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2026-10-01 - 19:16

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 Thu Oct 01, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141799910511049,2cyclictest23418-21kworker/3:1+events09:50:323
141799910491048,1cyclictest23137-21kworker/3:0+events08:22:583
141799910451043,2cyclictest16977-21kworker/3:1+events09:42:573
141649910451042,3cyclictest31537-21turbostat10:54:550
141649910431042,1cyclictest13355-21kworker/0:0+events12:36:270
141799910361034,1cyclictest24756-21kworker/3:2+events08:34:173
141799910351033,2cyclictest24157-21kworker/3:2+events10:00:423
141649910351033,2cyclictest1215-21turbostat09:19:550
141739910341032,2cyclictest8963-21kworker/2:0+events12:25:542
141799910281027,1cyclictest13103-21kworker/3:2+events09:39:133
141799910251023,2cyclictest14072-21turbostat07:14:563
141799910251023,2cyclictest14072-21turbostat07:14:553
141689910151013,2cyclictest22521-21turbostat08:19:551
141739910101010,0cyclictest5993-21kworker/2:2+events11:52:342
141799910091008,1cyclictest15364-21kworker/3:1+events07:23:133
141689910041001,3cyclictest20577-21turbostat08:04:551
141649910041002,1cyclictest4098-21turbostat11:29:550
141799910031002,1cyclictest23418-21kworker/3:1+events10:32:223
141649910021001,1cyclictest32200-21kworker/0:0+events11:00:440
141739910011000,1cyclictest9844-21kworker/2:3+events12:19:222
141739910011000,1cyclictest14979-21kworker/2:0+events11:46:292
14173991000999,1cyclictest5993-21kworker/2:2+events11:55:432
14164991000999,1cyclictest28981-21kworker/0:2+events09:12:330
1417399999998,1cyclictest9844-21kworker/2:3+events12:20:222
1416899998997,1cyclictest19611-21kworker/1:0+events08:09:041
1417399997996,1cyclictest8963-21kworker/2:0+events12:02:432
1417399996995,1cyclictest8963-21kworker/2:0+events12:11:062
1416499996995,1cyclictest25972-21kworker/0:0+events10:16:290
1417399995994,1cyclictest14979-21kworker/2:0+events11:40:232
1416499994993,1cyclictest1188-21kworker/0:1+events11:12:460
1417399993992,1cyclictest5993-21kworker/2:2+events12:08:592
1416499993992,1cyclictest25972-21kworker/0:0+events10:10:230
1417399992991,1cyclictest14979-21kworker/2:0+events08:40:432
1417399992991,1cyclictest13238-21kworker/2:2+events07:15:232
1417399992991,1cyclictest12812-21kworker/2:2+events12:32:352
1416499992991,1cyclictest32200-21kworker/0:0+events11:17:540
1416499992991,1cyclictest28014-21kworker/0:1+events10:24:420
1416499991990,1cyclictest28981-21kworker/0:2+events09:02:110
1417999990988,2cyclictest30900-21turbostat10:49:553
1417399989988,1cyclictest14979-21kworker/2:0+events08:35:212
1416499989988,1cyclictest28014-21kworker/0:1+events10:55:230
1416499988987,1cyclictest28981-21kworker/0:2+events10:05:200
1416499986985,1cyclictest1188-21kworker/0:1+events11:06:360
1416899985984,1cyclictest14742-21turbostat07:19:561
1416499984983,1cyclictest28014-21kworker/0:1+events10:25:430
1416499982981,1cyclictest6661-21kworker/0:0+events09:09:210
1417999981980,1cyclictest4683-21kworker/3:1+events09:22:483
1416899979978,1cyclictest19611-21kworker/1:0+events07:57:311
1416499976973,1cyclictest32200-21kworker/0:0+events11:20:220
1416499972969,3cyclictest17316-21turbostat07:39:560
1416899970969,1cyclictest12895-21kworker/1:2+events07:43:191
1417999969967,2cyclictest5377-21turbostat11:39:553
1416899966965,1cyclictest18264-21kworker/1:1+events07:48:201
1416899960959,1cyclictest4340-21kworker/1:2+events11:26:051
1417399959956,3cyclictest23567-21turbostat09:54:552
1416899955954,1cyclictest21820-21kworker/1:1+events08:11:051
1416899953952,1cyclictest27048-21kworker/1:1+events08:48:301
1416899953952,1cyclictest12895-21kworker/1:2+events07:54:461
1417999945943,1cyclictest9139-21kworker/3:0+events09:31:033
1417999933932,1cyclictest9139-21kworker/3:0+events09:26:473
1417399933932,1cyclictest16050-21turbostat07:29:562
1417999924923,1cyclictest4716-21kworker/3:1+events11:33:393
1417999924923,1cyclictest24157-21kworker/3:2+events09:56:043
1417999913912,1cyclictest28941-21kworker/3:2+events10:41:043
1417999913912,1cyclictest21812-21kworker/3:0+events09:46:063
1417999912911,1cyclictest28941-21kworker/3:2+events10:36:363
1417999911909,2cyclictest12473-21turbostat12:34:553
1417999910908,1cyclictest16974-21kworker/3:2+events07:39:003
1417399909907,2cyclictest28324-21turbostat10:29:552
1417999908906,2cyclictest28085-21turbostat08:59:553
1417999907906,1cyclictest15364-21kworker/3:1+events07:28:373
1417999905905,0cyclictest15364-21kworker/3:1+events07:31:503
1417999902901,1cyclictest24756-21kworker/3:2+events08:52:323
1417399901899,2cyclictest15774-21turbostat09:39:552
1416899901899,2cyclictest7946-21turbostat11:59:551
1417999899898,1cyclictest23137-21kworker/3:0+events08:25:223
1417999894890,4cyclictest25733-21turbostat08:44:543
1417999883881,2cyclictest1521-21turbostat11:09:553
1416499881877,4cyclictest15384-21turbostat07:24:560
1417399864862,2cyclictest26397-21turbostat08:49:552
1417999856854,2cyclictest27664-21turbostat10:24:553
1416899696695,1cyclictest25733-21turbostat08:44:551
1417999691688,3cyclictest14742-21turbostat07:19:563
1417999681678,3cyclictest4098-21turbostat11:29:553
1417399667664,3cyclictest14072-21turbostat07:14:562
1417399667664,3cyclictest14072-21turbostat07:14:552
1416899628626,2cyclictest3436-21turbostat11:24:551
1416499624621,3cyclictest30900-21turbostat10:49:550
1416499618617,1cyclictest24956-21turbostat10:04:550
1417399609608,1cyclictest5377-21turbostat11:39:552
1417999578575,3cyclictest28324-21turbostat10:29:553
1416499543542,1cyclictest12473-21turbostat12:34:550
1416499540539,1cyclictest28085-21turbostat08:59:550
1417999533530,3cyclictest26397-21turbostat08:49:553
1417399527526,1cyclictest24458-21turbostat08:34:552
1417999518517,1cyclictest22521-21turbostat08:19:553
1417999510509,1cyclictest1215-21turbostat09:19:553
1416899497495,2cyclictest17316-21turbostat07:39:561
14179991818,0cyclictest67350irq/124-lan10:10:593
14179991817,1cyclictest67350irq/124-lan12:08:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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