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2026-08-28 - 17:38

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 28, 2026 12:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
168979910521050,2cyclictest6834-21kworker/0:0+events08:06:490
168979910521050,2cyclictest29387-21kworker/0:0+events09:47:560
168979910521050,2cyclictest19595-21kworker/0:2+events08:48:000
168979910521050,2cyclictest1866-21kworker/0:2+events07:48:220
168979910521049,3cyclictest26229-21kworker/0:0+events10:12:110
169139910511049,2cyclictest12402-21kworker/3:0+events07:21:283
169139910511047,4cyclictest22544-21kworker/3:2+events10:06:043
168979910511049,2cyclictest3914-21kworker/0:1+events12:28:500
168979910511049,2cyclictest3914-21kworker/0:1+events12:24:000
168979910511049,2cyclictest29387-21kworker/0:0+events09:23:040
168979910511049,2cyclictest27531-21kworker/0:1+events10:51:150
168979910511049,2cyclictest25463-21kworker/0:0+events11:57:560
168979910511049,2cyclictest2305-21kworker/0:2+events09:53:250
168979910511049,2cyclictest17555-21kworker/0:0+events08:34:040
168979910511048,3cyclictest15868-21kworker/0:1+events11:48:080
169139910501048,2cyclictest4183-21kworker/3:1+events10:22:083
169139910501048,2cyclictest12402-21kworker/3:0+events08:18:023
169139910501048,2cyclictest12402-21kworker/3:0+events07:31:363
169139910501047,3cyclictest4183-21kworker/3:1+events11:40:453
169139910501047,3cyclictest12402-21kworker/3:0+events07:12:363
169139910501046,2cyclictest24746-21kworker/3:1+events07:28:413
168979910501048,2cyclictest29387-21kworker/0:0+events09:55:230
168979910501048,2cyclictest29387-21kworker/0:0+events08:56:060
168979910501048,2cyclictest27531-21kworker/0:1+events10:55:440
168979910501048,2cyclictest2720-21kworker/0:1+events08:37:350
168979910501048,2cyclictest1866-21kworker/0:2+events07:59:070
168979910501048,2cyclictest11984-21kworker/0:2+events11:12:120
168979910501047,3cyclictest17765-21kworker/0:0+events10:43:190
169139910491045,2cyclictest32697-21kworker/3:1+events07:15:223
168979910491047,2cyclictest4855-21kworker/0:0+events11:03:570
168979910491047,2cyclictest3914-21kworker/0:1+events12:06:070
168979910491047,2cyclictest2720-21kworker/0:1+events08:21:280
168979910491047,2cyclictest2720-21kworker/0:1+events08:13:080
168979910491047,2cyclictest19595-21kworker/0:2+events08:44:440
168979910491047,2cyclictest11984-21kworker/0:2+events12:02:090
168979910491046,3cyclictest11984-21kworker/0:2+events10:45:200
169139910481044,2cyclictest6212-21kworker/3:0+events11:35:423
168979910481046,2cyclictest6574-21kworker/0:1+events10:27:140
168979910481046,2cyclictest2720-21kworker/0:1+events08:50:430
168979910481045,3cyclictest11984-21kworker/0:2+events11:21:340
168979910471045,2cyclictest2720-21kworker/0:1+events07:51:500
168979910461044,2cyclictest11984-21kworker/0:2+events10:37:000
169139910451042,3cyclictest12402-21kworker/3:0+events10:00:223
168979910451043,2cyclictest16325-21kworker/0:0+events12:33:280
168979910431041,2cyclictest14634-21kworker/0:1+events11:16:480
169139910411039,2cyclictest30123-21kworker/3:0+events10:18:493
168979910401038,2cyclictest4855-21kworker/0:0+events11:06:270
169139910391036,3cyclictest1422-21turbostat09:14:553
168979910391037,2cyclictest11984-21kworker/0:2+events10:30:440
169019910381037,1cyclictest16292-21kworker/1:0+events09:19:331
168979910371035,2cyclictest6834-21kworker/0:0+events08:03:300
168979910351033,2cyclictest2720-21kworker/0:1+events08:26:070
169139910271025,2cyclictest20407-21turbostat12:29:553
169079910161015,1cyclictest7226-21kworker/2:2+events12:17:432
169139910121010,2cyclictest20528-21turbostat11:54:553
169019910121011,1cyclictest30138-21kworker/1:1+events11:26:301
169139910031000,3cyclictest11123-21turbostat09:24:563
1691399999997,2cyclictest24839-21turbostat11:24:543
1690199999995,4cyclictest11167-21turbostat08:19:551
1690799994993,1cyclictest27792-21kworker/2:1+events07:35:432
1690199985983,2cyclictest6421-21turbostat11:04:541
1691399983981,2cyclictest5118-21turbostat08:04:563
1691399973971,2cyclictest29481-21turbostat11:29:553
1690199972971,1cyclictest27104-21kworker/1:2+events09:40:231
1690799969968,1cyclictest1026-21kworker/2:2+events09:13:132
1690799965964,1cyclictest27792-21kworker/2:1+events07:42:222
1690799960959,1cyclictest3987-21kworker/2:0+events11:52:212
1690799960959,1cyclictest28743-21kworker/2:0+events09:02:372
1690199955954,1cyclictest22286-21kworker/1:0+events09:38:401
1690799954951,1cyclictest30201-21kworker/2:1+events09:05:232
1689799954951,3cyclictest1676-21turbostat11:34:550
1690199953951,2cyclictest29407-21kworker/1:0+events12:38:141
1690799949948,1cyclictest20472-21kworker/2:1+events12:10:232
1690199939937,2cyclictest6940-21kworker/1:1+events09:29:521
1690199936935,1cyclictest30138-21kworker/1:1+events11:34:161
1690199925924,1cyclictest22286-21kworker/1:0+events09:31:061
1691399921919,2cyclictest15935-21turbostat11:49:553
1691399920918,2cyclictest6500-21turbostat09:19:563
1690199906904,2cyclictest25188-21turbostat10:14:561
1690199904901,3cyclictest11169-21turbostat12:19:541
1690199903901,2cyclictest20617-21turbostat10:09:551
1691399897895,2cyclictest24990-21turbostat12:34:543
1691399894892,2cyclictest29534-21turbostat09:44:563
1691399875873,2cyclictest27749-21turbostat08:59:553
1691399865863,2cyclictest29420-21turbostat07:44:553
1691399865863,2cyclictest1967-21turbostat12:09:553
1689799691690,1cyclictest11167-21turbostat08:19:550
1689799687684,3cyclictest6500-21turbostat09:19:550
1690799680679,1cyclictest24915-21turbostat07:34:552
1690199663661,2cyclictest1422-21turbostat09:14:551
1689799632629,3cyclictest29420-21turbostat07:44:550
1690199630626,4cyclictest11123-21turbostat09:24:561
1690199624623,1cyclictest24839-21turbostat11:24:541
1689799600596,4cyclictest11169-21turbostat12:19:540
1689799599596,3cyclictest20617-21turbostat10:09:550
1689799594591,3cyclictest2001-21turbostat10:24:560
1691399591586,2cyclictest10963-21turbostat09:59:563
1691399588587,1cyclictest25188-21turbostat10:14:563
1690799582579,3cyclictest15935-21turbostat11:49:552
1689799578576,2cyclictest20528-21turbostat11:54:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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