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2026-08-02 - 09:23
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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 Sun Aug 02, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
42929910316,80cyclictest0-21swapper/023:15:180
42929910316,80cyclictest0-21swapper/023:15:180
42929910213,81cyclictest0-21swapper/020:05:120
4292999910,21cyclictest15282-21diskmemload21:10:130
4292999817,17cyclictest0-21swapper/000:20:130
4292999741,14cyclictest0-21swapper/023:25:110
196902950,5chrt19691-21/usr/sbin/munin21:20:291
4292999016,17cyclictest0-21swapper/020:15:160
161342900,5chrt16135-21/usr/sbin/munin19:40:241
429299862,18cyclictest20258-21diskstats00:25:210
4292998621,31cyclictest243-21systemd-journal00:17:040
309928440,27sleep10-21swapper/119:05:231
4292998314,27cyclictest0-21swapper/020:50:140
429699827,22cyclictest28279-21apt-get20:15:161
429699816,26cyclictest27752-21apt-get23:15:181
429699816,26cyclictest27752-21apt-get23:15:181
4292998113,17cyclictest0-21swapper/019:10:160
4292998013,29cyclictest0-21swapper/019:25:140
429699796,22cyclictest8124-21apt-get20:50:131
429699796,22cyclictest23926-21apt-get23:05:131
429299794,14cyclictest29294-21apt-get21:50:150
429699776,23cyclictest7603-21apt-get23:50:131
429699776,21cyclictest31253-21apt-get23:25:111
4296997725,16cyclictest30353-21sed21:50:351
429299779,16cyclictest4284-21cyclictest22:45:120
4292997713,22cyclictest13914-21apt-get19:35:150
429699767,21cyclictest18173-21apt-get00:20:131
429699765,24cyclictest24749-21apt-get20:05:121
4296997627,16cyclictest30604-21expr20:20:261
4296997622,18cyclictest20859-21cat22:55:231
4292997640,31cyclictest14-21ksoftirqd/020:41:530
4292997617,53cyclictest0-21swapper/023:05:130
429699755,36cyclictest0-21swapper/121:10:251
4296997525,15cyclictest4605-21cat19:10:191
429699745,21cyclictest10132-21apt-get19:25:141
429699742,45cyclictest26-21ksoftirqd/119:19:291
4296997422,17cyclictest1-21systemd20:45:001
4292997437,22cyclictest14-21ksoftirqd/000:00:290
411627416,49sleep00-21swapper/019:09:350
429699736,20cyclictest13442-21apt-get19:35:151
4296997329,17cyclictest26-21ksoftirqd/120:37:301
4296997328,16cyclictest32752-21sed20:25:351
4296997328,16cyclictest32752-21sed20:25:351
4296997327,17cyclictest26-21ksoftirqd/121:09:021
4296997325,16cyclictest23719-21expr00:35:191
4296997229,16cyclictest26-21ksoftirqd/122:22:321
4296997224,16cyclictest22055-21cat00:30:221
4296997224,15cyclictest2602-21hostname22:05:161
4296997026,17cyclictest26-21ksoftirqd/120:13:341
429299706,22cyclictest2577-21apt-get22:05:120
4292997035,20cyclictest14-21ksoftirqd/000:30:230
4292997034,21cyclictest14-21ksoftirqd/021:25:270
4292997032,21cyclictest14-21ksoftirqd/019:55:380
4292997014,50cyclictest0-21swapper/023:30:140
429699692,17cyclictest1984-21seq23:33:271
4296996921,19cyclictest457-21dbus-daemon22:20:001
429699689,18cyclictest26-21ksoftirqd/122:32:361
429699686,17cyclictest19914-21apt-get00:25:131
429699683,16cyclictest26-21ksoftirqd/122:43:211
4292996832,21cyclictest14-21ksoftirqd/022:50:280
4292996831,21cyclictest14-21ksoftirqd/021:15:290
4292996831,21cyclictest14-21ksoftirqd/019:40:360
4292996830,21cyclictest14-21ksoftirqd/019:45:270
4292996748,13cyclictest0-21swapper/022:25:130
4292996734,17cyclictest14-21ksoftirqd/023:00:190
4292996730,21cyclictest14-21ksoftirqd/022:30:290
4292996730,21cyclictest14-21ksoftirqd/020:45:290
4292996730,21cyclictest14-21ksoftirqd/020:45:290
4292996729,21cyclictest14-21ksoftirqd/000:10:270
4292996712,48cyclictest503-21snmpd20:20:120
4292996712,13cyclictest0-21swapper/021:20:140
4292996614,45cyclictest0-21swapper/020:30:130
4292996544,10cyclictest14-21ksoftirqd/023:55:140
4292996338,11cyclictest14-21ksoftirqd/019:15:350
4292996239,18cyclictest14-21ksoftirqd/022:00:010
4292996238,9cyclictest14-21ksoftirqd/019:20:350
4292996238,19cyclictest14-21ksoftirqd/021:05:260
4292996125,31cyclictest243-21systemd-journal21:31:180
4292996123,32cyclictest6027-21aten2.4-expect23:45:190
4292996036,9cyclictest14-21ksoftirqd/023:37:290
4292996033,13cyclictest0-21swapper/019:50:130
4292996022,33cyclictest243-21systemd-journal21:41:200
4292996021,33cyclictest11775-21aten2.4-expect21:00:160
4292995925,30cyclictest243-21systemd-journal22:21:290
4292995913,40cyclictest29401-21latency_hist21:50:020
4296995844,9cyclictest26-21ksoftirqd/100:08:391
4296995837,16cyclictest26-21ksoftirqd/100:03:081
4296995835,17cyclictest26-21ksoftirqd/123:46:431
4296995830,9cyclictest26-21ksoftirqd/121:00:121
429299583,49cyclictest455-21rs:main0
4292995823,31cyclictest243-21systemd-journal22:36:340
4292995821,31cyclictest22132-21latency_hist23:00:010
429299573,47cyclictest243-21systemd-journal20:35:150
4292995733,19cyclictest14-21ksoftirqd/023:40:300
4292995726,26cyclictest29690-21grep23:20:200
429299566,11cyclictest0-21swapper/000:05:280
4292995612,15cyclictest0-21swapper/022:40:120
4296995534,16cyclictest26-21ksoftirqd/120:58:391
4296995534,16cyclictest26-21ksoftirqd/100:00:011
429299558,42cyclictest0-21swapper/020:10:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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