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2025-07-12 - 11:02

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 Sat Jul 12, 2025 00:45:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26632991330,132cyclictest0-21swapper/621:22:316
2663299131128,2cyclictest0-21swapper/623:52:276
2663999130128,1cyclictest0-21swapper/720:48:537
2663999129127,1cyclictest0-21swapper/700:31:037
26632991290,128cyclictest0-21swapper/600:04:126
2661099129127,1cyclictest29-21ksoftirqd/223:18:052
26632991280,127cyclictest0-21swapper/621:57:266
2660299128127,0cyclictest21-21ksoftirqd/121:56:371
2662099127126,1cyclictest0-21swapper/419:44:374
2662099127125,2cyclictest0-21swapper/421:22:264
2660299127121,5cyclictest21-21ksoftirqd/121:03:371
26639991260,125cyclictest0-21swapper/720:20:477
26639991260,125cyclictest0-21swapper/720:20:477
2663299124123,1cyclictest0-21swapper/620:38:036
2662099124121,2cyclictest0-21swapper/422:03:554
2661099124118,5cyclictest29-21ksoftirqd/220:17:532
2660299124124,0cyclictest21-21ksoftirqd/121:46:041
2659399124123,0cyclictest3-21ksoftirqd/022:00:580
2661099123122,1cyclictest29-21ksoftirqd/220:27:122
2659399123123,0cyclictest3-21ksoftirqd/022:24:530
2659399123122,0cyclictest3-21ksoftirqd/020:19:130
2663299122120,1cyclictest9401-21chk_conn_tcp23:22:266
2662099122121,1cyclictest0-21swapper/420:23:384
2662099122121,1cyclictest0-21swapper/420:23:384
2659399122122,0cyclictest3-21ksoftirqd/019:53:460
2659399122120,1cyclictest3-21ksoftirqd/022:54:200
2660299121120,0cyclictest21-21ksoftirqd/122:14:201
2659399121121,0cyclictest3-21ksoftirqd/022:28:120
2659399121121,0cyclictest3-21ksoftirqd/000:10:080
2662099120119,1cyclictest0-21swapper/422:56:014
2660299120116,4cyclictest21-21ksoftirqd/100:38:311
2659399120118,1cyclictest3-21ksoftirqd/021:15:160
2663999119116,2cyclictest0-21swapper/722:41:577
2662799119116,2cyclictest0-21swapper/519:57:145
2662099119118,1cyclictest0-21swapper/423:22:464
2662099119117,1cyclictest0-21swapper/420:29:104
2660299119119,0cyclictest21-21ksoftirqd/123:40:521
2659399119119,0cyclictest3-21ksoftirqd/021:05:230
2659399119118,0cyclictest3-21ksoftirqd/021:49:010
26620991180,2cyclictest0-21swapper/419:47:054
2661499118116,1cyclictest37-21ksoftirqd/300:09:003
2663299117115,1cyclictest0-21swapper/621:29:586
2661499117117,0cyclictest37-21ksoftirqd/319:55:083
2661099116115,0cyclictest29-21ksoftirqd/222:59:212
2661099116114,1cyclictest29-21ksoftirqd/223:33:302
2659399116116,0cyclictest3-21ksoftirqd/019:59:490
2663999115113,1cyclictest28913-21chk_conn_tcp00:08:537
2662799115114,1cyclictest0-21swapper/523:21:015
2662099115114,1cyclictest0-21swapper/400:32:374
2661099115113,2cyclictest29-21ksoftirqd/222:38:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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