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2026-07-12 - 09:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, slot #5

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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  Phytec
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.

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 rackbslot5s.osadl.org (updated Sun Jul 12, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2768345995240,10cyclictest311ktimers/219:10:122
2768345995136,12cyclictest311ktimers/200:30:122
2768338995142,6cyclictest2799792-21sendmail20:40:010
2768341995039,8cyclictest2877102-21kworker/u8:2+events_unbound00:25:121
2768349994841,4cyclictest2830685-21cron22:10:013
2768345994532,4cyclictest2813398-21kworker/u8:2+events_unbound21:32:462
2768341994536,6cyclictest2779503-21fschecks_count19:40:151
2768341994531,11cyclictest231ktimers/100:05:121
2768338994537,5cyclictest2769974-21munin-plugin-st19:15:000
2768349994330,8cyclictest2792964-21sendmail20:20:003
2768345994337,4cyclictest2806526-21kworker/u8:0+events_unbound21:02:432
2768345994328,11cyclictest311ktimers/221:10:132
2768345994236,4cyclictest2865002-21kworker/u8:1+events_unbound00:02:592
2768345994236,4cyclictest2773969-21kworker/u8:0+events_unbound19:27:362
2768345994229,4cyclictest131rcu_preempt22:35:522
2768345994135,4cyclictest2820386-21kworker/u8:2+events_unbound21:47:462
2768345994118,10cyclictest2861706-21kworker/u8:2-events_unbound23:46:022
2768349994033,4cyclictest2789125-21unixbench_singl20:05:263
2768349994033,4cyclictest2789125-21unixbench_singl20:05:263
2768345994034,4cyclictest2845956-21kworker/u8:1+events_unbound22:57:532
2768345994016,10cyclictest0-21swapper/223:36:422
2768345993931,5cyclictest2789116-21grep20:05:262
2768345993931,5cyclictest2789116-21grep20:05:262
2768345993929,7cyclictest2834114-21sendmail22:20:002
2768345993921,4cyclictest2845956-21kworker/u8:1-events_freezable_power_23:09:382
2768345993918,10cyclictest131rcu_preempt23:04:482
2768349993826,8cyclictest0-21swapper/321:22:443
2768345993818,4cyclictest0-21swapper/222:00:552
2768345993815,5cyclictest2809681-21kworker/u8:3-writeback21:08:122
2768341993830,4cyclictest0-21swapper/123:35:001
2768345993731,4cyclictest2833743-21kworker/u8:2+events_unbound22:48:402
2768345993731,4cyclictest2833743-21kworker/u8:2+events_unbound22:48:402
2768345993726,7cyclictest2876752-21grep00:20:282
2768345993726,7cyclictest0-21swapper/220:50:262
2768345993726,6cyclictest2812968-21grep21:15:292
2768345993726,4cyclictest131rcu_preempt22:10:332
2768345993722,5cyclictest2873617-21kworker/u8:1-events_freezable_power_00:17:482
2768345993722,4cyclictest131rcu_preempt23:32:042
2768345993722,4cyclictest131rcu_preempt21:35:422
2768345993720,5cyclictest131rcu_preempt23:57:112
2768345993720,3cyclictest0-21swapper/223:18:262
2768345993719,10cyclictest131rcu_preempt20:29:422
2768345993716,10cyclictest131rcu_preempt23:24:172
2768349993625,7cyclictest0-21swapper/320:25:003
2768349993625,6cyclictest0-21swapper/322:20:003
2768345993628,4cyclictest2878459-21unixbench_singl00:25:252
2768345993626,5cyclictest0-21swapper/219:32:342
2768345993622,6cyclictest2861706-21kworker/u8:2+events_unbound23:53:262
2768341993625,7cyclictest2852667-21grep23:10:261
2768338993628,4cyclictest2868632-21auditctl00:00:010
2768338993628,4cyclictest0-21swapper/019:25:010
276833899361,4cyclictest131rcu_preempt23:05:130
2768349993528,4cyclictest2840910-21cron22:40:003
2768349993525,6cyclictest0-21swapper/300:10:003
2768345993525,7cyclictest2839216-21auditctl22:35:002
2768345993522,4cyclictest131rcu_preempt22:26:162
2768345993521,4cyclictest131rcu_preempt19:56:542
2768345993518,3cyclictest0-21swapper/222:23:382
2768345993517,4cyclictest131rcu_preempt22:53:112
2768345993517,3cyclictest0-21swapper/222:41:522
2768345993516,4cyclictest131rcu_preempt23:13:442
2768345993515,10cyclictest131rcu_preempt20:41:302
2768341993524,7cyclictest2882293-21sendmail00:40:001
2768349993424,6cyclictest0-21swapper/322:10:233
2768349993424,6cyclictest0-21swapper/321:15:003
2768349993423,7cyclictest0-21swapper/321:25:253
2768345993428,4cyclictest2869983-21kworker/u8:3+events_unbound00:14:422
2768345993425,5cyclictest0-21swapper/219:20:272
2768345993420,4cyclictest131rcu_preempt19:18:502
2768345993420,4cyclictest131rcu_preempt00:05:032
2768345993418,9cyclictest131rcu_preempt20:37:002
2768345993418,9cyclictest131rcu_preempt20:15:112
2768345993417,5cyclictest131rcu_preempt22:08:162
2768345993417,4cyclictest131rcu_preempt21:52:412
2768345993417,4cyclictest131rcu_preempt20:04:182
2768345993417,4cyclictest131rcu_preempt19:53:532
2768345993417,4cyclictest131rcu_preempt00:38:492
2768345993415,11cyclictest131rcu_preempt19:36:422
276833899341,5cyclictest131rcu_preempt21:30:130
2768349993324,6cyclictest0-21swapper/319:20:273
2768349993323,6cyclictest0-21swapper/321:15:193
2768349993323,6cyclictest0-21swapper/320:55:273
2768345993323,7cyclictest2794202-21grep20:20:272
2768345993322,4cyclictest131rcu_preempt21:26:252
2768345993319,4cyclictest131rcu_preempt21:42:202
2768345993319,4cyclictest131rcu_preempt20:30:302
2768345993318,4cyclictest131rcu_preempt20:59:182
2768345993318,4cyclictest131rcu_preempt19:41:122
2768345993314,9cyclictest131rcu_preempt23:25:092
2768345993311,5cyclictest131rcu_preempt21:25:012
2768341993326,4cyclictest0-21swapper/122:10:241
2768341993325,5cyclictest2813009-21unixbench_singl21:15:291
2768338993326,4cyclictest2785920-21sendmail20:00:010
276833899331,29cyclictest0-21swapper/019:35:130
2768349993223,5cyclictest0-21swapper/323:15:273
2768349993221,7cyclictest0-21swapper/319:10:263
2768345993218,4cyclictest131rcu_preempt20:13:022
2768345993215,4cyclictest131rcu_preempt19:49:352
2768341993226,3cyclictest0-21swapper/121:35:241
2768341993225,5cyclictest2857892-21kworker/u8:0+events_unbound23:27:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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