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2026-01-12 - 00:20
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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 Sun Jan 11, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139272300269,21sleep10-21swapper/107:08:571
137802298268,19sleep20-21swapper/207:07:052
137202272241,21sleep00-21swapper/007:06:180
137812257225,21sleep30-21swapper/307:07:053
276572590,0sleep10-21swapper/110:22:441
314412570,0sleep00-21swapper/012:23:190
281162570,0sleep00-21swapper/009:44:020
86412550,1sleep20-21swapper/212:08:392
302482550,0sleep30-21swapper/312:01:433
132992550,0sleep20-21swapper/210:14:272
269052540,1sleep00-21swapper/011:40:140
12652530,0sleep30-21swapper/311:44:513
314172180,0sleep30-21swapper/312:23:183
236962160,0sleep00-21swapper/011:38:300
182772150,0sleep30-21swapper/311:15:193
266572140,0sleep10-21swapper/109:23:131
49062120,0sleep10-21swapper/112:26:281
49912110,0sleep20-21swapper/209:10:122
6378280,1sleep228-21ksoftirqd/210:29:542
141409987,1cyclictest34-21ksoftirqd/310:00:003
141409984,2cyclictest275-21systemd-journal07:57:283
141369984,3cyclictest275-21systemd-journal11:07:172
141319983,3cyclictest275-21systemd-journal07:50:101
12664280,0sleep30-21swapper/311:12:063
11458280,0sleep30-21swapper/310:32:103
30371270,0sleep20-21swapper/212:22:302
141409976,1cyclictest34-21ksoftirqd/308:45:013
141409974,2cyclictest658-21snmpd09:13:333
141409974,2cyclictest504-21dbus-daemon08:30:003
141409974,2cyclictest501-21in:imuxsock12:40:013
141409974,2cyclictest275-21systemd-journal08:24:023
141409974,2cyclictest21110-21cron09:40:013
141409973,3cyclictest275-21systemd-journal10:29:373
141409972,3cyclictest275-21systemd-journal11:01:023
141409972,2cyclictest31507-21expr09:45:223
141369973,3cyclictest504-21dbus-daemon09:55:002
141369973,3cyclictest25058-21ntpq10:40:182
141369973,3cyclictest14715-21ssh10:34:412
141319974,2cyclictest17389-21cron11:35:001
141319973,3cyclictest658-21snmpd08:48:571
141319970,4cyclictest275-21systemd-journal11:10:011
141289975,1cyclictest32146-21systemctl07:45:190
141289973,3cyclictest275-21systemd-journal11:20:000
141289973,2cyclictest275-21systemd-journal09:19:270
141289973,1cyclictest0-21swapper/009:35:570
141289971,5cyclictest8606-21/usr/sbin/munin11:10:170
14025270,0sleep10-21swapper/110:34:081
12703270,0sleep10-21swapper/111:50:561
4432260,0sleep20-21swapper/210:08:592
28419260,0sleep30-21swapper/311:21:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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