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2025-09-14 - 05:04
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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 Sep 14, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68972285224,48sleep20-21swapper/219:08:422
69902281225,43sleep30-21swapper/319:09:553
66772276228,37sleep00-21swapper/019:06:090
66832272240,20sleep10-21swapper/119:06:141
26812710,1sleep22687-21cpuspeed_turbos22:55:132
87982590,0sleep18794-21apt-config23:00:011
177532580,0sleep10-21swapper/121:25:091
231922570,0sleep10-21swapper/100:28:411
323122440,0sleep332311-21ssh22:27:203
132942190,0sleep30-21swapper/321:20:483
196092180,0sleep20-21swapper/221:51:142
116202160,0sleep30-21swapper/321:45:193
141292150,0sleep20-21swapper/221:47:012
137572140,0sleep00-21swapper/022:38:180
71149995,3cyclictest508-21dbus-daemon00:05:112
71169985,2cyclictest508-21dbus-daemon20:20:013
71169985,2cyclictest17444-21/usr/sbin/munin22:40:223
71169983,3cyclictest19982-21systemd-journal21:12:453
71169983,3cyclictest19982-21systemd-journal00:38:093
71149985,2cyclictest30654-21snmpd00:24:372
71149984,3cyclictest508-21dbus-daemon23:50:592
71149984,3cyclictest22806-21basename20:55:002
71149984,3cyclictest19982-21systemd-journal19:57:052
71149982,4cyclictest20579-21perf20:49:592
71149982,3cyclictest9308-21basename19:15:002
71149981,1cyclictest323112ssh22:27:202
71099983,4cyclictest0-21swapper/100:39:591
71099983,3cyclictest19982-21systemd-journal23:25:321
71099983,3cyclictest19982-21systemd-journal23:22:121
71099983,3cyclictest19982-21systemd-journal22:46:451
71059984,3cyclictest19982-21systemd-journal21:40:010
71059983,3cyclictest7661-21lldpd22:30:120
71059983,3cyclictest19982-21systemd-journal20:28:130
71059983,3cyclictest19982-21systemd-journal19:20:130
71059982,3cyclictest3725-21munin-run21:14:590
71059982,3cyclictest27285-21perf21:04:590
3932280,0sleep23936-21fschecks_time22:05:162
23759280,0sleep20-21swapper/222:45:192
71169974,2cyclictest508-21dbus-daemon21:20:013
71169974,2cyclictest19982-21systemd-journal20:22:313
71169973,3cyclictest508-21dbus-daemon23:46:493
71169973,3cyclictest30654-21snmpd22:59:253
71169973,3cyclictest30654-21snmpd22:14:553
71169973,3cyclictest24145-21grep19:45:143
71169973,3cyclictest24015-21ntpq20:55:193
71169973,3cyclictest21430-21apt-get23:35:133
71169973,3cyclictest19982-21systemd-journal23:41:333
71169973,3cyclictest19982-21systemd-journal22:37:513
71169973,3cyclictest19982-21systemd-journal21:09:593
71169973,3cyclictest12090-21sshd23:52:493
71169973,1cyclictest0-21swapper/321:57:043
71169973,1cyclictest0-21swapper/321:52:253
71169973,1cyclictest0-21swapper/300:10:583
71169973,1cyclictest0-21swapper/300:01:133
71169972,4cyclictest0-21swapper/300:27:283
71169972,3cyclictest19982-21systemd-journal23:04:413
71169972,3cyclictest19982-21systemd-journal22:18:233
71169970,1cyclictest30608-21ssh22:51:003
71149976,1cyclictest7136-21apt-get20:20:122
71149974,2cyclictest29741-11brltty22:10:282
71149973,3cyclictest508-21dbus-daemon22:55:012
71149973,3cyclictest30654-21snmpd22:24:552
71149973,3cyclictest19982-21systemd-journal19:30:012
71149973,1cyclictest0-21swapper/223:24:582
71149973,1cyclictest0-21swapper/221:20:312
71149973,1cyclictest0-21swapper/221:11:302
71149973,1cyclictest0-21swapper/200:02:592
71149972,3cyclictest19982-21systemd-journal22:00:272
71149972,3cyclictest19982-21systemd-journal20:32:242
71099976,1cyclictest22-21ksoftirqd/122:40:001
71099974,2cyclictest19854-21sshd22:42:561
71099973,3cyclictest508-21dbus-daemon22:10:281
71099973,3cyclictest4106-21sensors_temp22:30:211
71099973,3cyclictest30654-21snmpd20:30:171
71099973,3cyclictest29741-11brltty21:05:471
71099973,3cyclictest29741-11brltty20:02:471
71099973,3cyclictest19982-21systemd-journal22:07:581
71099973,3cyclictest19982-21systemd-journal21:59:121
71099973,3cyclictest19982-21systemd-journal19:41:301
71099973,3cyclictest11644-21diskstats21:20:161
71099973,2cyclictest19982-21systemd-journal20:15:011
71099973,1cyclictest0-21swapper/122:01:181
71099973,1cyclictest0-21swapper/121:50:141
71099973,1cyclictest0-21swapper/121:40:431
71099972,3cyclictest19982-21systemd-journal23:49:201
71099972,3cyclictest19982-21systemd-journal00:21:331
71099970,6cyclictest8510-21kworker/1:121:34:581
71059974,2cyclictest508-21dbus-daemon21:27:020
71059974,2cyclictest508-21dbus-daemon19:45:180
71059974,2cyclictest19982-21systemd-journal00:13:320
71059974,2cyclictest12-21ksoftirqd/020:30:120
71059974,1cyclictest19982-21systemd-journal23:46:500
71059973,3cyclictest7661-21lldpd23:02:570
71059973,3cyclictest5306-21cat21:40:170
71059973,3cyclictest508-21dbus-daemon19:40:010
71059973,3cyclictest30654-21snmpd00:36:230
71059973,3cyclictest19982-21systemd-journal20:05:010
71059973,3cyclictest18874-21basename19:35:000
71059973,3cyclictest0-21swapper/023:23:500
71059973,3cyclictest0-21swapper/022:49:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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