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2026-07-16 - 11:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #4

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 rack0slot4s.osadl.org (updated Thu Jul 16, 2026 00:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
418998650,64rtkit-daemon0-21swapper/219:08:568
82021425452,1sleep50-21swapper/519:06:0211
418998470,46rtkit-daemon0-21swapper/1019:05:492
82048124644,1sleep110-21swapper/1119:09:363
82041324543,1sleep70-21swapper/719:08:4413
821043994342,1cyclictest0-21swapper/823:23:5214
82030623937,1sleep00-21swapper/019:07:170
82016723937,1sleep90-21swapper/919:05:3315
82016023836,1sleep30-21swapper/319:05:289
81703923836,1sleep140-21swapper/1419:05:056
82045723735,1sleep60-21swapper/619:09:1512
82021323735,1sleep40-21swapper/419:06:0110
82030423634,1sleep150-21swapper/1519:07:157
82016623634,1sleep80-21swapper/819:05:3314
821025993532,2cyclictest863492-21kworker/u32:0+events_unbound21:20:168
82050823533,1sleep120-21swapper/1219:09:524
82030223533,1sleep130-21swapper/1319:07:135
821057993429,5cyclictest1774-21snmpd00:04:105
821057993425,9cyclictest0-21swapper/1300:38:395
82043223432,1sleep10-21swapper/119:08:541
821052993333,0cyclictest798346-1kworker/u33:1+i915_flip19:32:363
821027993326,1cyclictest1163301-21ethtool00:15:149
821061993229,3cyclictest1774-21snmpd22:56:546
821048993230,1cyclictest795346-21kworker/10:0+events20:33:212
821048993230,1cyclictest1051234-21kworker/10:1+events23:40:032
821043993231,1cyclictest0-21swapper/800:21:1114
821041993228,3cyclictest1774-21snmpd21:50:0713
821025993227,3cyclictest922523-21diskmemload21:46:028
82105799310,31cyclictest0-21swapper/1322:31:405
82105799310,15cyclictest0-21swapper/1321:14:475
82105799310,15cyclictest0-21swapper/1321:14:475
82105299310,30cyclictest0-21swapper/1119:35:163
821048993130,1cyclictest991805-21kworker/10:2+events22:15:172
821048993130,1cyclictest920990-21kworker/10:2+events21:32:582
821048993130,1cyclictest920990-21kworker/10:2+events21:20:202
821048993130,1cyclictest920990-21kworker/10:2+events21:19:272
821048993130,1cyclictest1774-21snmpd19:56:572
821048993130,1cyclictest1051234-21kworker/10:1+events23:06:432
821048993129,1cyclictest1134668-21kworker/10:0+events00:25:092
821046993129,2cyclictest1146713-21kworker/u32:4+events_unbound00:15:1815
821043993131,0cyclictest0-21swapper/823:11:1114
821043993131,0cyclictest0-21swapper/800:06:3114
821043993131,0cyclictest0-21swapper/800:06:3114
82104399310,31cyclictest618598-21thunderbird00:03:1914
82104199310,30cyclictest0-21swapper/723:06:4813
82104199310,30cyclictest0-21swapper/719:35:2613
82104199310,30cyclictest0-21swapper/700:09:1413
82104199310,30cyclictest0-21swapper/700:09:1313
821036993128,3cyclictest0-21swapper/623:06:2412
82103699310,30cyclictest0-21swapper/619:57:2312
82103699310,0cyclictest0-21swapper/623:02:1812
821031993130,1cyclictest1774-21snmpd23:45:4910
82103199310,30cyclictest0-21swapper/419:50:5110
821025993127,3cyclictest3578-21gnome-shell22:35:158
82102599310,30cyclictest0-21swapper/223:25:188
82102299310,1cyclictest0-21swapper/100:14:081
82102299310,1cyclictest0-21swapper/100:14:081
82102099310,30cyclictest0-21swapper/021:50:160
821061993029,1cyclictest1774-21snmpd19:57:426
82106199300,30cyclictest0-21swapper/1423:03:596
82106199300,30cyclictest0-21swapper/1421:12:176
82106199300,30cyclictest0-21swapper/1421:12:176
82106199300,30cyclictest0-21swapper/1400:32:116
82106199300,29cyclictest0-21swapper/1422:51:006
82106199300,1cyclictest0-21swapper/1419:22:506
82105799300,30cyclictest0-21swapper/1323:09:485
82105799300,30cyclictest0-21swapper/1319:20:385
82105799300,27cyclictest0-21swapper/1320:30:125
821054993030,0cyclictest798346-1kworker/u33:1+i915_flip23:38:464
821054993029,1cyclictest983458-21mii-tool21:55:154
821054993029,1cyclictest1774-21snmpd21:40:484
821054993029,1cyclictest1774-21snmpd00:38:204
82105499300,30cyclictest0-21swapper/1223:08:574
82105499300,30cyclictest0-21swapper/1222:47:234
82105499300,30cyclictest0-21swapper/1221:15:484
82105499300,30cyclictest0-21swapper/1200:30:134
82105499300,1cyclictest0-21swapper/1221:05:214
82105499300,1cyclictest0-21swapper/1221:05:214
821052993029,1cyclictest1774-21snmpd19:47:213
82105299300,30cyclictest0-21swapper/1123:25:153
82105299300,30cyclictest0-21swapper/1121:34:323
821048993029,1cyclictest991805-21kworker/10:2+events22:25:332
821048993029,1cyclictest991805-21kworker/10:2+events22:08:392
821048993029,1cyclictest920990-21kworker/10:2+events21:39:232
821048993029,1cyclictest920990-21kworker/10:2+events21:07:412
821048993029,1cyclictest920990-21kworker/10:2+events21:07:402
821048993029,1cyclictest795346-21kworker/10:0+events20:44:412
821048993029,1cyclictest795346-21kworker/10:0+events20:17:452
821048993029,1cyclictest795346-21kworker/10:0+events20:09:082
821048993029,1cyclictest795346-21kworker/10:0+events20:01:032
821048993029,1cyclictest795346-21kworker/10:0+events19:47:322
821048993029,1cyclictest795346-21kworker/10:0+events19:26:262
821048993029,1cyclictest795346-21kworker/10:0+events19:11:332
821048993029,1cyclictest1134668-21kworker/10:0+events00:22:032
821048993029,1cyclictest1051234-21kworker/10:1+events23:58:072
821048993029,1cyclictest1051234-21kworker/10:1+events23:54:012
821048993029,1cyclictest1051234-21kworker/10:1+events23:32:412
821048993029,1cyclictest1051234-21kworker/10:1+events22:55:552
821048993029,1cyclictest0-21swapper/1000:11:142
821048993029,1cyclictest0-21swapper/1000:11:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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