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2023-12-10 - 07:19
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack1slot3.osadl.org (updated Tue Oct 10, 2023 10:56:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121398540,15rtkit-daemon400614-21irqstats07:25:291
4539852470,7chrt453988-21unixbench_singl09:45:432
121398470,21rtkit-daemon1-21systemd10:19:541
393979994435,3cyclictest0-21swapper/309:15:013
393979994334,3cyclictest0-21swapper/310:31:323
121398430,8rtkit-daemon1-21systemd09:49:311
121398430,4rtkit-daemon0-21swapper/107:20:301
121398430,16rtkit-daemon404640-21ps07:35:331
39397999423,34cyclictest452525-21turbostat09:49:563
39397999422,35cyclictest425858-21turbostat08:39:563
39397999422,34cyclictest414775-21turbostat08:09:553
39397999413,32cyclictest424013-21turbostat08:34:563
39397999409,24cyclictest420306-21turbostat08:24:563
39397999402,33cyclictest468096-21turbostat10:29:563
39397999402,31cyclictest460702-21turbostat10:09:563
393979993930,4cyclictest0-21swapper/309:35:253
39397999392,33cyclictest437215-21turbostat09:09:563
393979993916,16cyclictest4146002sleep308:03:083
39397999383,29cyclictest466230-21turbostat10:24:553
39397999383,29cyclictest395729-21turbostat07:19:553
393979993828,4cyclictest0-21swapper/309:26:383
39397999382,32cyclictest411070-21turbostat07:59:553
393979993812,22cyclictest393834-21turbostat07:14:553
121398380,13rtkit-daemon1-21systemd08:22:541
121398380,10rtkit-daemon1-21systemd09:10:191
393979993729,3cyclictest0-21swapper/307:26:313
393979993728,4cyclictest0-21swapper/310:49:413
393979993728,3cyclictest0-21swapper/307:30:313
121398370,15rtkit-daemon1-21systemd08:29:051
393979993627,3cyclictest0-21swapper/308:56:313
393979993627,3cyclictest0-21swapper/308:17:313
393979993626,4cyclictest0-21swapper/307:52:313
121398360,21rtkit-daemon1-21systemd07:08:221
121398360,15rtkit-daemon280-21plymouthd10:40:251
121398360,10rtkit-daemon1-21systemd08:48:411
393979993526,4cyclictest0-21swapper/308:26:313
393979993526,3cyclictest0-21swapper/310:14:363
393979993526,3cyclictest0-21swapper/309:31:323
393979993525,4cyclictest0-21swapper/308:14:563
393979993514,15cyclictest4739822sleep310:40:253
393979993511,16cyclictest4313852sleep308:46:473
121398350,7rtkit-daemon280-21plymouthd09:29:021
393979993426,4cyclictest0-21swapper/310:50:343
393979993426,3cyclictest0-21swapper/310:35:383
393979993425,3cyclictest0-21swapper/309:59:563
393979993425,3cyclictest0-21swapper/307:36:313
393979993424,4cyclictest0-21swapper/309:51:323
393979993424,3cyclictest0-21swapper/307:22:313
39397999342,26cyclictest431666-21turbostat08:54:553
393979993415,14cyclictest4417282sleep309:15:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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