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2023-12-03 - 02:27
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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 rackdslot3.osadl.org (updated Sat Dec 02, 2023 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8255911140,84ptp4l401ktimersoftd/307:05:473
1802121130,5sleep01131-21lldpd11:00:270
825591960,3ptp4l19336-21chrt07:27:513
10361998242,6cyclictest33-21ksoftirqd/209:15:052
10362998114,14cyclictest22339-21cron11:10:003
10362998011,15cyclictest28854-21awk07:50:003
10362997915,19cyclictest10908-21chrt09:26:183
10362997914,20cyclictest17929-21sed12:10:363
825591780,2ptp4l391rcuc/311:45:263
10362997612,13cyclictest1131-21lldpd12:30:413
10362997611,18cyclictest11174-21sed08:20:223
10362997512,14cyclictest28931-21sshd08:57:333
10362997412,15cyclictest17366-21missed_timers09:40:293
10362997411,15cyclictest24982-21runrttasks11:15:203
10362997410,22cyclictest12707-21/usr/sbin/munin07:15:353
10362997410,18cyclictest1736-21latency_hist11:35:003
10361997433,7cyclictest33-21ksoftirqd/210:05:392
10362997313,15cyclictest571-21rs:main3
10362997312,28cyclictest29892-21fschecks_count09:00:273
10361997334,12cyclictest33-21ksoftirqd/208:55:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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