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2026-04-14 - 08:06
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Tue Apr 14, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9715852269191,28sleep10-21swapper/119:07:401
9714642267187,27sleep00-21swapper/019:06:220
97195499572,35cyclictest1157496-21apt-get00:25:140
97195499563,34cyclictest1014389-21appstreamcli20:55:040
97195499542,35cyclictest1066899-21apt-get22:15:140
179699530,4rtkit-daemon1795-21rtkit-daemon21:58:410
97195499522,33cyclictest1020969-21apt-get21:10:120
97195499522,32cyclictest1098745-21apt-get23:00:130
97195499522,32cyclictest1063455-21apt-get22:10:130
97195499512,31cyclictest1031904-21apt-get21:25:130
97195499501,31cyclictest1143956-21apt-get00:05:130
971954995012,19cyclictest1041865-21sh21:39:180
971954995012,18cyclictest1093910-21sh22:53:400
179699500,4rtkit-daemon1795-21rtkit-daemon22:20:551
179699500,4rtkit-daemon1795-21rtkit-daemon21:32:120
179699490,4rtkit-daemon1795-21rtkit-daemon19:11:340
97195499471,35cyclictest1119095-21ssh23:29:370
97195499471,34cyclictest1125059-21ssh23:37:220
97195499470,4cyclictest1020292-21diskmemload22:04:230
179699470,3rtkit-daemon1795-21rtkit-daemon19:22:460
97195499461,8cyclictest1030590-21ssh21:22:220
97195499461,3cyclictest1147266-21apt-get00:10:140
97195499461,30cyclictest1153968-21apt-get00:20:140
97195499461,27cyclictest1088486-21needreboot22:45:200
971954994610,20cyclictest1108178-21sh23:13:190
97195499451,8cyclictest1115501-21ssh23:24:240
97195499451,8cyclictest1026713-21ssh21:16:520
97195499451,7cyclictest1127959-21ssh23:41:090
97195499446,21cyclictest0-21swapper/020:31:230
97195499442,5cyclictest1164429-21apt-get00:35:140
97195499440,8cyclictest997865-21perf20:15:010
97195499432,28cyclictest1020292-21diskmemload22:31:560
97195499431,8cyclictest1102481-21fschecks_time23:05:180
97195499431,4cyclictest1140375-21apt-get00:00:130
97195499430,9cyclictest1086930-21ssh22:43:260
97195499430,8cyclictest1075890-21ssh22:26:490
97195499430,7cyclictest1112125-21ssh23:19:380
97195499421,5cyclictest1020292-21diskmemload22:25:000
97195499420,7cyclictest1135149-21ssh23:51:230
179699420,3rtkit-daemon0-21swapper/023:50:171
97195499412,26cyclictest1020292-21diskmemload23:57:030
97195499411,8cyclictest1020292-21diskmemload00:15:110
97195499411,7cyclictest992977-21ntp_states20:00:220
97195499411,3cyclictest1160962-21apt-get00:30:130
97195499411,27cyclictest1020292-21diskmemload23:45:020
97195499411,23cyclictest1020292-21diskmemload21:50:210
97195499411,10cyclictest1019312-21ntp_states21:05:210
97195499410,7cyclictest1084028-21munin-run22:40:010
97195499410,3cyclictest1044933-21ssh21:43:260
97195499401,9cyclictest991005-21ntp_states19:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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