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2026-09-15 - 01:03
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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 Mon Sep 14, 2026 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
152859911912,96cyclictest0-21swapper/011:25:110
152859911273,29cyclictest14-21ksoftirqd/008:15:130
152859911210,89cyclictest0-21swapper/009:05:120
152859911013,86cyclictest0-21swapper/010:20:220
152859910871,26cyclictest0-21swapper/009:15:140
15289991068,28cyclictest2335-21kworker/1:110:00:121
3171921010,6chrt31720-21grep12:25:010
152859910112,24cyclictest0-21swapper/011:05:140
152859910112,24cyclictest0-21swapper/011:05:140
152899910063,24cyclictest26-21ksoftirqd/110:10:111
152859910052,36cyclictest14-21ksoftirqd/012:15:140
152859910050,36cyclictest14-21ksoftirqd/011:50:110
15289999966,21cyclictest26-21ksoftirqd/111:35:141
1479229916,38sleep00-21swapper/007:06:410
15289999838,48cyclictest26-21ksoftirqd/109:30:141
15285999842,42cyclictest14-21ksoftirqd/012:30:250
56172970,6chrt5616-21/usr/sbin/munin11:10:171
15289999662,23cyclictest26-21ksoftirqd/107:30:121
15285999645,32cyclictest14-21ksoftirqd/012:10:230
15289999558,25cyclictest0-21swapper/111:40:151
15289999554,31cyclictest26-21ksoftirqd/109:20:251
15285999548,31cyclictest14-21ksoftirqd/011:55:150
15285999441,33cyclictest14-21ksoftirqd/008:55:120
15285999410,65cyclictest0-21swapper/012:00:110
15285999237,37cyclictest14-21ksoftirqd/010:30:120
15285999212,61cyclictest0-21swapper/011:40:140
15285999211,62cyclictest0-21swapper/009:20:240
15289999112,67cyclictest0-21swapper/107:55:151
1528599906,60cyclictest3231-21seq12:35:120
15285999032,38cyclictest14-21ksoftirqd/007:15:150
15289998942,37cyclictest26-21ksoftirqd/108:00:231
15285998912,59cyclictest0-21swapper/007:10:140
15289998832,40cyclictest4935-21sshd08:10:121
1528599885,56cyclictest13653-21seq08:35:130
1528599885,56cyclictest13653-21seq08:35:130
15289998716,58cyclictest0-21swapper/108:30:121
15289998714,60cyclictest0-21swapper/112:30:241
15289998713,61cyclictest0-21swapper/108:50:121
15289998712,63cyclictest0-21swapper/109:45:231
15289998712,63cyclictest0-21swapper/107:50:151
15289998712,60cyclictest0-21swapper/111:15:131
15289998711,63cyclictest0-21swapper/109:10:151
15289998615,60cyclictest0-21swapper/110:45:111
15289998615,60cyclictest0-21swapper/107:20:121
15289998613,61cyclictest0-21swapper/111:45:131
15289998612,62cyclictest0-21swapper/111:00:151
15289998612,61cyclictest0-21swapper/108:20:131
15289998612,61cyclictest0-21swapper/108:20:131
1528599869,57cyclictest0-21swapper/008:45:110
1528599869,53cyclictest503-21snmpd09:55:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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