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2026-08-23 - 22:18
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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
Characteristics of the 50 highest latencies:
System rackdslot0.osadl.org (updated Sun Aug 23, 2026 12:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
621992414,6cyclictest0-21swapper/111:50:001
621992313,9cyclictest25904-21sshd08:50:141
621992312,7cyclictest15039-21chrt07:35:111
62199231,21cyclictest3450-21gsd-color10:10:191
621992311,7cyclictest9453-21chrt09:17:551
62199230,2cyclictest3746-21nfsd408:10:171
62199230,1cyclictest9603-21apt-get07:25:121
62199221,1cyclictest0-21swapper/110:01:081
62199220,2cyclictest25662-21sed12:38:591
62199220,2cyclictest16096-21uname12:20:161
62199220,2cyclictest13043-21expr11:20:131
62199220,21cyclictest23840-21nfsd408:45:181
62199220,21cyclictest18809-21tr09:35:141
62199220,21cyclictest0-21swapper/111:40:181
62199220,16cyclictest26816-21cat09:50:011
62199220,16cyclictest25727-21perf07:55:001
62199220,15cyclictest0-21swapper/110:25:171
61699227,14cyclictest0-21swapper/010:46:030
621992114,6cyclictest9544-21pzem_current08:20:211
621992114,6cyclictest7860-21sort08:20:011
621992114,6cyclictest26814-21grep10:45:181
621992114,6cyclictest0-21swapper/111:30:201
62199210,2cyclictest27567-21ls09:50:131
62199210,2cyclictest15956-21chrt09:30:121
62199210,20cyclictest0-21swapper/111:25:141
62199210,1cyclictest0-21swapper/111:10:151
62199210,1cyclictest0-21swapper/110:30:141
62199210,1cyclictest0-21swapper/110:15:221
62199210,1cyclictest0-21swapper/109:55:171
62199210,16cyclictest8572-21timerandwakeup12:05:231
62199210,16cyclictest22224-21chrt10:39:401
62199210,0cyclictest0-21swapper/107:10:461
61699210,20cyclictest843-21systemd-network12:14:370
621992014,5cyclictest22681-21/usr/sbin/munin10:40:211
621992014,5cyclictest15002-21sendmail-mta09:28:401
621992014,5cyclictest10201-21expr12:10:141
621992014,5cyclictest0-21swapper/107:20:181
621992013,6cyclictest0-21swapper/109:00:151
62199200,2cyclictest22261-21cat11:35:131
62199200,1cyclictest0-21swapper/109:10:231
62199200,19cyclictest0-21swapper/112:00:141
62199200,19cyclictest0-21swapper/111:15:161
62199200,19cyclictest0-21swapper/111:00:181
62199200,19cyclictest0-21swapper/108:55:151
62199200,15cyclictest28885-21http_loadtime10:50:151
62199200,15cyclictest2048-21grep11:55:171
62199200,15cyclictest1797-21perf08:10:001
62199200,15cyclictest0-21swapper/111:55:001
62199200,15cyclictest0-21swapper/108:00:151
62199200,15cyclictest0-21swapper/107:45:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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