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2026-04-28 - 15:55
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Tue Apr 28, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8429992335264,56sleep10-21swapper/119:08:191
8414042266223,28sleep00-21swapper/019:05:080
84336999633,10cyclictest1040399-21apt-get00:25:150
84336999612,7cyclictest979746-21apt-get23:05:140
179699600,4rtkit-daemon1795-21rtkit-daemon21:20:081
179699590,4rtkit-daemon1795-21rtkit-daemon20:53:591
84336999583,9cyclictest1032814-21apt-get00:15:160
179699580,3rtkit-daemon1795-21rtkit-daemon22:28:001
179699570,4rtkit-daemon1795-21rtkit-daemon23:01:520
179699570,4rtkit-daemon1795-21rtkit-daemon22:53:450
84336999562,7cyclictest987173-21apt-get23:15:150
84336999542,6cyclictest914950-21apt-get21:40:140
84336999531,12cyclictest1006700-21diskstats23:40:150
84336999521,14cyclictest941591-21apt-get22:15:130
84336999521,12cyclictest907477-21apt-get21:30:130
84336999512,8cyclictest1013814-21apt-get23:50:130
179699480,3rtkit-daemon1795-21rtkit-daemon21:09:501
10392822460,2sleep00-21swapper/000:23:150
179699450,2rtkit-daemon1795-21rtkit-daemon21:29:520
84336999443,9cyclictest881565-21apt-get20:45:140
843369994212,9cyclictest879619-21apt-get20:40:130
843369994210,8cyclictest920239-21users21:45:270
84336999413,8cyclictest983573-21apt-get23:10:140
84336999403,8cyclictest873742-21apt-get20:25:120
84336999403,8cyclictest852234-21apt-get19:30:120
84336999403,6cyclictest877642-21apt-get20:35:140
84336999402,7cyclictest1018028-21apt-get23:55:130
84336999401,10cyclictest865924-21apt-get20:05:130
84336999392,8cyclictest867873-21apt-get20:10:120
84336999391,9cyclictest990936-21apt-get23:20:120
179699390,7rtkit-daemon900940-21swap21:20:230
84336999383,7cyclictest850282-21apt-get19:25:140
84336999382,8cyclictest856157-21apt-get19:40:120
84336999382,7cyclictest934086-21apt-get22:05:120
84338599370,36cyclictest0-21swapper/123:35:471
84336999373,9cyclictest875694-21apt-get20:30:140
84336999373,9cyclictest863975-21apt-get20:00:140
84336999372,7cyclictest949078-21apt-get22:25:140
84336999372,6cyclictest854184-21apt-get19:35:140
84336999372,5cyclictest922739-21apt-get21:50:140
84336999372,12cyclictest895882-21apt-get21:15:140
179699370,6rtkit-daemon861271-21sed19:50:250
179699370,6rtkit-daemon1005227-21ssh23:38:000
179699370,4rtkit-daemon1051483-21latency_hist00:40:010
179699370,3rtkit-daemon0-21swapper/122:08:571
84336999363,8cyclictest869822-21apt-get20:15:150
84336999362,9cyclictest998405-21apt-get23:30:120
84336999361,13cyclictest871794-21apt-get20:20:120
179699360,5rtkit-daemon963296-21ssh22:43:550
84336999357,4cyclictest0-21swapper/022:00:210
84336999353,9cyclictest1044165-21apt-get00:30:140
84336999352,8cyclictest885460-21apt-get20:55:130
84336999352,10cyclictest848334-21apt-get19:20:140
84336999351,10cyclictest952765-21apt-get22:30:140
179699350,3rtkit-daemon0-21swapper/121:02:261
179699350,3rtkit-daemon0-21swapper/119:47:330
179699350,3rtkit-daemon0-21swapper/022:00:411
843385993430,3cyclictest18150irq/39-mmc021:59:551
843385993411,5cyclictest26-21ksoftirqd/123:20:111
84336999343,7cyclictest883510-21apt-get20:50:130
179699340,3rtkit-daemon0-21swapper/023:41:091
179699340,3rtkit-daemon0-21swapper/023:34:201
179699330,5rtkit-daemon893-21snmpd21:07:280
179699330,3rtkit-daemon1795-21rtkit-daemon22:31:201
179699330,3rtkit-daemon1795-21rtkit-daemon20:23:501
179699330,3rtkit-daemon0-21swapper/121:37:590
179699330,3rtkit-daemon0-21swapper/121:02:330
179699330,3rtkit-daemon0-21swapper/022:49:571
843385993211,4cyclictest26-21ksoftirqd/122:11:461
84336999322,7cyclictest1021776-21apt-get00:00:140
84336999322,6cyclictest1029044-21apt-get00:10:130
179699320,5rtkit-daemon893-21snmpd22:57:570
843385993128,2cyclictest66950irq/132-enp2s022:19:421
84336999312,7cyclictest1010104-21apt-get23:45:150
84336999311,7cyclictest994766-21apt-get23:25:140
179699310,3rtkit-daemon0-21swapper/023:04:041
84336999301,7cyclictest956679-21apt-get22:35:100
179699300,4rtkit-daemon1795-21rtkit-daemon00:32:151
179699300,3rtkit-daemon1795-21rtkit-daemon20:38:051
179699300,3rtkit-daemon1795-21rtkit-daemon19:26:591
179699300,3rtkit-daemon1795-21rtkit-daemon00:14:371
179699300,3rtkit-daemon0-21swapper/000:21:071
179699300,3rtkit-daemon0-21swapper/000:17:471
843385992916,2cyclictest26-21ksoftirqd/100:00:171
179699290,3rtkit-daemon1795-21rtkit-daemon20:33:511
179699290,3rtkit-daemon0-21swapper/022:35:531
179699290,3rtkit-daemon0-21swapper/020:14:541
84338599289,5cyclictest26-21ksoftirqd/121:30:221
179699280,3rtkit-daemon0-21swapper/020:17:191
84338599271,8cyclictest981244-21ssh23:05:441
84338599270,7cyclictest0-21swapper/123:10:141
84338599270,6cyclictest0-21swapper/123:55:591
179699270,3rtkit-daemon0-21swapper/023:15:171
179699270,3rtkit-daemon0-21swapper/019:44:571
179699270,1rtkit-daemon1795-21rtkit-daemon19:50:171
843385992613,7cyclictest66950irq/132-enp2s021:10:131
179699260,3rtkit-daemon0-21swapper/121:10:180
179699260,22rtkit-daemon13-21ksoftirqd/019:56:040
9697642250,5sleep10-21swapper/122:51:121
843385992522,2cyclictest66950irq/132-enp2s021:54:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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