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2026-03-12 - 14:22

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 Thu Mar 12, 2026 00:45:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1763920991185,90cyclictest1832888-21ssh23:30:022
176392399698,4cyclictest131rcu_preempt20:15:033
176391499625,33cyclictest131rcu_preempt22:43:320
176391499625,33cyclictest131rcu_preempt22:43:320
1763914996124,33cyclictest1832883-21cut23:30:030
1763914996118,22cyclictest1819568-21ssh23:00:030
1763914996017,25cyclictest1841479-21ssh23:49:450
1763914995928,14cyclictest1822322-21ssh23:06:240
1763914995819,30cyclictest1845123-21ssh23:57:380
176391499578,15cyclictest131rcu_preempt21:43:170
176391499576,6cyclictest131rcu_preempt00:20:000
1763914995729,12cyclictest1808901-21ssh22:36:220
1763920995646,5cyclictest1752567-21kworker/2:020:05:152
1763914995627,13cyclictest1862455-21ssh00:36:110
1763914995623,22cyclictest1799824-21ssh22:16:000
1763914995620,32cyclictest16850irq/134-800000021:20:400
1763918995527,18cyclictest23-21ksoftirqd/121:29:521
1763914995527,13cyclictest1855563-21ssh00:20:400
1763914995527,13cyclictest1846854-21ssh00:01:210
1763914995519,6cyclictest16850irq/134-800000022:52:170
1763914995519,19cyclictest16850irq/134-800000022:46:290
1763914995518,19cyclictest16850irq/134-800000022:07:550
1763914995518,19cyclictest16850irq/134-800000022:07:540
1763914995514,21cyclictest16850irq/134-800000000:28:000
1763923995425,7cyclictest37-21ksoftirqd/321:50:153
176392399541,22cyclictest17723731unin-run21:15:013
1763920995446,5cyclictest1767230-21kworker/2:223:37:132
1763918995437,12cyclictest1-21systemd22:05:011
1763914995425,13cyclictest1777519-21ssh21:26:180
176391499542,3cyclictest131rcu_preempt21:15:520
1763914995419,18cyclictest16850irq/134-800000023:32:110
1763914995419,18cyclictest16850irq/134-800000023:11:110
176391499541,37cyclictest1782559-21ssh21:37:450
1763920995345,5cyclictest1767230-21kworker/2:223:53:322
1763920995344,5cyclictest1767230-21kworker/2:200:26:342
1763918995336,12cyclictest275-21dbus-daemon21:00:021
1763914995334,5cyclictest16850irq/134-800000023:17:400
1763914995324,14cyclictest1807072-21ssh22:32:250
1763914995324,14cyclictest1807072-21ssh22:32:250
1763914995324,13cyclictest1860188-21ssh00:31:010
1763914995322,21cyclictest1786052-21ssh21:45:120
1763914995318,5cyclictest16850irq/134-800000022:26:550
1763914995318,19cyclictest1834020-21kworker/u8:200:10:440
1763914995317,6cyclictest16850irq/134-800000023:52:210
1763914995317,6cyclictest16850irq/134-800000021:33:470
1763914995316,7cyclictest16850irq/134-800000022:02:450
176391499531,3cyclictest131rcu_preempt00:05:590
1763920995244,5cyclictest1767230-21kworker/2:221:14:142
1763920995244,5cyclictest1752567-21kworker/2:020:00:032
1763920995244,5cyclictest1752567-21kworker/2:020:00:022
1763914995218,18cyclictest16850irq/134-800000023:41:540
1763914995218,17cyclictest16850irq/134-800000022:56:050
1763914995217,18cyclictest16850irq/134-800000023:22:260
1763914995216,6cyclictest16850irq/134-800000021:55:230
1763923995135,11cyclictest1-21systemd22:40:003
1763920995143,5cyclictest1767230-21kworker/2:200:30:502
1763920995142,5cyclictest1767230-21kworker/2:222:21:212
1763918995134,13cyclictest1-21systemd21:35:011
1763914995117,18cyclictest16850irq/134-800000022:21:560
1763923995035,12cyclictest1-21systemd23:25:003
1763920995043,5cyclictest1767230-21kworker/2:200:23:412
1763920995042,5cyclictest1767230-21kworker/2:222:47:182
1763920995042,5cyclictest1764651-21kworker/2:121:18:042
1763918995034,12cyclictest1-21systemd00:40:001
1763918995025,10cyclictest23-21ksoftirqd/123:29:581
1763918995012,6cyclictest131rcu_preempt21:44:591
1763914995037,9cyclictest16950irq/224-800000021:55:000
1763914995017,16cyclictest16850irq/134-800000022:11:380
1763914995017,16cyclictest16850irq/134-800000022:11:380
176392399499,8cyclictest131rcu_preempt22:05:033
176392399499,6cyclictest131rcu_preempt23:10:003
176392399494,3cyclictest131rcu_preempt21:32:033
1763923994933,12cyclictest3467602-21systemd-journal23:17:013
1763923994926,10cyclictest37-21ksoftirqd/300:34:473
1763920994941,5cyclictest1767230-21kworker/2:200:02:112
1763920994939,7cyclictest1764651-21kworker/2:121:45:012
176391899494,4cyclictest131rcu_preempt22:35:501
1763918994925,5cyclictest23-21ksoftirqd/122:30:001
1763914994923,12cyclictest0-21swapper/021:05:010
1763914994920,24cyclictest16850irq/134-800000021:10:000
176392399485,7cyclictest37-21ksoftirqd/321:50:023
176392399485,3cyclictest131rcu_preempt00:01:223
176392399481,8cyclictest0-21swapper/323:15:013
176392399481,6cyclictest131rcu_preempt23:00:073
1763920994841,4cyclictest1817144-21kworker/2:323:21:442
1763920994840,5cyclictest1767230-21kworker/2:223:58:342
1763920994840,5cyclictest1767230-21kworker/2:223:08:162
1763920994840,5cyclictest1767230-21kworker/2:222:34:532
1763920994840,5cyclictest1767230-21kworker/2:222:34:522
1763920994840,5cyclictest1764651-21kworker/2:122:39:192
1763920994840,5cyclictest1764651-21kworker/2:122:08:392
1763920994840,5cyclictest1764651-21kworker/2:122:08:392
1763920994840,5cyclictest1764651-21kworker/2:121:50:152
1763920994840,5cyclictest1764651-21kworker/2:121:27:072
1763920994840,4cyclictest1817144-21kworker/2:323:19:002
1763920994839,5cyclictest1767230-21kworker/2:200:36:472
1763920994833,6cyclictest1764651-21kworker/2:121:30:082
176391899484,8cyclictest131rcu_preempt00:00:001
176391899484,3cyclictest131rcu_preempt21:20:021
176391899484,3cyclictest131rcu_preempt00:28:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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