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2026-06-09 - 15:50
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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 Jun 09, 2026 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
313742314289,16sleep20-21swapper/207:09:392
313462274244,20sleep10-21swapper/107:09:171
311622266234,21sleep00-21swapper/007:07:100
314042260229,20sleep30-21swapper/307:10:003
313822630,0sleep10-21swapper/110:14:241
170562610,5sleep334-21ksoftirqd/310:45:013
90872600,0sleep10-21swapper/111:38:281
317702600,0sleep10-21swapper/111:12:541
182042580,0sleep30-21swapper/311:05:023
272402560,0sleep30-21swapper/311:30:023
248422560,0sleep10-21swapper/109:30:291
97652540,0sleep20-21swapper/211:58:352
19362540,0sleep21937-21expr10:55:122
100872540,0sleep00-21swapper/011:19:450
34612520,0sleep00-21swapper/010:55:270
194582200,0sleep20-21swapper/212:04:432
19832180,0sleep10-21swapper/109:36:301
51672150,0sleep30-21swapper/311:35:263
294722150,0sleep30-21swapper/311:11:073
31501991413,1cyclictest12-21ksoftirqd/011:10:010
31501991211,1cyclictest12-21ksoftirqd/011:45:010
31501991211,1cyclictest12-21ksoftirqd/009:50:020
107672120,0sleep00-21swapper/011:20:050
3150199118,2cyclictest12-21ksoftirqd/008:40:000
31501991110,1cyclictest12-21ksoftirqd/009:55:020
52442100,0chrt0-21swapper/211:35:282
3150199109,1cyclictest12-21ksoftirqd/011:05:010
3150199109,1cyclictest12-21ksoftirqd/007:15:020
3150199107,2cyclictest12-21ksoftirqd/009:45:010
315019998,1cyclictest12-21ksoftirqd/012:00:000
315019998,1cyclictest12-21ksoftirqd/007:20:010
8529280,0sleep00-21swapper/009:20:550
315019987,1cyclictest131rcuc/010:20:000
315019987,1cyclictest12-21ksoftirqd/012:40:000
315019987,1cyclictest12-21ksoftirqd/011:15:010
315019987,1cyclictest12-21ksoftirqd/010:30:000
315019986,2cyclictest12-21ksoftirqd/009:15:110
315019985,2cyclictest12-21ksoftirqd/010:35:000
30780280,0sleep00-21swapper/010:52:550
26430280,0sleep20-21swapper/211:49:062
315139975,2cyclictest21397-21diskmemload10:45:453
315139974,2cyclictest658-21snmpd09:45:553
315139974,2cyclictest10258-21cron08:45:013
315139973,3cyclictest275-21systemd-journal09:42:293
315139973,3cyclictest10216-21ssh09:22:143
315089975,2cyclictest28-21ksoftirqd/207:15:012
315089974,2cyclictest275-21systemd-journal10:47:372
315089974,2cyclictest22938-21ntpq09:10:182
315089974,2cyclictest17563-11brltty09:26:192
315089973,3cyclictest504-21dbus-daemon12:25:002
315089973,3cyclictest20667-21expr07:55:132
315059975,1cyclictest22-21ksoftirqd/112:15:121
315059975,1cyclictest22-21ksoftirqd/108:05:131
315059975,1cyclictest10457-21plymouth11:20:011
315059973,3cyclictest9906-21hddtemp_smartct10:40:151
315059973,3cyclictest275-21systemd-journal12:05:291
315059973,3cyclictest17563-11brltty10:51:471
315059972,3cyclictest22340-21idleruntime-cro08:00:011
315059971,4cyclictest0-21swapper/109:56:531
315059971,1cyclictest141rcu_preempt10:35:141
315059970,4cyclictest13832-21dump-pmu-power09:25:011
315019976,1cyclictest12-21ksoftirqd/011:50:010
315019976,1cyclictest12-21ksoftirqd/010:25:000
315019976,1cyclictest12-21ksoftirqd/009:40:000
315019976,1cyclictest12-21ksoftirqd/009:30:000
315019976,1cyclictest12-21ksoftirqd/009:30:000
315019976,1cyclictest12-21ksoftirqd/008:55:010
315019976,1cyclictest12-21ksoftirqd/008:25:000
315019976,1cyclictest12-21ksoftirqd/008:15:010
315019976,1cyclictest12-21ksoftirqd/007:35:010
315019976,1cyclictest12-21ksoftirqd/007:25:010
315019975,2cyclictest12-21ksoftirqd/012:29:590
315019975,2cyclictest12-21ksoftirqd/012:20:000
315019975,2cyclictest12-21ksoftirqd/008:05:010
315019975,1cyclictest131rcuc/010:10:010
315019974,2cyclictest12-21ksoftirqd/008:20:000
315019973,3cyclictest658-21snmpd10:36:490
315019973,3cyclictest658-21snmpd09:55:460
315019973,3cyclictest275-21systemd-journal11:34:480
315019973,3cyclictest2279-21ntpq08:25:160
315019972,3cyclictest275-21systemd-journal10:05:010
315019972,3cyclictest275-21systemd-journal08:56:430
315019972,1cyclictest141rcu_preempt11:55:000
315019972,1cyclictest141rcu_preempt07:55:020
315019970,7cyclictest0-21swapper/009:14:220
21171270,0sleep30-21swapper/310:27:233
1023270,0sleep20-21swapper/212:32:142
315139966,0cyclictest0-21swapper/311:54:543
315139964,1cyclictest8582-21cron07:30:003
315139963,2cyclictest6498-21seq10:38:173
315139963,2cyclictest504-21dbus-daemon07:15:013
315139963,2cyclictest31765-21ssh10:34:113
315139963,2cyclictest3122-21uname07:15:173
315139963,2cyclictest2796-21grep08:25:203
315139963,2cyclictest23614-21ssh12:25:513
315139963,2cyclictest2173-21sshd12:13:283
315139963,2cyclictest21587-21awk11:45:213
315139963,2cyclictest16075-21uname08:55:183
315139963,2cyclictest15382-21ssh09:25:183
315139963,2cyclictest11546-21sh12:19:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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