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2026-04-29 - 00:31
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Tue Apr 28, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24945672265187,28sleep10-21swapper/107:07:151
24947602249207,28sleep00-21swapper/007:09:160
25622612460,4sleep00-21swapper/009:31:370
179699460,3rtkit-daemon0-21swapper/109:55:371
179699450,3rtkit-daemon0-21swapper/110:16:281
179699450,3rtkit-daemon0-21swapper/008:42:370
25712692440,2sleep10-21swapper/109:43:241
179699440,3rtkit-daemon0-21swapper/010:49:140
25600202420,1sleep02560011-21cron09:30:000
26540792400,2sleep00-21swapper/011:30:360
179699380,3rtkit-daemon0-21swapper/110:01:410
26989592340,1sleep00-21swapper/012:30:180
2494937993229,2cyclictest18150irq/39-mmc012:25:051
249493799307,3cyclictest141rcu_preempt09:15:161
2494937993027,2cyclictest66950irq/132-enp2s011:34:041
249493799301,23cyclictest2618252-21apt-get10:45:151
249493399303,10cyclictest141rcu_preempt09:12:470
249493799296,3cyclictest141rcu_preempt08:10:181
2494937992926,2cyclictest66950irq/132-enp2s010:51:101
2494937992926,2cyclictest66950irq/132-enp2s010:25:191
2494937992926,2cyclictest18150irq/39-mmc007:20:061
249493799290,27cyclictest2564860-21sh09:35:131
2494933992918,9cyclictest2633796-21sh11:05:120
249493799288,18cyclictest26-21ksoftirqd/111:15:001
2494937992822,4cyclictest2670685-21rm11:53:551
2494937992815,7cyclictest2690788-21apt-get12:20:131
2494933992825,2cyclictest66950irq/132-enp2s009:10:000
26153522270,4sleep00-21swapper/010:40:200
2494937992724,2cyclictest66950irq/132-enp2s012:35:361
2494937992721,4cyclictest2601799-21sh10:23:211
249493799270,8cyclictest2636384-21ssh11:07:581
2494933992713,7cyclictest66950irq/132-enp2s009:20:120
179699270,5rtkit-daemon2576468-21diskstats09:50:161
2494937992623,2cyclictest66950irq/132-enp2s011:40:581
2494937992623,2cyclictest66950irq/132-enp2s009:48:551
249493799261,8cyclictest2699456-21gunzip12:30:231
2494937992614,7cyclictest66950irq/132-enp2s011:20:141
249493799260,8cyclictest2678875-21apt-config12:05:001
249493399264,3cyclictest141rcu_preempt10:50:150
2494933992611,9cyclictest2702130-21apt-get12:35:140
179699260,3rtkit-daemon1795-21rtkit-daemon08:03:151
179699260,18rtkit-daemon0-21swapper/012:09:530
249493799252,16cyclictest2528639-21apt-get08:30:131
2494937992514,6cyclictest66950irq/132-enp2s012:15:101
249493799250,9cyclictest2679243-21packagekitd12:05:031
249493399252,16cyclictest2599037-21apt-get10:20:120
249493399252,15cyclictest2548807-21apt-get09:15:130
2494933992511,8cyclictest2570248-1kworker/u9:210:15:110
179699250,4rtkit-daemon0-21swapper/012:00:070
179699250,4rtkit-daemon0-21swapper/008:38:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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