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2026-04-15 - 06:44

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 Wed Apr 15, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141432239163,24sleep30-21swapper/319:08:503
140502205166,26sleep20-21swapper/219:07:362
141152203166,26sleep00-21swapper/019:08:260
122712200166,23sleep10-21swapper/119:05:051
2981921470,3sleep11432799cyclictest20:55:181
14332998683,2cyclictest0-21swapper/221:40:482
142432650,1sleep20-21swapper/221:35:122
14327994518,18cyclictest22838-21/usr/sbin/munin19:25:201
1432799419,13cyclictest13392-21latency_hist20:20:021
14327993815,12cyclictest25636-21awk23:15:011
14327993814,20cyclictest4548-21taskset23:40:121
14327993813,13cyclictest14630-21sh22:50:011
5642370,1sleep00-21swapper/019:50:110
1432799377,15cyclictest0-21swapper/123:18:131
1432799376,23cyclictest0-21swapper/122:25:161
1432099378,13cyclictest23445-21idleruntime-cro23:10:010
1432799369,12cyclictest31729-21cat22:15:011
1432799367,21cyclictest0-21swapper/123:30:011
14327993616,12cyclictest14922-21hddtemp_smartct21:35:161
14327993616,11cyclictest21814-21diskstats23:05:141
14327993613,19cyclictest8601-21grep20:05:251
14327993613,12cyclictest10251-21awk22:40:011
14327993518,13cyclictest7331-21/usr/sbin/munin22:30:241
14327993516,11cyclictest25675-21/usr/sbin/munin20:45:221
14327993513,13cyclictest22819-21awk21:55:011
14327993510,22cyclictest5667-21kernelversion20:00:181
1432799347,17cyclictest0-21swapper/100:00:171
14327993414,6cyclictest8980-21grep23:50:101
14327993413,18cyclictest13051-21munin-run00:00:021
1433999331,25cyclictest0-21swapper/319:50:043
1432799338,12cyclictest0-21swapper/122:20:281
14327993315,4cyclictest11276-21/usr/sbin/munin22:40:181
14327993314,16cyclictest19667-21turbostat.cron00:15:011
14327993313,17cyclictest28405-21diskstats23:20:151
14327993313,17cyclictest28405-21diskstats23:20:151
14327993310,20cyclictest17759-21df_inode19:15:151
14327993310,13cyclictest20157-21cat20:35:011
1433999321,23cyclictest0-21swapper/319:55:403
1433999321,20cyclictest0-21swapper/319:14:063
1432799329,14cyclictest27850-21chrt20:50:201
1432799329,14cyclictest23271-21ps00:20:231
1432799329,13cyclictest0-21swapper/119:36:291
1432799329,12cyclictest20223-21/usr/sbin/munin20:35:261
1432799328,12cyclictest28469-21perf00:35:011
1432799328,12cyclictest18408-21latency_hist21:45:011
1432799327,13cyclictest29870-21processes00:35:211
1432799326,11cyclictest0-21swapper/121:45:281
1432799323,20cyclictest0-21swapper/122:56:491
14327993216,4cyclictest6516-21ntp_states21:15:231
14327993212,17cyclictest14482-21latency20:20:181
14327993212,11cyclictest3784-21fschecks_time21:10:161
14327993211,7cyclictest19258-21/usr/sbin/munin23:00:121
14327993210,19cyclictest9624-21munin-run21:25:011
14339993115,3cyclictest0-21swapper/319:37:043
1433999311,24cyclictest0-21swapper/320:11:463
1433999311,21cyclictest0-21swapper/323:57:363
1432799316,15cyclictest27655-21cstates22:05:121
14327993113,5cyclictest15828-21/usr/sbin/munin20:25:151
14327993113,15cyclictest2946-21cat19:55:121
14327993112,5cyclictest25142-21pmu-power19:30:221
14327993112,11cyclictest1615-1kworker/u9:121:28:301
14327993111,11cyclictest16477-21needreboot00:05:201
14327993110,9cyclictest579-21systemd-journal19:55:011
14327993110,6cyclictest87350irq/126-enp1s0-22:05:011
1433999309,8cyclictest0-21swapper/321:21:123
1433999308,9cyclictest0-21swapper/319:29:203
1433999301,18cyclictest0-21swapper/300:05:123
1433999301,13cyclictest0-21swapper/321:17:243
1433999301,13cyclictest0-21swapper/320:45:043
1433999301,13cyclictest0-21swapper/319:19:323
1433999301,10cyclictest0-21swapper/321:49:283
14339993010,8cyclictest0-21swapper/323:06:243
1433999300,22cyclictest0-21swapper/321:28:003
1432799306,22cyclictest0-21swapper/123:30:151
14327993020,6cyclictest1205-40dnf22:17:261
14327993015,12cyclictest3353-21ntp_states23:35:201
14327993013,14cyclictest30595-21/usr/sbin/munin19:45:231
14327993011,11cyclictest327-21users21:00:271
14327993010,5cyclictest738-21dump-pmu-power21:09:561
1432099307,11cyclictest16848-21awk22:55:020
1432099306,11cyclictest7-21ksoftirqd/000:25:010
1433999291,20cyclictest0-21swapper/322:39:083
1433999291,19cyclictest0-21swapper/322:45:443
1433999291,14cyclictest0-21swapper/320:30:083
14339992910,7cyclictest0-21swapper/322:33:243
1433299291,3cyclictest0-21swapper/222:55:222
1432799299,11cyclictest14880-21bc22:50:121
1432799298,9cyclictest12048-21/usr/sbin/munin21:30:141
1432799298,19cyclictest0-21swapper/100:30:011
1432799298,19cyclictest0-21swapper/100:30:011
14327992912,9cyclictest28737-21df19:40:141
14327992912,14cyclictest20730-21pmu-power19:20:221
1433999289,3cyclictest0-21swapper/323:10:403
1433999287,8cyclictest0-21swapper/323:45:523
1433999287,3cyclictest0-21swapper/323:01:563
1433999281,17cyclictest0-21swapper/320:36:023
1433999280,21cyclictest0-21swapper/300:22:203
1432799289,7cyclictest14524-21/usr/sbin/munin19:10:201
1432799285,9cyclictest0-21swapper/121:55:171
14327992811,10cyclictest3028-21diskmemload00:16:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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