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2025-12-09 - 16:10
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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 Tue Dec 09, 2025 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25326742269206,48sleep00-21swapper/007:05:280
25333732259186,58sleep10-21swapper/107:07:181
2533755991936,173cyclictest2616010-21expr09:55:151
2533751991867,165cyclictest2616320-21if_enp2s009:55:200
2533751991276,107cyclictest2612878-21cut09:50:180
25337519912536,74cyclictest2605542-21needreboot09:40:200
253375599914,73cyclictest2612878-21needreboot09:50:191
27167722670,7sleep1251rcuc/112:09:071
125899610,4rtkit-daemon1257-21rtkit-daemon10:19:191
26479302590,8sleep0161rcuc/010:36:080
125899570,6rtkit-daemon2581733-21diskmemload09:15:120
125899570,4rtkit-daemon1257-21rtkit-daemon10:46:121
125899570,4rtkit-daemon1257-21rtkit-daemon10:46:121
125899530,4rtkit-daemon1257-21rtkit-daemon10:33:211
125899490,3rtkit-daemon0-21swapper/008:12:250
125899460,3rtkit-daemon0-21swapper/008:35:220
125899450,4rtkit-daemon2589760-21apt-get09:20:141
125899450,3rtkit-daemon0-21swapper/012:27:010
125899440,3rtkit-daemon0-21swapper/009:48:390
125899440,3rtkit-daemon0-21swapper/008:04:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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