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2026-04-23 - 01:07
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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 Wed Apr 22, 2026 12:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271239912418,90cyclictest0-21swapper/011:05:240
27123991127,78cyclictest0-21swapper/008:20:120
271239910642,47cyclictest14-21ksoftirqd/010:30:120
271239910355,29cyclictest0-21swapper/009:15:140
271239910210,20cyclictest0-21swapper/008:30:140
27127999410,71cyclictest5819-21diskmemload09:10:111
27123999411,58cyclictest0-21swapper/011:10:110
27123999411,58cyclictest0-21swapper/011:10:110
27123999316,54cyclictest0-21swapper/008:05:110
27123999211,54cyclictest0-21swapper/009:05:110
27123999110,57cyclictest0-21swapper/008:25:120
2652729119,26sleep00-21swapper/007:05:460
27123999011,57cyclictest0-21swapper/009:40:110
2712399899,57cyclictest0-21swapper/008:35:120
27123998910,59cyclictest0-21swapper/010:10:110
27123998811,53cyclictest0-21swapper/010:35:110
27123998619,50cyclictest0-21swapper/010:25:120
27123998610,57cyclictest0-21swapper/012:10:120
2661028643,31sleep10-21swapper/107:06:401
27123998512,53cyclictest6584-21taskset07:40:180
2712799843,12cyclictest2283-21plymouth09:00:001
27127998421,20cyclictest243-21systemd-journal08:12:341
2712399849,52cyclictest0-21swapper/009:25:120
2712799839,23cyclictest25840-21apt-get10:05:121
2712399838,53cyclictest0-21swapper/011:35:130
27123998311,47cyclictest0-21swapper/012:05:110
2712399827,57cyclictest0-21swapper/012:00:120
27127998125,22cyclictest457-21dbus-daemon08:24:591
2712399818,52cyclictest0-21swapper/012:30:130
2712399817,21cyclictest0-21swapper/011:50:130
2712399816,54cyclictest0-21swapper/011:40:130
27123998012,20cyclictest0-21swapper/011:00:140
27123998011,50cyclictest0-21swapper/007:20:130
27123998010,52cyclictest0-21swapper/007:45:240
27123998010,52cyclictest0-21swapper/007:45:240
2712799798,25cyclictest7260-21apt-get12:15:111
27127997924,21cyclictest15856-21cron12:40:001
27127997920,22cyclictest457-21dbus-daemon09:30:001
2712399799,36cyclictest7421-21aten2.4-expect12:15:160
27123997917,45cyclictest0-21swapper/010:05:110
27123997916,46cyclictest0-21swapper/010:55:140
2712399787,53cyclictest0-21swapper/010:15:220
2712399787,50cyclictest0-21swapper/010:40:130
27123997811,50cyclictest0-21swapper/011:30:130
2712399777,53cyclictest0-21swapper/007:15:120
27123997719,25cyclictest29904-21tr08:45:170
2712799769,31cyclictest24102-21apt-get10:00:151
2712799768,22cyclictest27395-21apt-get11:40:151
2712399758,50cyclictest0-21swapper/010:00:240
2712399758,50cyclictest0-21swapper/008:40:240
2712799748,22cyclictest6045-21apt-get10:40:151
2712799747,28cyclictest32609-21apt-get11:55:151
2712799738,24cyclictest20300-21apt-get09:50:221
2712799732,42cyclictest32431-21cron11:55:001
27127997310,22cyclictest25784-21apt-get08:35:151
27123997313,24cyclictest829-21chrt07:25:140
27123997311,44cyclictest0-21swapper/007:50:110
2712399706,49cyclictest0-21swapper/010:50:130
27123997029,25cyclictest0-21swapper/012:25:120
27123997017,20cyclictest32609-21apt-get11:55:120
2712799698,21cyclictest22041-21apt-get09:55:141
2712799695,25cyclictest22305-21apt-get08:25:151
2712399697,48cyclictest0-21swapper/007:10:230
27123996924,29cyclictest0-21swapper/007:30:110
27123996924,21cyclictest5729-31find07:37:300
27123996923,31cyclictest0-21swapper/009:00:120
27123996920,35cyclictest0-21swapper/012:35:100
2712799688,17cyclictest748-21apt-get10:25:121
27123996819,20cyclictest14547-21turbostat09:35:000
27123996817,27cyclictest23638-21sendmail10:00:010
2712799679,52cyclictest0-21swapper/110:45:311
2712799678,20cyclictest9487-21apt-get09:20:121
27123996721,34cyclictest0-21swapper/009:10:130
27123996720,22cyclictest15740-21unixbench-2d09:35:360
27123996719,20cyclictest18639-21apt08:15:010
27123996717,25cyclictest10541-21taskset09:20:350
2712799666,17cyclictest7726-21apt-get09:15:141
27123996618,19cyclictest19831-21apt-get09:50:000
27123996615,39cyclictest0-21swapper/008:50:140
27123996613,28cyclictest18592-21/usr/sbin/munin11:15:240
2712399654,42cyclictest0-21swapper/008:00:170
27123996517,24cyclictest562-21runrttasks11:25:190
27123996517,24cyclictest21864-21cron09:55:000
27123996517,24cyclictest1168-21/usr/sbin/munin08:55:250
27123996517,20cyclictest20379-21munin-run08:20:000
27123996513,27cyclictest29467-21taskset11:45:180
27127996438,18cyclictest26987-21apt-get07:10:131
27123996418,25cyclictest8699-21grep10:45:340
27123996418,24cyclictest21392-21sed11:20:360
27123996414,26cyclictest12689-21find07:55:340
2712799637,30cyclictest6249-21apt-get07:40:121
27123996317,19cyclictest464-21avahi-daemon12:25:000
27123996315,19cyclictest574-21munin-run10:25:010
27127996213,43cyclictest0-21swapper/109:05:261
2712799597,18cyclictest13538-21apt-get08:00:131
2712799594,47cyclictest14600-21apt-get11:05:131
27127995910,44cyclictest0-21swapper/108:45:281
2712799576,45cyclictest0-21swapper/108:30:251
27127995740,11cyclictest0-21swapper/110:54:181
2712799573,47cyclictest13301-21wc12:30:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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