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2026-04-07 - 23:16

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 Tue Apr 07, 2026 12:45:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1552680991201,3cyclictest0-21swapper/007:50:020
155268099951,77cyclictest0-21swapper/010:15:020
1552680998726,12cyclictest1627046-21ssh11:47:560
1552680998425,13cyclictest1612663-21ssh11:14:440
1552680998324,13cyclictest1597503-21ssh10:39:410
1552680998322,12cyclictest1607202-21ssh11:01:530
1552680998028,15cyclictest1562783-21ssh09:19:030
1552680998025,7cyclictest1645388-21ssh12:30:130
1552680998015,61cyclictest12-21ksoftirqd/011:42:250
155268099801,38cyclictest1641030-21ssh12:20:050
1552680997919,16cyclictest1634275-21ssh12:04:540
1552680997824,14cyclictest1637410-21ssh12:11:580
1552680997627,7cyclictest1589413-21ssh10:20:240
1552680997524,9cyclictest1598109-21ssh10:40:330
1552680997524,15cyclictest1640668-21ssh12:19:490
1552680997521,12cyclictest1634883-21ssh12:05:590
1552680997521,12cyclictest1634883-21ssh12:05:590
1552680997425,14cyclictest1581841-21ssh10:03:020
1552680997423,15cyclictest1630333-21ssh11:55:210
155268099734,6cyclictest0-21swapper/010:55:030
1552680997327,14cyclictest1579255-21ssh09:57:000
1552680997324,14cyclictest1583929-21ssh10:07:540
1552680997225,10cyclictest1629717-21ssh11:54:150
1552680997223,12cyclictest1572388-21ssh09:40:590
1552680997218,12cyclictest1574728-21ssh09:46:320
1552680997124,11cyclictest1576431-21ssh09:50:200
1552680997124,11cyclictest1576431-21ssh09:50:190
1552680997124,11cyclictest1556010-21systemd-run08:15:010
1552680997122,11cyclictest275-21dbus-daemon07:30:010
1552680997115,51cyclictest16850irq/134-800000009:40:000
1552680997034,33cyclictest16950irq/224-800000012:26:520
1552680996924,5cyclictest0-21swapper/010:50:000
1552680996924,16cyclictest1565101-21ssh09:24:280
1552680996919,12cyclictest1560896-21ssh09:14:490
1552680996914,13cyclictest1616033-21ssh11:22:160
1552683996859,5cyclictest1552688-21cat07:10:011
155268099681,13cyclictest0-21swapper/011:31:080
1552680996726,37cyclictest275-21dbus-daemon08:10:010
1552680996722,11cyclictest1649329-21ssh12:39:570
1552680996617,14cyclictest1566339-21ssh09:27:020
1552680996617,14cyclictest1566339-21ssh09:27:020
1552680996532,29cyclictest1554177-21sendmail07:40:000
1552680996529,5cyclictest1569130-21sh09:33:450
155268099652,4cyclictest1587385-21sshd10:15:410
155268099651,27cyclictest1605612-21ssh10:58:220
155268099651,27cyclictest1605612-21ssh10:58:220
155268099635,54cyclictest161764750ssh11:25:520
155268099635,54cyclictest161764750ssh11:25:520
1552680996330,29cyclictest1614355-21sh11:18:370
1552680996330,29cyclictest1614355-21sh11:18:370
1552680996319,14cyclictest1610092-21ssh11:08:410
1552680996319,14cyclictest1610092-21ssh11:08:400
1552680996224,8cyclictest1621780-21ssh11:35:250
1552680996224,14cyclictest1592510-21ssh10:27:520
1552680996220,13cyclictest1594838-21ssh10:33:250
1552690996051,6cyclictest1543007-21kworker/2:209:47:372
1552690996041,9cyclictest1558909-21diskmemload09:40:022
155268099602,5cyclictest1558910-21munin-run09:10:010
1552690995939,15cyclictest1-21systemd07:30:012
1552690995848,5cyclictest1591259-21kworker/2:110:34:152
1552690995847,6cyclictest1591259-21kworker/2:110:43:362
1552690995836,15cyclictest309-21in:imuxsock08:00:002
1552680995832,23cyclictest16950irq/224-800000009:00:010
1552690995749,5cyclictest1586897-21kworker/2:011:12:232
1552690995647,6cyclictest1558662-21kworker/2:310:07:192
1552690995646,6cyclictest1591259-21kworker/2:111:42:332
1552690995645,6cyclictest1591259-21kworker/2:112:30:022
1552690995644,6cyclictest1543007-21kworker/2:209:52:372
1552690995644,6cyclictest1543007-21kworker/2:209:52:372
1552690995547,5cyclictest1614976-21kworker/2:212:08:062
1552690995547,5cyclictest1614976-21kworker/2:212:08:062
1552690995519,5cyclictest131rcu_preempt08:15:012
1552680995522,5cyclictest1553234-21latency_hist07:20:030
1552680995515,25cyclictest16950irq/224-800000008:20:000
1552690995445,5cyclictest1591259-21kworker/2:112:16:042
1552690995445,5cyclictest1586897-21kworker/2:011:16:532
1552690995445,5cyclictest1586897-21kworker/2:011:16:532
1552694995332,15cyclictest275-21dbus-daemon10:05:013
1552690995345,5cyclictest1614976-21kworker/2:211:35:002
1552690995345,5cyclictest1543007-21kworker/2:210:01:452
1552690995345,5cyclictest1543007-21kworker/2:209:19:022
1552690995344,6cyclictest1614976-21kworker/2:211:28:072
1552690995344,6cyclictest1614976-21kworker/2:211:28:072
1552690995344,5cyclictest1614976-21kworker/2:212:35:182
1552690995344,5cyclictest1614976-21kworker/2:212:05:002
1552690995344,5cyclictest1591259-21kworker/2:110:49:592
1552690995344,5cyclictest1543007-21kworker/2:209:24:392
1552690995344,5cyclictest1543007-21kworker/2:209:10:122
1552680995338,11cyclictest1-21systemd08:35:010
1552680995327,9cyclictest12-21ksoftirqd/008:49:230
155269499528,8cyclictest37-21ksoftirqd/311:46:423
1552690995245,4cyclictest1586897-21kworker/2:011:02:192
1552690995244,5cyclictest1614976-21kworker/2:211:39:062
1552690995244,5cyclictest1543007-21kworker/2:209:45:012
1552690995243,5cyclictest1614976-21kworker/2:211:59:032
1552690995243,5cyclictest1591259-21kworker/2:112:21:282
1552690995242,6cyclictest1586897-21kworker/2:011:05:182
1552690995242,6cyclictest1586897-21kworker/2:011:05:182
1552690995236,12cyclictest3467602-21systemd-journal10:21:412
1552680995237,11cyclictest3467602-21systemd-journal08:00:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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