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2025-11-28 - 08:50
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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 Fri Nov 28, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258432292221,20sleep20-21swapper/219:08:382
255862268234,22sleep10-21swapper/119:05:441
256182264233,19sleep30-21swapper/319:06:103
258512258225,21sleep00-21swapper/019:08:440
292112630,0sleep30-21swapper/323:06:523
201472620,0sleep30-21swapper/321:34:003
16692620,1sleep30-21swapper/321:20:513
60172610,4sleep10-21swapper/100:23:061
160902580,0sleep00-21swapper/021:52:400
132622570,1sleep10-21swapper/100:29:351
225882560,0sleep30-21swapper/323:46:243
127922190,0sleep10-21swapper/121:00:191
224172170,0sleep10-21swapper/121:13:411
147202160,0sleep30-21swapper/321:51:273
7432140,0sleep00-21swapper/021:42:150
194002140,0sleep10-21swapper/100:08:241
190642130,0sleep10-21swapper/122:15:361
2605999109,1cyclictest28-21ksoftirqd/222:10:012
2605999109,1cyclictest28-21ksoftirqd/200:19:592
29026290,0sleep10-21swapper/123:06:411
26167290,0sleep00-21swapper/000:13:440
260599994,3cyclictest19982-21systemd-journal20:05:342
6799280,0sleep20-21swapper/219:35:192
27505280,0sleep00-21swapper/022:21:240
260649984,3cyclictest7661-21lldpd22:41:053
260649983,3cyclictest19982-21systemd-journal23:34:353
260649983,3cyclictest19982-21systemd-journal21:15:133
260649983,3cyclictest19982-21systemd-journal20:57:433
260649983,3cyclictest19982-21systemd-journal19:32:113
260599985,2cyclictest8953-1kworker/u9:122:55:012
260599984,3cyclictest19982-21systemd-journal21:34:012
260599984,2cyclictest19982-21systemd-journal20:24:202
260599983,3cyclictest502-21systemd-logind22:44:572
260559983,4cyclictest30654-21snmpd21:16:431
260559983,3cyclictest21636-21awk20:10:001
260559983,3cyclictest19982-21systemd-journal20:56:521
260559983,3cyclictest19982-21systemd-journal19:44:431
260509984,3cyclictest508-21dbus-daemon21:15:390
260509983,3cyclictest7661-21lldpd22:12:080
260509983,3cyclictest19982-21systemd-journal22:40:010
260509983,3cyclictest19982-21systemd-journal21:21:050
260509983,3cyclictest19982-21systemd-journal20:27:160
260509983,3cyclictest19982-21systemd-journal20:07:380
260509982,3cyclictest938-21munin-run19:25:010
260509980,7cyclictest21526-21ssh22:17:450
11230280,0chrt0-21swapper/220:55:202
9338270,1sleep2271rcuc/223:37:062
5059270,1sleep20-21swapper/222:28:342
4396270,0sleep10-21swapper/121:45:131
260649975,1cyclictest34-21ksoftirqd/319:50:013
260649974,2cyclictest34-21ksoftirqd/320:20:133
260649973,3cyclictest508-21dbus-daemon00:00:003
260649973,3cyclictest30654-21snmpd19:48:133
260649973,3cyclictest19982-21systemd-journal21:01:033
260649973,3cyclictest19982-21systemd-journal20:16:173
260649973,3cyclictest19982-21systemd-journal20:02:323
260649973,3cyclictest19982-21systemd-journal00:08:223
260649973,3cyclictest1-21systemd19:20:013
260649973,3cyclictest0-21swapper/322:51:493
260649973,1cyclictest0-21swapper/323:53:313
260649973,1cyclictest0-21swapper/323:14:053
260649973,1cyclictest0-21swapper/322:23:583
260649973,1cyclictest0-21swapper/321:14:283
260649973,1cyclictest0-21swapper/300:25:193
260649973,1cyclictest0-21swapper/300:11:443
260649972,4cyclictest11736-21in:imuxsock00:23:213
260649972,3cyclictest19982-21systemd-journal23:38:193
260649972,3cyclictest19982-21systemd-journal22:36:103
260649972,3cyclictest19982-21systemd-journal00:03:183
260649971,3cyclictest19982-21systemd-journal00:35:303
260599976,1cyclictest28-21ksoftirqd/220:05:012
260599973,3cyclictest8390-21cat20:50:182
260599973,3cyclictest25647-21ntpq22:20:172
260599973,3cyclictest19982-21systemd-journal21:02:422
260599973,3cyclictest19982-21systemd-journal20:27:372
260599973,3cyclictest0-21swapper/222:31:422
260599973,1cyclictest0-21swapper/222:47:102
260599973,1cyclictest0-21swapper/222:37:402
260599973,1cyclictest0-21swapper/200:01:512
260599972,3cyclictest19982-21systemd-journal23:23:442
260599972,3cyclictest19982-21systemd-journal23:23:442
260599972,3cyclictest19982-21systemd-journal23:01:132
260559973,3cyclictest30654-21snmpd20:13:191
260559973,3cyclictest19982-21systemd-journal23:44:111
260559973,3cyclictest19982-21systemd-journal20:05:001
260559973,3cyclictest19816-21apt-get23:45:141
260559973,3cyclictest0-21swapper/100:13:151
260559973,1cyclictest0-21swapper/123:54:351
260559973,1cyclictest0-21swapper/121:56:021
260559971,4cyclictest19982-21systemd-journal00:37:101
260559970,7cyclictest0-21swapper/123:00:161
260509974,2cyclictest508-21dbus-daemon23:10:000
260509973,3cyclictest6741-21ntpq23:35:170
260509973,3cyclictest6408-21ntpq20:45:160
260509973,3cyclictest502-21systemd-logind00:30:530
260509973,3cyclictest19982-21systemd-journal20:41:160
260509973,3cyclictest0-21swapper/000:15:080
260509973,1cyclictest0-21swapper/023:29:090
260509973,1cyclictest0-21swapper/022:34:350
260509973,1cyclictest0-21swapper/021:26:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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