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2025-11-16 - 01:58
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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 Nov 15, 2025 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13746122268226,27sleep10-21swapper/107:05:061
13759682249181,52sleep00-21swapper/007:05:440
137650699642,42cyclictest1550094-21apt-get11:50:161
137650699622,41cyclictest1526467-21apt-get11:20:131
1376506995814,22cyclictest1436884-21sh09:22:191
137650699572,38cyclictest1561156-21apt-get12:05:121
137650699571,32cyclictest1427692-21grep09:10:251
137650699561,31cyclictest1488131-21apt-get10:30:141
137650699560,4cyclictest1457521-21python309:50:021
137650699552,4cyclictest1442180-21apt-get09:30:151
137650699551,9cyclictest1482334-21ssh10:21:011
137650699542,36cyclictest1397773-21apt-get08:00:131
137650699540,5cyclictest1579943-21pmu-power12:30:251
137650699532,36cyclictest1407963-21apt-get08:25:131
1376506995311,31cyclictest1494094-21sh10:37:051
1376506995311,30cyclictest1381917-21open_files07:20:241
1376506995210,31cyclictest1569823-21sh12:15:361
137650699520,3cyclictest1382877-21apt-get07:25:261
125899520,4rtkit-daemon1257-21rtkit-daemon09:38:561
137650699517,24cyclictest1519436-21memory11:10:221
137650699514,4cyclictest1530398-21apt-get11:25:151
137650699510,6cyclictest1502411-21sh10:48:451
137650699510,3cyclictest1544597-21rm11:42:021
137650699505,31cyclictest0-21swapper/107:50:231
137650699502,34cyclictest1402086-21apt-get08:10:141
137650699501,9cyclictest1541265-21ssh11:38:421
137650699501,5cyclictest1461796-21apt-get09:55:161
137650699501,4cyclictest1454527-21ntp_states09:45:221
137650699501,37cyclictest1507927-21ssh10:55:211
1376506995010,28cyclictest1426204-21diskmemload11:01:541
137650699500,6cyclictest1554571-21taskset11:55:251
137650699500,3cyclictest1582628-21apt-get12:35:171
137650699500,3cyclictest1523567-21mailstats11:15:241
125899500,4rtkit-daemon1257-21rtkit-daemon07:41:041
137650699497,27cyclictest1573309-21sh12:20:351
137650699492,6cyclictest1430551-21apt-get09:15:171
137650699491,5cyclictest1497142-21ssh10:40:391
137650699491,36cyclictest1452613-21ssh09:43:071
137650699490,2cyclictest0-21swapper/107:57:091
14604922480,2sleep01460494-21sh09:52:550
137650699488,29cyclictest0-21swapper/111:46:371
137650699485,26cyclictest0-21swapper/112:25:041
137650699481,4cyclictest1411869-21apt-get08:35:141
137650699481,34cyclictest1426204-21diskmemload11:33:521
137650699480,8cyclictest1475776-21ssh10:13:141
137650699480,7cyclictest1560378-21ssh12:03:481
137650699480,33cyclictest287-20systemd-journal08:35:001
125899480,4rtkit-daemon1257-21rtkit-daemon12:26:000
137650699472,3cyclictest13766102chrt07:10:091
137650699472,34cyclictest1391492-21apt-get07:45:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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