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2025-11-13 - 05:51

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 50 highest latencies:
System rackfslot7s.osadl.org (updated Wed Nov 12, 2025 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
350149499298313,2966cyclictest3565154-21kworker/0:0+events22:45:000
350150499278813,2771cyclictest3590111-21kworker/3:1+events23:45:193
350150199273513,2720cyclictest3574446-21kworker/2:2+events22:55:212
350149899267413,2657cyclictest3606261-21kworker/1:2+events00:35:181
350149499264613,2629cyclictest3519342-21kworker/0:0+events20:10:130
35014989926275,2618cyclictest3569799-21kworker/1:2+events23:15:181
350149499257412,2559cyclictest3509368-21kworker/0:1+events19:55:140
350150199256612,2550cyclictest3542322-21kworker/2:2+events21:37:152
350149499255212,2537cyclictest3588866-21kworker/0:1+events23:47:570
350149899253512,2520cyclictest3561860-21kworker/1:2+events22:20:151
350150199249712,2481cyclictest3536276-21kworker/2:1+events20:56:492
350149899249612,2481cyclictest3566369-21kworker/1:1+events22:33:161
350149899249512,2480cyclictest3507918-21kworker/1:1+events19:33:131
350150499249412,2479cyclictest3556769-21kworker/3:2+events22:03:083
350150499249212,2478cyclictest3594948-21kworker/3:0+events00:00:103
350150499249212,2477cyclictest3601653-21kworker/3:2+events00:21:313
350149899249212,2477cyclictest3567981-21kworker/1:0+events22:36:421
350149499249112,2477cyclictest3553751-21kworker/0:0+events22:05:040
350150499248912,2474cyclictest3537311-21kworker/3:0+events21:08:133
350149899248911,2475cyclictest3534322-21kworker/1:0+events20:58:391
350149499248810,2474cyclictest3548668-21kworker/0:1+events21:43:390
350149899248712,2472cyclictest3507918-21kworker/1:1+events19:47:591
350149499248412,2468cyclictest3594886-21kworker/0:1+events00:12:250
350149499248411,2469cyclictest3594886-21kworker/0:1+events00:02:490
350149499248311,2469cyclictest3519342-21kworker/0:0+events20:01:470
350149499248111,2467cyclictest3561743-21kworker/0:1+events22:14:130
350149499247712,2461cyclictest3539055-21kworker/0:2+events21:04:010
350149499247411,2460cyclictest3576032-21kworker/0:2+events23:07:400
350149499247411,2460cyclictest3543930-21kworker/0:2+events21:25:450
350149899246112,2445cyclictest3556509-21kworker/1:0+events22:01:591
350149899246011,2447cyclictest3580929-21kworker/1:1+events23:20:131
350149499245610,2442cyclictest3583880-21kworker/0:2+events23:25:350
350149499245412,2439cyclictest3527421-21kworker/0:2+events20:54:330
350149499245412,2438cyclictest3553751-21kworker/0:0+events22:15:430
350150499245211,2438cyclictest3535685-21kworker/3:2+events21:04:493
350149499241910,2405cyclictest3539055-21kworker/0:2+events21:06:200
35014949924137,2402cyclictest3543930-21kworker/0:2+events21:34:340
350150199240212,2386cyclictest3522553-21kworker/2:2+events20:23:212
350149899239212,2376cyclictest3604620-21kworker/1:1+events00:26:291
350150499239110,2379cyclictest3537311-21kworker/3:0+events21:10:083
350150499238812,2372cyclictest3527486-21kworker/3:1+events20:40:273
350150499238812,2372cyclictest3527486-21kworker/3:1+events20:40:273
350150199238511,2371cyclictest3579021-21kworker/2:1+events23:19:512
350150499238111,2366cyclictest3568041-21kworker/3:0+events22:33:383
350150499236012,2344cyclictest3543783-21kworker/3:2+events21:35:203
350149899235512,2339cyclictest3534322-21kworker/1:0+events20:54:121
350149499235310,2340cyclictest3552015-21kworker/0:2+events21:46:200
350150199235012,2334cyclictest3574446-21kworker/2:2+events23:01:112
350150499234512,2329cyclictest3522491-21kworker/3:1+events20:15:523
350149499234511,2331cyclictest3561743-21kworker/0:1+events22:25:550
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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