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2026-05-04 - 00:00
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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
Characteristics of the 50 highest latencies:
System rackdslot0.osadl.org (updated Sun May 03, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1531999293,15cyclictest0-21swapper/108:34:301
15319992827,0cyclictest0-21swapper/108:50:211
15320992218,2cyclictest20963-21sshd12:00:282
15319992213,0cyclictest0-21swapper/107:33:371
1531999220,18cyclictest0-21swapper/108:08:591
1532099212,13cyclictest8636-21mandb08:47:012
1531899203,16cyclictest25754-21cut09:20:010
1532099192,2cyclictest28823-21cut09:25:152
15320991915,3cyclictest25188-21nfsd408:20:182
1532099190,3cyclictest0-21swapper/211:25:382
1532099190,18cyclictest0-21swapper/208:14:202
1532099190,17cyclictest2350-21nvmesmart_nvme012:25:192
1531999190,1cyclictest0-21swapper/109:10:201
1531999190,18cyclictest843-21systemd-network08:14:211
1531899193,15cyclictest0-21swapper/011:34:090
1531899192,16cyclictest14744-21nfsd411:50:180
1531899190,1cyclictest0-21swapper/009:45:010
1531899190,18cyclictest0-21swapper/010:55:010
15320991816,1cyclictest0-21swapper/212:15:182
1532099181,2cyclictest22123-21chrt10:10:132
1532099180,3cyclictest0-21swapper/208:05:202
15319991816,1cyclictest0-21swapper/110:40:181
15319991815,2cyclictest10819-21grep07:55:181
15319991814,3cyclictest2007-21systemd-journal11:30:211
15319991814,2cyclictest1300-21lxd11:54:421
1531999180,2cyclictest3720-21cat12:30:001
1531899182,15cyclictest0-21swapper/010:35:180
15318991816,1cyclictest21167-21idleruntime09:10:150
15318991814,3cyclictest0-21swapper/008:15:140
15318991814,2cyclictest20437-21latency_hist11:05:010
15318991813,4cyclictest0-21swapper/009:37:560
1531899180,3cyclictest6308-21idleruntime-cro12:35:000
15320991715,1cyclictest0-21swapper/210:50:212
15320991714,2cyclictest9550-21expr10:45:132
15320991714,2cyclictest7001-21expr07:50:132
15320991714,2cyclictest5196-21nfsd412:30:172
15320991714,2cyclictest399-20systemd-journal11:38:552
15320991714,2cyclictest32476-21apache_accesses10:30:102
15320991714,2cyclictest32058-21which09:30:152
15320991714,2cyclictest27210-21chrt12:13:222
15320991714,2cyclictest24552-21smartctl09:15:182
15320991714,2cyclictest20391-21sort07:15:222
15320991714,2cyclictest14501-21snapd11:22:582
15320991714,2cyclictest1345-21tune2fs07:40:152
15320991714,2cyclictest13078-21awk08:00:152
1532099171,1cyclictest86542chrt10:42:412
1532099171,15cyclictest0-21swapper/211:50:152
1532099171,15cyclictest0-21swapper/209:05:152
1532099170,2cyclictest843-21systemd-network10:36:242
1532099170,2cyclictest4767-21sort08:40:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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