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2026-05-23 - 07:28

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #4

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack7slot4s.osadl.org (updated Sat May 23, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3088599694,49cyclictest13109-21ssh00:25:121
30902996827,25cyclictest35966irq/58-eth021:40:103
30902996744,13cyclictest35966irq/58-eth022:10:123
3088199523,38cyclictest11139-21ssh23:30:130
30893994714,22cyclictest27-21ksoftirqd/223:15:112
3090299444,23cyclictest35966irq/58-eth022:25:123
3090299442,24cyclictest35966irq/58-eth021:30:133
3090299439,21cyclictest35966irq/58-eth000:30:143
3088199434,31cyclictest10373-21ssh22:00:140
3090299422,23cyclictest35966irq/58-eth023:45:133
30893994218,17cyclictest27-21ksoftirqd/200:15:132
3088199421,32cyclictest4125-21ssh00:20:120
3090299411,24cyclictest35966irq/58-eth000:20:123
3089399412,23cyclictest12135-21ssh21:25:122
3088599411,31cyclictest27003-21rm22:45:121
3089399404,26cyclictest28378-21ssh22:10:122
3088199391,30cyclictest0-21swapper/022:45:120
3090299384,23cyclictest35966irq/58-eth000:35:123
3088199382,18cyclictest10674-21ssh22:53:090
3088199382,18cyclictest10674-21ssh22:53:080
30893993728,5cyclictest27-21ksoftirqd/221:35:122
3090299362,20cyclictest35966irq/58-eth023:40:133
3090299361,13cyclictest35966irq/58-eth019:50:113
3089399368,15cyclictest32257-21ssh22:30:132
3089399364,12cyclictest261rcuc/221:20:152
3088199363,25cyclictest14085-21ssh22:20:130
3088199361,3cyclictest131rcu_preempt19:15:120
3089399353,20cyclictest7333-21ssh23:10:132
3089399342,25cyclictest24787-21ssh21:50:142
3090299331,19cyclictest35966irq/58-eth023:55:113
3089399332,28cyclictest1640-21ssh22:48:082
3089399325,17cyclictest27346irq/40-dwc2_hso19:45:112
3089399322,24cyclictest18523-21ssh00:10:142
3088199321,20cyclictest22110-21ssh00:30:120
30881993211,14cyclictest0-21swapper/021:30:130
3090299311,6cyclictest0-21swapper/323:30:123
3089399319,13cyclictest27-21ksoftirqd/220:15:132
3089399312,25cyclictest30764-21ssh23:21:092
3090299302,15cyclictest35966irq/58-eth022:30:133
3090299301,19cyclictest35966irq/58-eth019:20:133
3090299300,20cyclictest35966irq/58-eth023:00:123
3090299293,21cyclictest35966irq/58-eth021:45:153
3090299293,14cyclictest35966irq/58-eth020:30:113
3089399295,13cyclictest27346irq/40-dwc2_hso20:25:122
3089399292,18cyclictest27346irq/40-dwc2_hso22:35:122
3088199292,22cyclictest29026-21ssh22:26:410
3088199291,20cyclictest30704-21ssh23:05:120
3090299286,18cyclictest0-21swapper/322:35:123
3090299283,13cyclictest35966irq/58-eth022:50:123
3090299283,13cyclictest35966irq/58-eth022:50:113
30902992813,12cyclictest0-21swapper/323:15:123
3089399287,15cyclictest0-21swapper/222:25:122
3089399284,13cyclictest27346irq/40-dwc2_hso20:55:112
3089399283,21cyclictest27-21ksoftirqd/223:26:462
3089399283,20cyclictest0-21swapper/222:21:092
3089399283,16cyclictest27346irq/40-dwc2_hso21:05:122
3089399283,16cyclictest27-21ksoftirqd/221:10:122
3089399283,15cyclictest16928-21diskmemload21:55:142
3089399281,12cyclictest24180-21ssh22:42:092
3088599283,17cyclictest6734-21ssh21:40:111
3088199283,12cyclictest19379-21ssh22:05:120
3090299271,17cyclictest35966irq/58-eth000:00:133
3089399278,15cyclictest12725-21/usr/sbin/munin22:55:142
3089399274,14cyclictest131rcu_preempt21:00:152
3089399272,20cyclictest6203-21ssh23:09:082
3088599274,14cyclictest4996-21ssh22:15:131
30885992716,6cyclictest21-21ksoftirqd/120:25:121
3088199272,20cyclictest18012-21ssh22:56:080
3088199272,19cyclictest1-21systemd23:26:450
3090299261,5cyclictest0-21swapper/323:36:313
3090299261,4cyclictest0-21swapper/321:24:473
3090299261,3cyclictest0-21swapper/319:55:153
3090299261,17cyclictest35966irq/58-eth022:20:133
3089399262,19cyclictest0-21swapper/220:20:112
3090299253,14cyclictest0-21swapper/323:21:083
3090299252,13cyclictest35966irq/58-eth022:00:133
3090299251,9cyclictest0-21swapper/322:40:203
30902992518,4cyclictest0-21swapper/322:15:193
3090299251,5cyclictest0-21swapper/321:58:083
3090299251,3cyclictest0-21swapper/323:05:183
3090299251,3cyclictest0-21swapper/322:45:163
3090299251,3cyclictest0-21swapper/321:15:233
3090299251,3cyclictest0-21swapper/320:20:133
3089399259,13cyclictest21727-21cron00:30:022
3089399258,3cyclictest3599-21ssh22:50:112
3089399258,3cyclictest3599-21ssh22:50:112
3089399252,18cyclictest930-21snmpd19:50:132
3089399251,9cyclictest10412-21ssh22:16:082
30893992517,5cyclictest22591-21ssh21:30:202
3089399251,15cyclictest9620-21grep19:55:152
3089399251,15cyclictest24102-21fschecks_time23:55:152
3088599252,4cyclictest131rcu_preempt22:30:121
3088599252,19cyclictest16928-21diskmemload23:50:151
30885992515,6cyclictest16928-21diskmemload00:10:241
3090299241,6cyclictest0-21swapper/323:25:023
3090299241,6cyclictest0-21swapper/300:18:423
3090299241,6cyclictest0-21swapper/300:14:173
3090299241,5cyclictest0-21swapper/321:52:173
3090299241,5cyclictest0-21swapper/320:55:113
3090299241,5cyclictest0-21swapper/320:45:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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