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2025-11-30 - 19:19

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Sun Nov 30, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42862237163,24sleep10-21swapper/107:08:081
42702235163,24sleep00-21swapper/007:07:550
42572234160,24sleep20-21swapper/207:07:462
42312229163,53sleep30-21swapper/307:07:263
1277921860,4sleep0451999cyclictest11:05:280
4530991071,104cyclictest0-21swapper/208:07:522
4530999188,2cyclictest0-21swapper/209:43:592
167232490,1sleep20-21swapper/207:35:142
47002480,1sleep10-21swapper/109:35:121
214562400,4sleep10-21swapper/110:10:291
4519993811,12cyclictest4882-21perf10:50:010
290252360,4sleep1452699cyclictest09:15:211
50302350,4sleep0451999cyclictest12:00:270
451999339,11cyclictest20581-21awk07:45:010
453699321,12cyclictest0-21swapper/307:26:373
453699311,12cyclictest0-21swapper/310:54:533
453699311,12cyclictest0-21swapper/307:33:113
453699301,13cyclictest0-21swapper/311:39:493
453699301,12cyclictest0-21swapper/310:55:573
453699300,13cyclictest0-21swapper/309:54:533
453699300,13cyclictest0-21swapper/309:54:533
453699291,14cyclictest0-21swapper/308:31:413
453699291,13cyclictest0-21swapper/308:47:253
3412290,4sleep339-21rcuc/309:25:153
453699281,13cyclictest0-21swapper/308:59:413
453699271,12cyclictest0-21swapper/312:36:353
453699271,12cyclictest0-21swapper/312:16:453
453699271,12cyclictest0-21swapper/311:22:133
453699271,12cyclictest0-21swapper/310:26:293
453699271,12cyclictest0-21swapper/309:39:413
453699271,11cyclictest0-21swapper/309:16:533
451999270,12cyclictest17430-21crond10:05:010
453699261,13cyclictest0-21swapper/309:45:333
453699261,12cyclictest25604-21diskmemload09:30:293
453699261,12cyclictest0-21swapper/310:01:093
452699261,21cyclictest23411-21munin-run09:05:011
4526992612,12cyclictest27013-21kworker/u8:108:44:111
451999260,12cyclictest11-21rcuc/009:35:000
221132260,1sleep20-21swapper/210:15:122
453699251,17cyclictest0-21swapper/312:10:593
453699251,14cyclictest0-21swapper/311:00:533
453699251,14cyclictest0-21swapper/311:00:533
453699251,13cyclictest0-21swapper/311:12:453
453699251,13cyclictest0-21swapper/310:39:413
453699251,13cyclictest0-21swapper/310:14:533
453699251,12cyclictest0-21swapper/309:57:493
453699251,11cyclictest0-21swapper/312:21:253
453699251,11cyclictest0-21swapper/311:50:533
453699251,11cyclictest0-21swapper/310:20:453
453699251,10cyclictest0-21swapper/307:35:093
452699252,4cyclictest29067-21munin-run11:45:011
452699251,3cyclictest15387-21ls12:25:201
4526992510,6cyclictest674-21systemd-journal11:50:531
453699241,12cyclictest0-21swapper/307:43:413
453699241,11cyclictest0-21swapper/309:22:293
453699241,11cyclictest0-21swapper/308:16:533
453699240,12cyclictest0-21swapper/310:30:213
453699240,10cyclictest0-21swapper/311:16:373
452699244,18cyclictest0-21swapper/111:46:221
452699243,13cyclictest0-21swapper/107:33:471
452699241,17cyclictest0-21swapper/110:53:351
451999247,14cyclictest31588-21perf08:10:010
4519992410,11cyclictest27821-21awk09:15:010
453699231,13cyclictest0-21swapper/307:24:063
453699231,12cyclictest0-21swapper/308:11:093
453699231,11cyclictest0-21swapper/310:49:333
453099233,12cyclictest24221-21kworker/2:212:28:192
453099231,4cyclictest0-21swapper/210:11:272
452699231,4cyclictest24077-21open_files07:50:271
452699231,2cyclictest15239-21perf10:00:011
452699231,16cyclictest0-21swapper/112:30:031
452699231,10cyclictest0-21swapper/111:05:101
451999231,3cyclictest86550irq/126-enp1s0-09:41:380
4519992310,10cyclictest7-21ksoftirqd/010:30:450
140412230,12sleep230-21rcuc/207:30:012
453699222,5cyclictest0-21swapper/310:19:533
453699221,13cyclictest0-21swapper/311:27:573
453699221,13cyclictest0-21swapper/309:00:453
453699221,12cyclictest0-21swapper/312:28:133
453699221,12cyclictest0-21swapper/312:07:093
453699221,12cyclictest0-21swapper/312:07:093
453699221,12cyclictest0-21swapper/309:06:373
453699221,12cyclictest0-21swapper/308:41:573
4530992217,3cyclictest20067-21grep07:40:282
4530992212,3cyclictest0-21swapper/210:02:322
452699227,3cyclictest0-21swapper/109:49:151
452699224,8cyclictest88050irq/133-enp2s0-11:30:211
452699222,15cyclictest0-21swapper/111:12:311
452699222,15cyclictest0-21swapper/110:06:041
452699221,9cyclictest0-21swapper/108:14:081
452699221,4cyclictest0-21swapper/107:58:141
452699221,19cyclictest0-21swapper/108:35:201
452699221,18cyclictest7621-21cstates10:55:131
452699221,16cyclictest0-21swapper/111:58:301
452699221,16cyclictest0-21swapper/110:28:181
452699221,15cyclictest0-21swapper/110:33:171
452699221,10cyclictest780-21rngd10:15:351
452699221,10cyclictest7368-21sort09:40:151
452699221,10cyclictest0-21swapper/110:02:111
452699221,10cyclictest0-21swapper/108:47:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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