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2026-08-16 - 04:14
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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 Aug 16, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
244272311288,14sleep20-21swapper/219:05:262
244632301271,19sleep10-21swapper/119:05:531
246112264233,21sleep00-21swapper/019:07:330
245642252220,21sleep30-21swapper/319:06:553
177252620,0sleep30-21swapper/321:50:013
124252620,0sleep20-21swapper/221:27:052
294102610,0sleep20-21swapper/223:13:332
271652600,0sleep20-21swapper/222:52:512
263732600,0sleep10-21swapper/119:10:191
213452600,0sleep00-21swapper/020:10:150
217662570,0sleep00-21swapper/022:50:000
199392570,0sleep00-21swapper/000:24:530
47202560,0sleep20-21swapper/222:58:592
320582550,0sleep10-21swapper/100:31:281
297082550,0sleep20-21swapper/223:51:412
221842550,1sleep122182-21grep20:10:201
325532540,0sleep00-21swapper/021:39:360
183232540,0sleep20-21swapper/221:11:072
140552520,0sleep20-21swapper/200:20:242
215252200,0sleep00-21swapper/022:30:140
23622190,1sleep20-21swapper/223:55:132
102392190,1sleep110240-21latency_hist00:00:011
7532140,0sleep30-21swapper/319:25:143
23872140,0sleep00-21swapper/021:40:160
32762130,0sleep20-21swapper/219:30:162
308692110,0sleep00-21swapper/023:14:390
2491199118,2cyclictest12-21ksoftirqd/023:45:010
240712100,0sleep20-21swapper/222:31:282
249119994,3cyclictest275-21systemd-journal19:15:060
2639280,0sleep30-21swapper/319:30:143
249219987,1cyclictest28-21ksoftirqd/219:15:012
249169986,1cyclictest22-21ksoftirqd/123:44:591
249169984,3cyclictest275-21systemd-journal22:46:081
249119984,3cyclictest275-21systemd-journal22:10:010
249119984,3cyclictest275-21systemd-journal00:20:000
249119981,1cyclictest22124-21apt-get22:50:130
23784280,0sleep10-21swapper/122:31:151
12794280,0sleep00-21swapper/021:46:260
25132270,0sleep10-21swapper/100:27:271
249259976,1cyclictest34-21ksoftirqd/322:50:003
249259976,1cyclictest34-21ksoftirqd/320:00:013
249259975,1cyclictest34-21ksoftirqd/322:00:013
249259974,2cyclictest504-21dbus-daemon21:25:003
249259973,3cyclictest504-21dbus-daemon21:00:003
249259973,3cyclictest30727-21snmpd21:10:163
249259973,3cyclictest275-21systemd-journal22:33:083
249259973,1cyclictest141rcu_preempt00:37:163
249259973,1cyclictest0-21swapper/322:41:563
249259971,5cyclictest17586-21ssh23:45:023
249259970,1cyclictest50850irq/136-enp4s0-21:36:583
249219976,1cyclictest28-21ksoftirqd/221:20:002
249219974,2cyclictest28-21ksoftirqd/222:30:012
249219973,3cyclictest30727-21snmpd00:14:512
249219973,3cyclictest275-21systemd-journal23:41:322
249219973,1cyclictest0-21swapper/223:31:102
249219972,4cyclictest30727-21snmpd22:41:312
249219972,3cyclictest674-21lldpd00:15:022
249219970,4cyclictest24167-21idleruntime-cro23:30:002
249169975,1cyclictest22-21ksoftirqd/100:00:011
249169974,2cyclictest14652-21users21:05:201
249169973,3cyclictest275-21systemd-journal22:37:031
249169973,3cyclictest13777-21ls19:55:141
249169970,6cyclictest9577-21ntpq20:55:151
249169970,1cyclictest22634-21sh21:33:281
249119973,3cyclictest3173-21needreboot23:55:170
249119973,3cyclictest27742-21cat00:10:150
249119973,3cyclictest275-21systemd-journal23:00:000
249119973,3cyclictest275-21systemd-journal22:11:450
249119973,3cyclictest275-21systemd-journal20:03:450
249119973,3cyclictest19084-21ntpq21:50:170
249119973,2cyclictest275-21systemd-journal20:19:250
249119972,3cyclictest275-21systemd-journal22:37:020
249119972,1cyclictest15071-21diskmemload00:34:310
249119971,3cyclictest23515-21munin-run21:15:000
249119970,4cyclictest3932-21idleruntime-cro20:45:010
12466270,0sleep20-21swapper/200:00:222
31170260,1sleep20-21swapper/222:16:432
30025260,0sleep30-21swapper/300:10:523
249259966,0cyclictest0-21swapper/323:30:033
249259963,2cyclictest504-21dbus-daemon22:52:113
249259963,2cyclictest504-21dbus-daemon19:20:013
249259963,2cyclictest3725-21rm23:36:203
249259963,2cyclictest3697-21taskset20:42:153
249259963,2cyclictest30727-21snmpd22:10:093
249259963,2cyclictest30727-21snmpd20:29:473
249259963,2cyclictest30727-21snmpd19:43:053
249259963,2cyclictest30727-21snmpd19:13:553
249259963,2cyclictest30314-21sshd23:52:083
249259963,2cyclictest27034-21sh00:28:553
249259963,2cyclictest21745-21ssh21:32:483
249259963,2cyclictest20139-21sh21:50:373
249259963,2cyclictest15733-21cat23:05:163
249259963,1cyclictest0-21swapper/321:15:353
249259962,3cyclictest3210-21cat22:00:193
249259962,3cyclictest30727-21snmpd23:20:563
249259962,3cyclictest30727-21snmpd22:57:043
249259962,3cyclictest30727-21snmpd20:32:243
249259962,3cyclictest30727-21snmpd20:06:173
249259962,3cyclictest30727-21snmpd19:51:083
249259962,3cyclictest30727-21snmpd19:20:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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