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2026-06-09 - 10:34
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, 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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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.
Unexpectedly long latencies may be caused by SMIs
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 rack0slot5.osadl.org (updated Tue Jun 09, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
397462199514512,1cyclictest3995478-21kworker/4:1+i915-unordered19:34:2710
39746219950223,478cyclictest0-21swapper/421:48:2610
39746409950125,475cyclictest0-21swapper/900:01:2615
397462199496494,1cyclictest4042490-21kworker/4:0+i915-unordered21:13:2710
397462199489488,1cyclictest3987446-21kworker/4:0+i915-unordered19:30:2710
397461099487485,2cyclictest4023664-21kworker/1:4+i915-unordered21:36:261
397461099487485,2cyclictest4023664-21kworker/1:4+i915-unordered21:36:261
39746219948033,446cyclictest0-21swapper/400:01:2610
39746219947917,461cyclictest0-21swapper/420:38:2710
3974633994783,49cyclictest0-21swapper/719:37:5013
397461099477476,1cyclictest4043956-21kworker/1:2+i915-unordered21:01:271
39746339947224,30cyclictest0-21swapper/723:55:4913
3974621994728,461cyclictest0-21swapper/421:01:2710
397465999470470,0cyclictest0-21swapper/1321:56:265
3974648994701,467cyclictest0-21swapper/1122:05:263
397466499468468,0cyclictest0-21swapper/1421:49:266
39746339946822,30cyclictest0-21swapper/723:27:2113
3974621994685,460cyclictest0-21swapper/420:21:2710
39746339946721,29cyclictest0-21swapper/723:46:0913
39746339946720,30cyclictest0-21swapper/720:02:1113
39746259946722,29cyclictest0-21swapper/520:01:2711
39746339946620,28cyclictest0-21swapper/722:09:1313
39746339946619,30cyclictest0-21swapper/720:56:4813
39746339946518,28cyclictest0-21swapper/721:02:1013
39746679946418,445cyclictest0-21swapper/1522:43:267
39746339946318,30cyclictest0-21swapper/700:02:1013
39746299946220,29cyclictest0-21swapper/623:44:2612
39746059946215,29cyclictest0-21swapper/023:31:110
397461099461458,2cyclictest4043956-21kworker/1:2+events20:44:121
397466799460460,0cyclictest39186-21kworker/15:2+i915-unordered00:30:267
397466799460460,0cyclictest39186-21kworker/15:2+i915-unordered00:30:267
39746149946019,30cyclictest0-21swapper/222:58:268
397461099458457,1cyclictest4023664-21kworker/1:4+events22:02:481
397461099458456,1cyclictest4023664-21kworker/1:4+events21:25:481
397461099458455,2cyclictest18808-21kworker/1:5+events00:21:481
397461099458455,2cyclictest18808-21kworker/1:5+events00:21:481
39746299945715,28cyclictest0-21swapper/623:54:2612
39746299945710,30cyclictest0-21swapper/620:38:1012
397461499456455,1cyclictest0-21swapper/219:38:278
39746059945613,29cyclictest0-21swapper/022:23:110
397465699455455,0cyclictest69750irq/159-i91521:56:264
39746489945510,30cyclictest0-21swapper/1119:53:273
3974633994557,29cyclictest0-21swapper/723:51:5013
397461099455452,2cyclictest3974267-21kworker/1:2+events19:22:481
397466799451450,1cyclictest0-21swapper/1520:21:277
3974643994500,450cyclictest0-21swapper/1020:37:202
3974621994500,447cyclictest0-21swapper/423:30:4910
397465699449449,0cyclictest69750irq/159-i91500:30:264
397465699449449,0cyclictest69750irq/159-i91500:30:264
3974633994490,28cyclictest0-21swapper/722:30:1013
39746219944926,422cyclictest0-21swapper/422:14:4910
397461799448445,3cyclictest5567-21kworker/u64:8+events_unbound23:54:269
3974617994480,447cyclictest0-21swapper/321:52:219
397461099448445,2cyclictest4084182-21kworker/1:0+events22:18:481
397466799447443,3cyclictest4155113-21kworker/u64:14+events_unbound23:46:267
39746339944721,30cyclictest0-21swapper/722:42:5013
39746439944625,420cyclictest0-21swapper/1023:29:092
39746439944625,420cyclictest0-21swapper/1020:15:112
39746219944625,420cyclictest0-21swapper/420:50:5010
397461099446446,0cyclictest0-21swapper/121:52:211
397460599446445,1cyclictest1818-21snmpd00:06:000
397466499445442,2cyclictest4110896-21kworker/u64:10+events_unbound22:02:486
39746439944524,420cyclictest0-21swapper/1022:44:122
39746439944524,420cyclictest0-21swapper/1021:48:472
39746219944519,0cyclictest0-21swapper/422:32:4810
397466499444441,2cyclictest4027623-21kworker/u64:0+events_unbound21:25:486
39746439944424,419cyclictest0-21swapper/1023:37:112
39746439944423,420cyclictest0-21swapper/1021:54:092
39746439944421,422cyclictest0-21swapper/1021:29:102
39746439944421,422cyclictest0-21swapper/1021:29:102
397466499443440,2cyclictest5567-21kworker/u64:8+events_unbound00:21:486
397466499443440,2cyclictest5567-21kworker/u64:8+events_unbound00:21:486
39746339944323,417cyclictest0-21swapper/720:23:4913
397461099443440,2cyclictest4023664-21kworker/1:4+events23:17:481
3974656994423,28cyclictest0-21swapper/1219:30:274
397464899442438,3cyclictest1818-21snmpd23:01:373
39746339944223,416cyclictest0-21swapper/722:59:1013
39746179944225,416cyclictest0-21swapper/323:34:269
39746409944121,419cyclictest0-21swapper/922:56:4715
39746059944124,417cyclictest0-21swapper/023:26:100
397466499440440,0cyclictest0-21swapper/1422:38:016
39746409944023,417cyclictest0-21swapper/921:05:4815
39746409944020,418cyclictest0-21swapper/921:33:4815
39746409944020,418cyclictest0-21swapper/921:33:4815
39746299944015,29cyclictest0-21swapper/621:16:4812
39746219944018,421cyclictest0-21swapper/422:24:1010
3974621994400,438cyclictest0-21swapper/421:24:2710
39746149944021,416cyclictest4111582-21timerandwakeup21:52:488
39746059944024,29cyclictest0-21swapper/020:09:110
397466799439438,1cyclictest19053-21kworker/15:2+pm00:06:007
39746599943924,414cyclictest0-21swapper/1321:43:265
39746409943923,415cyclictest0-21swapper/921:31:2615
39746409943923,415cyclictest0-21swapper/921:31:2615
39746409943919,419cyclictest0-21swapper/900:04:4815
39746339943920,416cyclictest0-21swapper/700:27:2213
39746339943920,416cyclictest0-21swapper/700:27:2213
39746299943913,30cyclictest0-21swapper/621:46:4912
39746409943818,418cyclictest0-21swapper/921:24:5015
39746339943820,416cyclictest0-21swapper/700:10:0813
39746339943819,417cyclictest0-21swapper/722:38:1113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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