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2026-05-05 - 18:52
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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 Tue May 05, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4019082275215,45sleep00-21swapper/007:08:260
4018332271211,44sleep10-21swapper/107:07:391
4959302690,5sleep10-21swapper/110:15:001
5342252640,4sleep00-21swapper/011:05:210
40214999620,28cyclictest450430-21ssh09:10:010
40214999612,39cyclictest563653-21apt-get11:45:130
40215399602,38cyclictest503523-21apt-get10:25:131
40214999601,40cyclictest476366-21apt-get09:48:070
40214999601,30cyclictest544450-21python311:20:030
40214999600,28cyclictest570948-21munin-run11:55:010
4883242590,3sleep0488322-21sendmail-mta10:02:090
40215399593,34cyclictest476794-21apt-get09:45:131
40214999591,40cyclictest458251-21apt-get09:20:410
40215399580,3cyclictest491486-21ssh10:05:551
402149995812,35cyclictest418919-21seq07:48:400
40214999580,27cyclictest406791-21sendmail-msp07:20:010
40214999571,30cyclictest450339-21diskmemload10:45:000
40214999570,41cyclictest450339-21diskmemload09:54:420
40215399562,33cyclictest525951-21apt-get10:55:121
40214999561,37cyclictest496017-21apt-get10:15:090
40214999560,40cyclictest446644-21apt-get09:00:120
40214999560,26cyclictest412789-21date07:35:010
40214999552,30cyclictest489919-21apt-get10:05:130
40214999551,30cyclictest450339-21diskmemload10:58:010
40215399543,32cyclictest511131-21apt-get10:35:121
40214999542,35cyclictest597222-21apt-get12:30:130
40214999542,30cyclictest476402-21python309:45:010
40214999541,36cyclictest431001-21apt-get08:20:130
40214999541,31cyclictest462578-21apt-get09:25:150
40214999541,30cyclictest450339-21diskmemload12:03:350
40214999541,28cyclictest556277-21apt-get11:35:120
40214999540,37cyclictest450339-21diskmemload10:35:220
40214999540,37cyclictest450339-21diskmemload10:30:180
40214999540,37cyclictest436851-21apt-get08:35:100
40215399532,33cyclictest514722-21apt-get10:40:131
40214999531,36cyclictest571181-21apt-get11:55:150
40214999531,35cyclictest454587-21apt-get09:15:120
40214999531,32cyclictest421217-21taskset07:55:160
40214999531,30cyclictest450339-21diskmemload12:25:320
40214999531,29cyclictest450339-21diskmemload12:38:100
40214999530,38cyclictest450339-21diskmemload11:15:130
40214999530,36cyclictest423179-21apt-get08:00:120
40214999530,33cyclictest532482-21ssh11:03:140
40214999530,32cyclictest579151-21ssh12:05:170
40215399520,3cyclictest454233-21ssh09:14:511
40215399520,2cyclictest450339-21diskmemload11:26:111
40214999529,27cyclictest549934-21expr11:25:250
40214999528,24cyclictest522452-21cstates10:50:150
40214999522,30cyclictest468760-21sh09:32:110
402149995216,25cyclictest450339-21diskmemload10:24:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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