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2025-12-10 - 23:14
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Wed Dec 10, 2025 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16016882261189,26sleep00-21swapper/007:09:270
16015762245202,28sleep10-21swapper/107:08:171
175208021110,4sleep00-21swapper/011:23:530
125899740,4rtkit-daemon1257-21rtkit-daemon10:17:400
125899730,4rtkit-daemon1257-21rtkit-daemon10:24:500
125899730,3rtkit-daemon1257-21rtkit-daemon09:15:220
125899720,3rtkit-daemon1257-21rtkit-daemon09:32:140
125899710,4rtkit-daemon1257-21rtkit-daemon09:13:160
160187999633,40cyclictest1673990-21apt-get09:40:151
125899610,4rtkit-daemon1257-21rtkit-daemon09:06:111
160187999580,8cyclictest1732667-21ssh10:56:491
160187999572,40cyclictest1630700-40apt-check08:20:101
160187999572,36cyclictest1670065-21apt-get09:35:141
160187999570,9cyclictest1608197-21seq07:24:381
125899570,4rtkit-daemon1257-21rtkit-daemon11:38:060
160187999558,27cyclictest0-21swapper/107:30:211
160187999550,8cyclictest1764635-21if_enp2s011:40:171
160187999543,6cyclictest1624572-21apt-get08:05:141
160187999542,6cyclictest1614801-21apt-get07:40:151
160187999539,5cyclictest1644386-21seq08:51:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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