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2025-12-09 - 09:18
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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 Tue Dec 09, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314842317288,18sleep20-21swapper/219:08:222
315372282249,21sleep00-21swapper/019:09:050
313072276243,21sleep10-21swapper/119:06:241
314632260225,22sleep30-21swapper/319:08:073
280462630,1sleep00-21swapper/023:05:170
233562630,0sleep10-21swapper/121:33:241
250802610,0sleep10-21swapper/122:40:201
310622580,0sleep20-21swapper/221:38:452
296852580,0sleep20-21swapper/222:00:012
295762580,0sleep10-21swapper/123:50:311
219862550,0sleep30-21swapper/321:10:153
198442550,0sleep10-21swapper/121:52:591
170662540,0sleep00-21swapper/021:29:180
197772520,0sleep00-21swapper/023:44:420
46252180,0sleep20-21swapper/223:33:582
277942180,0sleep30-21swapper/300:12:363
210032180,0sleep10-21swapper/122:15:211
325902170,0sleep30-21swapper/322:01:103
112172170,0sleep30-21swapper/321:25:133
256392160,0sleep30-21swapper/300:35:183
110202150,0sleep00-21swapper/022:53:480
213662130,0sleep30-21swapper/321:09:553
3171099114,2cyclictest23428-21awk20:00:181
3171099113,3cyclictest1482-21ntpq21:40:181
3171099112,2cyclictest19982-21systemd-journal22:35:041
3171099110,3cyclictest19982-21systemd-journal21:29:081
57182100,1sleep10-21swapper/122:05:161
3171099100,3cyclictest19982-21systemd-journal19:30:011
317189994,3cyclictest19982-21systemd-journal22:12:293
317109994,3cyclictest19982-21systemd-journal23:56:501
317109993,2cyclictest30654-21snmpd21:10:381
317109993,2cyclictest14081-21head19:40:151
317109993,1cyclictest26710-21sh00:35:521
317109993,1cyclictest16398-21sh23:20:101
317109992,3cyclictest30654-21snmpd23:29:041
317109992,3cyclictest30654-21snmpd23:29:041
317109992,2cyclictest13116-21awk00:25:191
317109992,1cyclictest0-21swapper/123:42:261
317109992,1cyclictest0-21swapper/121:22:551
317109991,3cyclictest0-21swapper/121:45:441
317109990,4cyclictest0-21swapper/122:33:261
317109990,3cyclictest9091-21ssh23:36:291
317109990,3cyclictest19982-21systemd-journal23:16:221
317109990,3cyclictest19982-21systemd-journal21:56:171
317109990,2cyclictest27928-21/usr/sbin/munin23:05:171
317109990,1cyclictest19982-21systemd-journal00:18:021
24678290,1sleep228-21ksoftirqd/223:25:192
24678290,1sleep228-21ksoftirqd/223:25:182
317189984,3cyclictest32436-21cron21:40:013
317189983,3cyclictest19982-21systemd-journal23:43:293
317189983,3cyclictest19982-21systemd-journal20:32:243
317189983,3cyclictest19982-21systemd-journal20:14:273
317189980,7cyclictest0-21swapper/322:48:413
317149984,3cyclictest19982-21systemd-journal22:50:012
317149983,3cyclictest19982-21systemd-journal19:30:012
317149982,3cyclictest15984-21dump-pmu-power23:20:012
317109984,3cyclictest508-21dbus-daemon00:10:111
317109983,3cyclictest502-21systemd-logind00:01:251
317109983,1cyclictest668-21runrttasks00:20:491
317109983,1cyclictest24453-21turbostat.cron20:09:551
317109983,1cyclictest22733-21sh23:45:471
317109983,1cyclictest18144-21sh00:30:031
317109981,4cyclictest8775-21munin-run23:15:021
317109980,3cyclictest23206-21latency_hist00:10:001
317109980,2cyclictest30317-21sh21:38:051
317109980,1cyclictest13693-21wc22:10:211
317079986,1cyclictest29741-11brltty23:51:240
317079984,3cyclictest508-21dbus-daemon22:28:480
317079983,3cyclictest7661-21lldpd20:32:220
317079983,3cyclictest19982-21systemd-journal23:35:010
317079981,6cyclictest17850-21sort22:35:220
15032280,2sleep315240-21hddtemp_smartct20:55:193
317189975,1cyclictest25369-21grep23:25:213
317189975,1cyclictest25369-21grep23:25:213
317189974,2cyclictest11736-21in:imuxsock19:20:133
317189973,3cyclictest7955-21apt-get20:40:123
317189973,3cyclictest23230-21systemctl22:40:013
317189973,3cyclictest19982-21systemd-journal19:46:543
317189973,3cyclictest1-21systemd22:20:013
317189973,3cyclictest0-21swapper/321:58:123
317189973,1cyclictest0-21swapper/323:52:533
317189973,1cyclictest0-21swapper/322:42:563
317189973,1cyclictest0-21swapper/300:04:313
317189972,3cyclictest19982-21systemd-journal22:52:303
317189972,3cyclictest19982-21systemd-journal22:10:003
317189972,3cyclictest19982-21systemd-journal21:03:413
317189972,3cyclictest19982-21systemd-journal00:00:003
317189972,2cyclictest15045-21ssh21:50:033
317189971,5cyclictest20527-21grep22:15:183
317189970,7cyclictest0-21swapper/323:49:333
317149973,3cyclictest7661-21lldpd20:18:102
317149973,3cyclictest508-21dbus-daemon19:50:012
317149973,3cyclictest29741-11brltty21:32:032
317149973,3cyclictest24734-21ntpq22:40:172
317149973,3cyclictest17098-21hddtemp_smartct23:20:152
317149973,3cyclictest0-21swapper/223:45:022
317149973,3cyclictest0-21swapper/223:01:162
317149973,1cyclictest0-21swapper/223:58:102
317149973,1cyclictest0-21swapper/222:54:262
317149973,1cyclictest0-21swapper/222:14:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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