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2026-06-25 - 11:10
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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 Thu Jun 25, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28380192262188,27sleep10-21swapper/119:05:581
28382472251181,26sleep00-21swapper/019:08:270
291179121450,2sleep12911793-21ssh21:41:341
28735112560,5sleep12873510-21dump-pmu-power20:35:011
29742552530,2sleep02974257-21sh23:08:450
179699470,3rtkit-daemon0-21swapper/020:42:410
179699450,3rtkit-daemon0-21swapper/122:56:511
179699450,3rtkit-daemon0-21swapper/122:46:181
179699450,3rtkit-daemon0-21swapper/021:52:540
179699440,3rtkit-daemon0-21swapper/123:01:181
179699440,3rtkit-daemon0-21swapper/122:52:301
179699440,3rtkit-daemon0-21swapper/021:18:301
179699420,3rtkit-daemon0-21swapper/100:06:261
179699400,3rtkit-daemon0-21swapper/123:44:311
179699400,3rtkit-daemon0-21swapper/123:17:211
179699390,3rtkit-daemon0-21swapper/123:48:131
2838551993316,11cyclictest2838674-21apt-get19:10:131
179699330,3rtkit-daemon0-21swapper/100:01:251
2838551993229,2cyclictest66950irq/132-enp2s023:32:051
2838551993127,2cyclictest2846591-21kworker/1:019:35:021
2838551993026,3cyclictest66950irq/132-enp2s021:20:211
283854899301,7cyclictest3024074-21apt-get00:20:130
2838551992912,11cyclictest2847485-21apt-get19:30:141
2838548992912,10cyclictest2992809-1kworker/u9:000:00:120
179699290,4rtkit-daemon2881525-21apt-get20:55:110
283854899282,4cyclictest2999745-21latency_hist23:45:010
283855199277,6cyclictest2919976-21ssh21:53:291
2838551992724,2cyclictest66950irq/132-enp2s022:02:441
2838551992719,6cyclictest2841195-21apt19:15:111
2838548992710,3cyclictest141rcu_preempt00:40:010
179699270,5rtkit-daemon2987875-21ssh23:27:061
2838551992612,4cyclictest2887202-21diskmemload23:58:521
2838551992612,4cyclictest2887202-21diskmemload21:46:191
2838551992611,4cyclictest2887202-21diskmemload00:29:111
30194842250,10sleep10-21swapper/100:11:561
283854899254,5cyclictest131ksoftirqd/023:45:100
283854899253,5cyclictest131ksoftirqd/023:04:560
283854899253,5cyclictest131ksoftirqd/021:36:440
283854899251,4cyclictest3020477-21python300:15:010
2838548992510,7cyclictest2869807-21apt-get20:25:120
283855199249,13cyclictest2923458-21ssh21:58:321
283855199243,15cyclictest2861581-21apt-get20:05:131
283855199242,15cyclictest2906487-21apt-get21:35:151
283855199242,15cyclictest2902673-21apt-get21:30:131
2838551992416,4cyclictest2887202-21diskmemload21:25:161
2838551992415,6cyclictest763-21dbus-daemon20:15:021
2838551992413,8cyclictest2939046-21df22:20:151
2838551992411,3cyclictest2887202-21diskmemload23:09:481
2838551992411,3cyclictest2887202-21diskmemload21:10:451
2838551992410,4cyclictest2887202-21diskmemload22:11:591
283854899242,14cyclictest3030326-21apt-get00:30:130
2838548992416,6cyclictest2914440-21ntp_states21:45:210
283854899241,5cyclictest131ksoftirqd/022:17:230
2838548992410,9cyclictest2964400-21apt-get22:55:130
283854899240,7cyclictest2953353-21dump-pmu-power22:40:000
283854899240,6cyclictest2927840-21latency_hist22:04:590
283854899240,4cyclictest2895805-21grep21:20:140
283855199234,17cyclictest2877566-21cat20:45:011
283855199233,13cyclictest3034031-21apt-get00:35:141
283855199232,15cyclictest3003901-21apt-get23:50:141
283855199232,14cyclictest2857662-21apt-get19:55:131
2838551992319,2cyclictest66950irq/132-enp2s000:20:211
283855199231,5cyclictest2999878-1kworker/1:0H00:15:011
2838551992315,4cyclictest2887202-21diskmemload23:21:121
283854899238,3cyclictest13-21ksoftirqd/022:50:400
283854899233,2cyclictest2887202-21diskmemload23:27:490
283854899232,14cyclictest2945894-21apt-get22:30:140
2838548992315,6cyclictest2866842-21systemctl20:15:240
283854899231,4cyclictest2840601-21munin-node19:15:010
283854899230,4cyclictest2978847-21df_inode23:15:150
179699230,4rtkit-daemon1795-21rtkit-daemon23:14:180
179699230,4rtkit-daemon1795-21rtkit-daemon23:14:180
179699230,14rtkit-daemon0-21swapper/021:16:100
2838551992217,3cyclictest2847275-21sh19:30:011
2838551992216,4cyclictest0-21swapper/120:35:161
2838551992210,3cyclictest2887202-21diskmemload23:35:041
283855199220,3cyclictest2949356-21python322:35:001
283855199220,20cyclictest2887266-21grep21:10:011
283855199220,19cyclictest2949356-21python322:35:011
283854899228,7cyclictest2982114-21apt-get23:20:110
283854899226,3cyclictest13-21ksoftirqd/021:25:190
283854899225,15cyclictest2921727-21tr21:55:240
283854899223,11cyclictest3027028-21apt-get00:25:130
283854899223,11cyclictest2877632-21apt-get20:45:140
283854899223,10cyclictest2957055-21apt-get22:45:140
283854899222,14cyclictest2873709-21apt-get20:35:130
283854899222,13cyclictest2879579-21apt-get20:50:130
283854899220,3cyclictest2842945-21apt-get19:20:040
283855199217,12cyclictest2883285-21sendmail20:59:591
283855199214,10cyclictest2853763-21apt-get19:45:111
283855199212,13cyclictest2855714-21apt-get19:50:141
283855199212,10cyclictest2859635-21apt-get20:00:141
283855199211,8cyclictest2928081-21apt-get22:05:111
2838551992115,3cyclictest2887202-21diskmemload23:13:041
2838551992115,3cyclictest2887202-21diskmemload23:13:041
2838551992115,3cyclictest2887202-21diskmemload00:32:041
283854899216,9cyclictest2926767-1kworker/u9:222:10:130
283854899213,9cyclictest2953606-21apt-get22:40:120
283854899213,11cyclictest2942390-21apt-get22:25:110
283854899213,10cyclictest3014587-21apt-get00:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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