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2025-11-26 - 23:12
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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 Nov 26, 2025 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220472328296,20sleep20-21swapper/207:09:592
218862282221,48sleep30-21swapper/307:08:153
217732264232,20sleep00-21swapper/007:06:470
218592261215,35sleep10-21swapper/107:07:521
292772620,0sleep10-21swapper/109:51:261
292772620,0sleep10-21swapper/109:51:261
172992600,0sleep30-21swapper/309:13:353
88732590,0sleep20-21swapper/209:00:132
301392570,0sleep30-21swapper/308:35:153
110762570,0sleep20-21swapper/209:05:132
204932560,0sleep30-21swapper/311:03:043
98942540,0sleep00-21swapper/009:00:190
205422190,0sleep30-21swapper/310:11:503
217062160,0sleep20-21swapper/211:04:312
38822150,0sleep10-21swapper/112:29:111
310942150,0sleep20-21swapper/210:45:212
265782130,0sleep30-21swapper/310:16:513
286502120,0sleep30-21swapper/310:44:213
166502100,0sleep10-21swapper/109:40:291
221569996,2cyclictest28-21ksoftirqd/208:35:002
221569994,3cyclictest19982-21systemd-journal11:38:062
221569992,4cyclictest26197-21idleruntime-cro09:50:002
221519996,2cyclictest30654-21snmpd11:45:021
221489994,3cyclictest19982-21systemd-journal12:30:160
7033280,1sleep20-21swapper/212:08:422
417280,0sleep00-21swapper/009:55:140
221609984,3cyclictest508-21dbus-daemon09:39:143
221609984,3cyclictest508-21dbus-daemon07:11:063
221609983,3cyclictest19982-21systemd-journal12:14:443
221609983,3cyclictest19982-21systemd-journal11:51:483
221609983,3cyclictest19982-21systemd-journal09:00:003
221609980,7cyclictest11531-21ntp_states09:05:153
221569984,2cyclictest19982-21systemd-journal08:53:442
221569983,3cyclictest19982-21systemd-journal07:12:492
221519986,1cyclictest22-21ksoftirqd/108:55:001
221519983,3cyclictest19982-21systemd-journal08:29:081
221519983,3cyclictest19982-21systemd-journal07:43:131
221489984,3cyclictest508-21dbus-daemon09:05:010
221609974,2cyclictest30654-21snmpd10:52:513
221609973,3cyclictest508-21dbus-daemon12:01:543
221609973,3cyclictest1-21systemd10:55:343
221609973,3cyclictest0-21swapper/312:20:393
221609973,2cyclictest19982-21systemd-journal08:24:113
221609973,1cyclictest0-21swapper/311:58:043
221609973,1cyclictest0-21swapper/311:44:303
221609973,1cyclictest0-21swapper/311:35:373
221609972,3cyclictest19982-21systemd-journal12:19:553
221609972,3cyclictest19982-21systemd-journal10:39:333
221609972,3cyclictest19982-21systemd-journal08:51:143
221609971,2cyclictest19982-21systemd-journal12:39:513
221569975,1cyclictest9496-21latency_hist10:30:002
221569974,2cyclictest508-21dbus-daemon08:07:262
221569974,2cyclictest508-21dbus-daemon07:34:292
221569973,3cyclictest7257-21wc10:00:192
221569973,3cyclictest508-21dbus-daemon12:30:152
221569973,3cyclictest19982-21systemd-journal12:27:202
221569973,1cyclictest0-21swapper/212:11:312
221569973,1cyclictest0-21swapper/211:18:512
221569973,1cyclictest0-21swapper/211:06:232
221569973,1cyclictest0-21swapper/210:34:362
221569972,3cyclictest19982-21systemd-journal12:24:522
221569972,3cyclictest19982-21systemd-journal11:24:212
221569972,3cyclictest19982-21systemd-journal10:39:302
221569970,4cyclictest508-21dbus-daemon10:45:012
221569970,2cyclictest5738-21taskset07:41:192
221519974,2cyclictest508-21dbus-daemon11:08:551
221519974,2cyclictest508-21dbus-daemon07:37:481
221519974,2cyclictest4530-21head09:30:141
221519974,2cyclictest19982-21systemd-journal12:33:361
221519974,2cyclictest11736-21in:imuxsock09:55:301
221519973,3cyclictest508-21dbus-daemon10:37:381
221519973,3cyclictest30654-21snmpd11:22:581
221519973,3cyclictest0-21swapper/110:05:141
221519973,2cyclictest508-21dbus-daemon09:50:011
221519973,1cyclictest0-21swapper/111:58:571
221519973,1cyclictest0-21swapper/111:44:361
221519971,5cyclictest0-21swapper/107:30:011
221519971,2cyclictest7661-21lldpd12:19:021
221519970,4cyclictest11688-21dump-pmu-power10:05:021
221519970,2cyclictest7661-21lldpd10:35:011
221519970,2cyclictest28362-21ssh12:23:221
221489975,1cyclictest1994-21ssh12:27:250
221489974,2cyclictest508-21dbus-daemon11:41:280
221489974,2cyclictest11736-21in:imuxsock07:40:190
221489973,3cyclictest9828-21df11:20:130
221489973,3cyclictest5169-21awk10:50:200
221489973,3cyclictest508-21dbus-daemon10:24:420
221489973,3cyclictest508-21dbus-daemon09:25:270
221489973,3cyclictest30220-21sed09:24:590
221489973,3cyclictest29741-11brltty10:05:300
221489973,3cyclictest19982-21systemd-journal12:09:450
221489973,3cyclictest19982-21systemd-journal11:08:540
221489973,3cyclictest19982-21systemd-journal07:11:490
221489973,3cyclictest0-21swapper/011:35:440
221489973,3cyclictest0-21swapper/010:49:050
221489973,3cyclictest0-21swapper/010:28:440
221489973,2cyclictest19982-21systemd-journal10:34:560
221489973,2cyclictest19982-21systemd-journal09:49:140
221489973,1cyclictest13066-21turbostat08:00:010
221489973,1cyclictest0-21swapper/010:04:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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