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2025-12-02 - 14:43
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6.osadl.org (updated Tue Dec 02, 2025 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19685999642,49cyclictest26-21ksoftirqd/110:40:121
1952729123,19sleep10-21swapper/107:09:441
19685999018,63cyclictest0-21swapper/110:00:131
19685998815,67cyclictest30505-21diskmemload09:10:161
1968599877,28cyclictest31601-21apt-get12:15:121
19685998717,62cyclictest0-21swapper/111:50:141
19685998615,57cyclictest0-21swapper/110:05:231
1795528626,49sleep00-21swapper/007:05:140
1968599856,23cyclictest26335-21apt-get12:00:111
1968599846,25cyclictest5508-21apt-get08:00:121
19685998416,62cyclictest0-21swapper/109:15:141
19685998413,64cyclictest0-21swapper/110:55:161
19679998423,54cyclictest25688-21aten2.4-expect07:25:170
1968599837,24cyclictest938-21apt-get12:20:141
1968599837,24cyclictest3500-21apt-get09:25:141
1968599837,24cyclictest2003-21apt-get07:50:111
19685998315,59cyclictest0-21swapper/112:38:411
19685998312,64cyclictest0-21swapper/111:35:131
19685998214,59cyclictest0-21swapper/111:30:141
19685998212,61cyclictest0-21swapper/107:20:121
1967999827,57cyclictest15766-21apt-get10:00:120
1968599816,24cyclictest14876-21apt-get08:25:221
19685998118,24cyclictest14418-21cat11:25:221
1968599807,26cyclictest22026-21apt-get07:15:131
1968599806,24cyclictest23107-21apt-get10:20:121
1968599806,22cyclictest1492-21apt-get10:50:141
1968599806,20cyclictest6979-21apt-get09:35:151
1968599806,20cyclictest6979-21apt-get09:35:151
19685998013,51cyclictest29140-31find07:35:181
19685998012,63cyclictest0-21swapper/110:45:231
1968599798,23cyclictest12839-21apt-get08:20:231
1968599798,21cyclictest7252-21apt-get08:05:171
1968599797,25cyclictest6735-21apt-get11:05:141
1968599797,19cyclictest16617-21apt-get08:30:131
19685997927,19cyclictest12348-21cron08:20:001
1968599786,20cyclictest21341-21apt-get10:15:151
19685997815,58cyclictest0-21swapper/107:40:121
19685997815,56cyclictest0-21swapper/108:10:121
1967999788,64cyclictest0-21swapper/010:45:230
1967999786,61cyclictest0-21swapper/008:30:120
209152770,8chrt0-21swapper/107:10:381
1968599777,21cyclictest5240-21apt-get09:30:111
1968599776,23cyclictest25393-21apt-get08:55:171
1968599776,21cyclictest23655-21apt-get08:50:141
1968599776,19cyclictest28078-21apt-get12:05:161
19685997714,10cyclictest0-21swapper/111:00:241
1967999779,60cyclictest0-21swapper/009:00:130
1967999776,61cyclictest0-21swapper/009:30:120
1967999776,59cyclictest0-21swapper/012:00:120
1967999775,57cyclictest30684-21apt-get09:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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