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2026-05-17 - 19:48

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 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.
Unexpectedly long latencies may be caused by SMIs
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 Sun May 17, 2026 12:45:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
154267699862,13cyclictest1567921-21munin-run09:50:000
154267699851,38cyclictest1632981-21ssh12:06:510
1542676998232,15cyclictest1619176-21ssh11:37:580
1542676998232,15cyclictest1619176-21ssh11:37:570
1542676998214,24cyclictest16850irq/134-800000011:05:010
154267699821,40cyclictest1551441-21ssh09:15:100
1542676997834,13cyclictest1-21systemd11:00:000
1542676997728,12cyclictest1587604-21ssh10:30:590
154267699771,13cyclictest1605430-21modprobe11:08:570
1542676997626,11cyclictest1640501-21ssh12:22:470
1542676997527,13cyclictest1593881-21ssh10:44:400
1542676997523,9cyclictest1569620-21ssh09:53:340
1542676997227,11cyclictest1613346-21ssh11:25:240
1542676997227,11cyclictest1613346-21ssh11:25:230
1542676997014,50cyclictest16850irq/134-800000011:41:040
154267699692,41cyclictest1582139-21cron10:20:000
1542676996626,18cyclictest12-21ksoftirqd/012:15:000
1542676996624,33cyclictest12-21ksoftirqd/012:05:030
1542676996519,12cyclictest1642454-21ssh12:27:000
1542676996517,12cyclictest1584984-21ssh10:25:260
1542676996417,13cyclictest1591354-21ssh10:39:230
1542676996325,17cyclictest1571607-21ssh09:57:380
154267699629,31cyclictest16850irq/134-800000010:01:240
1542676996232,12cyclictest12-21ksoftirqd/010:25:000
154267699608,30cyclictest16850irq/134-800000011:54:420
1542676996016,34cyclictest12-21ksoftirqd/011:20:010
1542676996016,34cyclictest12-21ksoftirqd/011:20:000
154267699593,3cyclictest131rcu_preempt08:55:010
1542676995920,19cyclictest12-21ksoftirqd/012:20:020
1542676995919,19cyclictest12-21ksoftirqd/012:40:000
1542676995826,13cyclictest1548931-21ssh09:10:010
1542681995740,13cyclictest1-21systemd10:00:001
1542676995727,14cyclictest1553855-21ssh09:20:130
1542676995624,10cyclictest1560597-21ssh09:34:470
154267699561,51cyclictest1598582-21ssh10:54:330
1542685995547,5cyclictest1546012-21kworker/2:309:00:012
1542685995538,8cyclictest1560736-21kworker/2:211:35:382
1542685995538,8cyclictest1560736-21kworker/2:211:35:382
1542676995525,15cyclictest1565264-21ssh09:44:300
1542676995525,15cyclictest1565264-21ssh09:44:290
1542685995446,5cyclictest1560736-21kworker/2:211:05:032
1542685995445,6cyclictest1543691-21kworker/2:010:40:012
154268199545,6cyclictest1553496-21cron09:20:001
1542681995438,13cyclictest1-21systemd08:25:011
1542676995427,12cyclictest1549298-21ssh09:10:470
1542676995426,13cyclictest1575939-21ssh10:06:360
154267699542,42cyclictest0-21swapper/010:15:000
1542685995344,6cyclictest1543691-21kworker/2:009:27:592
1542685995344,5cyclictest1543691-21kworker/2:009:59:042
154267699531,37cyclictest1644649-21ssh12:31:370
154269099525,3cyclictest131rcu_preempt12:22:443
1542690995231,14cyclictest3467602-21systemd-journal09:55:003
1542685995244,5cyclictest1543691-21kworker/2:009:40:062
1542685995244,5cyclictest1543691-21kworker/2:009:40:052
1542676995221,15cyclictest1557347-21ssh09:27:450
154269099514,4cyclictest131rcu_preempt11:31:333
1542685995135,8cyclictest1620019-21kworker/2:011:50:302
1542685995124,10cyclictest1560736-21kworker/2:211:08:562
154268199515,3cyclictest131rcu_preempt09:45:001
154268199515,3cyclictest131rcu_preempt09:45:001
1542681995126,5cyclictest23-21ksoftirqd/111:40:011
1542681995126,5cyclictest23-21ksoftirqd/111:40:001
154269099506,4cyclictest131rcu_preempt11:22:353
154269099505,4cyclictest131rcu_preempt12:09:503
154269099505,4cyclictest131rcu_preempt11:13:593
154269099505,4cyclictest131rcu_preempt09:22:493
154269099505,3cyclictest131rcu_preempt09:17:403
1542690995024,5cyclictest37-21ksoftirqd/310:35:003
154269099502,3cyclictest131rcu_preempt11:00:023
1542685995043,4cyclictest1560736-21kworker/2:211:31:562
1542685995042,5cyclictest1601232-21kworker/2:111:29:082
1542685995042,5cyclictest1601232-21kworker/2:111:29:082
1542685995042,5cyclictest1560736-21kworker/2:211:48:472
1542685995042,5cyclictest1543691-21kworker/2:010:00:092
1542685995042,5cyclictest1543691-21kworker/2:009:38:592
1542685995031,14cyclictest275-21dbus-daemon10:55:012
154268599502,3cyclictest131rcu_preempt09:55:022
1542685995012,6cyclictest131rcu_preempt10:30:152
154268199504,3cyclictest131rcu_preempt09:15:031
154268199503,3cyclictest131rcu_preempt10:30:011
1542681995023,5cyclictest131rcu_preempt12:20:021
154268199501,3cyclictest131rcu_preempt10:05:011
1542676995020,14cyclictest1607637-21ssh11:13:440
154269099496,4cyclictest131rcu_preempt09:47:363
1542690994933,12cyclictest1-21systemd11:40:003
1542690994933,12cyclictest1-21systemd11:40:003
1542685994941,5cyclictest1639072-21kworker/2:112:34:542
1542685994941,5cyclictest1560736-21kworker/2:211:12:052
1542685994941,5cyclictest1543691-21kworker/2:010:17:012
1542685994941,5cyclictest1543691-21kworker/2:008:50:022
1542685994941,5cyclictest1543691-21kworker/2:008:50:022
1542685994940,6cyclictest1546012-21kworker/2:309:06:572
1542685994940,6cyclictest1543691-21kworker/2:009:17:362
1542685994933,12cyclictest3467602-21systemd-journal09:05:012
1542685994925,8cyclictest1560736-21kworker/2:210:30:022
154268199497,3cyclictest150-21pr/ttyS210:22:311
154268199495,3cyclictest131rcu_preempt11:15:001
154268199494,3cyclictest131rcu_preempt12:10:011
154268199494,3cyclictest131rcu_preempt11:04:161
154268199493,3cyclictest131rcu_preempt11:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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