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2025-11-28 - 21:52
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Fri Nov 28, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230852305234,22sleep30-21swapper/307:06:183
233182277244,21sleep10-21swapper/107:09:181
231302275208,20sleep00-21swapper/007:06:510
231792263226,22sleep20-21swapper/207:07:302
258772650,0sleep10-21swapper/109:46:381
45052190,0sleep00-21swapper/011:45:010
206962180,0sleep30-21swapper/311:57:503
215102150,0sleep30-21swapper/310:10:143
56632140,0sleep10-21swapper/112:37:591
261932140,0sleep30-21swapper/309:47:033
171372110,0sleep10-21swapper/110:05:471
45402100,0sleep00-21swapper/011:16:260
2352299109,1cyclictest28-21ksoftirqd/211:59:592
2352299108,1cyclictest28-21ksoftirqd/210:30:002
31620290,0sleep20-21swapper/212:05:452
235249994,3cyclictest19982-21systemd-journal09:37:583
235249994,3cyclictest19982-21systemd-journal09:37:583
235229994,3cyclictest19982-21systemd-journal08:51:242
235229994,3cyclictest19982-21systemd-journal08:41:392
235139994,3cyclictest19982-21systemd-journal08:34:090
235249986,1cyclictest34-21ksoftirqd/307:15:013
235249984,3cyclictest508-21dbus-daemon09:05:003
235249984,3cyclictest31572-21ssh12:33:133
235249983,4cyclictest0-21swapper/308:40:013
235249983,3cyclictest19982-21systemd-journal11:50:283
235249980,7cyclictest34-21ksoftirqd/310:50:103
235249980,4cyclictest29970-21taskset11:38:433
235229985,2cyclictest508-21dbus-daemon09:58:522
235229985,2cyclictest11736-21in:imuxsock10:13:522
235229984,3cyclictest508-21dbus-daemon09:40:542
235229983,4cyclictest0-21swapper/211:10:122
235229983,3cyclictest19982-21systemd-journal11:35:142
235229981,6cyclictest28-21ksoftirqd/212:20:152
235229980,5cyclictest141rcu_preempt10:35:162
235179984,3cyclictest19982-21systemd-journal07:12:241
235139984,3cyclictest508-21dbus-daemon08:40:010
235139984,3cyclictest19982-21systemd-journal11:10:240
235139984,2cyclictest19982-21systemd-journal07:19:250
235139983,3cyclictest19982-21systemd-journal08:24:580
18952280,0sleep10-21swapper/112:21:461
18166280,0sleep30-21swapper/309:13:233
13176280,3sleep3341ksoftirqd/312:17:033
235249975,1cyclictest34-21ksoftirqd/309:30:013
235249974,2cyclictest34-21ksoftirqd/307:30:003
235249973,3cyclictest7661-21lldpd12:39:113
235249973,3cyclictest508-21dbus-daemon10:46:253
235249973,3cyclictest508-21dbus-daemon07:34:043
235249973,3cyclictest4426-21sed08:50:003
235249973,3cyclictest30654-21snmpd10:00:273
235249973,3cyclictest19982-21systemd-journal07:48:413
235249973,3cyclictest19982-21systemd-journal07:24:423
235249973,3cyclictest0-21swapper/311:25:143
235249973,3cyclictest0-21swapper/311:11:523
235249973,3cyclictest0-21swapper/311:05:483
235249973,1cyclictest0-21swapper/312:22:303
235249973,1cyclictest0-21swapper/311:34:423
235249973,1cyclictest0-21swapper/311:34:413
235249973,1cyclictest0-21swapper/310:39:593
235249973,1cyclictest0-21swapper/310:34:573
235249972,4cyclictest19403-21taskset11:00:313
235249972,3cyclictest19982-21systemd-journal10:30:003
235249971,4cyclictest19982-21systemd-journal08:00:213
235249970,3cyclictest4241-21latency_hist11:45:013
235229974,2cyclictest28-21ksoftirqd/209:10:022
235229974,2cyclictest27285-21ntpq09:20:172
235229974,2cyclictest19982-21systemd-journal08:30:482
235229974,2cyclictest11736-21in:imuxsock09:20:012
235229973,3cyclictest7661-21lldpd08:47:462
235229973,3cyclictest508-21dbus-daemon10:17:372
235229973,3cyclictest508-21dbus-daemon07:39:552
235229973,3cyclictest30654-21snmpd10:55:572
235229973,3cyclictest19982-21systemd-journal11:30:282
235229973,3cyclictest19982-21systemd-journal11:30:282
235229971,5cyclictest0-21swapper/211:15:112
235229971,4cyclictest19982-21systemd-journal08:03:162
235229971,3cyclictest24992-21rm09:45:272
235229970,7cyclictest0-21swapper/210:20:212
235229970,1cyclictest12074-21diskstats09:35:142
235229970,1cyclictest12074-21diskstats09:35:142
235179974,2cyclictest19982-21systemd-journal09:40:021
235179974,2cyclictest19982-21systemd-journal09:40:021
235179974,2cyclictest12688-21pmu-power10:55:171
235179974,2cyclictest11736-21in:imuxsock12:00:291
235179973,3cyclictest737-21users11:40:211
235179973,3cyclictest508-21dbus-daemon11:40:001
235179973,3cyclictest30564-21ntpq12:05:191
235179973,3cyclictest19982-21systemd-journal09:02:241
235179973,3cyclictest19982-21systemd-journal08:55:261
235179973,3cyclictest15079-21cat10:30:221
235179973,3cyclictest12787-21expr07:55:121
235179973,2cyclictest19982-21systemd-journal12:17:471
235179973,2cyclictest19982-21systemd-journal07:40:191
235179973,2cyclictest19982-21systemd-journal07:40:191
235179973,1cyclictest0-21swapper/110:35:181
235179973,1cyclictest0-21swapper/109:20:591
235179973,1cyclictest0-21swapper/109:18:351
235179972,3cyclictest7661-21lldpd10:44:371
235179972,3cyclictest19982-21systemd-journal12:33:231
235179972,3cyclictest19982-21systemd-journal10:22:371
235179971,5cyclictest0-21swapper/112:14:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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