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2026-04-24 - 03:01
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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 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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