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2025-11-30 - 04:18
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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 30, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
253852327295,20sleep20-21swapper/219:09:382
252212277244,22sleep10-21swapper/119:07:321
254152260225,22sleep00-21swapper/019:10:000
251672258224,22sleep30-21swapper/319:07:063
156232930,0sleep10-21swapper/122:45:151
146912640,0sleep30-21swapper/321:55:373
61592620,0sleep16156-21apt-get21:50:131
98962610,0sleep00-21swapper/021:52:290
324502610,0sleep20-21swapper/200:06:332
259802600,0sleep10-21swapper/122:28:541
216842600,0sleep30-21swapper/321:37:053
240362570,0sleep30-21swapper/323:14:403
162812570,1sleep20-21swapper/221:33:242
149472230,0sleep10-21swapper/123:54:541
131822140,0sleep10-21swapper/123:30:041
326682130,0sleep30-21swapper/300:06:463
275342130,0sleep30-21swapper/322:30:123
8012110,4sleep228-21ksoftirqd/220:35:152
11452110,0sleep00-21swapper/023:20:340
255239994,3cyclictest19982-21systemd-journal19:25:012
255239994,3cyclictest19982-21systemd-journal00:04:152
255149994,3cyclictest19982-21systemd-journal20:01:020
11510290,0sleep00-21swapper/023:51:410
8509280,0sleep30-21swapper/321:51:043
255279985,2cyclictest34-21ksoftirqd/321:30:113
255279983,3cyclictest19982-21systemd-journal22:04:323
255279983,3cyclictest19982-21systemd-journal21:46:363
255279983,3cyclictest19982-21systemd-journal21:21:573
255279983,3cyclictest19982-21systemd-journal20:07:423
255279983,3cyclictest19982-21systemd-journal19:45:293
255239984,3cyclictest19982-21systemd-journal22:39:352
255239983,3cyclictest502-21systemd-logind00:33:272
255239983,3cyclictest502-21systemd-logind00:33:272
255239982,3cyclictest6874-21ls20:50:012
255189983,3cyclictest19982-21systemd-journal21:58:081
255189983,3cyclictest19982-21systemd-journal20:39:491
255189983,3cyclictest19982-21systemd-journal19:52:231
255189982,3cyclictest9950-21munin-run19:45:001
255149984,3cyclictest508-21dbus-daemon21:35:180
255149984,3cyclictest508-21dbus-daemon21:13:120
255149984,3cyclictest19982-21systemd-journal23:19:320
31510270,0sleep30-21swapper/322:55:233
26449270,0sleep20-21swapper/222:52:212
255279974,2cyclictest6195-21timerandwakeup20:45:223
255279974,2cyclictest28039-21cron00:30:003
255279974,2cyclictest11736-21in:imuxsock22:19:323
255279974,2cyclictest11736-21in:imuxsock21:05:163
255279973,3cyclictest508-21dbus-daemon23:30:003
255279973,3cyclictest30654-21snmpd23:48:263
255279973,3cyclictest0-21swapper/322:45:093
255279973,2cyclictest19982-21systemd-journal19:38:043
255279973,1cyclictest0-21swapper/323:56:333
255279973,1cyclictest0-21swapper/323:51:113
255279973,1cyclictest0-21swapper/321:15:133
255279973,1cyclictest0-21swapper/321:12:583
255279972,4cyclictest508-21dbus-daemon20:38:343
255279972,4cyclictest30654-21snmpd00:03:523
255279972,3cyclictest7661-21lldpd23:01:213
255279972,3cyclictest7661-21lldpd20:26:003
255279972,3cyclictest19982-21systemd-journal20:56:063
255279972,3cyclictest19982-21systemd-journal19:22:213
255279971,2cyclictest25853-21memory21:40:183
255239973,3cyclictest508-21dbus-daemon21:45:222
255239973,3cyclictest508-21dbus-daemon20:35:012
255239973,3cyclictest508-21dbus-daemon00:15:002
255239973,3cyclictest4144-21df_inode00:10:142
255239973,3cyclictest22324-21cat20:10:172
255239973,3cyclictest19982-21systemd-journal23:33:482
255239973,3cyclictest11736-21in:imuxsock21:29:022
255239973,3cyclictest0-21swapper/221:24:142
255239973,2cyclictest19982-21systemd-journal23:00:502
255239972,4cyclictest30654-21snmpd22:13:232
255239970,5cyclictest19982-21systemd-journal23:28:472
255189974,2cyclictest19982-21systemd-journal23:48:231
255189974,2cyclictest11736-21in:imuxsock23:40:281
255189973,3cyclictest30847-21ntpq22:55:191
255189973,3cyclictest29741-11brltty19:25:331
255189973,3cyclictest21215-21ntpq23:35:161
255189973,3cyclictest19982-21systemd-journal20:45:001
255189973,3cyclictest19982-21systemd-journal00:33:391
255189973,3cyclictest19982-21systemd-journal00:33:391
255189973,3cyclictest19116-21gdbus20:00:001
255189973,3cyclictest18844-21grep21:35:151
255189973,2cyclictest19982-21systemd-journal21:09:011
255189973,1cyclictest0-21swapper/122:51:551
255189973,1cyclictest0-21swapper/122:43:591
255189973,1cyclictest0-21swapper/121:31:071
255189972,3cyclictest23648-21idleruntime-cro20:15:011
255189970,1cyclictest24360-21ls23:15:011
255149974,2cyclictest502-21systemd-logind22:47:040
255149974,2cyclictest12-21ksoftirqd/019:15:010
255149973,3cyclictest7661-21lldpd23:42:520
255149973,3cyclictest508-21dbus-daemon20:26:530
255149973,3cyclictest508-21dbus-daemon19:46:500
255149973,3cyclictest30654-21snmpd22:09:570
255149973,3cyclictest24328-21awk00:00:230
255149973,3cyclictest16616-21cron00:20:010
255149973,3cyclictest0-21swapper/022:50:140
255149973,3cyclictest0-21swapper/022:13:210
255149973,3cyclictest0-21swapper/021:46:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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