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2026-03-16 - 19:15

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 Mar 16, 2026 12:45:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1709699634,47cyclictest28861-21ssh10:00:121
17121995929,19cyclictest28366irq/58-eth009:10:133
17121995929,19cyclictest28366irq/58-eth009:10:123
1712199575,36cyclictest28366irq/58-eth011:50:123
1712199575,36cyclictest28366irq/58-eth011:50:123
1709699552,40cyclictest8569-21ssh11:55:121
1708399523,44cyclictest26608-21ssh12:05:130
17121995126,13cyclictest28366irq/58-eth012:05:113
1708399511,43cyclictest16044-21ssh09:35:120
17121994838,5cyclictest28366irq/58-eth010:25:123
1712199482,29cyclictest28366irq/58-eth007:45:133
1711199413,27cyclictest3293-21ssh09:10:142
1711199413,27cyclictest3293-21ssh09:10:132
17096994114,22cyclictest21-21ksoftirqd/111:15:111
17083994113,22cyclictest12-21ksoftirqd/010:20:130
17111994012,21cyclictest27-21ksoftirqd/210:15:132
1708399402,32cyclictest6999-21ssh09:30:130
1711199392,20cyclictest14987-21rm11:57:232
17111993813,18cyclictest27-21ksoftirqd/209:50:132
1711199373,21cyclictest22346irq/40-dwc2_hso08:35:122
1709699375,7cyclictest131rcu_preempt09:00:121
1708399371,3cyclictest131rcu_preempt12:20:120
17111993611,16cyclictest27-21ksoftirqd/212:25:112
1711199352,21cyclictest27-21ksoftirqd/212:05:122
1711199341,26cyclictest21642-21ssh09:36:232
1708399342,25cyclictest25117-21ssh09:40:140
1712199332,20cyclictest28366irq/58-eth010:15:123
1709699332,18cyclictest21-21ksoftirqd/108:25:131
1708399333,24cyclictest5156-21ssh11:35:130
1709699325,18cyclictest6840-21ssh12:30:111
1712199312,10cyclictest0-21swapper/309:05:133
1711199311,15cyclictest6702-21rm09:45:392
1709699312,21cyclictest30587-21ssh10:55:131
17096993117,8cyclictest21-21ksoftirqd/109:31:221
1712199302,14cyclictest28366irq/58-eth012:30:113
1711199303,18cyclictest22346irq/40-dwc2_hso11:35:142
1709699307,13cyclictest21-21ksoftirqd/107:25:131
1709699302,21cyclictest14374-21/usr/sbin/munin09:50:221
1709699302,19cyclictest32019-21ssh11:50:131
1709699302,19cyclictest32019-21ssh11:50:131
17121992913,10cyclictest28366irq/58-eth009:30:123
1711199292,20cyclictest0-21swapper/207:35:142
1711199292,11cyclictest14917-21ssh12:34:232
1711199291,20cyclictest9189-21ssh10:25:132
1709699291,23cyclictest23093-21ssh11:45:141
1708399292,22cyclictest5330-21ntp_192.168.11409:45:230
1708399292,20cyclictest21359-21ssh09:20:140
1712199283,18cyclictest0-21swapper/311:34:243
1712199283,17cyclictest28366irq/58-eth011:10:143
1711199283,20cyclictest0-21swapper/210:09:222
1711199283,17cyclictest22346irq/40-dwc2_hso11:30:122
1711199283,17cyclictest12254-21ssh09:15:122
1711199281,17cyclictest10571-21apt-get11:20:122
17096992812,8cyclictest17069-21cyclictest08:10:141
1712199273,18cyclictest0-21swapper/309:35:443
1712199273,16cyclictest0-21swapper/311:58:233
1711199272,21cyclictest0-21swapper/211:43:232
1711199272,18cyclictest3165-21grep07:25:292
1709699272,19cyclictest30691-21ssh09:41:231
1709699272,19cyclictest20070-21ssh10:11:241
1709699271,20cyclictest21269-21ssh12:20:131
17096992711,8cyclictest21-21ksoftirqd/110:25:371
17083992716,5cyclictest0-21swapper/010:25:140
1708399271,21cyclictest14177-21ssh11:40:150
1712199262,17cyclictest0-21swapper/309:45:463
17121992615,8cyclictest0-21swapper/309:55:133
17121992612,9cyclictest28366irq/58-eth010:20:043
1712199261,12cyclictest28366irq/58-eth011:05:133
1711199263,15cyclictest22346irq/40-dwc2_hso09:20:122
1711199262,19cyclictest9659-21ssh11:19:242
1711199262,16cyclictest22346irq/40-dwc2_hso07:30:112
1711199261,19cyclictest27100-21ls10:35:142
1709699262,20cyclictest1712-21ssh09:45:131
1709699262,19cyclictest2889-21diskmemload10:05:401
1709699262,19cyclictest27850-21ssh09:59:231
1709699261,23cyclictest15851-21ssh12:35:131
1708399262,18cyclictest12532-21ssh10:45:130
1708399262,16cyclictest30294-21ssh09:25:110
1708399261,19cyclictest14986-21sh11:57:230
1708399261,18cyclictest19526-21ssh12:35:250
1712199253,16cyclictest0-21swapper/310:10:233
1712199253,15cyclictest0-21swapper/309:41:233
1711199252,18cyclictest24216-21ssh11:09:232
1711199252,13cyclictest1815-21switchtime09:25:272
17111992514,5cyclictest29198-21ssh11:47:062
1709699252,6cyclictest131rcu_preempt08:20:131
1709699252,18cyclictest4333-21ssh09:27:231
1709699252,18cyclictest22465-21ssh09:37:241
1709699252,15cyclictest3284-21ssh09:10:121
1709699252,15cyclictest3284-21ssh09:10:121
1708399258,4cyclictest131rcu_preempt11:30:190
1708399251,3cyclictest131rcu_preempt11:45:140
1712199244,12cyclictest28366irq/58-eth011:45:143
1711199246,8cyclictest18599-21grep10:10:292
1711199242,17cyclictest0-21swapper/212:23:242
1711199242,17cyclictest0-21swapper/209:34:232
1711199242,16cyclictest22346irq/40-dwc2_hso08:00:132
17111992416,3cyclictest32597-21sh10:20:122
17111992411,11cyclictest1-21systemd07:20:022
1711199240,8cyclictest0-21swapper/210:56:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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