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2025-12-02 - 08:23
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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 Tue Dec 02, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23982290254,21sleep20-21swapper/219:07:332
22902273240,22sleep10-21swapper/119:06:151
23292269234,22sleep30-21swapper/319:06:453
22502262234,18sleep00-21swapper/019:05:460
269212640,1sleep30-21swapper/323:38:343
40202630,0sleep30-21swapper/321:37:173
143112630,0sleep20-21swapper/221:44:292
153242620,0sleep10-21swapper/122:48:311
126652600,0sleep00-21swapper/021:22:200
258752590,0sleep20-21swapper/222:34:272
134952570,0sleep20-21swapper/221:23:022
284822530,0sleep10-21swapper/122:35:221
164662190,0sleep00-21swapper/020:50:130
281742180,0sleep30-21swapper/323:18:163
90822140,0sleep30-21swapper/319:20:193
240142140,0sleep10-21swapper/123:58:061
155612130,0sleep10-21swapper/120:45:211
27319994,3cyclictest19982-21systemd-journal23:53:393
27279994,3cyclictest19982-21systemd-journal19:57:422
27279991,5cyclictest2820-21grep20:20:012
6340280,0sleep00-21swapper/022:00:130
28123280,1sleep328122-21ntp_states22:35:203
27319984,3cyclictest508-21dbus-daemon23:32:103
27319983,3cyclictest508-21dbus-daemon20:05:383
27319983,3cyclictest19982-21systemd-journal20:57:223
27319980,1cyclictest12411-21ssh21:22:073
27279984,3cyclictest508-21dbus-daemon23:26:192
27279984,3cyclictest508-21dbus-daemon23:16:442
27279984,3cyclictest19982-21systemd-journal19:43:572
27279983,3cyclictest19982-21systemd-journal19:32:372
27279983,3cyclictest19982-21systemd-journal00:04:172
27239985,2cyclictest11736-21in:imuxsock22:08:191
27239984,3cyclictest508-21dbus-daemon00:20:001
27239984,3cyclictest19982-21systemd-journal20:28:151
27239980,5cyclictest503-21apt21:15:001
27199985,2cyclictest11736-21in:imuxsock22:37:310
27199984,1cyclictest23756-21turbostat21:30:000
27319974,2cyclictest34-21ksoftirqd/319:35:003
27319974,2cyclictest26358-21cups-browsed00:00:393
27319974,2cyclictest19982-21systemd-journal20:26:553
27319974,2cyclictest11736-21in:imuxsock21:25:143
27319973,3cyclictest7354-21cron23:05:013
27319973,3cyclictest7132-21ntp_kernel_err23:25:183
27319973,3cyclictest13747-21sshd00:37:463
27319973,3cyclictest0-21swapper/323:12:233
27319973,1cyclictest0-21swapper/323:00:233
27319973,1cyclictest0-21swapper/322:16:023
27319973,1cyclictest0-21swapper/300:21:473
27319972,3cyclictest19982-21systemd-journal22:13:173
27319972,3cyclictest19982-21systemd-journal20:13:593
27319971,4cyclictest19982-21systemd-journal23:41:453
27319970,6cyclictest24516-21awk22:55:013
27279975,1cyclictest30960-21apt-get23:20:122
27279974,2cyclictest508-21dbus-daemon22:36:412
27279973,3cyclictest508-21dbus-daemon22:58:222
27279973,3cyclictest19116-21gdbus22:10:012
27279973,3cyclictest13285-21smart_sda22:25:202
27279973,3cyclictest0-21swapper/223:59:582
27279973,1cyclictest0-21swapper/222:12:462
27279973,1cyclictest0-21swapper/221:50:332
27279973,1cyclictest0-21swapper/200:07:482
27279972,3cyclictest19982-21systemd-journal21:16:592
27279972,3cyclictest19982-21systemd-journal20:30:012
27279972,3cyclictest19982-21systemd-journal20:10:012
27279971,4cyclictest19982-21systemd-journal21:11:332
27239974,2cyclictest508-21dbus-daemon21:26:101
27239973,3cyclictest508-21dbus-daemon22:21:401
27239973,3cyclictest508-21dbus-daemon21:43:171
27239973,3cyclictest508-21dbus-daemon21:30:001
27239973,3cyclictest508-21dbus-daemon19:56:281
27239973,3cyclictest24011-21ntpq21:50:181
27239973,3cyclictest19982-21systemd-journal19:27:341
27239973,3cyclictest17784-21grep19:40:161
27239973,3cyclictest15811-21cron21:25:001
27239972,4cyclictest11736-21in:imuxsock20:59:021
27239972,3cyclictest19982-21systemd-journal23:00:021
27239972,3cyclictest19982-21systemd-journal22:42:241
27239972,3cyclictest19982-21systemd-journal22:42:241
27239970,7cyclictest8953-1kworker/u9:100:12:321
27199974,2cyclictest508-21dbus-daemon21:55:230
27199974,2cyclictest4681-21sshd19:12:340
27199973,3cyclictest9482-21awk21:40:240
27199973,3cyclictest7661-21lldpd00:32:290
27199973,3cyclictest508-21dbus-daemon22:12:290
27199973,3cyclictest30654-21snmpd23:27:240
27199973,3cyclictest30654-21snmpd19:58:120
27199973,3cyclictest19982-21systemd-journal23:15:280
27199973,3cyclictest19982-21systemd-journal19:35:000
27199973,3cyclictest19982-21systemd-journal00:21:230
27199973,3cyclictest1529-21cat21:35:190
27199973,3cyclictest0-21swapper/021:53:480
27199973,3cyclictest0-21swapper/000:19:420
27199973,2cyclictest19982-21systemd-journal22:22:300
27199973,1cyclictest0-21swapper/023:23:050
27199972,4cyclictest30654-21snmpd23:32:100
27199972,3cyclictest7661-21lldpd20:48:340
27199972,3cyclictest19982-21systemd-journal20:44:260
27199972,2cyclictest19982-21systemd-journal21:13:020
27199971,3cyclictest3804-21perf22:20:010
27199971,3cyclictest25387-21rm22:33:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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