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2025-12-03 - 00:51
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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 100 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
1967999775,54cyclictest22840-21apt-get11:50:130
1967999773,11cyclictest504-21snmpd11:50:010
1968599768,16cyclictest0-21swapper/109:50:351
1968599767,20cyclictest21098-21apt-get11:45:131
1968599767,19cyclictest27276-21apt-get07:30:141
1968599767,19cyclictest24847-21apt-get10:25:161
1968599766,22cyclictest29867-21apt-get12:10:161
1968599766,22cyclictest19360-21apt-get11:40:181
1968599766,19cyclictest27150-21apt-get09:00:151
1968599765,11cyclictest0-21swapper/111:15:221
1967999767,61cyclictest0-21swapper/012:30:120
1967999764,58cyclictest23791-21apt-get07:20:130
1968599757,19cyclictest25529-21apt-get07:25:141
1968599756,23cyclictest3759-21apt-get07:55:211
1968599756,21cyclictest14004-21apt-get09:55:121
1968599756,20cyclictest28328-21apt-get10:35:151
1968599756,19cyclictest26584-21apt-get10:30:131
1968599756,19cyclictest26584-21apt-get10:30:121
1968599756,19cyclictest1755-21apt-get09:20:121
19685997521,19cyclictest448-21dbus-daemon12:00:011
19685997514,47cyclictest0-21swapper/109:05:141
1967999757,57cyclictest0-21swapper/008:15:110
1967999757,56cyclictest0-21swapper/008:20:230
1967999755,60cyclictest17806-21apt-get10:05:240
1967999752,67cyclictest8364-21runrttasks09:38:080
1967999752,67cyclictest8364-21runrttasks09:38:070
1968599747,23cyclictest4418-21apt-get12:30:121
1968599747,19cyclictest10528-21apt-get09:45:141
1968599746,20cyclictest21918-21apt-get08:45:161
1968599746,19cyclictest12325-21apt-get11:20:231
1968599744,20cyclictest20711-21grep08:40:261
1968599743,24cyclictest10492-21latency_hist09:45:011
1967999747,59cyclictest0-21swapper/009:25:130
1967999747,57cyclictest0-21swapper/008:10:160
1967999746,59cyclictest0-21swapper/010:50:140
1967999746,59cyclictest0-21swapper/009:55:120
1967999745,61cyclictest0-21swapper/008:35:140
1967999743,63cyclictest30956-21apt-get07:40:150
19679997435,24cyclictest29778-21needreboot07:35:340
1967999743,10cyclictest20913-21users07:10:370
19679997410,53cyclictest0-21swapper/012:20:140
1968599736,18cyclictest2674-21apt-get12:25:141
1968599735,20cyclictest19602-21apt-get10:10:151
1967999736,59cyclictest0-21swapper/012:25:150
1967999736,59cyclictest0-21swapper/007:45:140
1967999736,58cyclictest0-21swapper/012:05:170
1967999736,58cyclictest0-21swapper/010:25:150
1967999736,58cyclictest0-21swapper/009:20:120
1967999736,49cyclictest3235-21apt-get10:55:130
1967999735,52cyclictest32422-21apt-get09:15:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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