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2026-09-07 - 00:45

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 Sun Sep 06, 2026 12:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
269089910531050,3cyclictest28500-21kworker/3:1+events09:34:023
269089910521050,2cyclictest8254-21kworker/3:2+events08:02:193
269089910521050,2cyclictest30553-21kworker/3:1+events07:20:443
269089910521050,2cyclictest16502-21kworker/3:0+events08:22:553
269089910521050,2cyclictest16502-21kworker/3:0+events08:07:283
269089910521049,3cyclictest24889-21kworker/3:2+events11:30:433
269089910511049,2cyclictest8254-21kworker/3:2+events07:50:443
269089910511049,2cyclictest8254-21kworker/3:2+events07:46:363
269089910511049,2cyclictest32630-21kworker/3:0+events07:36:063
269089910511049,2cyclictest30559-21kworker/3:2+events08:39:353
269089910511049,2cyclictest28500-21kworker/3:1+events08:31:493
269089910511049,2cyclictest27425-21kworker/3:1+events10:02:563
269089910511049,2cyclictest27248-21kworker/3:2+events09:41:143
269089910511049,2cyclictest20112-21kworker/3:0+events07:15:453
269089910511048,2cyclictest8254-21kworker/3:2+events07:58:473
268979910511049,2cyclictest2316-21kworker/0:0+events12:08:380
269089910501048,2cyclictest9994-21kworker/3:0+events09:57:223
269089910501048,2cyclictest27425-21kworker/3:1+events10:18:493
269089910501047,3cyclictest28507-21kworker/3:2+events07:12:443
269089910501047,3cyclictest27425-21kworker/3:1+events10:12:563
269089910501046,3cyclictest32630-21kworker/3:0+events07:44:553
269059910501048,2cyclictest4167-21kworker/2:2+events08:54:242
269059910501048,2cyclictest1098-21kworker/2:1+events07:30:212
269089910491047,2cyclictest24889-21kworker/3:2+events11:20:213
269089910491047,2cyclictest16502-21kworker/3:0+events08:26:053
269029910491048,1cyclictest12071-21kworker/1:0+events10:43:071
268979910491048,1cyclictest16865-21kworker/0:0+events10:36:470
269089910481046,2cyclictest28500-21kworker/3:1+events09:35:323
269089910481045,3cyclictest9994-21kworker/3:0+events10:06:273
269089910471045,2cyclictest24889-21kworker/3:2+events11:26:153
269059910461044,2cyclictest4167-21kworker/2:2+events08:57:332
268979910461044,2cyclictest16865-21kworker/0:0+events11:02:410
269089910451043,2cyclictest28500-21kworker/3:1+events09:25:223
269059910451043,2cyclictest4167-21kworker/2:2+events08:46:262
269089910441042,2cyclictest7393-21turbostat10:54:553
269059910441042,2cyclictest10793-21kworker/2:0+events09:16:292
269059910441042,2cyclictest10793-21kworker/2:0+events09:14:362
269059910441041,3cyclictest4167-21kworker/2:2+events09:05:222
269029910431042,1cyclictest18727-21kworker/1:0+events08:18:581
269059910421040,2cyclictest4167-21kworker/2:2+events09:01:282
269059910381036,2cyclictest30852-21kworker/2:0+events08:44:262
269059910371035,2cyclictest11642-21kworker/2:0+events07:28:222
269089910361034,2cyclictest28500-21kworker/3:1+events09:21:053
268979910341033,1cyclictest1477-21kworker/0:2+events11:42:300
269089910301028,2cyclictest9663-21kworker/3:0+events10:49:373
268979910291028,1cyclictest2316-21kworker/0:0+events12:02:550
269089910271024,3cyclictest27248-21kworker/3:2+events09:49:383
268979910121009,3cyclictest30531-21turbostat10:44:540
269089910041001,3cyclictest21499-21turbostat11:44:563
269089910031000,3cyclictest2929-21turbostat11:59:563
268979910011000,1cyclictest18804-21kworker/0:1+events11:09:050
26897991000997,3cyclictest20770-21turbostat08:19:540
2689799999998,1cyclictest2316-21kworker/0:0+events12:19:260
2689799996995,1cyclictest17231-21kworker/0:0+events11:45:220
2689799995994,1cyclictest16865-21kworker/0:0+events10:26:070
2689799985984,1cyclictest16865-21kworker/0:0+events10:31:300
2689799977975,2cyclictest16865-21kworker/0:0+events11:15:440
2689799976975,1cyclictest22659-21kworker/0:1+events09:50:230
2689799968967,1cyclictest7163-21kworker/0:2+events12:37:390
2690599961958,3cyclictest11680-21turbostat10:24:542
2689799959958,1cyclictest7163-21kworker/0:2+events12:10:440
2689799943942,1cyclictest7163-21kworker/0:2+events12:27:350
2689799937936,1cyclictest26790-21turbostat07:14:550
2690599935932,3cyclictest2647-21turbostat09:39:542
2690299927926,1cyclictest18727-21kworker/1:0+events08:11:161
2690899924921,3cyclictest25510-21turbostat10:39:543
2689799923923,0cyclictest18804-21kworker/0:1+events11:12:140
2690299920919,1cyclictest29072-21kworker/1:1+events10:23:161
2689799916915,1cyclictest16865-21kworker/0:0+events10:59:260
2689799916915,1cyclictest1477-21kworker/0:2+events11:53:040
2689799910909,1cyclictest2316-21kworker/0:0+events11:56:060
2689799909908,1cyclictest7163-21kworker/0:2+events12:34:540
2689799906905,1cyclictest7163-21kworker/0:2+events12:22:020
26902999040,903cyclictest17944-21vmstat09:15:221
26905999030,902cyclictest8645-21xargs10:15:202
2689799901900,1cyclictest17231-21kworker/0:0+events11:39:530
2689799900899,1cyclictest16865-21kworker/0:0+events10:51:470
2689799885883,2cyclictest28867-21turbostat08:39:540
2689799882880,2cyclictest2511-21turbostat07:34:550
2690899879876,3cyclictest11026-21turbostat09:14:553
2690599865862,3cyclictest20759-21turbostat09:24:542
2689799864862,2cyclictest16733-21turbostat08:09:540
2690299863861,2cyclictest26817-21turbostat12:24:561
2689799856854,2cyclictest3062-21turbostat11:24:560
2690599854852,2cyclictest30432-21turbostat11:19:552
2689799685684,1cyclictest12302-21turbostat11:34:550
2689799664663,1cyclictest2805-21turbostat10:49:560
2690899654651,3cyclictest16487-21turbostat09:54:553
2690899653650,3cyclictest8679-21turbostat12:39:563
2690899634630,4cyclictest30432-21turbostat11:19:553
2690299630626,4cyclictest16733-21turbostat08:09:541
2690899617616,1cyclictest15688-21turbostat09:19:553
2690299617614,3cyclictest7081-21turbostat10:19:541
2690899602601,1cyclictest2511-21turbostat07:34:553
2690599583580,3cyclictest28867-21turbostat08:39:552
2689799571570,1cyclictest11680-21turbostat10:24:540
2690899533530,3cyclictest30531-21turbostat10:44:553
2690299523519,4cyclictest25510-21turbostat10:39:541
2690899519518,1cyclictest20770-21turbostat08:19:553
2689799505504,1cyclictest11885-21turbostat09:49:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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