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2025-12-11 - 19:49
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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 Thu Dec 11, 2025 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35842313284,18sleep20-21swapper/207:08:382
33392282250,20sleep10-21swapper/107:05:281
34772276245,19sleep30-21swapper/307:07:153
35202256221,23sleep00-21swapper/007:07:470
41212660,0sleep20-21swapper/209:17:232
32152610,0sleep20-21swapper/210:59:352
135402610,0sleep113542-21grep09:25:151
239342590,0sleep10-21swapper/112:06:211
253332580,0sleep10-21swapper/111:42:141
4932540,0sleep30-21swapper/311:48:253
192982390,0sleep10-21swapper/110:45:481
250222190,0sleep00-21swapper/010:25:240
47032170,0sleep30-21swapper/307:10:153
57192150,0sleep10-21swapper/109:19:061
151542150,0sleep10-21swapper/109:53:101
287442130,0sleep10-21swapper/112:32:301
287472120,0sleep30-21swapper/309:10:473
380799115,3cyclictest10721-21turbostat08:35:002
309202100,0sleep00-21swapper/011:20:500
38129998,1cyclictest34-21ksoftirqd/308:00:003
38079998,1cyclictest28-21ksoftirqd/210:40:012
38039994,3cyclictest19982-21systemd-journal08:40:351
37999996,2cyclictest11151-21dump-pmu-power07:25:010
37999990,8cyclictest26761-21sshd11:18:220
38129984,3cyclictest508-21dbus-daemon12:15:003
38129983,3cyclictest7661-21lldpd09:43:433
38129983,3cyclictest19982-21systemd-journal12:37:083
38129983,3cyclictest19982-21systemd-journal12:25:583
38129983,3cyclictest19982-21systemd-journal10:29:233
38129983,3cyclictest19982-21systemd-journal09:15:013
38129981,4cyclictest17675-21fschecks_count10:45:153
38079985,2cyclictest508-21dbus-daemon08:41:252
38079984,3cyclictest508-21dbus-daemon07:27:342
38079980,7cyclictest17012chrt10:07:212
38039987,1cyclictest22-21ksoftirqd/111:00:011
38039984,3cyclictest508-21dbus-daemon11:56:401
38039984,3cyclictest508-21dbus-daemon11:32:281
37999984,3cyclictest19982-21systemd-journal12:18:230
37999984,2cyclictest19982-21systemd-journal07:50:150
29963280,0sleep10-21swapper/111:45:221
8930270,0sleep10-21swapper/112:20:141
38129974,2cyclictest29593-21cat11:20:163
38129974,2cyclictest23469-21sh12:05:513
38129974,2cyclictest11736-21in:imuxsock09:21:273
38129973,3cyclictest5184-21ntpq10:35:183
38129973,3cyclictest508-21dbus-daemon08:51:003
38129973,3cyclictest30654-21snmpd08:58:583
38129973,3cyclictest19982-21systemd-journal12:17:323
38129973,3cyclictest19982-21systemd-journal10:19:233
38129973,3cyclictest19982-21systemd-journal09:49:513
38129973,3cyclictest19982-21systemd-journal07:50:353
38129973,3cyclictest19982-21systemd-journal07:29:393
38129973,1cyclictest0-21swapper/312:01:593
38129972,4cyclictest0-21swapper/311:19:583
38129972,3cyclictest19982-21systemd-journal11:39:093
38129971,4cyclictest19982-21systemd-journal10:20:503
38129970,6cyclictest3343-21timerandwakeup08:15:213
38129970,3cyclictest30462-21sendmail09:40:023
38129970,1cyclictest502-21systemd-logind07:32:103
38079973,3cyclictest30654-21snmpd08:47:402
38079973,3cyclictest29741-11brltty08:06:222
38079973,3cyclictest23920-21ntpq07:50:182
38079973,3cyclictest19982-21systemd-journal11:53:202
38079973,3cyclictest19982-21systemd-journal11:20:012
38079973,3cyclictest19982-21systemd-journal09:40:532
38079973,3cyclictest19116-21gdbus12:30:002
38079973,1cyclictest0-21swapper/212:23:502
38079973,1cyclictest0-21swapper/211:55:482
38079973,1cyclictest0-21swapper/211:48:142
38079973,1cyclictest0-21swapper/211:23:342
38079973,1cyclictest0-21swapper/211:04:132
38079973,1cyclictest0-21swapper/210:03:582
38079972,3cyclictest19982-21systemd-journal08:25:342
38079972,1cyclictest0-21swapper/209:40:022
38079971,4cyclictest19982-21systemd-journal11:44:342
38039974,2cyclictest23631-21/usr/sbin/munin10:00:151
38039974,2cyclictest22-21ksoftirqd/107:45:011
38039974,2cyclictest19982-21systemd-journal07:54:401
38039974,2cyclictest11736-21in:imuxsock07:38:501
38039973,3cyclictest30654-21snmpd09:12:251
38039973,3cyclictest19982-21systemd-journal11:11:371
38039973,3cyclictest19982-21systemd-journal07:35:011
38039973,3cyclictest0-21swapper/112:28:361
38039973,3cyclictest0-21swapper/111:53:291
38039973,2cyclictest19982-21systemd-journal11:22:281
38039973,1cyclictest0-21swapper/110:36:271
38039972,3cyclictest19982-21systemd-journal10:52:011
38039970,6cyclictest1520-21taskset10:33:021
38039970,3cyclictest294621latency_hist10:30:011
37999976,1cyclictest29741-11brltty10:31:590
37999974,2cyclictest19982-21systemd-journal07:33:230
37999973,3cyclictest508-21dbus-daemon10:42:500
37999973,3cyclictest508-21dbus-daemon09:53:360
37999973,3cyclictest508-21dbus-daemon09:08:070
37999973,3cyclictest4178-21cstates11:00:130
37999973,3cyclictest30654-21snmpd10:02:330
37999973,3cyclictest19982-21systemd-journal08:41:490
37999973,3cyclictest19982-21systemd-journal07:55:560
37999973,3cyclictest0-21swapper/012:35:090
37999973,3cyclictest0-21swapper/011:51:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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