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2025-12-09 - 18:34
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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 Tue Dec 09, 2025 12:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25326742269206,48sleep00-21swapper/007:05:280
25333732259186,58sleep10-21swapper/107:07:181
2533755991936,173cyclictest2616010-21expr09:55:151
2533751991867,165cyclictest2616320-21if_enp2s009:55:200
2533751991276,107cyclictest2612878-21cut09:50:180
25337519912536,74cyclictest2605542-21needreboot09:40:200
253375599914,73cyclictest2612878-21needreboot09:50:191
27167722670,7sleep1251rcuc/112:09:071
125899610,4rtkit-daemon1257-21rtkit-daemon10:19:191
26479302590,8sleep0161rcuc/010:36:080
125899570,6rtkit-daemon2581733-21diskmemload09:15:120
125899570,4rtkit-daemon1257-21rtkit-daemon10:46:121
125899570,4rtkit-daemon1257-21rtkit-daemon10:46:121
125899530,4rtkit-daemon1257-21rtkit-daemon10:33:211
125899490,3rtkit-daemon0-21swapper/008:12:250
125899460,3rtkit-daemon0-21swapper/008:35:220
125899450,4rtkit-daemon2589760-21apt-get09:20:141
125899450,3rtkit-daemon0-21swapper/012:27:010
125899440,3rtkit-daemon0-21swapper/009:48:390
125899440,3rtkit-daemon0-21swapper/008:04:280
125899430,3rtkit-daemon1257-21rtkit-daemon11:17:201
125899420,3rtkit-daemon0-21swapper/008:24:550
125899410,3rtkit-daemon0-21swapper/012:35:020
125899410,3rtkit-daemon0-21swapper/008:29:350
125899400,3rtkit-daemon0-21swapper/012:15:390
125899390,7rtkit-daemon2598713-1kworker/u9:209:35:531
125899390,3rtkit-daemon0-21swapper/011:36:020
125899370,15rtkit-daemon2657644-21ssh10:50:111
253375599340,2cyclictest0-21swapper/112:30:181
26746822330,1sleep10-21swapper/111:12:091
125899320,3rtkit-daemon0-21swapper/107:53:521
2533755993128,2cyclictest63750irq/132-enp2s011:05:571
125899310,5rtkit-daemon2575383-21users08:50:260
253375199301,15cyclictest2581733-21diskmemload10:32:340
253375199301,15cyclictest2581733-21diskmemload10:16:420
125899300,1rtkit-daemon1257-21rtkit-daemon10:56:120
125899290,1rtkit-daemon1257-21rtkit-daemon09:36:560
253375599285,3cyclictest141rcu_preempt12:35:221
253375599283,9cyclictest2581985-21apt-get09:10:141
253375599283,6cyclictest261ksoftirqd/111:57:311
2533755992814,9cyclictest2538391-21apt-get07:20:141
253375599280,23cyclictest2623468-40apt-check10:05:141
253375599280,23cyclictest2623468-40apt-check10:05:131
253375199288,7cyclictest13-21ksoftirqd/007:24:560
253375199281,8cyclictest2581733-21diskmemload11:31:570
253375199281,14cyclictest2581733-21diskmemload11:17:110
125899280,4rtkit-daemon1257-21rtkit-daemon07:16:350
125899280,3rtkit-daemon0-21swapper/012:33:020
125899280,1rtkit-daemon1257-21rtkit-daemon08:19:110
253375599275,5cyclictest2581733-21diskmemload12:22:581
253375599273,6cyclictest26-21ksoftirqd/111:53:131
253375599273,6cyclictest261ksoftirqd/111:02:151
253375199274,3cyclictest141rcu_preempt09:20:190
253375199273,4cyclictest141rcu_preempt10:00:140
253375199271,9cyclictest2581733-21diskmemload09:11:260
253375199271,8cyclictest2581733-21diskmemload11:44:130
253375199271,8cyclictest2581733-21diskmemload10:22:050
125899270,1rtkit-daemon1257-21rtkit-daemon07:45:111
253375599263,15cyclictest2576046-21apt-get08:55:181
2533755992619,4cyclictest2562337-21/usr/sbin/munin08:20:151
2533755992617,5cyclictest2568216-21apt-get08:35:141
2533755992610,10cyclictest2710162-21apt-get12:00:131
2533751992620,4cyclictest2685587-21ssh11:25:470
253375199261,8cyclictest2581733-21diskmemload11:22:550
253375199261,8cyclictest2581733-21diskmemload10:54:360
253375199261,8cyclictest2581733-21diskmemload10:42:400
2533751992611,9cyclictest2651776-1kworker/u9:211:00:140
125899260,16rtkit-daemon26-21ksoftirqd/107:40:331
253375599255,3cyclictest2581733-21diskmemload12:18:561
2533755992511,8cyclictest63750irq/132-enp2s009:15:121
253375199259,5cyclictest2581733-21diskmemload10:27:500
253375199258,8cyclictest13-21ksoftirqd/007:32:460
253375199254,7cyclictest13-21ksoftirqd/008:30:300
2533751992520,3cyclictest2629083-21rm10:11:200
253375199251,6cyclictest2581733-21diskmemload12:09:210
253375199251,6cyclictest2581733-21diskmemload10:06:010
253375199251,6cyclictest2581733-21diskmemload10:06:010
253375199251,12cyclictest2581733-21diskmemload11:53:400
125899250,17rtkit-daemon2649535-21ssh10:39:371
253375599244,3cyclictest2581733-21diskmemload11:29:461
253375599242,15cyclictest2560383-21apt-get08:15:121
253375599242,15cyclictest2540343-21apt-get07:25:161
2533755992412,7cyclictest63750irq/132-enp2s012:10:191
2533755992412,7cyclictest63750irq/132-enp2s010:20:131
2533755992412,7cyclictest63750irq/132-enp2s009:30:151
253375599240,6cyclictest2699301-21fschecks_time11:45:161
253375599240,6cyclictest2699301-21fschecks_time11:45:161
253375599240,6cyclictest2554489-21apt-key08:00:051
253375199244,3cyclictest141rcu_preempt11:10:140
253375199241,7cyclictest2581733-21diskmemload12:23:230
253375199241,6cyclictest2581733-21diskmemload10:48:060
253375199241,6cyclictest2581733-21diskmemload10:48:050
253375599232,15cyclictest2604793-21apt-get09:40:121
253375599232,15cyclictest2556479-21apt-get08:05:141
253375599232,14cyclictest2695411-21apt-get11:40:151
253375599232,14cyclictest2579967-21apt-get09:05:141
253375599232,14cyclictest2536415-21apt-get07:15:141
253375199233,2cyclictest141rcu_preempt08:00:000
253375199231,5cyclictest2581733-21diskmemload09:27:330
125899230,4rtkit-daemon2638871-21ssh10:25:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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