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2026-09-04 - 04:50
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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 rack3slot6.osadl.org (updated Fri Sep 04, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3797210028,19sleep10-21swapper/119:07:401
4204999645,33cyclictest26-21ksoftirqd/100:25:121
269229338,39sleep00-21swapper/019:05:170
98592820,13sleep09862-21missed_timers23:55:280
298852800,4sleep10-21swapper/120:20:011
4204997924,16cyclictest503-21snmpd21:36:531
4204997916,12cyclictest0-21swapper/120:50:301
120582790,7chrt0-21swapper/022:30:350
4204997821,18cyclictest19645-21seq19:50:341
4204997740,27cyclictest26-21ksoftirqd/100:30:161
4198997655,11cyclictest14-21ksoftirqd/019:30:150
420499759,10cyclictest0-21swapper/123:30:351
4204997516,52cyclictest0-21swapper/100:05:201
4204997426,14cyclictest15163-21cat22:40:201
4204997420,20cyclictest457-21dbus-daemon23:05:001
4204997323,16cyclictest20710-21seq19:55:191
4204997213,20cyclictest26-21ksoftirqd/121:25:351
4198997255,10cyclictest14-21ksoftirqd/021:35:120
4204997134,8cyclictest26-21ksoftirqd/123:28:391
4198997146,13cyclictest14-21ksoftirqd/021:44:230
4204997042,18cyclictest26-21ksoftirqd/100:20:131
4198997041,23cyclictest14-21ksoftirqd/023:10:160
4204996932,8cyclictest26-21ksoftirqd/120:38:021
4198996912,17cyclictest0-21swapper/023:40:130
4198996912,17cyclictest0-21swapper/023:40:120
420499682,12cyclictest1-21systemd21:09:001
4198996839,19cyclictest14-21ksoftirqd/022:25:140
4198996749,10cyclictest14-21ksoftirqd/020:35:140
4198996626,35cyclictest0-21swapper/019:10:120
419899656,19cyclictest26134-21apt-get20:10:220
4198996540,16cyclictest14-21ksoftirqd/023:30:170
4198996535,17cyclictest14-21ksoftirqd/022:50:180
4204996418,33cyclictest151rcu_preempt21:20:191
4204996310,47cyclictest0-21swapper/119:15:201
419899637,16cyclictest6291-21apt-get20:45:120
4198996341,18cyclictest14-21ksoftirqd/023:50:190
4198996335,16cyclictest0-21swapper/022:10:150
4198996334,16cyclictest0-21swapper/019:25:140
4198996334,15cyclictest0-21swapper/000:30:150
420499622,10cyclictest168-21usb-storage19:45:301
4204996219,38cyclictest26-21ksoftirqd/122:55:451
4204996219,38cyclictest26-21ksoftirqd/122:55:451
4198996223,33cyclictest243-21systemd-journal21:56:570
4204996115,41cyclictest0-21swapper/123:50:231
4198996134,18cyclictest14-21ksoftirqd/022:20:130
4198996134,17cyclictest14-21ksoftirqd/019:40:150
4198996134,16cyclictest14-21ksoftirqd/022:15:110
4198996133,16cyclictest0-21swapper/022:00:110
4198996132,19cyclictest14-21ksoftirqd/021:05:240
4198996132,19cyclictest14-21ksoftirqd/019:55:160
419899603,22cyclictest7382-21latency_hist23:50:000
4198996020,34cyclictest243-21systemd-journal22:57:090
4198996020,34cyclictest243-21systemd-journal22:57:090
4198996014,41cyclictest22300-21aten2.4-expect23:00:180
4204995935,19cyclictest26-21ksoftirqd/120:05:001
4204995913,21cyclictest26-21ksoftirqd/120:10:451
4198995934,19cyclictest31508-21turbostat20:25:000
4198995934,16cyclictest14-21ksoftirqd/023:35:140
4198995932,17cyclictest14-21ksoftirqd/022:05:140
4198995916,16cyclictest0-21swapper/020:55:120
4198995915,39cyclictest243-21systemd-journal19:36:290
4198995834,19cyclictest8083-21seq19:19:500
4198995830,20cyclictest14-21ksoftirqd/000:20:130
4198995827,17cyclictest14-21ksoftirqd/020:30:120
4198995818,35cyclictest24226-21aten2.4-expect23:05:250
4204995728,13cyclictest6470-21grep23:45:281
4204995712,39cyclictest0-21swapper/120:25:211
419899574,25cyclictest31946-21chrt23:25:310
419899573,49cyclictest29320-21unixbench_singl20:15:470
4198995733,20cyclictest14-21ksoftirqd/021:00:140
4198995730,9cyclictest14-21ksoftirqd/020:00:180
4198995728,18cyclictest0-21swapper/000:15:140
4204995635,15cyclictest16697-21aten2.4_r3power22:45:161
4204995632,18cyclictest26-21ksoftirqd/121:30:351
4204995632,18cyclictest26-21ksoftirqd/121:30:351
4204995624,27cyclictest0-21swapper/122:20:381
4204995620,32cyclictest0-21swapper/123:12:591
4198995642,9cyclictest14-21ksoftirqd/000:10:360
4198995642,9cyclictest14-21ksoftirqd/000:10:360
4198995641,9cyclictest14-21ksoftirqd/021:30:170
4198995641,9cyclictest14-21ksoftirqd/021:30:170
4198995634,16cyclictest14-21ksoftirqd/019:50:360
4198995627,19cyclictest14-21ksoftirqd/023:15:140
4198995626,24cyclictest14-21ksoftirqd/023:20:150
4198995622,29cyclictest0-21swapper/021:11:480
4198995619,32cyclictest8335-21aten2.4-expect19:20:160
4204995517,21cyclictest26-21ksoftirqd/121:04:471
4204995516,22cyclictest28198-21cpuspeed21:45:171
4198995540,9cyclictest14-21ksoftirqd/000:05:010
4198995530,20cyclictest457-21dbus-daemon20:30:000
420499549,40cyclictest0-21swapper/119:20:201
420499548,41cyclictest26-21ksoftirqd/119:25:201
420499548,41cyclictest0-21swapper/119:40:341
4204995437,12cyclictest0-21swapper/122:29:361
4204995437,10cyclictest26-21ksoftirqd/122:15:011
420499542,32cyclictest29286-21awk23:20:001
4204995422,20cyclictest26-21ksoftirqd/120:07:381
4204995416,20cyclictest26-21ksoftirqd/100:01:091
4204995414,19cyclictest0-21swapper/123:05:051
419899546,42cyclictest20524-21tail00:25:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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