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2026-08-21 - 14:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #6

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 rack8slot6s.osadl.org (updated Fri Aug 21, 2026 12:43:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
251799910521050,2cyclictest31420-21kworker/1:0+events10:07:121
251799910511049,2cyclictest15702-21kworker/1:0+events09:52:001
251799910511049,2cyclictest1494-21kworker/1:0+events11:24:241
251799910511048,3cyclictest1494-21kworker/1:0+events11:25:221
251849910501048,2cyclictest30861-21kworker/2:1+events12:11:032
251849910501047,3cyclictest20704-21kworker/2:1+events10:35:212
251799910501048,2cyclictest15702-21kworker/1:0+events09:55:221
251799910491047,2cyclictest1897-21kworker/1:1+events10:10:431
251879910451043,2cyclictest29040-21turbostat09:34:563
251849910431041,2cyclictest16707-21kworker/2:0+events08:17:092
251879910391038,1cyclictest850-21kworker/3:1+events12:07:243
251849910391037,2cyclictest20704-21kworker/2:1+events10:30:202
251849910381036,2cyclictest1917-21kworker/2:0+events12:36:062
251849910351034,1cyclictest30861-21kworker/2:1+events10:44:222
251849910341031,2cyclictest15497-21kworker/2:2+events12:33:182
251729910341032,2cyclictest29149-21turbostat07:24:550
251879910331032,1cyclictest24178-21kworker/3:1+events09:26:063
251729910331031,2cyclictest5717-21turbostat07:44:550
251879910271025,2cyclictest31569-21kworker/3:1+events08:02:543
251879910261025,1cyclictest27982-21kworker/3:2+events08:32:543
251879910251023,2cyclictest25058-21turbostat07:14:553
251729910221020,2cyclictest21488-21kworker/0:1+events11:44:360
251879910211020,1cyclictest31569-21kworker/3:1+events07:31:163
251729910211020,1cyclictest15229-21kworker/0:2+events11:51:050
251879910201019,1cyclictest24834-21kworker/3:0+events07:27:553
251729910101008,2cyclictest19731-21turbostat12:19:550
251879910091006,3cyclictest5622-21turbostat10:19:553
251879910071006,1cyclictest6336-21kworker/3:0+events12:27:023
251729910061005,1cyclictest30137-21kworker/0:0+events10:21:420
251879910031000,3cyclictest925-21turbostat11:59:553
25187991001999,2cyclictest18261-21turbostat08:14:563
2518799999998,1cyclictest5805-21kworker/3:1+events09:17:453
2518799996995,1cyclictest29583-21kworker/3:2+events09:41:513
2518799996994,2cyclictest21871-21kworker/3:1+events11:08:403
2518799995993,2cyclictest9912-21kworker/3:2+events07:52:353
2517299994993,1cyclictest6286-21kworker/0:2+events10:19:350
2517999993991,2cyclictest1897-21kworker/1:1+events09:38:051
2517299990989,1cyclictest30137-21kworker/0:0+events10:27:460
2517299990989,1cyclictest21488-21kworker/0:1+events11:49:050
2518799989988,1cyclictest29583-21kworker/3:2+events10:52:093
2518799989987,2cyclictest828-21kworker/3:0+events10:58:183
2518799988987,1cyclictest30024-21kworker/3:1+events08:37:003
2518799986984,2cyclictest828-21kworker/3:0+events10:49:463
2517999985984,1cyclictest1897-21kworker/1:1+events10:03:481
2517299985984,1cyclictest29585-21kworker/0:1+events11:16:470
2518799983982,1cyclictest10345-21kworker/3:0+events09:13:083
2518799982981,1cyclictest31569-21kworker/3:1+events08:05:223
2518799982981,1cyclictest1706-21kworker/3:2+events08:54:383
2518799981980,1cyclictest10248-21kworker/3:2+events11:32:463
2518799978976,1cyclictest17078-21kworker/3:2+events11:03:523
2517999977975,2cyclictest6047-21turbostat09:04:551
2518799976975,1cyclictest5805-21kworker/3:1+events09:05:223
2518799976975,1cyclictest21871-21kworker/3:1+events11:11:373
2518799974973,1cyclictest31569-21kworker/3:1+events07:55:223
2518799974973,1cyclictest29583-21kworker/3:2+events09:47:583
2518799974973,1cyclictest19215-21kworker/3:2+events09:21:383
2518799973972,1cyclictest20183-21kworker/3:0+events08:42:443
2518799972971,1cyclictest1706-21kworker/3:2+events08:48:373
2518799971970,1cyclictest31569-21kworker/3:1+events07:46:253
2518799970969,1cyclictest5805-21kworker/3:1+events08:58:203
2518799970969,1cyclictest31569-21kworker/3:1+events07:36:373
2518799968967,1cyclictest24759-21kworker/3:1+events08:28:023
2518799966965,1cyclictest22265-21kworker/3:2+events08:21:593
2518799966964,1cyclictest850-21kworker/3:1+events12:00:223
2518799963963,0cyclictest6336-21kworker/3:0+events12:20:233
2518799960959,1cyclictest5805-21kworker/3:1+events09:02:113
2518799960959,1cyclictest31569-21kworker/3:1+events07:41:593
2517999959957,2cyclictest28658-21turbostat10:44:561
2517299957956,1cyclictest27095-21kworker/0:1+events07:19:280
2517999952949,3cyclictest23877-21turbostat11:14:541
2517999950948,2cyclictest20271-21turbostat08:19:561
2517999940937,3cyclictest32406-21turbostat08:49:551
2518799925922,2cyclictest14894-21turbostat11:39:553
2517299924923,1cyclictest15229-21kworker/0:2+events11:36:230
2518499922920,2cyclictest5734-21turbostat11:29:552
2518799902900,2cyclictest15132-21turbostat12:14:553
2517299901898,3cyclictest5522-21turbostat12:04:550
2518799898896,2cyclictest14868-21turbostat10:29:563
2518499882879,3cyclictest5481-21turbostat10:54:552
2518799881877,3cyclictest19485-21turbostat11:44:553
2517299879877,2cyclictest1225-21turbostat09:39:550
2518799866865,1cyclictest1027-21turbostat10:14:553
2518499865863,2cyclictest26340-21turbostat08:34:562
2518499697695,2cyclictest10569-21turbostat12:09:542
2518799691690,1cyclictest1225-21turbostat09:39:553
2518799648645,3cyclictest29149-21turbostat07:24:553
2517299634631,2cyclictest10310-21turbostat11:34:540
2518499629628,1cyclictest18261-21turbostat08:14:562
2518799625624,1cyclictest28724-21turbostat11:54:553
2518799624621,3cyclictest19731-21turbostat12:19:553
2518799603600,3cyclictest5734-21turbostat11:29:543
2517299598597,1cyclictest15132-21turbostat12:14:540
2518799594591,3cyclictest28658-21turbostat10:44:563
2518799584583,1cyclictest20271-21turbostat08:19:553
2517299564561,3cyclictest1027-21turbostat10:14:560
2517999556555,1cyclictest10465-21turbostat09:49:561
2517299529526,3cyclictest23877-21turbostat11:14:540
2518499527526,1cyclictest14868-21turbostat10:29:562
2517999521517,4cyclictest29040-21turbostat09:34:561
2517299521519,2cyclictest25058-21turbostat07:14:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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