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2026-03-12 - 08:39
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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 highest latencies:
System rackcslot4.osadl.org (updated Thu Mar 12, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26249222255182,58sleep10-21swapper/119:06:121
26235282251182,53sleep00-21swapper/019:05:100
179699480,14rtkit-daemon13-21ksoftirqd/021:20:220
179699450,6rtkit-daemon2726279-21ssh22:20:540
179699440,3rtkit-daemon0-21swapper/022:12:090
179699410,3rtkit-daemon0-21swapper/022:57:510
2625401993919,9cyclictest2667567-21wc20:55:011
179699390,3rtkit-daemon0-21swapper/023:04:170
179699350,4rtkit-daemon1795-21rtkit-daemon23:14:381
262540199340,24cyclictest0-21swapper/123:45:021
2625398993329,3cyclictest66950irq/132-enp2s023:14:380
2625398993113,3cyclictest2760073-21apt-key23:10:000
262540199302,7cyclictest2789892-21apt-get23:50:131
262539899307,8cyclictest13-21ksoftirqd/019:28:090
262540199291,22cyclictest2672031-21apt-get21:05:141
2625398992924,3cyclictest66950irq/132-enp2s023:56:490
2625401992813,9cyclictest2643706-21apt-get19:55:111
262540199280,26cyclictest0-21swapper/100:36:491
262539899289,6cyclictest13-21ksoftirqd/023:34:570
179699280,4rtkit-daemon1795-21rtkit-daemon21:36:231
262540199275,3cyclictest141rcu_preempt00:00:011
262540199273,16cyclictest2659366-21apt-get20:35:111
2625401992712,9cyclictest2775097-21apt-get23:30:121
262540199271,23cyclictest2769227-21sshd23:20:571
262540199269,5cyclictest1-21systemd00:15:021
262540199262,4cyclictest2673784-21diskmemload22:20:141
262540199261,5cyclictest2759950-21idleruntime-cro23:10:001
262540199261,5cyclictest261ksoftirqd/123:00:021
2625401992613,11cyclictest26-21ksoftirqd/121:20:001
262540199261,21cyclictest2661838-21apt-get20:40:211
262540199260,6cyclictest2799933-21seq00:03:581
262539899268,6cyclictest13-21ksoftirqd/022:27:120
262539899262,22cyclictest2661172-21http20:40:030
2625398992613,11cyclictest13-21ksoftirqd/023:45:250
2625398992612,4cyclictest2673784-21diskmemload21:33:530
2625398992611,4cyclictest2673784-21diskmemload22:40:360
2625398992611,4cyclictest2673784-21diskmemload22:39:180
179699260,4rtkit-daemon2809396-21ssh00:18:471
179699260,4rtkit-daemon1795-21rtkit-daemon22:10:321
262540199259,14cyclictest2647414-21cron20:05:001
2625401992522,2cyclictest2655294-21kworker/1:221:25:411
262540199252,16cyclictest2631991-21apt-get19:25:131
262540199252,15cyclictest2764074-21apt-get23:15:141
262540199252,15cyclictest2657415-21apt-get20:30:101
2625401992516,7cyclictest2671618-21date21:05:021
262539899259,7cyclictest13-21ksoftirqd/021:47:280
2625398992521,3cyclictest2639630-21kworker/0:219:54:190
2625398992517,4cyclictest2673784-21diskmemload23:19:270
2625398992512,3cyclictest2673784-21diskmemload22:08:440
2625398992511,4cyclictest2673784-21diskmemload22:00:420
2625398992511,4cyclictest2673784-21diskmemload21:39:560
2625398992511,4cyclictest2673784-21diskmemload21:14:230
2625398992510,4cyclictest2673784-21diskmemload23:28:370
262540199242,5cyclictest261ksoftirqd/123:41:391
262540199242,15cyclictest2706805-21apt-get21:55:161
2625401992410,9cyclictest2711450-1kworker/u9:022:30:121
262539899247,3cyclictest141rcu_preempt00:25:000
262539899242,7cyclictest2655466-21apt-get20:25:130
262539899242,2cyclictest141rcu_preempt19:40:000
262539899242,1cyclictest141rcu_preempt23:45:010
262539899242,16cyclictest2721037-21apt-get22:15:140
262539899242,15cyclictest2817320-21apt-get00:30:110
2625398992416,4cyclictest2673784-21diskmemload21:43:470
2625398992411,3cyclictest2673784-21diskmemload21:25:350
2625398992410,8cyclictest66950irq/132-enp2s021:15:120
262540199235,5cyclictest26-21ksoftirqd/122:55:131
262540199234,10cyclictest2667701-21apt-get20:55:121
262540199233,14cyclictest2710337-21apt-get22:00:131
262540199232,15cyclictest2674029-21apt-get21:10:131
262540199232,15cyclictest2663807-21apt-get20:45:121
262540199232,15cyclictest2663807-21apt-get20:45:121
262540199232,15cyclictest2637860-21apt-get19:40:121
262540199232,14cyclictest2778495-21apt-get23:35:121
262540199232,14cyclictest2742241-21apt-get22:45:111
262540199232,14cyclictest2699599-21apt-get21:45:141
262540199231,7cyclictest2774580-21latency_hist23:30:021
262540199230,3cyclictest2641885-21tr19:50:141
262539899239,9cyclictest2703314-21apt-get21:50:140
2625398992318,3cyclictest2647435-21ls20:05:000
2625398992316,3cyclictest2673784-21diskmemload23:37:470
262539899231,4cyclictest1-21systemd21:05:010
2625398992314,7cyclictest763-21dbus-daemon00:15:000
179699230,3rtkit-daemon1795-21rtkit-daemon21:53:161
262540199229,9cyclictest2714058-21apt-get22:05:121
262540199223,11cyclictest2810158-21apt-get00:20:101
262540199222,14cyclictest2728199-21apt-get22:25:141
262540199222,14cyclictest2639811-21apt-get19:45:141
262540199221,4cyclictest2696875-21pmu-power21:40:221
262540199220,20cyclictest2631615-21sshd19:23:181
262539899229,10cyclictest13-21ksoftirqd/000:15:030
262539899223,2cyclictest141rcu_preempt23:20:170
2625398992219,2cyclictest66950irq/132-enp2s000:36:490
2625398992218,2cyclictest2746027-21sh22:50:150
262539899221,2cyclictest141rcu_preempt19:30:220
179699220,4rtkit-daemon1795-21rtkit-daemon22:40:261
179699220,3rtkit-daemon1795-21rtkit-daemon22:38:321
262540199214,11cyclictest2651547-21apt-get20:15:161
262540199213,17cyclictest26-21ksoftirqd/121:24:371
262540199213,11cyclictest2800613-21apt-get00:05:101
262540199212,13cyclictest2813709-21apt-get00:25:151
262540199212,13cyclictest2653520-21apt-get20:20:141
2625401992116,3cyclictest2634253-21fschecks_time19:30:161
262540199210,3cyclictest0-21swapper/122:15:231
262539899213,2cyclictest141rcu_preempt20:10:170
262539899212,2cyclictest141rcu_preempt00:26:110
2625398992115,3cyclictest2673784-21diskmemload22:34:300
262539899211,3cyclictest141rcu_preempt20:15:190
2625398992113,6cyclictest2665211-21seq20:46:290
2625398992113,6cyclictest2665211-21seq20:46:290
262539899211,18cyclictest2661177-21systemd-run20:40:010
179699210,3rtkit-daemon0-21swapper/120:26:001
262540199203,10cyclictest2745802-21apt-get22:50:131
262540199202,13cyclictest2635886-21apt-get19:35:111
262540199202,12cyclictest2817300-21/usr/sbin/munin00:30:261
2625401992016,2cyclictest0-21swapper/120:15:001
2625401992015,3cyclictest2647626-21apt-get20:05:101
2625401992014,3cyclictest2689661-21sendmail_mailst21:30:231
262540199201,13cyclictest2627469-21munin-node19:15:021
262539899202,2cyclictest141rcu_preempt21:05:210
262539899202,13cyclictest2625543-21apt-get19:10:120
262539899201,9cyclictest2792076-21rm23:52:210
2625398992016,3cyclictest13-21ksoftirqd/020:55:000
2625398992015,3cyclictest2644237-21uname19:55:180
2625398992012,6cyclictest2631783-21cron19:25:000
2625398992011,7cyclictest2637921-21sort19:40:120
262539899200,9cyclictest2708877-21rm21:57:190
262539899200,2cyclictest141rcu_preempt20:09:180
262539899191,3cyclictest141rcu_preempt00:00:170
2625398991912,5cyclictest2641388-21seq19:48:190
262539899191,16cyclictest2744674-21ssh22:48:040
262539899191,13cyclictest2801420-21/usr/sbin/munin00:05:190
2625398991910,7cyclictest2657490-21ls20:30:120
262539899190,3cyclictest141rcu_preempt21:00:000
262540199180,16cyclictest0-21swapper/119:15:011
2625398991810,6cyclictest893-21snmpd20:24:210
262539899179,6cyclictest2628839-21ntpq19:15:210
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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