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2026-09-05 - 06:47

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 Sat Sep 05, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
202012234162,59sleep00-21swapper/019:06:170
202992233162,58sleep20-21swapper/219:07:322
202022226153,23sleep10-21swapper/119:06:181
185292224194,20sleep30-21swapper/319:05:083
549121820,4sleep02056899cyclictest22:14:550
524521360,4sleep12057299cyclictest22:11:471
56722550,4sleep339-21rcuc/321:00:143
200402530,2sleep20-21swapper/220:20:122
200402530,2sleep20-21swapper/220:20:122
23842520,4sleep230-21rcuc/223:20:152
103652520,1sleep10-21swapper/122:25:121
2058899404,6cyclictest0-21swapper/300:06:183
2058899384,6cyclictest25649-40dnf00:11:383
2058899381,11cyclictest27719-21/usr/sbin/munin23:05:253
2058899365,7cyclictest10573-40dnf21:10:243
2058899364,3cyclictest7581-21find23:30:213
2058899361,5cyclictest0-21swapper/320:15:203
2058899361,11cyclictest3533-21/usr/sbin/munin22:10:183
2058899353,9cyclictest827-21runrttasks22:38:023
2058899353,9cyclictest827-21runrttasks22:38:023
20588993520,4cyclictest0-21swapper/321:55:133
20588993511,3cyclictest28672-21/usr/sbin/munin20:40:223
2057299351,25cyclictest0-21swapper/122:16:291
2058899341,7cyclictest0-21swapper/319:45:313
20588993410,3cyclictest22084-21/usr/sbin/munin20:25:253
20581993431,2cyclictest0-21swapper/220:03:172
2057299341,3cyclictest0-21swapper/121:55:131
2057299341,15cyclictest11998-21mailstats23:40:231
2058899331,5cyclictest1974-21smart_sda20:50:243
2058899331,3cyclictest25022-21seq22:56:453
20588993310,3cyclictest827-21runrttasks23:39:543
2058199331,23cyclictest0-21swapper/221:00:442
2058199330,19cyclictest0-21swapper/220:05:172
2058899329,4cyclictest11045-21/usr/sbin/munin22:25:193
2058899328,6cyclictest21672-21proc_pri21:35:223
2058899327,4cyclictest0-21swapper/323:00:143
2058899322,10cyclictest26686-21cut19:20:183
20588993219,3cyclictest0-21swapper/319:25:573
20588993214,3cyclictest0-21swapper/320:23:053
20588993214,3cyclictest0-21swapper/320:23:053
20588993212,4cyclictest13784-21/usr/sbin/munin23:45:173
20588993211,3cyclictest827-21runrttasks21:17:453
20588993210,3cyclictest827-21runrttasks00:33:323
20588993210,3cyclictest26476-21/usr/sbin/munin20:35:203
2058899320,9cyclictest0-21swapper/322:20:243
2058899320,9cyclictest0-21swapper/320:05:253
2058899320,6cyclictest0-21swapper/323:27:593
2058899320,11cyclictest2900-21missed_timers23:20:193
2058199321,24cyclictest0-21swapper/220:27:512
20588993116,3cyclictest0-21swapper/300:37:573
2058899311,3cyclictest87350irq/126-enp1s0-20:00:013
20588993111,3cyclictest23831-21cut19:15:143
20588993111,3cyclictest18300-21/usr/sbin/munin21:30:133
20588993110,3cyclictest29062-21latency_hist21:55:013
20588993110,2cyclictest24894-21/usr/sbin/munin21:45:153
2058199311,12cyclictest0-21swapper/220:39:512
2057299311,2cyclictest0-21swapper/100:39:091
2057299311,13cyclictest0-21swapper/120:37:501
2056899317,11cyclictest28131-21munin-run00:20:010
2058899309,3cyclictest443-21if_err_enp2s023:15:163
2058899303,11cyclictest12233-21tr20:00:213
2058899301,6cyclictest0-21swapper/319:40:243
2058899301,5cyclictest8564-1kworker/u9:123:58:573
2058899301,5cyclictest0-21swapper/321:23:413
2058899301,4cyclictest31492-21/usr/sbin/munin22:00:193
20588993014,3cyclictest0-21swapper/319:33:293
2058899301,13cyclictest24967-21kworker/u8:123:10:253
2058899301,12cyclictest19534-21/usr/sbin/munin00:00:163
2058199301,12cyclictest0-21swapper/222:29:552
2058199300,23cyclictest0-21swapper/222:50:472
2058199300,19cyclictest0-21swapper/222:44:072
2057299302,15cyclictest10573-40dnf21:10:221
2057299301,7cyclictest0-21swapper/120:00:411
2057299301,3cyclictest0-21swapper/119:15:451
2057299301,18cyclictest0-21swapper/119:36:091
2057299301,12cyclictest0-21swapper/122:01:491
2057299300,20cyclictest0-21swapper/120:40:221
2058899299,3cyclictest22810-21tr21:40:113
2058899297,4cyclictest0-21swapper/322:42:253
2058899294,4cyclictest30733-21cstates00:25:133
2058899294,3cyclictest19966-21awk22:45:203
2058899294,3cyclictest0-21swapper/322:54:103
20588992911,3cyclictest2908-21/usr/sbin/munin20:55:143
2058899291,11cyclictest9278-21diskmemload00:16:213
20588992910,3cyclictest7898-21date22:20:013
20588992910,3cyclictest31105-21expr20:45:133
20588992910,2cyclictest827-21runrttasks21:28:553
20588992910,2cyclictest827-21runrttasks21:28:553
2058199291,15cyclictest0-21swapper/219:39:112
2058199291,10cyclictest0-21swapper/221:20:072
2058199290,12cyclictest0-21swapper/222:14:472
2057299291,7cyclictest0-21swapper/121:45:571
2057299291,12cyclictest0-21swapper/123:23:531
2057299291,12cyclictest0-21swapper/123:12:431
2058899281,3cyclictest87350irq/126-enp1s0-22:05:263
20588992811,3cyclictest0-21swapper/321:05:533
2058899281,11cyclictest9278-21diskmemload23:51:223
2058899280,5cyclictest0-21swapper/322:31:503
2058199281,13cyclictest0-21swapper/219:58:072
2058199281,13cyclictest0-21swapper/200:37:312
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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