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2026-04-12 - 08:32

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #f, slot #7

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.
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.

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 rackfslot7s.osadl.org (updated Sun Apr 12, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39882999935437,3530cyclictest4060266-21kworker/0:1+events23:05:200
398830799340616,3383cyclictest4045689-21kworker/2:2+events22:25:012
398829999309413,3075cyclictest4043874-21kworker/0:1+events22:05:140
398829999293615,2917cyclictest3991571-21kworker/0:0+events19:20:100
398830299286110,2846cyclictest4076846-21kworker/1:2+events00:05:181
398830999277812,2763cyclictest4071616-21kworker/3:1+events23:30:183
398830999276713,2749cyclictest4034767-21kworker/3:3+events22:00:123
398830999275513,2736cyclictest4034374-21kworker/3:1+events21:35:123
398830999269713,2680cyclictest4013968-21kworker/3:1+events20:30:243
398830799267713,2660cyclictest4023563-21kworker/2:0+events21:00:172
398829999266713,2651cyclictest4078480-21kworker/0:0+events00:00:010
398829999266312,2648cyclictest4034432-21kworker/0:0+events21:40:120
398829999263913,2624cyclictest4072891-21kworker/0:1+events23:35:150
398830799263812,2623cyclictest4084844-21kworker/2:1+events00:09:022
398830799259212,2577cyclictest3997916-21kworker/2:0+events20:04:442
398829999259211,2577cyclictest4072891-21kworker/0:1+events23:40:130
398829999257010,2556cyclictest4060266-21kworker/0:1+events22:56:540
398830299255612,2540cyclictest4014082-21kworker/1:0+events20:32:201
398829999254712,2531cyclictest4015632-21kworker/0:2+events20:40:200
39882999925425,2533cyclictest4020074-21kworker/0:0+events20:46:180
398829999253412,2518cyclictest4041030-21kworker/0:0+events21:55:150
39882999925299,2516cyclictest4086415-21kworker/0:1+events00:32:120
398829999252912,2513cyclictest4036123-21kworker/0:2+events21:54:520
398829999252612,2510cyclictest4043874-21kworker/0:1+events22:01:210
398829999252611,2511cyclictest4086415-21kworker/0:1+events00:25:440
398829999250812,2494cyclictest3993283-21kworker/0:1+events19:25:050
398830999250612,2491cyclictest4078267-21kworker/3:1+events00:17:033
398830799249912,2483cyclictest4039468-21kworker/2:0+events21:51:322
398829999249711,2483cyclictest4045481-21kworker/0:0+events22:14:190
398830799249612,2481cyclictest4071402-21kworker/2:2+events23:46:402
398830799249212,2476cyclictest4062079-21kworker/2:0+events22:59:592
398830999249112,2476cyclictest3999389-21kworker/3:2+events19:55:583
398830999249011,2475cyclictest4053868-21kworker/3:1+events22:46:143
398829999248912,2474cyclictest4084816-21kworker/0:2+events00:09:480
398830999248712,2471cyclictest4029961-21kworker/3:2+events21:28:433
398830799248512,2470cyclictest4001202-21kworker/2:1+events19:52:292
398830999248412,2468cyclictest4078267-21kworker/3:1+events23:58:543
398830999248312,2468cyclictest4078267-21kworker/3:1+events00:13:583
398830999248311,2469cyclictest4089947-21kworker/3:1+events00:29:543
398830999248212,2466cyclictest4078267-21kworker/3:1+events00:00:473
398830999248112,2465cyclictest4078267-21kworker/3:1+events23:47:483
398830999248010,2466cyclictest4040888-21kworker/3:0+events21:56:233
398830999247912,2464cyclictest4015602-21kworker/3:0+events20:40:413
398830799247912,2464cyclictest4060355-21kworker/2:2+events22:53:522
398830799247910,2466cyclictest4065575-21kworker/2:0+events23:15:552
398830799247810,2465cyclictest4034488-21kworker/2:2+events21:46:362
398829999247412,2458cyclictest4026635-21kworker/0:0+events21:18:540
39882999924738,2462cyclictest4078480-21kworker/0:0+events00:15:540
398830999247011,2456cyclictest4052003-21kworker/3:2+events22:32:093
398829999246711,2454cyclictest3995669-21kworker/0:2+events19:35:020
398830999246310,2450cyclictest4047077-21kworker/3:1+events22:27:143
398830999245612,2440cyclictest4060296-21kworker/3:0+events22:58:513
398829999245612,2440cyclictest4007522-21kworker/0:1+events20:10:310
398829999245511,2440cyclictest4032827-21kworker/0:1+events21:31:260
398830999245310,2440cyclictest4007555-21kworker/3:0+events20:22:013
398829999245212,2436cyclictest4025036-21kworker/0:2+events21:04:280
398829999244912,2433cyclictest4004235-21kworker/0:0+events20:09:430
398830999244811,2434cyclictest4068394-21kworker/3:2+events23:43:383
398830799244812,2432cyclictest4028209-21kworker/2:1+events21:15:512
39882999924489,2435cyclictest4086415-21kworker/0:1+events00:36:220
398829999244812,2432cyclictest4068334-21kworker/0:2+events23:19:220
398829999244711,2432cyclictest4060266-21kworker/0:1+events23:22:430
398829999244711,2432cyclictest4060266-21kworker/0:1+events23:22:430
398829999244710,2433cyclictest4026635-21kworker/0:0+events21:13:350
39883099924468,2435cyclictest4020479-21kworker/3:1+events20:54:143
398829999244512,2430cyclictest4025036-21kworker/0:2+events21:07:540
398829999244512,2429cyclictest4029873-21kworker/0:2+events21:27:370
398829999244412,2429cyclictest4061896-21kworker/0:2+events23:10:380
398829999244411,2430cyclictest4009947-21kworker/0:2+events20:16:380
398829999244411,2429cyclictest4036123-21kworker/0:2+events21:39:010
398829999244312,2427cyclictest4002624-21kworker/0:1+events20:02:260
398829999244311,2429cyclictest4017584-21kworker/0:1+events20:55:450
398829999244212,2427cyclictest4072891-21kworker/0:1+events23:34:080
398829999244112,2426cyclictest4060266-21kworker/0:1+events22:51:580
398829999244011,2426cyclictest4076725-21kworker/0:2+events23:51:180
398830999243910,2426cyclictest3993166-21kworker/3:1+events19:27:453
398829999243912,2424cyclictest4007522-21kworker/0:1+events20:22:240
398829999243812,2422cyclictest4050436-21kworker/0:0+events22:42:490
39882999924369,2424cyclictest4000994-21kworker/0:0+events19:49:310
398829999243510,2421cyclictest4088017-21kworker/0:2+events00:20:480
398830999243312,2417cyclictest4034767-21kworker/3:3+events21:46:593
398830999243012,2414cyclictest3997765-21kworker/3:1+events19:41:523
398829999242912,2412cyclictest3993283-21kworker/0:1+events19:44:100
398829999242911,2414cyclictest4047108-21kworker/0:1+events22:22:200
398830999242811,2414cyclictest4029961-21kworker/3:2+events21:21:123
398829999242711,2412cyclictest4060266-21kworker/0:1+events23:02:410
398830999242612,2410cyclictest4053868-21kworker/3:1+events22:50:503
398830999242412,2409cyclictest4092706-21kworker/3:0+events00:35:593
398830999242212,2406cyclictest3991537-21kworker/3:2+events19:18:393
398830799242212,2406cyclictest4002844-21kworker/2:2+events19:59:472
398830299241412,2400cyclictest4058961-21kworker/1:2+events22:52:431
398830999241212,2397cyclictest4007555-21kworker/3:0+events20:11:153
398830799240611,2391cyclictest4053896-21kworker/2:2+events22:38:132
39883099924049,2392cyclictest4029961-21kworker/3:2+events21:31:023
398830799240412,2388cyclictest4023563-21kworker/2:0+events21:12:522
398830799240310,2390cyclictest4069779-21kworker/2:1+events23:21:582
398830799240310,2390cyclictest4069779-21kworker/2:1+events23:21:572
398829999240311,2389cyclictest4012097-21kworker/0:0+events20:33:540
398830999240212,2387cyclictest4034767-21kworker/3:3+events21:54:283
398830799240212,2386cyclictest4060355-21kworker/2:2+events23:03:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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