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2026-08-01 - 16:34
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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 Sat Aug 01, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
75439910368,24cyclictest18061-21diskmemload09:10:120
7543999969,20cyclictest0-21swapper/012:15:160
7543999966,19cyclictest14-21ksoftirqd/011:20:140
754399986,79cyclictest23260-21apt-get12:25:170
7543999567,18cyclictest14-21ksoftirqd/009:50:140
7543999567,16cyclictest14-21ksoftirqd/008:50:130
7543999463,20cyclictest14-21ksoftirqd/008:15:150
7543999263,18cyclictest14-21ksoftirqd/010:40:260
7543999262,19cyclictest14-21ksoftirqd/009:00:130
7543999262,19cyclictest14-21ksoftirqd/009:00:130
7543999166,15cyclictest14-21ksoftirqd/011:55:150
7543999163,17cyclictest14-21ksoftirqd/007:35:140
7543999065,17cyclictest14-21ksoftirqd/011:10:180
7543999065,17cyclictest14-21ksoftirqd/011:10:180
7543999061,16cyclictest14-21ksoftirqd/010:55:160
7543998858,20cyclictest14-21ksoftirqd/007:15:120
7543998754,18cyclictest14-21ksoftirqd/012:00:260
7543998554,19cyclictest14-21ksoftirqd/007:10:120
7543998552,19cyclictest14-21ksoftirqd/008:55:140
754399846,69cyclictest11957-21apt-get07:20:260
7543998451,19cyclictest14-21ksoftirqd/010:30:150
7543998351,21cyclictest14-21ksoftirqd/007:45:130
755099827,20cyclictest0-21swapper/109:25:241
7550998230,15cyclictest26-21ksoftirqd/111:55:011
7543998251,21cyclictest14-21ksoftirqd/008:45:120
7543998250,22cyclictest14-21ksoftirqd/009:40:120
7543998152,20cyclictest14-21ksoftirqd/010:15:130
7543998113,54cyclictest0-21swapper/011:25:130
7543998015,52cyclictest0-21swapper/011:35:130
7543998013,56cyclictest0-21swapper/011:15:130
7543997916,49cyclictest0-21swapper/010:00:140
754399787,56cyclictest16182-21apt-get10:35:150
754399787,56cyclictest16182-21apt-get10:35:150
714727825,42sleep10-21swapper/107:07:381
592427831,34sleep00-21swapper/007:05:150
755099779,52cyclictest0-21swapper/109:20:121
755099779,51cyclictest0-21swapper/110:05:121
754399773,66cyclictest12517-21cron10:25:000
7543997719,45cyclictest0-21swapper/009:30:120
7543997714,50cyclictest0-21swapper/010:50:150
7543997714,50cyclictest0-21swapper/009:15:150
7550997611,33cyclictest29516-21cat08:10:011
754399764,49cyclictest0-21swapper/009:58:070
7543997614,49cyclictest0-21swapper/009:05:120
7543997613,52cyclictest0-21swapper/008:40:130
7543997612,50cyclictest0-21swapper/008:30:140
754399758,54cyclictest21517-21apt-get12:20:150
754399756,56cyclictest2437-21apt-get08:25:140
754399754,62cyclictest0-21swapper/010:05:070
754399753,66cyclictest13832-21users10:25:380
754399753,65cyclictest7719-21sort10:10:200
7543997512,51cyclictest0-21swapper/008:35:130
754399743,44cyclictest23783-21/usr/sbin/munin09:25:120
7543997415,46cyclictest0-21swapper/008:00:140
7543997413,50cyclictest0-21swapper/011:40:130
7543997412,50cyclictest0-21swapper/011:00:130
7543997412,50cyclictest0-21swapper/008:10:150
7543997412,49cyclictest0-21swapper/007:55:120
755099737,14cyclictest0-21swapper/111:40:141
7550997315,20cyclictest251rcuc/107:35:011
7550997314,19cyclictest251rcuc/110:50:001
754399736,55cyclictest10683-21apt-get11:50:120
754399735,55cyclictest13697-21apt-get07:25:130
754399733,61cyclictest24995-21apt-get12:30:120
7543997314,46cyclictest0-21swapper/007:30:140
7543997313,51cyclictest19290-21aten2.4-expect07:40:200
7543997312,51cyclictest0-21swapper/008:05:140
7543997310,52cyclictest0-21swapper/011:05:130
754399723,61cyclictest503-21snmpd09:20:170
7543997216,43cyclictest0-21swapper/011:30:130
7543997212,49cyclictest0-21swapper/010:45:140
7550997130,23cyclictest26-21ksoftirqd/107:15:011
7550997127,13cyclictest26-21ksoftirqd/107:36:231
7550997110,47cyclictest0-21swapper/109:35:241
754399715,60cyclictest0-21swapper/012:05:300
754399715,60cyclictest0-21swapper/012:05:300
754399714,58cyclictest851-21aten2.4-expect08:20:160
754399714,56cyclictest27096-21apt-get09:35:150
7543997142,18cyclictest14-21ksoftirqd/009:45:120
754399712,63cyclictest27709-21timerwakeupswit12:35:360
7543997113,45cyclictest0-21swapper/012:10:130
7550997028,14cyclictest26-21ksoftirqd/112:05:001
7550997024,14cyclictest26-21ksoftirqd/110:40:051
754399707,50cyclictest22601-21apt-get07:50:150
754399703,61cyclictest243-21systemd-journal11:48:290
755099696,49cyclictest0-21swapper/107:40:161
755099686,18cyclictest0-21swapper/108:20:111
755099676,47cyclictest0-21swapper/107:55:121
7550996714,20cyclictest251rcuc/107:30:011
7550996615,46cyclictest0-21swapper/110:10:201
7550996614,46cyclictest251rcuc/111:38:591
7550996611,19cyclictest251rcuc/109:00:001
755099659,14cyclictest26-21ksoftirqd/112:39:001
755099658,14cyclictest26-21ksoftirqd/107:50:001
7550996515,19cyclictest251rcuc/108:45:191
7550996514,45cyclictest251rcuc/111:25:001
7550996514,45cyclictest251rcuc/107:55:011
7550996513,19cyclictest251rcuc/108:10:311
755099648,23cyclictest26-21ksoftirqd/108:00:281
7550996427,14cyclictest26-21ksoftirqd/109:15:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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