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2026-08-25 - 10:41
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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 Tue Aug 25, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12882331302,19sleep20-21swapper/219:06:342
12922286256,20sleep10-21swapper/119:06:371
13112270239,20sleep30-21swapper/319:06:473
14002257225,19sleep00-21swapper/019:07:440
55892660,0sleep00-21swapper/021:56:180
225152640,0sleep10-21swapper/122:45:161
4602630,3sleep228-21ksoftirqd/221:34:292
82912610,0sleep00-21swapper/022:36:390
106502610,0sleep00-21swapper/023:35:490
43532550,0sleep00-21swapper/023:53:550
260392550,0sleep20-21swapper/221:49:522
146932200,1chrt14692-21ssh00:39:401
288042190,0sleep30-21swapper/323:48:013
270262190,0sleep20-21swapper/200:27:042
43312170,0sleep10-21swapper/120:25:131
313402160,0sleep10-21swapper/123:29:531
183882160,0sleep00-21swapper/021:45:130
239852140,0sleep30-21swapper/321:48:173
166599143,6cyclictest23881-21diskmemload00:38:350
81822130,0sleep10-21swapper/100:15:261
143582130,1sleep30-21swapper/321:23:053
205242120,0sleep30-21swapper/322:44:383
167899126,1cyclictest141rcu_preempt00:05:143
166599122,6cyclictest15190-21sh22:40:320
166599122,6cyclictest10946-21ssh00:17:320
166599120,3cyclictest4935-21sh00:33:360
166599120,3cyclictest2922-21chrt22:53:120
166599120,2cyclictest23359-21rm22:26:070
166599120,1cyclictest17369-21awk19:40:200
166599112,5cyclictest12562-21taskset20:42:410
166599110,2cyclictest893-21cat21:15:150
166599110,2cyclictest25699-21ssh00:26:030
166599110,2cyclictest2103-21sh00:10:590
166599110,2cyclictest13994-21sh22:20:350
166599110,2cyclictest11445-21grep22:00:160
166599110,1cyclictest281972sleep023:47:340
166599110,1cyclictest17770-21fschecks_count21:25:110
166599110,1cyclictest0-21swapper/022:30:150
166599110,1cyclictest0-21swapper/022:13:040
116682110,0sleep00-21swapper/023:58:030
253032100,0sleep30-21swapper/323:06:093
167899109,1cyclictest34-21ksoftirqd/319:15:013
167899108,2cyclictest34-21ksoftirqd/319:25:013
167899108,1cyclictest34-21ksoftirqd/300:00:003
166599103,6cyclictest11262-21sh21:20:440
166599102,7cyclictest501-21in:imuxsock20:25:000
166599102,7cyclictest491-21systemd-logind00:05:000
166599102,6cyclictest275-21systemd-journal20:03:530
166599102,5cyclictest1762-21sh23:11:300
166599101,2cyclictest275-21systemd-journal20:00:000
166599101,1cyclictest26699-21apt-get21:50:110
166599100,9cyclictest4001-21munin-node19:15:020
166599100,6cyclictest26951-21ssh21:10:450
166599100,2cyclictest6277-21rm21:37:310
166599100,2cyclictest23881-21diskmemload22:55:150
166599100,1cyclictest703-21ps20:15:190
166599100,1cyclictest6908-21ssh23:15:130
166599100,1cyclictest26934-21sh22:09:520
166599100,1cyclictest25758-21ssh21:30:130
166599100,1cyclictest0-21swapper/022:15:160
16789997,2cyclictest34-21ksoftirqd/300:20:003
16789997,1cyclictest34-21ksoftirqd/322:05:013
16669992,4cyclictest27070-21perf20:05:001
16659992,6cyclictest30727-21snmpd20:09:550
16659992,6cyclictest30727-21snmpd19:46:570
16659992,6cyclictest23457-21rm23:25:060
16659991,7cyclictest9960-21cut19:25:190
16659991,3cyclictest14987-21expr00:20:080
16659990,3cyclictest4874-21cat20:25:160
16659990,3cyclictest275-21systemd-journal19:21:480
16659990,2cyclictest7991-21chrt20:31:320
16659990,2cyclictest483-21avahi-daemon22:50:010
16659990,2cyclictest1873-21chrt19:10:050
16659990,2cyclictest13933-21chrt19:35:120
16659990,1cyclictest8561-21apt-get20:35:120
16659990,1cyclictest275-21systemd-journal21:45:010
16659990,1cyclictest27058-21ssh23:07:280
16659990,1cyclictest22012-21perf23:05:010
16659990,1cyclictest21651-21apt21:05:000
16659990,1cyclictest17455-21apt-get20:55:110
16659990,1cyclictest1698-21ssh23:30:230
16659990,1cyclictest16708-21apt-get23:40:130
16659990,1cyclictest11736-21apt-get19:30:100
16659990,1cyclictest0-21swapper/023:21:070
7868280,0sleep17871-21gltestperf19:20:151
27130280,0sleep30-21swapper/321:50:133
16789986,1cyclictest34-21ksoftirqd/320:00:003
16659980,2cyclictest21910-21apt21:05:110
16659980,2cyclictest21010-21df19:50:130
16659980,2cyclictest15786-21gltestperf20:50:150
16659980,2cyclictest13143-21tr20:45:130
16659980,1cyclictest29274-21apt-get20:10:010
16659980,1cyclictest14507-40systemctl00:00:000
31893270,0sleep10-21swapper/123:30:011
18635270,0sleep10-21swapper/123:21:361
16789976,1cyclictest34-21ksoftirqd/323:20:013
16789976,1cyclictest34-21ksoftirqd/323:15:013
16789975,2cyclictest34-21ksoftirqd/319:15:013
16789975,1cyclictest34-21ksoftirqd/300:25:003
16789974,3cyclictest34-21ksoftirqd/319:40:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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