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2026-09-04 - 19:54

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 Fri Sep 04, 2026 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30761996021,7cyclictest131rcu_preempt09:30:110
3076199594,12cyclictest131rcu_preempt12:10:130
3076199525,6cyclictest131rcu_preempt07:20:120
3076999506,39cyclictest30038-21ssh09:35:111
30789994932,11cyclictest35966irq/58-eth011:40:143
3077899471,28cyclictest29128-21ssh10:10:172
3076199472,42cyclictest21809-21ssh11:35:140
3076199463,5cyclictest131rcu_preempt10:15:140
30769994532,8cyclictest0-21swapper/110:00:131
30769994532,8cyclictest0-21swapper/110:00:131
30789994438,3cyclictest35966irq/58-eth010:55:123
3078999441,25cyclictest35966irq/58-eth007:15:123
3076199434,31cyclictest18988-21ssh10:40:130
3076199421,33cyclictest22920-21ssh11:00:120
30789994130,8cyclictest35966irq/58-eth009:35:113
30769994117,17cyclictest21-21ksoftirqd/110:10:171
30761994125,9cyclictest12-21ksoftirqd/010:48:340
3076999404,29cyclictest25931-21ssh09:15:111
30761993915,4cyclictest12-21ksoftirqd/008:55:120
3076999383,24cyclictest16432-21diskmemload09:20:131
3077899371,18cyclictest25919-21ssh09:15:102
3076999365,23cyclictest12718-21ssh11:30:161
3076199363,22cyclictest679-21ssh10:30:120
30778993523,6cyclictest0-21swapper/210:50:162
3076999353,26cyclictest5960-21ssh12:20:151
3076999353,18cyclictest10844-21kworker/u8:312:25:141
3076199352,24cyclictest16213-21kthreadcore10:55:200
3076199351,23cyclictest24073-21ssh10:25:130
3077899349,10cyclictest27-21ksoftirqd/209:40:012
3077899346,20cyclictest27-21ksoftirqd/212:36:092
3076999343,24cyclictest753-21sendmail-mta08:30:131
3076199342,5cyclictest11807-21apt-get09:25:120
3076199342,27cyclictest15676-21sed09:45:010
3078999332,20cyclictest35966irq/58-eth012:20:153
3077899338,17cyclictest0-21swapper/211:56:022
3076199332,23cyclictest9849-21grep11:10:230
30778993213,6cyclictest27-21ksoftirqd/211:50:332
30778993213,13cyclictest0-21swapper/212:09:162
30778993212,12cyclictest0-21swapper/211:16:402
3077899321,19cyclictest930-21snmpd09:20:132
30778993211,14cyclictest0-21swapper/212:30:342
3076999324,15cyclictest11810-21ssh09:25:111
3076999322,20cyclictest6781-21ssh09:40:141
3077899316,17cyclictest27346irq/40-dwc2_hso11:10:182
3077899316,14cyclictest131rcu_preempt08:30:272
3077899314,16cyclictest27346irq/40-dwc2_hso10:55:122
3077899313,7cyclictest30751-21cyclictest10:00:122
3077899313,7cyclictest30751-21cyclictest10:00:122
3077899312,21cyclictest16355-21ntp_192.168.11411:30:282
3077899311,18cyclictest27346irq/40-dwc2_hso07:40:122
30778993110,15cyclictest0-21swapper/209:31:302
30769993119,6cyclictest16432-21diskmemload11:10:181
3076199312,21cyclictest30937-21ssh11:40:160
30789993018,8cyclictest35966irq/58-eth009:15:133
3078999301,20cyclictest35966irq/58-eth008:55:113
3077899306,17cyclictest27346irq/40-dwc2_hso12:00:132
3077899301,24cyclictest7499-21ssh11:45:132
30778993011,13cyclictest0-21swapper/212:23:422
3076199301,4cyclictest10603-21apt-get08:30:130
3078999291,19cyclictest35966irq/58-eth009:40:123
3077899299,14cyclictest0-21swapper/211:27:322
3077899299,13cyclictest0-21swapper/210:19:582
3077899298,4cyclictest27-21ksoftirqd/209:57:012
3077899295,13cyclictest27346irq/40-dwc2_hso08:55:122
3077899291,19cyclictest26301-21ssh11:00:212
30769992917,6cyclictest16432-21diskmemload12:10:121
30761992923,4cyclictest12-21ksoftirqd/009:10:010
3076199292,21cyclictest25569-21ssh11:55:150
3076199292,19cyclictest12153-21ssh10:53:340
3076199291,4cyclictest5932-21apt-get12:20:140
3078999283,16cyclictest0-21swapper/311:08:343
3078999282,16cyclictest35966irq/58-eth008:30:133
30789992816,8cyclictest0-21swapper/310:35:143
3077899289,4cyclictest27-21ksoftirqd/210:26:052
3077899288,8cyclictest27-21ksoftirqd/212:15:312
3077899282,21cyclictest5334-21ssh11:06:352
3077899282,16cyclictest27346irq/40-dwc2_hso08:20:122
30778992813,8cyclictest0-21swapper/210:42:542
30778992811,11cyclictest0-21swapper/211:37:572
30761992822,2cyclictest121ksoftirqd/012:05:110
3076199282,19cyclictest30576-21/usr/sbin/munin11:20:260
3078999273,18cyclictest0-21swapper/311:13:343
3078999271,13cyclictest35966irq/58-eth012:30:113
3077899277,13cyclictest27-21ksoftirqd/208:45:272
3077899276,7cyclictest27-21ksoftirqd/209:13:102
3077899276,3cyclictest131rcu_preempt07:35:172
3077899276,3cyclictest131rcu_preempt07:35:172
3077899276,12cyclictest27-21ksoftirqd/209:45:112
3077899274,15cyclictest131rcu_preempt07:55:252
3077899274,13cyclictest27-21ksoftirqd/210:05:542
3077899273,17cyclictest20299-21diskmemload12:10:122
3077899272,19cyclictest0-21swapper/207:45:132
3077899272,17cyclictest6780-21diskmemload09:40:132
3077899272,15cyclictest27346irq/40-dwc2_hso09:00:122
3076999278,9cyclictest21-21ksoftirqd/110:30:081
3076999272,19cyclictest16837-21ssh09:10:131
3076199278,8cyclictest12-21ksoftirqd/008:05:120
30761992712,9cyclictest630-21Async09:36:310
3078999268,10cyclictest36066irq/59-eth009:20:133
3077899269,11cyclictest0-21swapper/212:28:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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