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2026-07-24 - 01:10

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 Thu Jul 23, 2026 00:44:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
213366899314714,3127cyclictest2219469-21kworker/2:0+events23:45:122
213366899311115,3091cyclictest2170674-21kworker/2:1+events21:25:172
213365899285514,2836cyclictest2176613-21kworker/0:2+events21:30:130
213365899280113,2784cyclictest2172026-21kworker/0:0+events21:09:460
213366099279713,2779cyclictest2168704-21kworker/1:1+events21:00:171
213366899272013,2702cyclictest2155770-21kworker/2:1+events20:30:122
213366099272012,2704cyclictest2231304-21kworker/1:1+events00:32:491
21336689927096,2698cyclictest2227994-21kworker/2:1+events00:15:122
213366899270913,2692cyclictest2162392-21kworker/2:0+events20:57:572
213366899269913,2683cyclictest2227343-21kworker/2:2+events00:31:142
213367299269012,2674cyclictest2133149-21kworker/3:2+events19:33:443
213367299268913,2672cyclictest2162572-21kworker/3:1+events20:50:173
213365899266311,2648cyclictest2218052-21kworker/0:2+events00:05:190
213367299264013,2623cyclictest2162572-21kworker/3:1+events20:55:173
213365899261512,2600cyclictest2179872-21kworker/0:1+events21:37:270
213366899260513,2588cyclictest2194134-21kworker/2:0+events22:23:462
213367299258712,2572cyclictest2195870-21kworker/3:0+events22:45:443
213365899258512,2568cyclictest2203814-21kworker/0:2+events23:07:290
213366099258112,2566cyclictest2193987-21kworker/1:1+events22:17:181
213365899257912,2563cyclictest2228283-21kworker/0:1+events00:16:210
213367299257812,2562cyclictest2133149-21kworker/3:2+events19:47:003
213365899257812,2562cyclictest2203814-21kworker/0:2+events22:57:300
213367299257712,2561cyclictest2175063-21kworker/3:1+events21:22:403
213367299257612,2562cyclictest2175063-21kworker/3:1+events21:40:083
213367299257612,2560cyclictest2184541-21kworker/3:1+events22:16:553
213367299257411,2560cyclictest2157402-21kworker/3:0+events20:33:383
213367299257312,2557cyclictest2201925-21kworker/3:2+events23:02:513
213365899257210,2558cyclictest2138334-21kworker/0:0+events19:22:060
213365899257111,2557cyclictest2214877-21kworker/0:1+events23:39:520
213365899257011,2555cyclictest2211596-21kworker/0:1+events23:20:550
213367299256811,2553cyclictest2195870-21kworker/3:0+events22:41:383
213367299256811,2553cyclictest2195870-21kworker/3:0+events22:41:383
213365899256512,2550cyclictest2191249-21kworker/0:1+events22:20:420
213365899256212,2547cyclictest2197149-21kworker/0:2+events22:33:430
213365899256212,2547cyclictest2197149-21kworker/0:2+events22:33:430
213366099255212,2536cyclictest2214820-21kworker/1:2+events23:34:091
213365899254212,2526cyclictest2143264-21kworker/0:2+events19:43:130
213366099253913,2522cyclictest2198068-21kworker/1:1+events22:47:151
213365899253912,2523cyclictest2168674-21kworker/0:0+events20:58:210
213365899253312,2518cyclictest2206587-21kworker/0:1+events23:01:190
213365899253312,2517cyclictest2143264-21kworker/0:2+events19:39:300
213365899253012,2514cyclictest2147418-21kworker/0:0+events20:07:110
213366099252213,2505cyclictest2167100-21kworker/1:2+events21:11:431
213367299252111,2506cyclictest2133149-21kworker/3:2+events19:52:483
213366099251612,2501cyclictest2193987-21kworker/1:1+events22:20:191
213366099251212,2496cyclictest2152851-21kworker/1:1+events20:35:331
213366099250610,2492cyclictest2162363-21kworker/1:0+events20:49:321
21336609925058,2494cyclictest2227727-21kworker/1:2+events00:16:431
213366099250411,2489cyclictest2147915-21kworker/1:2+events20:08:411
213365899250112,2485cyclictest2162544-21kworker/0:2+events20:52:340
21336589924992,2494cyclictest2147418-21kworker/0:0+events20:37:240
213365899249812,2482cyclictest2172026-21kworker/0:0+events21:19:420
213365899249612,2480cyclictest2162544-21kworker/0:2+events20:44:180
213367299249512,2480cyclictest2150011-21kworker/3:0+events20:03:293
213367299249512,2479cyclictest2171862-21kworker/3:1+events21:10:563
213367299249512,2479cyclictest2136919-21kworker/3:1+events19:19:503
213365899249412,2479cyclictest2232489-21kworker/0:2+events00:26:140
213365899249412,2478cyclictest2197149-21kworker/0:2+events22:26:500
213365899249412,2478cyclictest2138334-21kworker/0:0+events19:31:510
213367299249312,2479cyclictest2233052-21kworker/3:1+events00:35:063
213367299249312,2478cyclictest2224207-21kworker/3:2+events00:00:233
213367299249311,2479cyclictest2162572-21kworker/3:1+events20:47:193
213366099249212,2477cyclictest2167100-21kworker/1:2+events21:07:311
213365899249212,2477cyclictest2159085-21kworker/0:2+events20:32:530
213365899249212,2476cyclictest2228283-21kworker/0:1+events00:22:230
213367299249112,2475cyclictest2219397-21kworker/3:1+events23:46:213
213366099249112,2476cyclictest2147915-21kworker/1:2+events20:00:461
213367299249012,2474cyclictest2189347-21kworker/3:0+events22:05:353
213367299249012,2474cyclictest2138526-21kworker/3:0+events19:28:073
213367299248912,2473cyclictest2231447-21kworker/3:2+events00:33:353
213367299248910,2475cyclictest2184541-21kworker/3:1+events22:23:243
213367299248910,2475cyclictest2152575-21kworker/3:2+events20:08:193
21336689924876,2478cyclictest2175079-21kworker/2:0+events21:21:332
213366899248612,2470cyclictest2227343-21kworker/2:2+events00:13:432
213365899248611,2472cyclictest2174989-21kworker/0:1+events21:23:480
213365899248611,2471cyclictest2214877-21kworker/0:1+events23:33:020
213365899248512,2470cyclictest2140338-21kworker/0:1+events19:53:120
213365899248512,2469cyclictest2208363-21kworker/0:0+events23:27:220
213365899248412,2468cyclictest2222464-21kworker/0:1+events23:53:340
213367299248112,2465cyclictest2162572-21kworker/3:1+events20:44:403
213367299248112,2465cyclictest2143334-21kworker/3:0+events19:43:363
213366899248112,2466cyclictest2210088-21kworker/2:2+events23:14:222
213366899248112,2466cyclictest2162392-21kworker/2:0+events20:46:582
213365899248111,2466cyclictest2176613-21kworker/0:2+events21:48:550
213367299248012,2464cyclictest2154156-21kworker/3:0+events20:14:223
21336589924809,2468cyclictest2197149-21kworker/0:2+events22:44:370
21336589924809,2468cyclictest2197149-21kworker/0:2+events22:44:360
213365899248012,2465cyclictest2214877-21kworker/0:1+events23:44:030
213365899248011,2465cyclictest2147418-21kworker/0:0+events20:22:420
213365899247910,2466cyclictest2203814-21kworker/0:2+events23:12:280
213365899247910,2465cyclictest2167070-21kworker/0:1+events21:02:570
213366899247812,2460cyclictest2143297-21kworker/2:0+events19:51:382
213365899247812,2462cyclictest2191249-21kworker/0:1+events22:12:050
213365899247810,2465cyclictest2228283-21kworker/0:1+events00:36:580
213365899247712,2462cyclictest2181576-21kworker/0:0+events21:57:160
213365899247612,2461cyclictest2147418-21kworker/0:0+events20:26:080
213366899247510,2461cyclictest2189304-21kworker/2:2+events22:09:252
213366099247512,2460cyclictest2152851-21kworker/1:1+events20:25:451
213366899247411,2461cyclictest2203535-21kworker/2:0+events22:55:582
213365899247311,2458cyclictest2178267-21kworker/0:0+events21:29:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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