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2026-04-23 - 17:51
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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 Apr 23, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27552392257180,27sleep10-21swapper/107:09:421
27543422244203,27sleep00-21swapper/007:05:270
288521921270,3sleep00-21swapper/010:55:160
27716182710,4sleep02771619-21sh07:50:000
179699640,4rtkit-daemon1795-21rtkit-daemon10:15:210
179699610,13rtkit-daemon1795-21rtkit-daemon12:08:230
29572342530,2sleep12957232-21df12:30:151
179699520,3rtkit-daemon1795-21rtkit-daemon10:09:271
179699510,3rtkit-daemon1795-21rtkit-daemon07:22:380
275539399496,13cyclictest2842557-21apt-get10:00:140
179699480,4rtkit-daemon1795-21rtkit-daemon11:13:130
179699480,3rtkit-daemon0-21swapper/108:10:511
179699470,4rtkit-daemon0-21swapper/111:33:401
179699460,4rtkit-daemon1795-21rtkit-daemon10:27:041
179699460,3rtkit-daemon0-21swapper/108:16:241
179699440,3rtkit-daemon1795-21rtkit-daemon08:38:391
179699440,3rtkit-daemon1795-21rtkit-daemon08:38:391
275539399432,11cyclictest2803615-21apt-get09:10:100
2755393994215,9cyclictest2853576-21sh10:14:000
179699420,3rtkit-daemon0-21swapper/110:59:531
179699420,3rtkit-daemon0-21swapper/110:41:371
179699420,3rtkit-daemon0-21swapper/107:58:461
179699420,3rtkit-daemon0-21swapper/107:45:321
275539399414,13cyclictest2944855-21sh12:13:390
275539399414,13cyclictest2828023-21/usr/sbin/munin09:40:190
275539399413,14cyclictest2952024-21sh12:23:000
275539399413,14cyclictest2808421-21perl09:15:170
275539399413,14cyclictest2774434-21grep07:55:210
275539399413,13cyclictest2873278-21apt-get10:40:120
275539399413,12cyclictest2923295-21apt-get11:45:140
275539399412,12cyclictest2960585-21apt-get12:35:130
275539399412,11cyclictest2892530-21apt-get11:05:130
275539399412,10cyclictest2803371-21diskmemload09:45:250
179699410,3rtkit-daemon0-21swapper/108:32:131
28038262400,4sleep10-21swapper/109:10:121
2755401994015,7cyclictest26-21ksoftirqd/109:40:241
275539399406,12cyclictest2871130-21ssh10:35:570
275539399405,10cyclictest2803371-21diskmemload11:15:170
275539399403,13cyclictest2776855-21grep08:00:240
275539399403,13cyclictest2776855-21grep08:00:240
275539399403,12cyclictest2930868-21apt-get11:55:120
275539399397,9cyclictest2890319-21ssh11:01:080
275539399395,14cyclictest2825308-21ssh09:35:330
275539399393,14cyclictest2911729-21dpkg11:30:020
275539399393,11cyclictest2803371-21diskmemload11:41:150
275539399392,14cyclictest29345302sleep012:00:040
275539399392,13cyclictest2838736-21cat09:55:100
275539399391,13cyclictest28606922sleep010:22:400
179699390,3rtkit-daemon0-21swapper/112:10:431
179699390,3rtkit-daemon0-21swapper/108:49:301
179699390,3rtkit-daemon0-21swapper/107:17:101
275539399386,12cyclictest2929057-21ssh11:51:490
275539399386,10cyclictest2960121-21ssh12:34:330
275539399385,12cyclictest2865609-21ssh10:30:090
275539399384,13cyclictest2814335-21ssh09:22:330
275539399384,13cyclictest2780761-21sed08:10:230
275539399384,13cyclictest2778955-21awk08:05:250
275539399383,13cyclictest2878968-21sh10:46:390
275539399383,11cyclictest2797058-21python308:55:020
275539399382,11cyclictest2904257-21apt-get11:20:120
275539399382,10cyclictest2803371-21diskmemload09:26:570
2755401993721,4cyclictest26-21ksoftirqd/108:50:221
275540199370,22cyclictest26-21ksoftirqd/112:30:021
275539399376,11cyclictest2758825-21/usr/sbin/munin07:15:220
275539399373,13cyclictest2838522-21systemctl09:55:000
275539399373,10cyclictest2803371-21diskmemload11:40:000
275539399371,12cyclictest2881236-21apt-get10:50:120
275539399371,12cyclictest2881236-21apt-get10:50:110
179699370,3rtkit-daemon0-21swapper/108:58:401
275539399363,12cyclictest2755535-21apt-get07:10:090
275539399362,14cyclictest2864269-21chrt10:27:350
275539399362,14cyclictest2763674-21seq07:29:340
275539399362,12cyclictest29080052chrt11:25:020
275539399361,13cyclictest2956303-21seq12:28:590
275539399361,11cyclictest2846869-21apt-get10:05:120
275539399353,11cyclictest2789684-21/usr/sbin/munin08:35:160
275539399353,11cyclictest2789684-21/usr/sbin/munin08:35:160
179699350,3rtkit-daemon1795-21rtkit-daemon10:39:591
275540199347,7cyclictest26-21ksoftirqd/111:00:171
2755401993432,1cyclictest0-21swapper/107:32:231
275539399342,13cyclictest2781550-21seq08:15:040
275539399342,11cyclictest2795189-21cat08:50:010
2755393993418,7cyclictest2945718-21apt-get12:15:140
179699340,3rtkit-daemon0-21swapper/007:25:001
275540199336,7cyclictest251rcuc/111:36:331
275540199335,8cyclictest26-21ksoftirqd/111:15:121
275539399332,11cyclictest2766379-21cat07:35:170
275539399332,10cyclictest2796526-21awk08:50:240
2755393993315,10cyclictest2801608-21apt-get09:05:110
179699330,1rtkit-daemon1795-21rtkit-daemon08:42:541
275540199326,9cyclictest2925402-21sh11:47:091
275540199324,19cyclictest26-21ksoftirqd/110:50:431
275540199324,19cyclictest26-21ksoftirqd/110:50:421
2755401993211,3cyclictest141rcu_preempt09:15:131
275539399321,11cyclictest2765541-21seq07:33:390
275540199319,3cyclictest141rcu_preempt11:10:131
275540199318,3cyclictest141rcu_preempt11:40:131
275540199317,9cyclictest2936562-21sh12:01:521
275540199317,6cyclictest26-21ksoftirqd/111:20:141
275540199317,3cyclictest141rcu_preempt09:30:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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