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2025-12-10 - 07:47
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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 Wed Dec 10, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123402309281,17sleep20-21swapper/219:08:132
123262279214,22sleep30-21swapper/319:08:023
123382268235,21sleep00-21swapper/019:08:110
124652263229,23sleep10-21swapper/119:09:491
294702630,0sleep30-21swapper/321:48:473
293872610,0sleep20-21swapper/200:17:452
84022590,0sleep00-21swapper/022:18:110
44102590,0sleep10-21swapper/123:19:301
118642560,0sleep30-21swapper/300:28:593
213352550,0sleep20-21swapper/223:30:042
17652550,0sleep30-21swapper/300:20:313
301812540,0sleep30-21swapper/322:32:153
53742530,0sleep20-21swapper/222:37:352
302402170,0sleep10-21swapper/100:18:321
242862170,0sleep00-21swapper/000:14:390
150572170,0sleep00-21swapper/022:00:210
228222160,0sleep30-21swapper/300:36:563
131212160,0sleep00-21swapper/021:37:410
321172140,0sleep10-21swapper/100:20:011
210522130,0sleep30-21swapper/319:25:153
47602120,0sleep10-21swapper/121:54:011
170222110,1sleep10-21swapper/119:15:201
54772100,0chrt0-21swapper/300:00:163
1261799106,3cyclictest15774-21apt-get21:40:031
1261799106,3cyclictest13237-21sh23:45:021
1261799103,5cyclictest0-21swapper/100:00:121
27225290,0sleep20-21swapper/223:12:422
126309994,3cyclictest508-21dbus-daemon19:11:043
126219996,2cyclictest29512-21tr23:55:152
126179995,3cyclictest3923-21apt-get20:00:021
126179995,3cyclictest19982-21systemd-journal23:29:191
126179995,3cyclictest19982-21systemd-journal23:29:191
126179994,3cyclictest19982-21systemd-journal20:39:061
126179993,4cyclictest22-21ksoftirqd/121:23:021
126179992,4cyclictest0-21swapper/122:53:001
126179990,1cyclictest29741-11brltty23:01:471
126149994,3cyclictest19982-21systemd-journal23:23:040
8994280,0sleep30-21swapper/321:56:113
126309986,1cyclictest508-21dbus-daemon21:37:053
126309983,3cyclictest19982-21systemd-journal23:27:283
126309983,3cyclictest19982-21systemd-journal23:27:283
126309983,3cyclictest19982-21systemd-journal23:17:263
126219984,3cyclictest508-21dbus-daemon21:00:202
126219983,3cyclictest7661-21lldpd22:42:232
126219983,3cyclictest19982-21systemd-journal22:30:052
126219982,3cyclictest3382-21munin-plugin-st20:00:012
126219980,3cyclictest19982-21systemd-journal21:30:002
126179984,2cyclictest19982-21systemd-journal20:45:001
126179983,3cyclictest502-21systemd-logind23:14:181
126179983,3cyclictest19982-21systemd-journal20:58:171
126179982,4cyclictest22-21ksoftirqd/123:22:471
126179982,4cyclictest22-21ksoftirqd/123:08:171
126179982,4cyclictest0-21swapper/122:07:141
126179982,4cyclictest0-21swapper/121:10:271
126179982,4cyclictest0-21swapper/100:29:141
126179982,4cyclictest0-21swapper/100:11:331
126179982,3cyclictest22-21ksoftirqd/122:16:031
126179982,3cyclictest0-21swapper/122:43:401
126179982,3cyclictest0-21swapper/100:35:241
126179981,6cyclictest22-21ksoftirqd/121:27:321
126179981,5cyclictest0-21swapper/122:11:221
126179981,4cyclictest22-21ksoftirqd/122:21:271
126179980,2cyclictest8700-21apt-get21:35:131
126149984,3cyclictest508-21dbus-daemon20:32:000
126149984,3cyclictest30654-21snmpd22:28:120
126149984,3cyclictest19982-21systemd-journal21:34:400
126149984,3cyclictest19982-21systemd-journal21:24:400
126149984,2cyclictest19982-21systemd-journal23:39:450
126149983,3cyclictest19982-21systemd-journal20:16:470
7065270,0sleep20-21swapper/223:40:332
31054270,0sleep20-21swapper/222:11:082
13543270,4sleep228-21ksoftirqd/220:20:162
126309975,1cyclictest13056-21expr20:20:133
126309973,3cyclictest508-21dbus-daemon20:31:103
126309973,3cyclictest32011-21cron22:55:013
126309973,3cyclictest25305-21sed20:45:213
126309973,3cyclictest21340-21sshd00:11:393
126309973,3cyclictest1302-21fschecks_count21:05:143
126309973,3cyclictest0-21swapper/323:02:103
126309973,1cyclictest0-21swapper/322:26:423
126309973,1cyclictest0-21swapper/321:15:283
126309972,3cyclictest7661-21lldpd19:23:463
126309970,4cyclictest7215-21seq22:17:073
126219973,3cyclictest30654-21snmpd21:52:562
126219973,3cyclictest19982-21systemd-journal00:36:542
126219973,3cyclictest19982-21systemd-journal00:20:382
126219973,3cyclictest0-21swapper/223:24:542
126219973,1cyclictest0-21swapper/222:02:232
126219973,1cyclictest0-21swapper/200:07:202
126219972,4cyclictest28-21ksoftirqd/219:51:432
126219972,3cyclictest7661-21lldpd21:05:202
126219972,3cyclictest508-21dbus-daemon20:43:412
126219972,3cyclictest19982-21systemd-journal19:43:372
126219972,1cyclictest0-21swapper/221:14:072
126219971,3cyclictest20187-21grep19:25:012
126219970,2cyclictest23433-21ssh00:13:472
126219970,2cyclictest2207-21ssh23:37:592
126179975,2cyclictest891-21apt-get21:05:121
126179973,3cyclictest24641-21irqstats21:45:161
126179973,3cyclictest22236-21cat23:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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