systemd-journal20:28:163
384237599612,12cyclictest3857915-21munin-run00:10:003
384237599612,10cyclictest3844848-21sshd19:55:163
384237599611,17cyclictest3848285-21munin-plugin-st21:05:013
384237599611,17cyclictest3848285-21munin-plugin-st21:05:003
384237599611,14cyclictest3858426-21munin-run00:20:013
384237599611,13cyclictest3856838-21modprobe23:48:173
384237599611,12cyclictest3846941-21sshd20:37:163
384237599611,12cyclictest3845180-21munin-run20:05:013
384237599605,6cyclictest3847981-21sshd20:58:153
384237599605,14cyclictest235-21systemd-journal20:20:003
3842375996034,22cyclictest37-21ksoftirqd/321:35:023
384237599602,6cyclictest3854517-21cron23:05:003
384237599602,17cyclictest235-21systemd-journal20:45:003
384237599601,12cyclictest3853474-21sshd22:43:283
384237599601,12cyclictest3853474-21sshd22:43:273
384237599601,12cyclictest3847501-21munin-run20:50:013
384237599601,12cyclictest3847501-21munin-run20:50:013
384237599592,6cyclictest3850881-21munin-run21:55:013
384237599592,6cyclictest3850881-21munin-run21:55:003
3842366995911,13cyclictest3853255-21systemctl22:40:001
3842362995939,16cyclictest235-21systemd-journal21:50:000
3842362995836,16cyclictest272-21dbus-daemon19:40:000
384237599572,6cyclictest3858934-21cron00:30:013
384237599572,6cyclictest3858934-21cron00:30:003
384237599572,13cyclictest3854787-21true23:10:003
384237599572,12cyclictest3857330-21sshd23:56:173
384237599572,12cyclictest3857330-21sshd23:56:163
384237599571,9cyclictest3852423-21sshd22:20:163
384237599571,11cyclictest363-21snmpd22:27:163
384237599571,11cyclictest363-21snmpd22:27:153
384237599563,9cyclictest272-21dbus-daemon23:40:013
384237599563,5cyclictest3856062-21cron23:35:003
384237599562,13cyclictest3845433-21munin-run20:10:013
384237599562,11cyclictest363-21snmpd19:19:423
384237599561,8cyclictest3852937-21sshd22:33:163
3842375995613,37cyclictest1-21systemd22:10:013
384237599561,12cyclictest3853929-21ls22:50:063
384237599561,11cyclictest3855011-21sshd23:13:333
3842366995635,16cyclictest235-21systemd-journal21:55:001
3842366995635,16cyclictest235-21systemd-journal21:55:001
384237599552,13cyclictest3855552-21sshd23:23:373
384237599552,11cyclictest3851916-21munin-run22:15:003
384237599551,8cyclictest3849572-21sshd21:29:163
384237599551,7cyclictest3847723-21sshd20:52:163
384237599551,16cyclictest3854225-21sshd22:58:173
384237599551,12cyclictest3844350-21sshd19:46:163
384237599551,11cyclictest1-21systemd21:50:003
3842375995510,39cyclictest272-21dbus-daemon21:20:013
3842366995538,14cyclictest235-21systemd-journal21:35:001
3842366995511,14cyclictest3855033-21munin-run23:15:001
3842362995537,14cyclictest1-21systemd20:45:020
3842362995533,16cyclictest235-21systemd-journal22:10:000
384237599542,5cyclictest3844117-21cron19:44:593
384237599542,16cyclictest3848763-21sshd21:10:163
384237599542,16cyclictest3848763-21sshd21:10:163
3842375995411,3cyclictest3851183-21sort22:00:013
384237599541,11cyclictest363-21snmpd23:44:423
384237599541,10cyclictest363-21snmpd22:18:183
384237599532,14cyclictest3855320-21sendmail-msp23:20:003
384237599532,10cyclictest235-21systemd-journal21:10:013
384237599531,12cyclictest3858216-21latency_hist00:15:013
384237599531,12cyclictest363-21snmpd19:27:093
384237599531,11cyclictest3857626-21sshd00:03:153
384237599531,11cyclictest3850343-21modprobe21:41:163
3842370995337,11cyclictest1-21systemd23:05:022
384237599523,7cyclictest412-21sshd00:34:143
384237599522,9cyclictest3843976-21latency_hist19:40:023
384237599521,10cyclictest363-21snmpd19:50:463
3842370995235,13cyclictest272-21dbus-daemon23:50:002
3842362995244,6cyclictest151rcuc/021:55:030
3842362995244,6cyclictest151rcuc/021:55:020
3842370995132,14cyclictest235-21systemd-journal19:20:012
3842362995141,7cyclictest12-21ksoftirqd/000:00:010
3842362995141,7cyclictest12-21ksoftirqd/000:00:000
384237599505,6cyclictest3842399-21grep19:10:013
384237599505,6cyclictest3842399-21grep19:10:013
384237599501,14cyclictest3843573-21modprobe19:32:503
384237599492,7cyclictest3854063-21sort22:55:023
384237599492,12cyclictest235-21systemd-journal23:30:013
3842375994919,27cyclictest37-21ksoftirqd/300:40:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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