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2025-11-23 - 05:18
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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 23, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
173982287252,23sleep10-21swapper/119:08:241
174202278227,39sleep30-21swapper/319:08:433
173972263231,20sleep00-21swapper/019:08:230
173592260226,22sleep20-21swapper/219:07:532
278402640,0sleep20-21swapper/222:54:132
147822610,0sleep30-21swapper/323:07:233
159382600,1sleep30-21swapper/323:30:183
266512590,0sleep00-21swapper/019:25:200
274712580,0sleep30-21swapper/322:53:503
26372550,0sleep20-21swapper/223:44:262
92232540,0sleep00-21swapper/021:10:190
94552230,0sleep20-21swapper/221:10:212
117922230,0sleep10-21swapper/121:57:221
327572210,1sleep30-21swapper/300:30:163
52192160,0sleep10-21swapper/100:34:421
193742160,0sleep10-21swapper/120:22:111
153522140,0sleep00-21swapper/021:15:150
135162120,0sleep00-21swapper/022:43:540
1764099103,2cyclictest26756-21cat00:25:203
1764099102,2cyclictest13396-21tr00:15:183
1764099100,3cyclictest19982-21systemd-journal23:17:503
1764099100,3cyclictest19982-21systemd-journal19:47:433
1763299105,3cyclictest19982-21systemd-journal20:17:371
176409994,1cyclictest11326-21diskstats20:05:153
176409993,1cyclictest0-21swapper/300:35:453
176409992,2cyclictest26223-21rm23:37:413
176409990,4cyclictest24783-21perf23:15:003
176409990,3cyclictest24571-40systemctl00:00:013
176409990,3cyclictest19982-21systemd-journal23:20:203
176409990,3cyclictest19982-21systemd-journal21:43:343
176409990,3cyclictest19982-21systemd-journal21:17:003
176409990,3cyclictest19982-21systemd-journal19:57:103
176369994,4cyclictest19982-21systemd-journal00:00:232
176369994,3cyclictest19982-21systemd-journal19:59:392
176329994,3cyclictest19982-21systemd-journal23:59:081
176289993,3cyclictest21931-21cron22:05:020
176409984,3cyclictest19982-21systemd-journal21:55:023
176409983,3cyclictest19982-21systemd-journal20:00:043
176409982,2cyclictest13259-21rm23:29:183
176409982,1cyclictest0-21swapper/322:40:173
176409980,7cyclictest31568-21ssh22:10:343
176409980,2cyclictest11186-21ssh21:35:053
176369984,2cyclictest19982-21systemd-journal23:11:352
176369982,3cyclictest19827-21perf19:15:002
176329984,3cyclictest19982-21systemd-journal23:03:141
176329984,3cyclictest19982-21systemd-journal19:52:341
176329982,3cyclictest2832-21dump-pmu-power21:00:001
176289986,2cyclictest12-21ksoftirqd/022:25:010
176289984,3cyclictest19982-21systemd-journal22:59:550
176289983,3cyclictest19982-21systemd-journal21:53:080
176289983,3cyclictest19982-21systemd-journal21:03:040
176289983,3cyclictest19982-21systemd-journal20:48:530
176289983,3cyclictest19982-21systemd-journal19:40:030
176289983,3cyclictest19982-21systemd-journal00:25:000
12155280,0sleep10-21swapper/121:35:181
6870270,0sleep10-21swapper/100:10:201
28391270,0sleep10-21swapper/123:16:431
176409975,1cyclictest0-21swapper/300:08:483
176409974,2cyclictest508-21dbus-daemon19:27:323
176409974,2cyclictest508-21dbus-daemon19:20:023
176409974,2cyclictest19982-21systemd-journal21:59:243
176409973,3cyclictest6406-21ntpq00:10:173
176409973,3cyclictest30654-21snmpd21:09:463
176409973,3cyclictest28564-21basename20:45:013
176409973,3cyclictest19982-21systemd-journal23:02:533
176409973,3cyclictest19982-21systemd-journal22:46:493
176409973,3cyclictest19982-21systemd-journal21:22:393
176409973,3cyclictest18614-21ntpq20:20:193
176409973,3cyclictest0-21swapper/323:57:493
176409972,3cyclictest7661-21lldpd21:12:403
176409972,2cyclictest3012-21sh22:59:313
176409970,7cyclictest0-21swapper/322:02:593
176409970,3cyclictest25835-21cat22:30:013
176409970,3cyclictest11276-21latency_hist22:20:013
176369974,2cyclictest19982-21systemd-journal20:05:302
176369974,2cyclictest11736-21in:imuxsock21:58:092
176369974,2cyclictest11736-21in:imuxsock21:53:082
176369973,3cyclictest508-21dbus-daemon22:59:542
176369973,3cyclictest508-21dbus-daemon21:26:522
176369973,3cyclictest508-21dbus-daemon21:23:302
176369973,3cyclictest3726-21sshd19:47:132
176369973,3cyclictest30654-21snmpd23:09:022
176369973,3cyclictest30654-21snmpd22:30:322
176369973,3cyclictest1-21systemd00:20:502
176369973,3cyclictest0-21swapper/222:15:442
176369973,1cyclictest0-21swapper/223:53:162
176369972,3cyclictest19982-21systemd-journal00:08:192
176369971,4cyclictest18173-21munin-run21:40:012
176369970,7cyclictest0-21swapper/221:40:182
176369970,3cyclictest31966-21/usr/sbin/munin00:30:212
176329975,1cyclictest1229-21ssh23:43:061
176329974,2cyclictest508-21dbus-daemon23:54:581
176329974,2cyclictest11738-21rs:main1
176329973,3cyclictest508-21dbus-daemon19:36:431
176329973,3cyclictest508-21dbus-daemon00:27:061
176329973,3cyclictest25544-21smart_sda20:35:201
176329973,3cyclictest19982-21systemd-journal23:07:471
176329973,3cyclictest19982-21systemd-journal22:24:511
176329973,3cyclictest19982-21systemd-journal20:08:001
176329973,3cyclictest19982-21systemd-journal19:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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