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2026-04-06 - 16:56
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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 Apr 06, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
567421040,7sleep0171rcuc/007:39:100
26621210119,33sleep10-21swapper/107:06:421
26903210014,38sleep00-21swapper/007:09:130
34932820,12chrt151rcu_preempt10:35:241
27115997858,13cyclictest26-21ksoftirqd/109:15:111
942727610,42sleep014-21ksoftirqd/007:50:120
942727610,42sleep014-21ksoftirqd/007:50:120
27115997531,37cyclictest26-21ksoftirqd/110:13:421
27113996738,24cyclictest14-21ksoftirqd/012:30:010
2711599664,57cyclictest20858-21sshd08:20:261
2711399665,54cyclictest10629-21apt-get09:25:130
27115996522,38cyclictest26-21ksoftirqd/110:06:511
2711399657,16cyclictest0-21swapper/010:05:240
2711399656,17cyclictest0-21swapper/009:50:130
2711399656,17cyclictest0-21swapper/007:25:130
2711399655,19cyclictest6582-21apt-get10:45:150
27115996413,37cyclictest26-21ksoftirqd/111:28:011
27113996439,19cyclictest14-21ksoftirqd/012:35:270
27113996428,15cyclictest14-21ksoftirqd/008:40:000
27113996422,37cyclictest14-21ksoftirqd/011:05:010
27115996219,29cyclictest26-21ksoftirqd/107:49:271
2711399626,49cyclictest27197-21apt-get07:10:110
27115996136,9cyclictest26-21ksoftirqd/108:10:201
27115996119,37cyclictest26-21ksoftirqd/108:00:341
27115996114,42cyclictest0-21swapper/111:41:051
27115996113,36cyclictest26-21ksoftirqd/111:47:041
27115996110,30cyclictest14113-21taskset09:35:111
27113996134,22cyclictest14-21ksoftirqd/012:15:260
27113996131,25cyclictest14-21ksoftirqd/010:50:220
242712610,5sleep10-21swapper/111:35:011
27115996037,8cyclictest26-21ksoftirqd/110:41:151
27115996014,41cyclictest2-21kthreadd08:26:551
27115996013,42cyclictest0-21swapper/109:55:211
27115996012,42cyclictest0-21swapper/110:15:471
27113996026,18cyclictest14-21ksoftirqd/008:45:300
2711599599,36cyclictest26-21ksoftirqd/109:33:471
27115995937,8cyclictest26-21ksoftirqd/109:21:151
27115995936,8cyclictest26-21ksoftirqd/109:11:211
27115995935,9cyclictest26-21ksoftirqd/112:20:411
27115995935,9cyclictest26-21ksoftirqd/109:49:231
2711399596,16cyclictest0-21swapper/007:15:110
27113995942,10cyclictest14-21ksoftirqd/007:30:120
27113995935,18cyclictest14-21ksoftirqd/011:15:390
27113995935,18cyclictest14-21ksoftirqd/008:09:510
27113995926,18cyclictest14-21ksoftirqd/009:10:110
27113995926,13cyclictest14-21ksoftirqd/012:35:010
27115995835,9cyclictest26-21ksoftirqd/112:32:001
27115995833,9cyclictest26-21ksoftirqd/111:05:461
2711599583,19cyclictest23865-21grep10:00:361
27115995816,37cyclictest0-21swapper/109:25:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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