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2025-12-05 - 23:44
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Fri Dec 05, 2025 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22161152268184,19sleep00-21swapper/007:09:150
22157592263180,68sleep10-21swapper/107:05:271
24008112800,1chrt2400812-21/usr/sbin/munin12:35:161
23364402450,4sleep12336438-21grep11:10:181
125899450,3rtkit-daemon0-21swapper/109:40:421
22713992440,5sleep02271128-21/usr/sbin/munin09:45:160
125899440,3rtkit-daemon0-21swapper/111:00:111
22824942430,1sleep00-21swapper/009:59:370
125899430,3rtkit-daemon0-21swapper/107:23:451
125899400,3rtkit-daemon0-21swapper/107:43:531
2216392993513,5cyclictest13-21ksoftirqd/008:00:010
2216392993510,7cyclictest13-21ksoftirqd/007:10:110
221639799348,6cyclictest26-21ksoftirqd/112:30:131
221639799340,2cyclictest0-21swapper/111:55:561
2216392993412,5cyclictest13-21ksoftirqd/011:20:000
2216392993315,5cyclictest13-21ksoftirqd/009:40:000
2216392993311,7cyclictest13-21ksoftirqd/009:55:000
2216397993224,6cyclictest2390205-21taskset12:22:071
221639299329,3cyclictest2320646-21latency_hist10:50:000
125899320,3rtkit-daemon0-21swapper/010:25:580
221639799315,6cyclictest26-21ksoftirqd/111:20:131
2216397993128,2cyclictest17350irq/39-mmc011:05:171
2216397993111,4cyclictest26-21ksoftirqd/111:25:011
2216392993115,4cyclictest13-21ksoftirqd/010:17:420
2216392993112,5cyclictest13-21ksoftirqd/010:25:000
125899310,9rtkit-daemon849-21snmpd07:12:001
221639799301,23cyclictest2350973-40apt-check11:30:171
2216397993010,6cyclictest26-21ksoftirqd/111:20:011
125899300,8rtkit-daemon2240608-21cron08:55:001
221639799295,9cyclictest26-21ksoftirqd/109:21:071
221639799290,9cyclictest2374293-21awk12:00:191
2216392992912,6cyclictest13-21ksoftirqd/012:30:250
2216392992911,6cyclictest13-21ksoftirqd/009:25:250
2216392992910,5cyclictest13-21ksoftirqd/010:10:000
221639799285,4cyclictest26-21ksoftirqd/110:21:261
221639799285,3cyclictest141rcu_preempt12:10:141
221639799284,3cyclictest141rcu_preempt10:35:151
221639799283,23cyclictest26-21ksoftirqd/110:50:001
2216397992825,2cyclictest63750irq/132-enp2s010:40:511
221639299287,17cyclictest141rcu_preempt12:29:290
221639299287,16cyclictest141rcu_preempt09:34:130
2216392992812,10cyclictest2323615-1kworker/u9:210:55:140
125899280,3rtkit-daemon0-21swapper/110:09:401
221639799279,1cyclictest141rcu_preempt09:14:131
221639799278,6cyclictest26-21ksoftirqd/107:15:051
221639799278,4cyclictest0-21swapper/107:25:231
221639799277,6cyclictest26-21ksoftirqd/108:45:011
221639799276,6cyclictest26-21ksoftirqd/109:35:221
221639799272,21cyclictest2271147-21apt-get09:45:131
2216397992720,5cyclictest2276620-21taskset09:51:091
2216397992710,10cyclictest2234286-21apt-get08:25:131
221639299277,3cyclictest141rcu_preempt10:05:000
221639299276,17cyclictest141rcu_preempt12:14:050
2216392992719,6cyclictest13-21ksoftirqd/011:00:190
2216392992711,3cyclictest13-21ksoftirqd/009:45:010
2216392992710,2cyclictest141rcu_preempt09:16:210
125899270,4rtkit-daemon1257-21rtkit-daemon09:24:130
2216397992623,2cyclictest63750irq/132-enp2s009:30:071
2216397992614,7cyclictest2282998-21apt-get10:00:161
221639799261,23cyclictest2302290-21fschecks_time10:25:171
2216397992611,7cyclictest2231009-21apt-get08:10:121
221639299266,16cyclictest141rcu_preempt10:44:270
2216392992620,4cyclictest2369148-21ssh11:53:590
2216392992619,5cyclictest13-21ksoftirqd/011:25:010
221639799257,16cyclictest0-21swapper/109:05:011
2216397992513,7cyclictest63750irq/132-enp2s009:15:131
221639799251,22cyclictest2392736-21fschecks_time12:25:191
2216397992511,3cyclictest63750irq/132-enp2s012:10:011
221639299256,15cyclictest141rcu_preempt10:31:360
221639299255,16cyclictest141rcu_preempt11:45:340
221639299254,3cyclictest141rcu_preempt11:40:020
221639299254,3cyclictest141rcu_preempt11:34:580
221639299254,3cyclictest141rcu_preempt11:05:150
221639299252,16cyclictest2244146-21apt-get09:10:090
2216392992519,4cyclictest13-21ksoftirqd/010:10:170
2216392992518,5cyclictest13-21ksoftirqd/009:10:010
2216392992514,9cyclictest131ksoftirqd/007:25:010
2216392992510,3cyclictest13-21ksoftirqd/011:10:110
125899250,5rtkit-daemon2233886-21runrttasks08:23:031
125899250,3rtkit-daemon0-21swapper/110:51:471
125899250,3rtkit-daemon0-21swapper/108:04:521
125899250,17rtkit-daemon0-21swapper/110:58:391
221639799246,3cyclictest141rcu_preempt10:15:021
221639799246,2cyclictest141rcu_preempt12:15:191
221639799241,5cyclictest2362225-21apt-get11:45:151
221639799241,16cyclictest2255709-21apt-get09:25:131
2216397992410,9cyclictest2240820-21apt-get08:55:101
221639299246,3cyclictest141rcu_preempt10:39:590
2216392992417,5cyclictest2350243-21cron11:30:000
2216392992410,3cyclictest13-21ksoftirqd/010:50:150
125899240,16rtkit-daemon0-21swapper/008:40:120
221639799233,3cyclictest141rcu_preempt11:41:431
221639799230,4cyclictest2243895-21diskmemload09:55:211
221639299237,3cyclictest141rcu_preempt07:40:160
221639299237,14cyclictest141rcu_preempt12:17:190
221639299235,2cyclictest141rcu_preempt12:35:450
221639299234,3cyclictest2243895-21diskmemload12:09:160
221639299233,2cyclictest141rcu_preempt12:04:090
221639299233,2cyclictest141rcu_preempt07:15:040
2216392992311,7cyclictest13-21ksoftirqd/011:40:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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