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2026-08-18 - 15:21
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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 18, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
298972320291,19sleep10-21swapper/107:07:111
298722307278,19sleep20-21swapper/207:06:522
300262270215,17sleep00-21swapper/007:08:430
281532253220,22sleep30-21swapper/307:05:043
63202650,0sleep10-21swapper/112:34:451
307752630,1sleep334-21ksoftirqd/311:31:013
150772590,0sleep30-21swapper/307:45:133
121042590,0sleep00-21swapper/011:59:250
64292580,0sleep00-21swapper/011:35:500
64292580,0sleep00-21swapper/011:35:500
31252580,0sleep00-21swapper/011:15:120
311002580,0sleep00-21swapper/007:10:150
291282580,0sleep00-21swapper/011:50:120
300802560,0sleep00-21swapper/011:30:300
169252560,0sleep10-21swapper/110:05:181
243212530,0sleep20-21swapper/210:29:502
272282210,0sleep00-21swapper/009:13:430
4742180,0sleep10-21swapper/110:54:071
239072180,0sleep20-21swapper/211:46:252
13052150,0sleep10-21swapper/112:11:511
162602140,0sleep30-21swapper/312:01:123
3025399133,7cyclictest6192-21ssh10:38:021
3025399123,6cyclictest10322-21ssh11:19:301
3025399114,3cyclictest30584-21sh10:13:561
3025399113,7cyclictest0-21swapper/109:26:391
3025399113,6cyclictest29880-21ssh09:34:551
3025399113,6cyclictest0-21swapper/111:54:431
3025399113,5cyclictest9391-21ssh12:35:441
3025399113,5cyclictest20590-21diskmemload09:14:081
3025399113,5cyclictest11377-21ssh11:20:071
3025399113,3cyclictest31598-21ssh09:15:391
3025399113,3cyclictest24635-21ssh11:08:261
3025399113,3cyclictest20590-21diskmemload12:08:101
3025399113,3cyclictest12074-21sh09:43:171
3025399103,5cyclictest7461-21ssh10:00:101
3025399103,5cyclictest6603-21sh11:35:581
3025399103,5cyclictest6603-21sh11:35:581
3025399103,5cyclictest1514-21ssh09:36:371
3025399103,4cyclictest28933-21ssh10:32:001
3025399103,3cyclictest9092-21ssh10:59:161
3025399103,3cyclictest8533-21sed08:40:211
3025399103,3cyclictest32747-21ls10:15:111
3025399103,3cyclictest25315-21ssh10:49:531
3025399103,3cyclictest25222-21rm12:26:011
3025399103,3cyclictest19183-21sh12:22:471
3025399103,3cyclictest17733-21sed09:00:201
3025399103,3cyclictest17218-21sh11:42:421
3025399103,3cyclictest12998-21ssh09:24:481
3025399103,3cyclictest12707-21ssh10:22:161
3025399103,3cyclictest10438-21ssh11:58:081
3025399103,2cyclictest7655-21users12:15:211
3025399103,2cyclictest17450-21sed10:25:161
3025399102,5cyclictest848-21ssh11:32:561
3025399102,5cyclictest6775-21taskset08:38:421
3025399102,5cyclictest25843-21ssh09:51:031
3025399102,5cyclictest17165-21ssh09:45:481
3025399102,5cyclictest1531-21sh09:55:501
3025399102,5cyclictest10544-21ssh11:00:121
3025399102,4cyclictest31508-21ssh11:12:191
3025399102,3cyclictest9867-21perl10:40:161
3025399102,3cyclictest20590-21diskmemload12:04:501
302539997,1cyclictest21498-21apt-get08:00:121
302539996,2cyclictest504-21dbus-daemon08:20:001
302539996,2cyclictest25673-21cron08:10:011
302539995,3cyclictest275-21systemd-journal08:25:001
302539995,3cyclictest275-21systemd-journal07:25:011
302539995,3cyclictest19898-21ls09:05:201
302539995,3cyclictest18989-21sh07:55:011
302539995,3cyclictest16133-21perf09:00:001
302539995,3cyclictest14540-21sh07:45:011
302539995,3cyclictest11241-21awk07:35:181
302539994,3cyclictest275-21systemd-journal07:13:481
302539993,2cyclictest20590-21diskmemload11:26:241
302539992,5cyclictest16433-21seq07:46:101
302539992,2cyclictest0-21swapper/111:46:381
302619987,1cyclictest34-21ksoftirqd/312:30:003
302619986,1cyclictest22981-21sh11:07:093
302619984,3cyclictest275-21systemd-journal12:40:003
302619980,8cyclictest6649-21ssh10:19:023
302539984,3cyclictest9878-21grep08:45:151
302539984,3cyclictest9141-21which07:30:201
302539984,3cyclictest912-21grep07:15:121
302539984,3cyclictest5692-21/usr/sbin/munin07:25:151
302539984,3cyclictest26881-21ntp_states08:10:161
302539984,3cyclictest19748-21tune2fs07:55:151
302539984,3cyclictest11779-21gpgv08:50:011
302539984,2cyclictest275-21systemd-journal08:25:101
302539982,4cyclictest4318-21taskset08:34:181
302489980,5cyclictest7964-21sendmail10:20:000
302619976,1cyclictest34-21ksoftirqd/312:30:003
302619975,2cyclictest34-21ksoftirqd/312:00:013
302619974,2cyclictest12428-21perl08:50:133
302619973,3cyclictest504-21dbus-daemon10:35:003
302619971,4cyclictest0-21swapper/309:19:213
302619971,2cyclictest141rcu_preempt11:00:123
302569975,2cyclictest28-21ksoftirqd/212:15:002
302569975,1cyclictest28-21ksoftirqd/210:50:012
302569973,3cyclictest19667-11brltty11:14:362
302569973,1cyclictest0-21swapper/212:37:402
302489976,1cyclictest12-21ksoftirqd/010:55:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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