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2026-08-08 - 15:02
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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 Sat Aug 08, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5155332262188,59sleep10-21swapper/119:08:511
5152352261185,20sleep00-21swapper/019:05:390
51578199523,5cyclictest658955-21apt-get23:15:131
51578199520,7cyclictest673857-21munin-run23:35:001
108999520,4rtkit-daemon1088-21rtkit-daemon23:52:001
51578199512,5cyclictest696501-21apt-get00:05:111
108999510,4rtkit-daemon1088-21rtkit-daemon23:47:401
108999510,3rtkit-daemon1088-21rtkit-daemon21:13:381
51578199503,6cyclictest599074-21apt-get21:55:131
51578199502,7cyclictest655352-21apt-get23:10:131
108999500,4rtkit-daemon1088-21rtkit-daemon21:23:561
108999500,4rtkit-daemon1088-21rtkit-daemon20:51:121
108999500,4rtkit-daemon1088-21rtkit-daemon19:47:130
51578199492,34cyclictest515898-21/usr/sbin/munin19:10:151
51578199492,33cyclictest583908-21apt-get21:35:141
51578199492,33cyclictest583908-21apt-get21:35:141
51578199491,11cyclictest569156-21df21:15:141
108999490,4rtkit-daemon1088-21rtkit-daemon22:17:150
51578199481,10cyclictest536180-21apt-get20:00:091
51578199476,7cyclictest26-21ksoftirqd/122:45:121
51578199471,35cyclictest597302-21ssh21:51:491
51578199452,5cyclictest614048-21apt-get22:15:141
51578199451,5cyclictest531046-21ntp_states19:45:221
51578199451,4cyclictest587769-21apt-get21:40:121
6715862440,5sleep0671584-21awk23:30:220
6216762440,4sleep10-21swapper/122:25:131
51578199449,2cyclictest653016-21ssh23:05:331
51578199442,5cyclictest545841-21python320:25:021
51578199442,4cyclictest580052-21apt-get21:30:121
51578199441,4cyclictest714228-21apt-get00:30:141
51578199440,8cyclictest628726-21ssh22:34:541
51578199432,4cyclictest633062-21apt-get22:40:121
51578199431,9cyclictest534199-21apt-get19:55:101
51578199431,4cyclictest663123-21apt-get23:20:121
51578199430,4cyclictest666866-21apt-get23:25:101
51578199422,4cyclictest610181-21apt-get22:10:121
51578199421,8cyclictest553136-21apt-get20:40:111
51578199421,3cyclictest717970-21apt-get00:35:141
51578199421,3cyclictest591349-21apt-get21:45:131
51578199420,9cyclictest522407-21apt-get19:25:101
51578199420,8cyclictest712893-21ssh00:27:361
51578199420,8cyclictest617734-21apt-get22:20:121
108999420,4rtkit-daemon550542-21apt-get20:35:040
108999420,4rtkit-daemon1088-21rtkit-daemon22:54:470
5487602410,4chrt0-21swapper/020:30:040
51578199411,7cyclictest700066-21apt-get00:10:101
51578199410,8cyclictest705989-21ssh00:19:551
51578199410,8cyclictest561343-21perl21:00:171
51578199410,8cyclictest552219-21find20:35:251
51578199401,4cyclictest688855-21apt-get23:55:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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