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2026-09-02 - 07:25
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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 Sep 02, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175322321294,18sleep10-21swapper/119:07:511
174912279223,19sleep30-21swapper/319:07:213
174072279250,19sleep20-21swapper/219:06:162
173672273244,19sleep00-21swapper/019:05:530
162752770,0sleep20-21swapper/221:15:012
162872600,0sleep20-21swapper/222:49:592
185342580,0sleep00-21swapper/022:31:390
42672570,0sleep00-21swapper/022:05:010
171102560,0sleep30-21swapper/323:09:023
68022550,0sleep10-21swapper/100:37:331
93752540,0sleep20-21swapper/223:41:412
268032530,0sleep30-21swapper/322:17:373
243232510,0sleep20-21swapper/222:54:362
311652220,0sleep20-21swapper/221:42:072
82772190,0sleep00-21swapper/000:19:390
231152190,1sleep10-21swapper/122:35:011
72172170,0sleep30-21swapper/323:21:363
269622140,0sleep30-21swapper/321:59:113
227592140,0sleep1211rcuc/123:11:411
292422130,0sleep20-21swapper/222:19:272
195582120,0sleep00-21swapper/021:35:170
12302120,0sleep10-21swapper/121:25:051
222302110,0chrt0-21swapper/222:34:262
178119995,3cyclictest15221-21snmpd22:01:433
178119987,1cyclictest34-21ksoftirqd/321:35:003
178119986,1cyclictest6884-21rm00:18:353
178009983,3cyclictest650-21lldpd21:15:210
178119976,1cyclictest15008-21apt-get22:30:133
178119974,2cyclictest504-21dbus-daemon21:12:183
178119973,3cyclictest9544-21cat00:20:113
178119973,3cyclictest275-21systemd-journal21:49:303
178119973,3cyclictest26755-21ntpq22:55:173
178119973,3cyclictest21216-21ntpq20:25:173
178119973,1cyclictest0-21swapper/321:28:223
178119972,3cyclictest275-21systemd-journal23:28:563
178119972,3cyclictest275-21systemd-journal22:35:513
178119970,5cyclictest275-21systemd-journal22:06:403
178119970,3cyclictest27742-21ssh23:15:133
178079974,2cyclictest15221-21snmpd21:18:582
178079973,3cyclictest504-21dbus-daemon21:30:012
178079973,3cyclictest275-21systemd-journal23:22:422
178079973,3cyclictest275-21systemd-journal22:36:412
178079973,3cyclictest275-21systemd-journal22:26:422
178079973,3cyclictest15221-21snmpd23:56:042
178079973,3cyclictest15221-21snmpd21:20:082
178079973,3cyclictest15221-21snmpd20:46:192
178079972,4cyclictest275-21systemd-journal23:31:322
178059973,3cyclictest15221-21snmpd23:09:301
178059972,3cyclictest6005-21turbostat22:25:011
178059970,6cyclictest15560-21munin-run20:15:001
178059970,1cyclictest5324-21perf23:40:001
178009975,2cyclictest12-21ksoftirqd/000:00:000
178009974,2cyclictest3267-21cron23:20:010
178009974,2cyclictest27289-21sshd19:26:080
178009973,3cyclictest275-21systemd-journal21:15:010
178009973,3cyclictest275-21systemd-journal20:55:000
178009973,3cyclictest10401-21apt-get23:05:120
178009973,1cyclictest0-21swapper/021:59:400
178119966,0cyclictest0-21swapper/320:00:203
178119963,2cyclictest7397-21ssh00:00:013
178119963,2cyclictest504-21dbus-daemon19:27:593
178119963,2cyclictest34-21ksoftirqd/323:30:143
178119963,2cyclictest34-21ksoftirqd/322:20:133
178119963,2cyclictest30859-21taskset20:46:323
178119963,2cyclictest23695-21rm23:12:223
178119963,2cyclictest17889-21ssh22:50:183
178119962,3cyclictest380-21interrupts22:40:153
178119962,3cyclictest31862-21sshd23:35:413
178119962,3cyclictest275-21systemd-journal20:51:023
178119962,3cyclictest19396-21ntpq21:35:153
178119962,3cyclictest17721-21timerandwakeup00:05:203
178119962,3cyclictest15221-21snmpd23:52:223
178119962,3cyclictest15221-21snmpd22:26:253
178119962,3cyclictest15221-21snmpd22:12:433
178119962,3cyclictest15221-21snmpd21:50:073
178119962,3cyclictest15221-21snmpd21:00:043
178119962,3cyclictest15221-21snmpd20:55:223
178119962,3cyclictest15221-21snmpd19:48:543
178119962,3cyclictest15221-21snmpd19:10:143
178119962,3cyclictest12225-21cat20:05:153
178119962,1cyclictest0-21swapper/300:25:043
178119962,1cyclictest0-21swapper/300:13:403
178119960,6cyclictest0-21swapper/323:56:063
178119960,6cyclictest0-21swapper/323:43:353
178119960,6cyclictest0-21swapper/322:45:443
178119960,5cyclictest15045-21hwlatdetect23:45:153
178119960,0cyclictest0-21swapper/300:38:553
178079966,0cyclictest0-21swapper/200:15:262
178079963,2cyclictest504-21dbus-daemon23:06:262
178079963,2cyclictest504-21dbus-daemon00:25:002
178079963,2cyclictest501-21in:imuxsock19:40:012
178079963,2cyclictest491-21systemd-logind21:35:172
178079963,2cyclictest3667-21ssh22:23:152
178079963,2cyclictest27329-21sshd19:26:322
178079963,2cyclictest24973-21grep00:10:132
178079963,2cyclictest15221-21snmpd22:55:292
178079963,2cyclictest15221-21snmpd20:50:012
178079963,2cyclictest15221-21snmpd19:41:592
178079963,2cyclictest1078-21sshd22:02:422
178079963,1cyclictest0-21swapper/221:30:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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