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2026-03-19 - 00:53
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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 Wed Mar 18, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24400942262180,19sleep00-21swapper/007:07:040
24400632258186,28sleep10-21swapper/107:06:451
252794021590,2sleep10-21swapper/110:01:311
179699810,4rtkit-daemon1795-21rtkit-daemon10:14:151
179699760,4rtkit-daemon1795-21rtkit-daemon11:22:211
179699720,4rtkit-daemon1795-21rtkit-daemon07:35:271
179699700,4rtkit-daemon1795-21rtkit-daemon07:26:431
179699650,17rtkit-daemon0-21swapper/011:14:401
244049799592,37cyclictest2507541-21apt-get09:35:140
244049799561,36cyclictest2568570-21apt-get11:00:110
179699560,3rtkit-daemon1795-21rtkit-daemon09:20:440
244049799553,32cyclictest2561355-21apt-get10:50:150
244049799543,34cyclictest2611450-21apt-get12:00:130
244049799530,29cyclictest2488856-21diskmemload12:34:370
24765722520,4sleep00-21swapper/008:35:230
244049799522,32cyclictest2600862-21apt-get11:45:150
244049799522,31cyclictest2590197-21apt-get11:30:120
244049799520,34cyclictest2514241-21apt-get09:45:270
179699520,4rtkit-daemon1795-21rtkit-daemon11:27:520
25647002510,4sleep10-21swapper/110:54:551
244049799511,35cyclictest2488856-21diskmemload10:03:120
2440497995113,26cyclictest2611067-21sh11:59:480
2440497995111,20cyclictest2573415-21sh11:05:360
244049799510,28cyclictest2488856-21diskmemload10:35:170
244049799502,25cyclictest2597145-21apt-get11:40:120
244049799501,33cyclictest2582404-21apt-get11:20:080
244049799501,32cyclictest2451391-21apt-get07:35:110
2440497995012,21cyclictest2638682-21sh12:38:320
244049799497,26cyclictest2488856-21diskmemload09:27:180
244049799492,28cyclictest2540212-21apt-get10:20:130
244049799491,31cyclictest2575643-21apt-get11:10:120
244049799491,31cyclictest2519067-21apt-get09:50:120
179699490,3rtkit-daemon1795-21rtkit-daemon12:22:210
179699490,3rtkit-daemon1795-21rtkit-daemon07:46:390
179699490,3rtkit-daemon1795-21rtkit-daemon07:32:120
179699490,3rtkit-daemon1795-21rtkit-daemon07:27:450
24703812480,1chrt2470380-21/usr/sbin/munin08:20:200
244049799489,20cyclictest2621708-21sh12:14:530
244049799486,22cyclictest2533426-21ls10:10:150
244049799481,31cyclictest2488856-21diskmemload10:55:170
244049799481,31cyclictest2488856-21diskmemload10:43:420
244049799481,29cyclictest2622029-21apt-get12:15:140
244049799480,32cyclictest2488856-21diskmemload10:32:520
244049799480,31cyclictest2459676-21apt-get07:55:100
244049799480,25cyclictest2492889-21apt-get09:15:130
244049799480,25cyclictest2488856-21diskmemload10:45:450
179699480,3rtkit-daemon1795-21rtkit-daemon09:01:340
179699480,3rtkit-daemon1795-21rtkit-daemon07:42:030
244049799479,21cyclictest2466154-21expr08:10:190
244049799476,22cyclictest2467703-21seq08:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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