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2026-06-28 - 15:53
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 Sun Jun 28, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
51813899772323,29cyclictest0-21swapper/1523:39:137
51809999736316,419cyclictest0-21swapper/600:22:3412
5180929955430,523cyclictest0-21swapper/423:32:5010
5180999950919,490cyclictest0-21swapper/622:50:5112
5181349949621,474cyclictest0-21swapper/1423:49:506
51813899484483,1cyclictest535912-21kworker/15:0+i915-unordered19:32:517
51810399483453,30cyclictest0-21swapper/722:13:5113
51812699481478,2cyclictest707299-21kworker/12:2+i915-unordered23:32:504
51810399478478,0cyclictest0-21swapper/722:07:5113
51810399478478,0cyclictest0-21swapper/722:07:5113
51813899475474,1cyclictest557009-21kworker/15:1+i915-unordered19:53:517
51810399475474,1cyclictest0-21swapper/719:32:5113
5180799947325,30cyclictest0-21swapper/121:44:131
5181219947125,30cyclictest0-21swapper/1120:41:133
5181219947122,29cyclictest0-21swapper/1120:54:143
5181069947124,29cyclictest0-21swapper/821:27:1314
5181069947121,30cyclictest0-21swapper/800:17:1214
51813499470467,2cyclictest754716-21kworker/14:0+i915-unordered23:53:506
5181219946822,29cyclictest0-21swapper/1120:12:353
5180799946617,30cyclictest0-21swapper/100:07:141
5181219946515,30cyclictest0-21swapper/1123:11:133
51810399465464,1cyclictest0-21swapper/719:53:5113
51812999464461,3cyclictest612384-21kworker/u64:7+events_unbound20:53:515
5181219946425,30cyclictest0-21swapper/1119:45:353
5180799946416,29cyclictest0-21swapper/120:21:341
51813899463462,1cyclictest672611-21kworker/15:2+i915-unordered22:13:517
5181219946315,29cyclictest0-21swapper/1121:58:123
5180799946316,29cyclictest0-21swapper/100:36:131
518119994600,460cyclictest0-21swapper/1019:53:512
5181119946018,28cyclictest0-21swapper/921:17:5115
5181069946021,30cyclictest0-21swapper/800:31:3314
51808799460452,8cyclictest0-21swapper/323:49:509
5181069945818,29cyclictest0-21swapper/823:51:3514
51813899456456,0cyclictest664326-21kworker/15:0+i915-unordered22:07:517
51813899456456,0cyclictest664326-21kworker/15:0+i915-unordered22:07:517
5181269945614,30cyclictest0-21swapper/1219:54:514
51811999456454,2cyclictest0-21swapper/1022:20:512
51813899455454,1cyclictest677429-21kworker/15:1+i915-unordered22:20:517
51813499455454,1cyclictest763555-21kworker/14:2+i915-unordered00:00:506
51812999455454,1cyclictest0-21swapper/1321:33:515
5181119945513,29cyclictest0-21swapper/920:32:5115
51807799454451,2cyclictest651476-21kworker/0:1+events21:52:140
5181349945311,30cyclictest0-21swapper/1422:26:466
518092994532,30cyclictest0-21swapper/422:44:1310
518129994522,29cyclictest0-21swapper/1323:33:355
51809999452451,1cyclictest69750irq/159-i91523:49:5012
5181219945126,30cyclictest0-21swapper/1119:20:343
5181219945126,30cyclictest0-21swapper/1119:20:343
518092994513,29cyclictest0-21swapper/419:52:3610
51808499451450,1cyclictest69750irq/159-i91519:53:518
51809699449446,2cyclictest636949-21kworker/u64:5+events_unbound22:18:3411
5180799944925,30cyclictest0-21swapper/122:27:141
51808499447446,1cyclictest69750irq/159-i91522:20:518
51810399446445,1cyclictest0-21swapper/722:20:5113
51807999446445,1cyclictest1818-21snmpd23:05:461
5181349944525,419cyclictest0-21swapper/1420:36:476
51811999445443,2cyclictest535951-21kworker/10:1+i915-unordered19:27:512
5180799944526,418cyclictest0-21swapper/122:55:131
5180799944525,419cyclictest0-21swapper/120:11:361
5180929944422,421cyclictest0-21swapper/419:19:1210
5180929944422,421cyclictest0-21swapper/419:19:1210
51808799444442,1cyclictest680000-21kworker/3:1+i915-unordered22:15:519
5180799944426,417cyclictest0-21swapper/120:35:131
5180799944425,418cyclictest0-21swapper/123:34:121
5180799944425,418cyclictest0-21swapper/121:09:131
51812199443440,3cyclictest577081-21kworker/u64:4+events_unbound20:23:513
5180799944324,416cyclictest0-21swapper/121:17:361
5180799944323,417cyclictest0-21swapper/100:26:341
5180779944323,419cyclictest762443-21ntp_states23:47:110
518138994420,30cyclictest0-21swapper/1521:15:517
51812699442439,3cyclictest616651-21kworker/u64:9+events_unbound21:00:514
5180799944225,417cyclictest0-21swapper/122:50:361
5181269944124,416cyclictest0-21swapper/1220:19:514
5180929944120,420cyclictest0-21swapper/422:56:1210
5180799944124,416cyclictest0-21swapper/123:43:121
5180799944123,416cyclictest0-21swapper/120:47:131
5180929944020,419cyclictest0-21swapper/400:06:3410
5180929944019,420cyclictest0-21swapper/423:52:3610
5180799944023,415cyclictest0-21swapper/122:33:121
5180929943917,421cyclictest0-21swapper/419:15:1410
5180929943917,421cyclictest0-21swapper/419:15:1410
5180969943823,414cyclictest0-21swapper/523:28:5011
5180799943819,418cyclictest0-21swapper/120:00:341
5181349943717,419cyclictest0-21swapper/1422:47:336
5180999943718,418cyclictest0-21swapper/620:56:4612
5180799943722,0cyclictest0-21swapper/122:09:351
5180799943722,0cyclictest0-21swapper/122:09:351
51807799437434,2cyclictest496372-21kworker/0:4+events22:18:340
51808499436435,1cyclictest69750irq/159-i91519:27:518
5180799943617,417cyclictest0-21swapper/120:54:351
5180799943617,416cyclictest0-21swapper/119:50:131
5180799943616,418cyclictest0-21swapper/122:40:121
5180799943616,417cyclictest0-21swapper/120:25:341
5180969943518,416cyclictest0-21swapper/521:59:1211
5180929943412,419cyclictest0-21swapper/422:32:1410
5180929943412,419cyclictest0-21swapper/422:11:3510
5180929943412,419cyclictest0-21swapper/422:11:3510
5180929943411,419cyclictest0-21swapper/400:24:3610
5180879943418,415cyclictest0-21swapper/321:00:519
518084994340,26cyclictest0-21swapper/220:49:518
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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