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2026-08-31 - 14:46

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 Mon Aug 31, 2026 12:45:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6315998349,19cyclictest35966irq/58-eth011:00:133
628499593,43cyclictest10806-21ssh10:50:141
628499593,43cyclictest10806-21ssh10:50:131
626799592,41cyclictest10383-21ssh09:20:100
626799582,44cyclictest6153-21ssh12:35:130
628499574,40cyclictest16125-21ssh10:35:141
626799573,46cyclictest32678-21ssh11:20:120
628499526,35cyclictest0-21swapper/110:30:151
628499495,36cyclictest13028-21ssh11:45:121
628499494,37cyclictest28386-21ssh09:30:121
628499481,43cyclictest14649-21ssh11:10:111
626799482,41cyclictest14082-21ssh09:40:130
631599463,26cyclictest35966irq/58-eth012:15:143
6293994510,18cyclictest12477-21ssh10:15:122
626799452,33cyclictest19402-21ssh09:25:120
626799451,29cyclictest22156-21ssh11:50:140
628499443,38cyclictest2473-21ssh12:15:131
628499432,33cyclictest0-21swapper/109:25:101
629399412,20cyclictest30142-21ssh11:54:162
628499411,4cyclictest0-21swapper/107:45:141
628499404,25cyclictest5544-21ssh11:05:131
6267994019,17cyclictest12-21ksoftirqd/008:05:110
6267994012,21cyclictest12-21ksoftirqd/007:35:130
628499391,11cyclictest30533-21apt-get07:35:141
626799381,30cyclictest7898-21ssh12:00:130
626799381,29cyclictest19859-21ssh10:55:140
631599374,20cyclictest35966irq/58-eth010:15:113
626799376,22cyclictest12-21ksoftirqd/007:40:140
631599361,20cyclictest35966irq/58-eth010:30:153
631599360,22cyclictest35966irq/58-eth007:40:133
628499361,19cyclictest0-21swapper/109:40:141
628499352,29cyclictest536-21usb-storage09:15:111
628499352,13cyclictest6098-21/usr/sbin/munin12:35:321
628499351,9cyclictest29572-21unixbench_multi07:30:291
628499351,9cyclictest26607-21sort09:10:211
628499351,9cyclictest20956-21tr10:55:201
628499351,9cyclictest11229-21kthreadcore09:55:211
628499351,11cyclictest29982-21ssh11:00:201
628499351,11cyclictest17137-21kthreadcore07:20:191
6267993513,17cyclictest12-21ksoftirqd/008:55:120
6315993418,11cyclictest35966irq/58-eth010:55:153
631599341,20cyclictest35966irq/58-eth011:50:133
628499346,3cyclictest0-21swapper/111:34:101
628499341,9cyclictest484-21kernelversion09:50:191
628499341,9cyclictest15185-21irqcore09:00:181
628499341,9cyclictest10012-21/usr/sbin/munin08:55:141
628499341,7cyclictest26960-21cpuspeed08:05:141
628499341,7cyclictest1705-21/usr/sbin/munin10:45:241
628499341,10cyclictest8060-21cut12:00:171
628499341,10cyclictest4515-21sed08:15:191
628499341,10cyclictest20305-21ssh12:25:011
628499335,5cyclictest23772-21sh10:20:221
628499331,9cyclictest26777-21awk09:45:251
628499331,8cyclictest5718-21tr07:40:221
628499331,8cyclictest5382-21irqcore09:35:181
628499331,8cyclictest17814-21kthreadcore12:05:191
628499331,7cyclictest22860-21irqstats11:50:201
628499331,10cyclictest8293-21cut08:50:211
628499331,10cyclictest31560-21cat10:05:301
628499330,10cyclictest17189-21ls07:55:011
626799333,23cyclictest8858-21ssh09:55:130
629399323,18cyclictest10800-21sh10:50:142
629399323,18cyclictest10800-21sh10:50:132
629399322,22cyclictest29555-21ssh12:30:132
628499323,13cyclictest0-21swapper/110:10:111
628499321,9cyclictest24759-21tr08:35:201
628499321,9cyclictest20647-21cut08:30:211
628499321,8cyclictest7645-21latency_hist12:00:011
628499321,8cyclictest13745-21cut10:15:191
628499321,7cyclictest21489-21sed07:25:201
628499321,6cyclictest10829-21sed09:20:151
628499321,10cyclictest15214-21unixbench_singl07:15:301
628499320,9cyclictest3932-21/usr/sbin/munin11:40:301
628499320,9cyclictest25944-21kthreadcore11:15:231
631599314,16cyclictest35966irq/58-eth010:05:113
631599313,16cyclictest35966irq/58-eth011:10:103
6293993125,3cyclictest24215-21diskmemload11:00:122
629399312,22cyclictest2630-21grep12:15:172
629399312,17cyclictest28387-21ssh09:30:112
628499311,8cyclictest9260-21/usr/sbin/munin11:25:131
628499311,8cyclictest31441-21grep08:40:231
628499311,8cyclictest25257-21df_inode10:40:151
628499311,7cyclictest31190-21switchtime11:35:271
628499311,7cyclictest31190-21switchtime11:35:271
628499311,7cyclictest26534-21sed12:10:201
628499311,7cyclictest17933-21df10:00:131
628499311,6cyclictest30627-21diskstats10:25:151
626799313,21cyclictest31160-21ssh11:55:140
631599303,17cyclictest35966irq/58-eth011:55:123
629399303,17cyclictest27346irq/40-dwc2_hso11:45:132
629399302,18cyclictest27312-21ssh11:35:152
629399302,18cyclictest27312-21ssh11:35:142
628499302,9cyclictest786-21irqcore11:20:171
628499301,9cyclictest3911-21ntpq08:45:261
628499301,9cyclictest20545-21acpi12:25:131
628499301,7cyclictest29565-21ssh12:30:121
628499300,8cyclictest6471-21cut07:10:031
626799302,21cyclictest4996-21ssh09:35:150
629399293,20cyclictest27346irq/40-dwc2_hso11:05:132
629399292,20cyclictest0-21swapper/208:10:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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