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2025-11-23 - 18:48
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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 Nov 23, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
277372277217,48sleep00-21swapper/007:07:110
277862272237,22sleep10-21swapper/107:07:481
279412265230,21sleep30-21swapper/307:09:313
277082260225,22sleep20-21swapper/207:06:482
124632560,0sleep20-21swapper/209:30:392
169422550,0sleep10-21swapper/110:00:551
239982160,0sleep00-21swapper/009:40:510
237952160,0sleep012-21ksoftirqd/011:45:160
284932150,1sleep10-21swapper/110:59:371
28079991411,2cyclictest12-21ksoftirqd/007:50:000
134282140,0sleep00-21swapper/012:25:160
28079991211,1cyclictest12-21ksoftirqd/011:05:000
28079991211,1cyclictest12-21ksoftirqd/009:55:020
2807999119,1cyclictest12-21ksoftirqd/010:30:010
2807999109,1cyclictest12-21ksoftirqd/010:05:010
2807999108,2cyclictest12-21ksoftirqd/012:15:000
2807999108,2cyclictest12-21ksoftirqd/007:25:000
2807999108,1cyclictest12-21ksoftirqd/007:15:010
2807999107,2cyclictest12-21ksoftirqd/012:20:000
2807999107,2cyclictest12-21ksoftirqd/012:05:000
2807999107,2cyclictest12-21ksoftirqd/007:40:010
2807999102,4cyclictest21458-21cron09:40:010
31243290,1sleep10-21swapper/111:26:071
280909994,3cyclictest19982-21systemd-journal11:40:593
280859990,8cyclictest17876-21ssh11:40:232
280799998,1cyclictest12-21ksoftirqd/010:45:020
280799998,1cyclictest12-21ksoftirqd/009:30:000
280799997,1cyclictest12-21ksoftirqd/011:55:010
280799997,1cyclictest12-21ksoftirqd/011:40:000
280799997,1cyclictest12-21ksoftirqd/010:40:010
280799997,1cyclictest12-21ksoftirqd/010:15:010
280799996,2cyclictest12-21ksoftirqd/011:45:000
280799996,2cyclictest12-21ksoftirqd/010:20:010
280799995,3cyclictest12-21ksoftirqd/009:35:000
931280,0chrt0-21swapper/212:17:072
280909988,0cyclictest0-21swapper/312:00:123
280909984,3cyclictest21452-21cron09:40:013
280909983,3cyclictest19982-21systemd-journal12:07:133
280859987,1cyclictest28-21ksoftirqd/207:35:002
280859984,3cyclictest508-21dbus-daemon09:20:002
280859982,3cyclictest27051-21perf10:10:012
280829985,2cyclictest30654-21snmpd12:10:161
280829984,3cyclictest19982-21systemd-journal12:33:081
280829984,3cyclictest19982-21systemd-journal12:33:081
280829982,3cyclictest18750irq/134-ahci[0009:55:011
280799987,1cyclictest12-21ksoftirqd/012:00:010
280799987,1cyclictest12-21ksoftirqd/009:45:020
280799987,1cyclictest12-21ksoftirqd/009:15:000
280799987,1cyclictest12-21ksoftirqd/009:00:020
280799987,1cyclictest12-21ksoftirqd/008:45:010
280799986,1cyclictest131rcuc/011:30:000
280799985,2cyclictest12-21ksoftirqd/008:00:000
280799985,1cyclictest141rcu_preempt09:55:130
280799984,1cyclictest4453-21perf08:40:010
280799984,1cyclictest4453-21perf08:40:010
280799982,2cyclictest141rcu_preempt08:05:130
280799982,1cyclictest141rcu_preempt09:05:190
20330280,0sleep20-21swapper/210:04:562
3082270,0sleep00-21swapper/009:24:160
280909974,2cyclictest11736-21in:imuxsock10:43:003
280909973,3cyclictest7661-21lldpd10:12:243
280909973,3cyclictest508-21dbus-daemon11:02:373
280909973,3cyclictest30654-21snmpd11:49:193
280909973,3cyclictest19982-21systemd-journal09:34:293
280909973,3cyclictest19982-21systemd-journal07:30:153
280909973,3cyclictest1670-21sed08:30:203
280909973,1cyclictest0-21swapper/310:59:233
280909972,3cyclictest19982-21systemd-journal11:28:043
280909971,3cyclictest23715-21rm10:06:163
280909971,2cyclictest0-21swapper/310:21:203
280909970,3cyclictest19982-21systemd-journal07:43:273
280909970,2cyclictest19982-21systemd-journal08:04:033
280859974,2cyclictest11736-21in:imuxsock08:40:012
280859974,2cyclictest11736-21in:imuxsock08:40:012
280859973,3cyclictest508-21dbus-daemon09:55:022
280859973,3cyclictest4023-21ntpq11:55:162
280859973,3cyclictest31585-21systemctl08:25:202
280859973,3cyclictest19982-21systemd-journal11:14:392
280859973,3cyclictest10423-21cat10:45:142
280859973,2cyclictest19982-21systemd-journal11:45:102
280859973,2cyclictest19982-21systemd-journal09:30:012
280859973,1cyclictest0-21swapper/211:00:262
280859973,1cyclictest0-21swapper/210:37:192
280859973,1cyclictest0-21swapper/209:54:032
280859972,4cyclictest28474-21sshd10:59:362
280859972,3cyclictest19982-21systemd-journal12:33:582
280859972,3cyclictest19982-21systemd-journal12:33:582
280859972,3cyclictest19982-21systemd-journal11:53:132
280859972,3cyclictest19982-21systemd-journal08:05:002
280859972,3cyclictest19982-21systemd-journal07:16:302
280829975,1cyclictest18750irq/134-ahci[0011:20:001
280829974,2cyclictest14514-21cron07:50:001
280829973,3cyclictest9308-21basename10:45:011
280829973,3cyclictest7661-21lldpd12:18:271
280829973,3cyclictest508-21dbus-daemon11:55:001
280829973,3cyclictest508-21dbus-daemon07:10:401
280829973,3cyclictest20197-21ntpq08:00:161
280829973,3cyclictest19662-21cat09:10:201
280829973,2cyclictest30654-21snmpd11:43:211
280829973,2cyclictest19982-21systemd-journal07:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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