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2025-05-03 - 01:08
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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 20 highest latencies:
System rackcslot2.osadl.org (updated Fri May 02, 2025 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1186422000,5sleep111865-21sed07:03:431
1229227158,8sleep00-21swapper/007:07:370
255962650,1sleep10-21swapper/109:48:331
12542993810,27cyclictest0-21swapper/112:03:381
12542993613,22cyclictest23624-1kworker/u5:011:24:191
12542993610,25cyclictest0-21swapper/110:25:131
1254299360,1cyclictest0-21swapper/112:23:321
113442360,0sleep00-21swapper/010:53:380
12542993511,23cyclictest97850irq/107-eth1-rx10:35:571
12542993510,24cyclictest0-21swapper/111:22:421
12542993510,24cyclictest0-21swapper/107:39:481
1254299330,4cyclictest168-21systemd-journal09:11:521
12541993333,0cyclictest0-21swapper/011:14:250
1254299320,4cyclictest0-21swapper/109:31:431
1254299310,26cyclictest4774-21/usr/sbin/munin11:28:351
12541993110,16cyclictest0-21swapper/010:44:590
12542993010,19cyclictest0-21swapper/110:58:291
1254299300,5cyclictest168-21systemd-journal11:59:511
12541992910,1cyclictest0-21swapper/011:44:160
1254199290,26cyclictest22302-21kworker/0:008:59:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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