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2025-12-19 - 21:36

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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 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 792 highest latencies:
System rack2slot7s.osadl.org (updated Fri Dec 19, 2025 07:55:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3125114996440,7cyclictest3004496-21cups-browsed06:20:011
3125113996354,6cyclictest3433144-21execl05:49:460
3125114995951,5cyclictest3938483-21sh06:10:021
3125114995951,5cyclictest3938483-21sh06:10:021
3125114995744,6cyclictest1165-21mta-sts-daemon05:09:431
3125113995639,13cyclictest3931892-21sh06:09:420
3125113995639,13cyclictest3931892-21sh06:09:420
3125113995546,7cyclictest3347323-21sh05:39:460
3125114995345,5cyclictest3422899-21sh05:43:111
3125115995244,5cyclictest3938887-21sh06:10:032
3125115995244,5cyclictest3938887-21sh06:10:032
3125114995243,5cyclictest3433144-21execl05:49:461
3125114995042,5cyclictest3982503-21tee06:11:441
3125113995036,11cyclictest3984003-21sh06:11:470
3125115994842,3cyclictest0-21swapper/205:50:572
3125113994836,10cyclictest3434348-21execl05:50:570
3125115994739,5cyclictest4005431-21sh06:12:382
3125115994739,5cyclictest3392578-21sh05:41:562
3125114994630,12cyclictest0-21swapper/105:34:431
3125115994535,8cyclictest3131277-21sh05:25:012
312511399453,35cyclictest3285207-21spawn05:34:450
3125114994435,6cyclictest4022279-21systemd-run06:40:011
3125113994432,10cyclictest3426038-21sh05:43:180
3125115994336,3cyclictest0-21swapper/205:49:472
3125114994335,5cyclictest3344732-21sort05:39:351
312511599411,34cyclictest3132110-21pipe05:29:482
312511599411,34cyclictest3132110-21pipe05:29:482
3125113994126,11cyclictest0-21swapper/006:02:330
3125115994033,4cyclictest3576602-21spawn06:03:272
3125115994032,5cyclictest3350752-21rm05:40:012
3125114993931,5cyclictest3707771-21spawn06:03:511
3125114993931,5cyclictest3128010-21unixbench05:15:001
3125114993928,9cyclictest3130627-21needreboot05:24:401
3125115993731,2cyclictest0-21swapper/206:25:012
3125113993630,3cyclictest0-21swapper/005:20:010
3125115993527,5cyclictest3436839-21awk05:59:462
3125114993527,5cyclictest0-21swapper/105:50:241
3125115993426,5cyclictest3275401-21spawn05:34:402
3125113993429,2cyclictest0-21swapper/005:56:130
3125115993327,4cyclictest3118682-21kworker/u8:14+xprtiod05:20:002
3125115993324,6cyclictest3126561-21grep05:10:012
3125115993123,5cyclictest4019070-21timerandwakeup06:29:522
3125114993020,7cyclictest3435934-21fstime05:56:271
3125115992922,4cyclictest0-21swapper/205:15:002
312511499292,21cyclictest369-21systemd-journal05:28:261
312511499292,21cyclictest369-21systemd-journal05:28:261
3125114992919,7cyclictest3129532-21timerwakeupswit05:19:501
3125113992924,3cyclictest3131146-21grep05:24:520
3125113992922,4cyclictest4016414-21systemd-run06:20:010
3125115992823,2cyclictest0-21swapper/206:40:012
312511599281,21cyclictest4016380-21awk06:20:012
3125114992819,6cyclictest0-21swapper/106:25:011
3125113992822,4cyclictest3132803-21grep05:30:000
3125113992822,4cyclictest3132803-21grep05:30:000
3125113992812,9cyclictest151ktimers/006:24:450
3125115992719,5cyclictest4020688-21unixbench_multi06:34:502
312511499268,15cyclictest271ktimers/106:34:431
3125113992615,9cyclictest0-21swapper/006:29:370
3125113992613,10cyclictest0-21swapper/006:39:460
3125114992516,6cyclictest4018413-21fschecks_count06:29:371
312511399253,18cyclictest714-21gmain05:09:460
3125113992417,5cyclictest3127110-21uniq05:14:350
3125113992414,7cyclictest4020688-21unixbench_multi06:34:500
3125115992015,2cyclictest0-21swapper/205:05:012
312511399201,15cyclictest3125071-21munin-run05:05:010
312511699172,8cyclictest0-21swapper/306:09:423
312511699172,8cyclictest0-21swapper/306:09:423
312511499171,12cyclictest3125234-21latency_hist05:05:021
312511699162,8cyclictest0-21swapper/305:39:443
312511699161,9cyclictest0-21swapper/305:49:463
312511699153,7cyclictest0-21swapper/306:11:163
312511699152,8cyclictest0-21swapper/305:59:563
312511699151,7cyclictest0-21swapper/305:34:433
312511699142,5cyclictest0-21swapper/306:29:433
312511699142,4cyclictest0-21swapper/305:09:403
312511699141,6cyclictest0-21swapper/306:34:423
312511699141,6cyclictest0-21swapper/306:24:433
312511699141,6cyclictest0-21swapper/305:14:433
312511699132,6cyclictest0-21swapper/306:00:093
312511699132,6cyclictest0-21swapper/305:40:413
312511699131,7cyclictest0-21swapper/305:50:093
312511699122,5cyclictest0-21swapper/306:20:023
312511699121,6cyclictest0-21swapper/305:27:563
312511699121,6cyclictest0-21swapper/305:27:563
312511699121,6cyclictest0-21swapper/305:24:443
312511699101,5cyclictest0-21swapper/306:39:443
31251169981,5cyclictest0-21swapper/305:19:433
31251169961,4cyclictest0-21swapper/305:05:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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