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2026-01-11 - 16:40
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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 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
28419260,0sleep30-21swapper/311:21:273
141409966,0cyclictest0-21swapper/311:26:283
141409964,1cyclictest21007-21users07:20:203
141409963,2cyclictest658-21snmpd07:46:493
141409963,2cyclictest6547-21cat10:10:123
141409963,2cyclictest32680-21ssh11:05:083
141409963,2cyclictest30430-21cron07:45:003
141409963,2cyclictest28539-21ntp_states08:50:183
141409963,2cyclictest26315-21sh10:02:113
141409963,2cyclictest2584-21ssh10:07:313
141409963,2cyclictest25009-21ssh10:20:403
141409963,2cyclictest22907-21ssh12:18:063
141409963,2cyclictest17689-21chrt10:35:363
141409963,2cyclictest15130-21ssh12:12:143
141409963,2cyclictest11951-21apt08:15:123
141409963,1cyclictest141rcu_preempt09:25:093
141409962,3cyclictest8028-21cat10:50:133
141409962,3cyclictest658-21snmpd10:57:463
141409962,3cyclictest658-21snmpd10:49:593
141409962,3cyclictest658-21snmpd09:24:003
141409962,3cyclictest658-21snmpd08:57:033
141409962,3cyclictest658-21snmpd08:46:163
141409962,3cyclictest658-21snmpd08:14:383
141409962,3cyclictest658-21snmpd07:50:443
141409962,3cyclictest658-21snmpd07:36:313
141409962,3cyclictest658-21snmpd07:11:133
141409962,3cyclictest5523-21expr09:30:123
141409962,3cyclictest2493-21fw_packets11:45:133
141409962,3cyclictest21164-21expr08:35:133
141409962,3cyclictest14850-21cat10:15:133
141409962,3cyclictest13677-21cat09:15:153
141409962,3cyclictest10152-21fw_packets11:30:123
141409962,1cyclictest0-21swapper/311:36:353
141409960,5cyclictest5692-21/usr/sbin/munin09:50:173
141409960,1cyclictest2648-21missed_timers12:25:173
141369966,0cyclictest0-21swapper/212:26:252
141369963,2cyclictest8344-21ssh11:29:392
141369963,2cyclictest658-21snmpd10:46:062
141369963,2cyclictest31320-21switchtime09:45:202
141369963,2cyclictest28807-21taskset12:00:362
141369963,2cyclictest275-21systemd-journal11:46:452
141369963,2cyclictest26313-21ssh10:02:112
141369963,2cyclictest24556-21ssh10:20:212
141369963,2cyclictest21874-21sh10:19:402
141369963,2cyclictest21705-21cron10:00:002
141369963,2cyclictest21284-21ssh11:56:112
141369963,2cyclictest21040-21taskset07:20:342
141369963,2cyclictest17360-21ssh11:54:342
141369963,2cyclictest16921-21grep10:55:142
141369963,2cyclictest11518-21ssh11:11:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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