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2026-06-27 - 21:41
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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 Sat Jun 27, 2026 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26982993027,1cyclictest0-21swapper/209:15:162
26981993024,5cyclictest0-21swapper/108:00:001
2698199280,5cyclictest0-21swapper/109:00:151
26981992711,11cyclictest16842-21smartctl09:40:191
2698199253,21cyclictest0-21swapper/109:55:241
26981992518,6cyclictest1348-21lxd09:50:011
26981992518,6cyclictest1100-21snmpd10:04:541
26981992514,4cyclictest0-21swapper/108:20:491
26981992514,10cyclictest19869-21munin-plugin-st07:55:001
26981992512,7cyclictest18833-21postgres08:49:151
26980992523,1cyclictest9-21ksoftirqd/009:06:430
2698099250,24cyclictest0-21swapper/008:49:030
2698299240,19cyclictest4146-21cut07:25:152
2698199242,2cyclictest24248-21ntpq08:00:191
26981992417,6cyclictest1100-21snmpd08:27:041
2698199240,20cyclictest0-21swapper/109:20:401
2698299230,5cyclictest0-21swapper/211:34:012
2698299230,5cyclictest0-21swapper/209:23:132
2698299230,1cyclictest0-21swapper/210:25:012
26981992314,5cyclictest0-21swapper/109:49:071
2698199230,0cyclictest0-21swapper/110:55:531
2698099230,5cyclictest0-21swapper/010:36:470
26982992222,0cyclictest0-21swapper/209:54:072
26982992219,2cyclictest28-21ksoftirqd/210:05:132
26981992214,7cyclictest31055-21nfsd412:00:181
26981992214,7cyclictest20276-21latency_hist10:45:001
2698199220,2cyclictest20269-21latency08:50:181
2698199220,2cyclictest15060-21latency_hist09:40:001
2698199220,21cyclictest25736-21ntpq11:50:171
2698199220,21cyclictest12160-21expr12:25:151
2698199220,21cyclictest0-21swapper/110:12:151
2698199220,21cyclictest0-21swapper/109:06:221
2698199220,20cyclictest3989-21H222:10:211
2698199220,1cyclictest0-21swapper/112:20:131
2698199220,1cyclictest0-21swapper/111:59:471
2698199220,1cyclictest0-21swapper/109:10:191
2698199220,16cyclictest9036-21if_enp1s008:30:171
2698099220,18cyclictest0-21swapper/008:54:200
26982992121,0cyclictest28117-21mii-tool07:10:182
26982992121,0cyclictest0-21swapper/208:43:412
26982992119,1cyclictest26241-21cstates08:05:142
26982992117,3cyclictest0-21swapper/208:38:112
26981992114,6cyclictest44042chrt11:11:521
26981992114,6cyclictest0-21swapper/111:32:091
26981992114,6cyclictest0-21swapper/110:35:151
26981992114,6cyclictest0-21swapper/108:55:121
26981992113,7cyclictest0-21swapper/110:05:221
2698199211,19cyclictest0-21swapper/108:15:181
2698199210,20cyclictest2951-21cut12:10:001
2698199210,20cyclictest12233-21grep10:30:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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