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2026-03-17 - 17:06
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Tue Mar 17, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380916423380,9sleep00-21swapper/007:05:240
38100172274184,29sleep10-21swapper/107:08:311
383241821550,8sleep126-21ksoftirqd/108:05:001
394516421260,3sleep0161rcuc/011:10:040
39666452610,5sleep10-21swapper/111:40:161
39460662590,1sleep10-21swapper/111:10:211
179699560,3rtkit-daemon1795-21rtkit-daemon11:20:271
179699560,3rtkit-daemon0-21swapper/010:55:280
179699540,3rtkit-daemon1795-21rtkit-daemon08:48:121
179699530,4rtkit-daemon1795-21rtkit-daemon11:51:481
179699520,6rtkit-daemon3879384-21ssh09:37:120
179699500,4rtkit-daemon1795-21rtkit-daemon09:29:550
179699500,4rtkit-daemon1795-21rtkit-daemon08:45:120
179699500,3rtkit-daemon1795-21rtkit-daemon09:51:011
179699500,3rtkit-daemon0-21swapper/011:33:150
179699490,3rtkit-daemon1795-21rtkit-daemon09:13:041
179699490,3rtkit-daemon1795-21rtkit-daemon07:31:090
179699490,3rtkit-daemon0-21swapper/010:08:060
179699490,3rtkit-daemon0-21swapper/009:32:580
179699480,4rtkit-daemon1795-21rtkit-daemon07:46:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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