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2025-11-20 - 12:02
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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 rackaslot8.osadl.org (updated Thu Nov 20, 2025 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307662304271,21sleep20-21swapper/219:08:122
307272269235,22sleep30-21swapper/319:07:413
305602268234,22sleep00-21swapper/019:05:300
306692258225,21sleep10-21swapper/119:06:551
74712660,0sleep20-21swapper/223:04:182
154382630,0sleep00-21swapper/022:24:440
34052620,0sleep10-21swapper/100:08:151
272932590,0sleep30-21swapper/300:02:093
271942580,0sleep00-21swapper/022:32:240
231822550,0sleep30-21swapper/323:37:133
115432530,0sleep30-21swapper/321:12:023
106942370,0sleep20-21swapper/221:35:022
86932190,0sleep00-21swapper/023:50:000
32652190,0sleep00-21swapper/021:52:240
60362180,0sleep00-21swapper/022:40:210
203172150,0sleep30-21swapper/323:13:043
163142140,0sleep00-21swapper/023:32:510
48262130,0sleep30-21swapper/300:09:343
3104399120,3cyclictest27294-21date22:10:012
296092120,0sleep30-21swapper/321:25:153
109492120,0sleep20-21swapper/221:58:032
3103699119,1cyclictest12-21ksoftirqd/021:40:010
3104399109,1cyclictest28-21ksoftirqd/200:35:022
3104399106,3cyclictest25096-21apt-get00:25:112
3104399106,3cyclictest25096-21apt-get00:25:112
3104399105,4cyclictest19187-21apt-get23:35:022
3103699109,1cyclictest12-21ksoftirqd/000:00:000
310479994,3cyclictest19982-21systemd-journal20:50:123
310479994,3cyclictest19982-21systemd-journal20:06:443
310439994,3cyclictest19982-21systemd-journal20:18:012
310439993,4cyclictest19982-21systemd-journal20:13:252
310439991,5cyclictest6613-21wc00:10:152
310439990,6cyclictest31636-21ssh23:20:252
310439990,6cyclictest21611-21ssh21:19:362
310439990,6cyclictest16464-21ssh22:01:402
310439990,6cyclictest14754-21ssh23:53:552
310439990,2cyclictest0-21swapper/200:20:002
310369994,3cyclictest19982-21systemd-journal20:59:190
310369994,3cyclictest19982-21systemd-journal00:33:210
310369990,8cyclictest5691-21ssh00:35:060
310479986,1cyclictest34-21ksoftirqd/300:35:003
310479985,2cyclictest34-21ksoftirqd/300:15:013
310479984,3cyclictest19982-21systemd-journal22:17:203
310479983,3cyclictest19982-21systemd-journal22:48:133
310479983,3cyclictest19982-21systemd-journal20:45:083
310479982,3cyclictest19982-21systemd-journal19:55:053
310439986,1cyclictest31870-21apt-get21:50:142
310439985,2cyclictest26441-21grep21:45:192
310439984,3cyclictest4243-21smartctl21:00:202
310439984,3cyclictest3029-21idleruntime-cro19:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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