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2026-06-05 - 16:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Fri Jun 05, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19765211896,16sleep30-21swapper/307:09:233
19765211896,16sleep30-21swapper/307:09:233
19633211497,12sleep10-21swapper/107:07:411
19633211497,12sleep10-21swapper/107:07:401
190422114103,6sleep00-21swapper/007:05:270
190422114103,6sleep00-21swapper/007:05:270
191852112100,6sleep20-21swapper/207:06:012
191852112100,6sleep20-21swapper/207:06:012
127802770,0sleep00-21swapper/010:59:570
116012770,2sleep337-21rcuc/310:25:003
3022740,0sleep30-21swapper/310:12:583
43962570,0sleep30-21swapper/312:31:593
1984599220,2cyclictest0-21swapper/309:11:513
171242220,0sleep10-21swapper/109:23:221
1984599211,3cyclictest10342-21ssh09:15:543
1984599211,2cyclictest7007-21ssh09:45:573
1984599210,3cyclictest21847-21cut10:35:153
1984599210,3cyclictest15636-21users09:21:033
1984599210,3cyclictest0-21swapper/311:35:193
1984599210,3cyclictest0-21swapper/311:08:223
1984599210,3cyclictest0-21swapper/310:50:193
1984599210,19cyclictest0-21swapper/311:28:033
197582210,1sleep337-21rcuc/311:40:163
1984599201,3cyclictest0-21swapper/307:55:093
1984599200,3cyclictest8900-21perl10:55:153
1984599200,3cyclictest822-21ssh10:46:313
1984599200,3cyclictest6416-21ssh10:19:433
1984599200,3cyclictest13763-21hddtemp_smartct11:00:153
1984599200,3cyclictest0-21swapper/311:45:153
1984599200,3cyclictest0-21swapper/311:18:273
1984599200,3cyclictest0-21swapper/310:40:153
1984599200,3cyclictest0-21swapper/307:30:113
1984599200,3cyclictest0-21swapper/307:20:153
1984599200,3cyclictest0-21swapper/307:11:033
1984599200,18cyclictest0-21swapper/309:32:023
1984599191,16cyclictest0-21swapper/312:20:373
1984599190,3cyclictest19623-21apt-get10:00:073
1984599190,3cyclictest18619-21seq10:31:113
1984599190,3cyclictest1687-21sh09:40:313
1984599190,3cyclictest10028-21ssh12:38:233
1984599190,3cyclictest0-21swapper/311:13:033
1984599190,3cyclictest0-21swapper/308:45:153
1984599190,3cyclictest0-21swapper/307:25:153
1984599190,2cyclictest9399-21ssh12:03:583
1984599190,2cyclictest27231-21ssh10:06:473
1984599190,2cyclictest0-21swapper/311:51:553
1984599190,2cyclictest0-21swapper/311:30:423
1984599190,2cyclictest0-21swapper/309:57:433
1984599190,2cyclictest0-21swapper/309:25:033
1984599190,18cyclictest0-21swapper/312:18:423
1984599190,17cyclictest0-21swapper/311:57:193
19844991916,2cyclictest6052-21kworker/u8:009:12:042
19844991916,2cyclictest1829-21kworker/u8:209:24:042
1984599180,3cyclictest23935-21turbostat08:44:553
1984599180,2cyclictest0-21swapper/312:26:153
1984599180,2cyclictest0-21swapper/312:10:153
1984599180,2cyclictest0-21swapper/312:05:113
1984599180,2cyclictest0-21swapper/311:21:473
1984599180,2cyclictest0-21swapper/309:50:353
1984599180,2cyclictest0-21swapper/309:35:033
1984599180,2cyclictest0-21swapper/308:12:193
19844991815,2cyclictest9316-21kworker/u8:110:10:052
19843991813,3cyclictest13167-21aten2.4_r3power11:00:121
19845991711,5cyclictest0-21swapper/308:05:013
1984599170,3cyclictest0-21swapper/309:00:113
1984599170,2cyclictest11758-21ssh10:25:113
1984599170,2cyclictest0-21swapper/308:36:233
1984599170,2cyclictest0-21swapper/308:31:033
19844991714,2cyclictest8541-21kworker/u8:212:13:042
19844991714,2cyclictest6052-21kworker/u8:009:26:052
19844991714,2cyclictest20996-21kworker/u8:211:17:042
1984599160,2cyclictest0-21swapper/308:56:073
1984599160,2cyclictest0-21swapper/308:26:393
1984599160,2cyclictest0-21swapper/308:15:433
1984599160,2cyclictest0-21swapper/307:50:193
1984599160,2cyclictest0-21swapper/307:45:153
1984599160,2cyclictest0-21swapper/307:41:273
1984599160,2cyclictest0-21swapper/307:15:153
19844991613,2cyclictest9316-21kworker/u8:110:04:052
19844991613,2cyclictest28258-21kworker/u8:111:51:042
19844991613,2cyclictest26633-21kworker/u8:112:33:042
1984399161,4cyclictest207150irq/24-eth111:45:161
19843991613,2cyclictest0-21swapper/111:40:101
1984399160,15cyclictest0-21swapper/110:33:001
1984399160,14cyclictest18663-21cpu09:25:131
1984399160,14cyclictest12996-21ssh10:25:341
1984399160,14cyclictest0-21swapper/112:30:121
1984399160,14cyclictest0-21swapper/107:10:501
1984599151,4cyclictest28547-21df_abs08:50:133
1984599150,2cyclictest0-21swapper/309:05:073
1984599150,2cyclictest0-21swapper/308:00:513
1984599150,13cyclictest31552-21cat07:36:083
1984499151,3cyclictest0-21swapper/207:31:012
19844991512,2cyclictest9316-21kworker/u8:109:50:042
19844991512,2cyclictest8541-21kworker/u8:212:17:042
19844991512,2cyclictest25791-21kworker/u8:110:43:042
19844991512,2cyclictest20996-21kworker/u8:211:24:042
1984499151,12cyclictest29410-21ssh09:35:372
1984499151,12cyclictest0-21swapper/212:06:492
1984499150,3cyclictest6395-21latency12:00:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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