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2026-05-05 - 05:56

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 Tue May 05, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23356719931606,3150cyclictest2356239-21kworker/3:2+events20:20:003
233565899314615,3127cyclictest2337072-21kworker/1:0+events19:20:141
233566399285013,2832cyclictest2412882-21kworker/2:2+events23:10:162
233565599284714,2828cyclictest2430433-21kworker/0:1+events00:05:170
233565599283013,2812cyclictest2419209-21kworker/0:0+events23:35:150
233565599280713,2791cyclictest2352031-21kworker/0:0+events20:02:030
233567199280412,2787cyclictest2361739-21kworker/3:0+events20:30:203
23356559927878,2774cyclictest2363397-21kworker/0:1+events20:35:120
23356559927813,2774cyclictest2371225-21kworker/0:0+events21:13:580
233567199273012,2714cyclictest2377677-21kworker/3:0+events21:23:263
233565899270413,2686cyclictest2388471-21kworker/1:0+events21:55:111
233565899269713,2680cyclictest2422395-21kworker/1:1+events23:40:171
233565599269513,2680cyclictest2374480-21kworker/0:1+events21:15:080
233565599269012,2674cyclictest2365097-21kworker/0:2+events20:57:190
233565599268611,2671cyclictest2378339-21kworker/0:0+events21:26:080
233565599267713,2661cyclictest2332017-21kworker/0:0+events19:31:210
233565899267513,2658cyclictest2341982-21kworker/1:2+events19:26:401
233567199267411,2659cyclictest2412854-21kworker/3:1+events23:20:193
233567199266713,2650cyclictest2331998-21kworker/3:1+events19:15:173
23356559926534,2645cyclictest2390338-21kworker/0:2+events22:05:090
233567199260712,2591cyclictest2351759-21kworker/3:1+events19:59:003
233565599258112,2565cyclictest2348505-21kworker/0:2+events19:49:490
233567199257612,2561cyclictest2366623-21kworker/3:2+events20:46:363
233565599257612,2561cyclictest2412697-21kworker/0:2+events23:12:080
233565599257612,2560cyclictest2369620-21kworker/0:1+events21:02:410
233566399257512,2560cyclictest2401336-21kworker/2:0+events22:35:422
233565899257512,2561cyclictest2401518-21kworker/1:1+events22:40:171
233567199257412,2558cyclictest2393302-21kworker/3:0+events22:21:113
233565599257412,2559cyclictest2390338-21kworker/0:2+events22:03:130
23356559925729,2559cyclictest2358099-21kworker/0:1+events20:22:170
233565599257212,2556cyclictest2427034-21kworker/0:2+events23:58:270
233565599257212,2556cyclictest2427034-21kworker/0:2+events23:58:260
233567199257112,2556cyclictest2372729-21kworker/3:1+events21:17:013
233566399257012,2554cyclictest2406771-21kworker/2:2+events23:00:232
233567199256811,2553cyclictest2403209-21kworker/3:0+events23:03:513
233566399256611,2551cyclictest2339001-21kworker/2:0+events19:28:362
233565599256612,2550cyclictest2382173-21kworker/0:1+events21:55:580
233565599256612,2550cyclictest2332017-21kworker/0:0+events19:50:350
233567199256412,2549cyclictest2420812-21kworker/3:1+events23:34:063
233565599256312,2548cyclictest2382173-21kworker/0:1+events21:32:550
233565599256312,2547cyclictest2405161-21kworker/0:2+events22:47:590
233565599255912,2544cyclictest2438459-21kworker/0:1+events00:29:100
233565599255812,2542cyclictest2353700-21kworker/0:1+events20:07:510
233565599255712,2541cyclictest2332017-21kworker/0:0+events19:41:550
233567199255612,2540cyclictest2422453-21kworker/3:2+events23:58:493
233567199255612,2540cyclictest2422453-21kworker/3:2+events23:58:493
233565599255411,2539cyclictest2348505-21kworker/0:2+events20:18:280
233565599255312,2537cyclictest2382173-21kworker/0:1+events21:49:360
233565599255311,2539cyclictest2399737-21kworker/0:0+events22:37:580
233567199254912,2533cyclictest2435055-21kworker/3:1+events00:18:503
233565599254912,2534cyclictest2386996-21kworker/0:2+events21:50:410
233566399254812,2532cyclictest2387114-21kworker/2:2+events22:30:452
233565599254812,2533cyclictest2372878-21kworker/0:2+events21:08:200
233567199254212,2526cyclictest2364999-21kworker/3:0+events20:42:003
23356719925399,2526cyclictest2336986-21kworker/3:0+events19:23:403
233567199253512,2520cyclictest2422453-21kworker/3:2+events00:37:393
233565599253212,2517cyclictest2382173-21kworker/0:1+events22:22:210
233565599252812,2514cyclictest2420968-21kworker/0:1+events23:50:080
233565599252312,2507cyclictest2414357-21kworker/0:1+events23:23:010
233565599252212,2506cyclictest2365097-21kworker/0:2+events20:45:500
233567199252112,2505cyclictest2416074-21kworker/3:0+events23:25:213
233565899251812,2503cyclictest2417483-21kworker/1:2+events23:22:151
233567199251612,2501cyclictest2381113-21kworker/3:2+events22:03:353
233567199251212,2497cyclictest2358165-21kworker/3:0+events20:21:543
233565599251111,2497cyclictest2359812-21kworker/0:0+events20:29:090
233565599251111,2496cyclictest2399737-21kworker/0:0+events22:55:500
233565599250212,2486cyclictest2363397-21kworker/0:1+events20:41:380
233566399250111,2486cyclictest2377099-21kworker/2:1+events21:25:202
23356719925009,2488cyclictest2422453-21kworker/3:2+events23:45:323
23356589925006,2490cyclictest2350337-21kworker/1:2+events20:08:121
233567199249812,2482cyclictest2342288-21kworker/3:1+events19:34:213
233565899249812,2483cyclictest2375016-21kworker/1:2+events21:24:561
233567199249714,2479cyclictest2381113-21kworker/3:2+events21:44:403
233567199249712,2482cyclictest2416074-21kworker/3:0+events23:44:253
233567199249512,2479cyclictest2403209-21kworker/3:0+events22:50:163
233566399249511,2480cyclictest2434963-21kworker/2:2+events00:19:582
23356559924957,2486cyclictest2423748-21kworker/0:2+events23:45:110
233565599249512,2480cyclictest2428695-21kworker/0:0+events00:23:040
233565599249512,2480cyclictest2414357-21kworker/0:1+events23:17:450
233567199249412,2478cyclictest2396513-21kworker/3:2+events22:39:313
233565599249412,2480cyclictest2419209-21kworker/0:0+events23:30:140
233565599249412,2478cyclictest2359812-21kworker/0:0+events20:31:300
233567199249312,2478cyclictest2433423-21kworker/3:0+events00:14:233
233567199249312,2478cyclictest2433423-21kworker/3:0+events00:14:233
233567199249312,2477cyclictest2383713-21kworker/3:0+events21:37:073
233565599249312,2478cyclictest2440067-21kworker/0:0+events00:33:220
233567199249212,2476cyclictest2391603-21kworker/3:1+events22:17:243
233567199249212,2476cyclictest2343971-21kworker/3:2+events19:38:073
233565599249212,2477cyclictest2348505-21kworker/0:2+events19:59:470
233565599249212,2476cyclictest2432063-21kworker/0:2+events00:14:440
233565599249212,2476cyclictest2432063-21kworker/0:2+events00:14:440
233565599249212,2476cyclictest2420968-21kworker/0:1+events23:44:020
233565599249212,2476cyclictest2399737-21kworker/0:0+events23:06:030
233565599249112,2476cyclictest2399737-21kworker/0:0+events23:01:310
233565599249112,2476cyclictest2365097-21kworker/0:2+events20:53:060
233565899249012,2475cyclictest2343602-21kworker/1:1+events19:57:061
233565599249012,2475cyclictest2382173-21kworker/0:1+events22:16:350
233565599249010,2476cyclictest2385401-21kworker/0:0+events21:44:170
233565599248912,2474cyclictest2337133-21kworker/0:1+events19:19:280
233567199248712,2472cyclictest2426903-21kworker/3:0+events00:04:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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