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2026-04-03 - 16:00
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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 Fri Apr 03, 2026 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
171289911281,21cyclictest26-21ksoftirqd/109:45:131
16960211230,26sleep10-21swapper/107:09:431
171289910470,20cyclictest26-21ksoftirqd/108:00:141
171289910270,21cyclictest26-21ksoftirqd/108:45:111
171289910268,19cyclictest26-21ksoftirqd/111:25:141
171289910068,20cyclictest26-21ksoftirqd/108:25:131
171289910068,20cyclictest26-21ksoftirqd/108:25:131
17128999761,22cyclictest26-21ksoftirqd/111:00:261
17128999761,22cyclictest26-21ksoftirqd/109:00:151
155022960,5chrt36-21kcompactd008:35:161
17128999358,23cyclictest26-21ksoftirqd/112:05:141
17128999257,21cyclictest26-21ksoftirqd/107:25:121
17128999254,24cyclictest26-21ksoftirqd/108:10:141
17128999245,34cyclictest503-21snmpd11:40:161
17128999165,15cyclictest26-21ksoftirqd/109:50:231
17128999156,22cyclictest26-21ksoftirqd/107:20:121
17128999132,24cyclictest0-21swapper/111:35:111
17128999132,24cyclictest0-21swapper/111:35:111
17128999063,17cyclictest26-21ksoftirqd/108:55:131
17128999051,26cyclictest26-21ksoftirqd/110:05:171
17128998958,20cyclictest26-21ksoftirqd/111:45:101
17128998954,23cyclictest26-21ksoftirqd/109:35:141
17128998953,23cyclictest26-21ksoftirqd/107:30:111
17128998949,28cyclictest26-21ksoftirqd/110:35:141
17128998854,22cyclictest26-21ksoftirqd/111:20:151
17128998850,25cyclictest26-21ksoftirqd/110:50:121
17128998759,17cyclictest26-21ksoftirqd/111:05:111
17128998759,17cyclictest26-21ksoftirqd/109:25:111
17128998755,20cyclictest26-21ksoftirqd/109:30:151
17128998750,23cyclictest26-21ksoftirqd/107:55:111
17128998651,23cyclictest26-21ksoftirqd/112:35:221
17128998647,27cyclictest26-21ksoftirqd/108:20:141
17128998546,26cyclictest26-21ksoftirqd/110:45:141
17122998514,20cyclictest0-21swapper/011:30:130
17128998445,27cyclictest26-21ksoftirqd/110:30:211
17128998445,26cyclictest26-21ksoftirqd/112:30:131
17128998445,26cyclictest26-21ksoftirqd/112:10:141
17128998428,44cyclictest0-21swapper/109:20:141
17128998428,44cyclictest0-21swapper/109:20:141
17128998349,22cyclictest26-21ksoftirqd/108:30:111
17128998310,58cyclictest27645-21diskmemload09:10:151
17128998310,57cyclictest910-21sendmail-mta12:20:131
17128998241,28cyclictest26-21ksoftirqd/107:40:141
1712899818,58cyclictest16744-21chrt10:10:161
17128998139,31cyclictest26-21ksoftirqd/112:15:121
17128998113,55cyclictest0-21swapper/110:00:141
17128998010,58cyclictest0-21swapper/109:15:141
17128997941,26cyclictest26-21ksoftirqd/112:00:111
17128997939,27cyclictest26-21ksoftirqd/111:15:101
17128997939,27cyclictest26-21ksoftirqd/111:15:101
17128997936,30cyclictest26-21ksoftirqd/111:10:131
17128997814,53cyclictest0-21swapper/108:15:111
17128997814,52cyclictest0-21swapper/111:30:121
17128997714,52cyclictest0-21swapper/108:05:111
17128997711,54cyclictest0-21swapper/107:50:111
17128997614,52cyclictest0-21swapper/110:55:131
17128997613,51cyclictest0-21swapper/108:50:141
17128997612,50cyclictest0-21swapper/110:20:121
17128997612,50cyclictest0-21swapper/109:40:141
17128997514,49cyclictest0-21swapper/112:25:151
17128997513,49cyclictest0-21swapper/111:55:111
17128997512,54cyclictest0-21swapper/107:35:111
1677227518,49sleep00-21swapper/007:08:130
17128997415,48cyclictest0-21swapper/111:50:131
17128997413,51cyclictest0-21swapper/108:40:121
17128997413,51cyclictest0-21swapper/107:15:111
17128997413,49cyclictest0-21swapper/110:40:121
17128997412,49cyclictest0-21swapper/109:05:131
17128997312,48cyclictest0-21swapper/110:25:131
17128997311,48cyclictest0-21swapper/109:55:141
1712299736,56cyclictest28395-21apt-get07:40:140
17122997134,30cyclictest14-21ksoftirqd/009:50:130
17128996819,31cyclictest0-21swapper/107:45:111
17122996810,34cyclictest14-21ksoftirqd/010:10:130
17128996717,22cyclictest562-21runrttasks07:10:211
17122996731,22cyclictest14-21ksoftirqd/010:15:170
17122996727,12cyclictest14-21ksoftirqd/007:37:240
1712299667,20cyclictest2378-21apt-get09:30:150
17122996637,23cyclictest14-21ksoftirqd/008:30:010
17122996637,23cyclictest14-21ksoftirqd/008:30:010
17122996637,12cyclictest14-21ksoftirqd/009:49:040
17128996513,19cyclictest19128-21head10:15:261
1712299657,19cyclictest23474-21apt-get12:00:120
17122996532,28cyclictest14-21ksoftirqd/008:16:080
17122996518,34cyclictest0-21swapper/008:50:120
1712299647,50cyclictest9461-21apt-get11:20:120
1712299646,20cyclictest25768-21apt-get10:35:140
17122996440,17cyclictest14-21ksoftirqd/010:00:160
17122996436,22cyclictest14-21ksoftirqd/009:40:230
17122996435,22cyclictest14-21ksoftirqd/010:40:100
17122996348,9cyclictest14-21ksoftirqd/011:05:110
17122996330,27cyclictest503-21snmpd10:54:480
1712299625,49cyclictest30135-21apt-get07:45:120
17122996233,17cyclictest14-21ksoftirqd/008:30:210
17122996232,17cyclictest14-21ksoftirqd/012:35:120
17122996221,36cyclictest29313-21/usr/sbin/munin10:45:360
17122996215,30cyclictest503-21snmpd11:50:010
17122996214,29cyclictest0-21swapper/009:35:120
17122996214,29cyclictest0-21swapper/009:15:120
17122996213,30cyclictest0-21swapper/009:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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