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2026-09-02 - 19:53

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 Wed Sep 02, 2026 12:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293649910521050,2cyclictest24959-21kworker/2:1+events12:01:392
293539910511049,2cyclictest24974-21kworker/0:1+events11:17:300
293709910501048,2cyclictest10449-21kworker/3:0+events09:42:133
293649910501048,2cyclictest24959-21kworker/2:1+events11:48:192
293649910501047,3cyclictest19737-21kworker/2:0+events11:50:232
293539910501049,1cyclictest18652-21kworker/0:2+events11:56:480
293649910491048,1cyclictest19696-21kworker/2:2+events11:36:492
293649910491047,2cyclictest19737-21kworker/2:0+events11:43:162
293589910491046,3cyclictest1435-21turbostat10:44:551
293539910491047,2cyclictest6194-21kworker/0:1+events12:20:230
293649910481046,2cyclictest31398-21kworker/2:0+events09:56:052
293539910481047,1cyclictest24974-21kworker/0:1+events11:06:270
293589910471044,3cyclictest20021-21turbostat08:09:551
293539910471046,1cyclictest1747-21kworker/0:0+events10:25:230
293649910461044,2cyclictest16899-21kworker/2:0+events12:06:282
293649910461044,2cyclictest13570-21kworker/2:2+events09:06:342
293539910461045,1cyclictest28453-21kworker/0:1+events10:02:140
293539910461045,1cyclictest24974-21kworker/0:1+events11:28:310
293589910451043,2cyclictest22262-21kworker/1:0+events08:12:311
293539910451044,1cyclictest18472-21kworker/0:2+events09:20:220
293539910451043,2cyclictest24594-21kworker/0:0+events12:17:420
293539910441043,1cyclictest24001-21kworker/0:0+events09:29:550
293539910441043,1cyclictest2015-21kworker/0:0+events10:43:390
293649910431042,1cyclictest31398-21kworker/2:0+events09:52:322
293649910421040,2cyclictest13570-21kworker/2:2+events09:14:302
293649910411039,2cyclictest13570-21kworker/2:2+events09:17:342
293649910401038,2cyclictest31398-21kworker/2:0+events07:14:202
293709910351034,1cyclictest16950-21kworker/3:1+events10:21:493
293709910351033,2cyclictest15220-21turbostat11:34:553
293649910331030,3cyclictest1193-21turbostat10:09:542
293539910261024,2cyclictest24974-21kworker/0:1+events11:20:220
293539910251024,1cyclictest24974-21kworker/0:1+events11:11:510
293649910241022,2cyclictest8061-21kworker/2:1+events08:58:172
293589910231020,3cyclictest19607-21turbostat10:29:551
293589910171016,1cyclictest25091-21kworker/1:2+events10:51:521
293709910051004,1cyclictest29564-21kworker/3:1+events10:48:083
293709910051001,3cyclictest24040-21turbostat08:19:553
293589910021001,1cyclictest25091-21kworker/1:2+events11:03:581
2935899999998,1cyclictest11225-21kworker/1:0+events10:55:441
2935899998997,1cyclictest22262-21kworker/1:0+events08:16:051
2937099995994,1cyclictest10449-21kworker/3:0+events10:16:373
2937099992991,1cyclictest3983-21kworker/3:0+events12:11:393
2935399992991,1cyclictest2015-21kworker/0:0+events11:30:230
2936499990988,2cyclictest404-21turbostat09:34:552
2937099986983,3cyclictest1250-21turbostat11:54:563
2937099980979,1cyclictest19615-21kworker/3:1+events12:28:083
2937099977975,2cyclictest1742-21kworker/3:1+events07:29:503
2935399973972,1cyclictest18472-21kworker/0:2+events09:30:220
2937099971969,2cyclictest29221-21turbostat10:39:553
2935399969968,1cyclictest1479-21kworker/0:1+events08:53:490
2937099967965,2cyclictest19891-21turbostat11:04:543
2937099966965,1cyclictest24548-21kworker/3:0+events10:30:433
2937099966964,2cyclictest5820-21turbostat08:54:543
2935399966965,1cyclictest26321-21kworker/0:1+events08:31:060
2937099965963,2cyclictest16698-21kworker/3:1+events10:12:353
2935399964963,1cyclictest26321-21kworker/0:1+events08:27:140
2935399964963,1cyclictest26321-21kworker/0:1+events08:24:110
2935399963962,1cyclictest1479-21kworker/0:1+events08:41:070
2936499961960,1cyclictest8061-21kworker/2:1+events09:03:422
2935399961960,1cyclictest18472-21kworker/0:2+events08:39:490
2935399956955,1cyclictest28453-21kworker/0:1+events10:07:340
2935399954953,1cyclictest18472-21kworker/0:2+events08:47:340
2935399952949,3cyclictest31714-21turbostat07:19:540
2935399948946,2cyclictest11943-21turbostat07:49:550
2935399936934,2cyclictest1137-21turbostat12:29:560
2937099934932,2cyclictest1060-21kworker/3:2+events12:39:493
2936499929926,3cyclictest5824-21turbostat07:34:542
2937099923921,1cyclictest11645-21kworker/3:2+events09:35:223
2937099922919,3cyclictest18564-21turbostat09:19:553
2937099920919,1cyclictest1742-21kworker/3:1+events07:39:473
2937099917916,1cyclictest19615-21kworker/3:1+events12:32:583
2937099916915,1cyclictest10449-21kworker/3:0+events09:47:583
2935399916913,3cyclictest23911-21turbostat09:59:550
2937099915913,2cyclictest5872-21turbostat11:59:553
2937099913912,1cyclictest15735-21kworker/3:0+events07:52:553
2935399913911,2cyclictest15090-21turbostat12:09:560
2937099912911,1cyclictest11645-21kworker/3:2+events07:49:123
2937099911910,1cyclictest4225-21kworker/3:0+events07:44:333
2937099910909,1cyclictest1742-21kworker/3:1+events07:23:403
2937099909909,0cyclictest11645-21kworker/3:2+events08:04:063
2937099908907,1cyclictest4225-21kworker/3:0+events07:33:493
2937099906905,1cyclictest15735-21kworker/3:0+events07:56:503
2937099904903,1cyclictest15735-21kworker/3:0+events08:05:213
2936499880879,1cyclictest31398-21kworker/2:0+events07:15:322
2937099866864,2cyclictest29140-21turbostat11:14:553
2936499694692,1cyclictest5820-21turbostat08:54:542
2937099684683,1cyclictest19607-21turbostat10:29:543
2935399661658,3cyclictest14969-21turbostat10:24:550
2937099656655,1cyclictest31714-21turbostat07:19:553
2936499644641,3cyclictest5872-21turbostat11:59:552
2937099618616,2cyclictest15090-21turbostat12:09:563
2937099613611,2cyclictest1193-21turbostat10:09:543
2935899606604,2cyclictest6094-21turbostat10:49:541
2935399606603,3cyclictest24040-21turbostat08:19:540
2936499595592,3cyclictest14740-21turbostat09:49:542
2935399588587,1cyclictest1250-21turbostat11:54:560
2937099576573,3cyclictest28886-21turbostat12:24:563
2935399576573,2cyclictest29221-21turbostat10:39:550
2935399571569,2cyclictest19891-21turbostat11:04:550
2937099570569,1cyclictest404-21turbostat09:34:553
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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