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2025-11-10 - 16:00
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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 10 highest latencies:
System rackdslot1.osadl.org (updated Mon Nov 10, 2025 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2957521580,6sleep3655999cyclictest09:17:253
265321320,4sleep12655-21df_abs09:30:151
2847191790,3ptp4l0-21swapper/109:25:251
2847191770,2ptp4l1293-21snmpd09:19:560
655899752,69cyclictest0-21swapper/209:40:132
6558997413,37cyclictest207-21systemd-journal09:53:082
6558997410,53cyclictest207-21systemd-journal09:34:362
6558997215,54cyclictest31839-21taskset09:21:232
6558997213,56cyclictest581-21fschecks_time08:05:162
6558997114,16cyclictest9053-21sort07:15:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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