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2025-11-14 - 06:23

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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 50 highest latencies:
System rack0slot1s.osadl.org (updated Fri Nov 14, 2025 00:45:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2059699128127,1cyclictest0-21swapper/719:11:117
2058999128126,1cyclictest0-21swapper/622:48:006
2055299128128,0cyclictest3-21ksoftirqd/022:04:050
2058999127124,2cyclictest0-21swapper/622:22:396
20589991270,1cyclictest0-21swapper/619:12:026
2059699126125,1cyclictest0-21swapper/700:39:307
20589991260,1cyclictest0-21swapper/621:47:456
2057199126125,0cyclictest37-21ksoftirqd/321:23:073
2059699125124,1cyclictest0-21swapper/721:30:217
2059699125123,1cyclictest0-21swapper/722:20:387
20589991250,124cyclictest0-21swapper/621:57:536
2057799125122,2cyclictest0-21swapper/423:47:574
20577991250,124cyclictest0-21swapper/423:43:544
2057199125125,0cyclictest37-21ksoftirqd/319:11:113
2059699124123,1cyclictest0-21swapper/700:08:487
2059699124122,1cyclictest0-21swapper/721:22:107
2057199124124,0cyclictest37-21ksoftirqd/300:39:293
2055299124122,1cyclictest3-21ksoftirqd/021:00:360
2059699123122,1cyclictest0-21swapper/723:02:467
2058999123121,1cyclictest0-21swapper/619:16:306
2059699122121,1cyclictest0-21swapper/719:49:237
2057799122119,2cyclictest0-21swapper/419:32:204
20577991220,121cyclictest0-21swapper/423:50:354
2057199122122,0cyclictest37-21ksoftirqd/322:20:383
2057199122122,0cyclictest37-21ksoftirqd/321:30:203
2057199122122,0cyclictest37-21ksoftirqd/300:08:493
2058999121119,1cyclictest0-21swapper/620:12:176
2058499121120,1cyclictest0-21swapper/519:20:365
2058499121119,1cyclictest26460-21chk_conn_tcp23:05:385
2057799121119,1cyclictest0-21swapper/421:46:544
2057199121120,0cyclictest37-21ksoftirqd/323:02:463
2055299121121,0cyclictest350ksoftirqd/021:18:510
2057799120118,1cyclictest45-21ksoftirqd/422:38:524
2056499120115,4cyclictest29-21ksoftirqd/221:52:342
2058499119116,2cyclictest0-21swapper/521:54:315
2057199119119,0cyclictest37-21ksoftirqd/319:49:233
2058999118116,1cyclictest0-21swapper/600:05:246
2058499118117,1cyclictest0-21swapper/519:32:255
2057799118117,1cyclictest0-21swapper/422:07:334
2056499118117,1cyclictest0-21swapper/223:47:532
2056499118117,0cyclictest29-21ksoftirqd/221:48:572
2056499118117,0cyclictest29-21ksoftirqd/221:43:132
2055999118118,0cyclictest21-21ksoftirqd/122:40:161
2055999118117,0cyclictest21-21ksoftirqd/122:32:141
2059699117114,2cyclictest0-21swapper/721:57:367
2058499117115,1cyclictest0-21swapper/523:39:115
2056499117116,1cyclictest29-21ksoftirqd/222:00:552
2055299117116,0cyclictest3-21ksoftirqd/023:07:150
2058999116114,1cyclictest8395-21chk_conn_tcp19:20:066
2057799116114,1cyclictest0-21swapper/400:08:594
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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