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2026-06-21 - 07:07
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sun Jun 21, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23203992313,10cyclictest0-21swapper/122:30:201
23204992113,4cyclictest0-21swapper/222:18:252
23203992114,4cyclictest11330-21grep00:30:131
2320299215,15cyclictest0-21swapper/022:45:140
2320499204,2cyclictest3983-21H222:10:212
23204992018,1cyclictest0-21swapper/219:35:002
2320299205,11cyclictest0-21swapper/020:25:000
2320299204,15cyclictest1100-21snmpd22:03:470
23202992015,4cyclictest12463-21nfsd400:30:180
2320299200,18cyclictest0-21swapper/021:55:010
2320499194,1cyclictest0-21swapper/223:42:192
2320499193,15cyclictest0-21swapper/220:20:592
23204991916,2cyclictest3983-21H222:10:212
2320499191,16cyclictest16959-21tr19:55:142
2320499190,1cyclictest0-21swapper/221:55:022
2320499190,16cyclictest3991-21H222:10:212
2320499190,16cyclictest3983-21H222:10:212
23203991917,1cyclictest25805-21cpuspeed_turbos22:05:151
23203991917,1cyclictest0-21swapper/100:36:561
23203991916,2cyclictest19789-21cat21:54:551
2320399190,18cyclictest16609-21grep20:50:151
2320399190,18cyclictest0-21swapper/122:50:221
2320399190,16cyclictest4035-21H222:10:211
2320399190,16cyclictest3991-21H222:10:211
2320299193,15cyclictest23988-21sed21:05:010
2320299190,2cyclictest3983-21H222:10:210
2320299190,16cyclictest3989-21H222:10:210
2320299190,16cyclictest3987-21H222:10:210
2320299190,16cyclictest3987-21H222:10:210
2320299190,16cyclictest3987-21H222:10:210
2320299190,16cyclictest3983-21H222:10:210
23204991816,1cyclictest28-21ksoftirqd/220:05:472
23204991816,1cyclictest0-21swapper/223:23:122
23204991816,1cyclictest0-21swapper/222:11:442
23204991815,2cyclictest21414-21/usr/sbin/munin21:00:102
23204991815,2cyclictest17465-21apache_accesses23:45:102
23204991813,4cyclictest3989-21H222:10:212
23204991813,4cyclictest0-21swapper/222:23:372
23204991813,2cyclictest3987-21H222:10:212
2320499181,2cyclictest30864-21cat21:15:182
2320499181,16cyclictest2751-21trivial-rewrite23:19:102
2320499180,3cyclictest26452-21expr00:00:132
2320499180,17cyclictest9901-21sed20:39:002
2320499180,17cyclictest29646-21grep20:15:192
2320499180,17cyclictest17318-21apache200:19:392
2320499180,15cyclictest3979-21H222:10:212
2320399189,5cyclictest0-21swapper/121:08:431
23203991816,1cyclictest0-21swapper/123:30:181
23203991816,1cyclictest0-21swapper/121:49:411
23203991816,1cyclictest0-21swapper/120:55:131
23203991815,2cyclictest3991-21H222:10:211
23203991815,2cyclictest3979-21H222:10:211
23203991814,3cyclictest14496-21snapd22:10:281
23203991814,3cyclictest0-21swapper/123:00:171
23203991813,2cyclictest3985-21H222:10:211
2320399181,1cyclictest3981-21H222:10:211
2320399181,16cyclictest22588-21cut22:55:191
2320399180,2cyclictest4099-21H222:10:211
2320399180,17cyclictest3983-21H222:10:211
2320399180,17cyclictest3981-21H222:10:211
2320399180,15cyclictest3979-21H222:10:211
2320299185,13cyclictest0-21swapper/000:00:170
23202991815,2cyclictest4099-21H222:10:210
23202991814,3cyclictest3983-21H222:10:210
23202991814,3cyclictest3981-21H222:10:210
23202991813,2cyclictest3976-21H222:10:210
2320299181,16cyclictest3987-21H222:10:210
2320299180,2cyclictest3989-21H222:10:210
2320299180,2cyclictest3987-21H222:10:210
2320299180,2cyclictest3981-21H222:10:210
2320299180,2cyclictest3979-21H222:10:210
2320299180,17cyclictest3979-21H222:10:210
2320299180,17cyclictest3979-21H222:10:210
2320299180,17cyclictest0-21swapper/019:55:210
2320299180,16cyclictest3991-21H222:10:210
2320299180,15cyclictest3991-21H222:10:210
2320299180,15cyclictest3987-21H222:10:210
2320299180,15cyclictest3976-21H222:10:210
23204991715,1cyclictest0-21swapper/223:55:342
23204991715,1cyclictest0-21swapper/219:48:042
23204991714,2cyclictest7208-21mailstats19:35:222
23204991714,2cyclictest6373-21apache_processe23:25:122
23204991714,2cyclictest4404-21http_loadtime21:25:162
23204991714,2cyclictest3991-21H222:10:212
23204991714,2cyclictest3983-21H222:10:212
23204991714,2cyclictest25078-21irqstats21:05:152
23204991714,2cyclictest25032-21anvil22:05:042
23204991714,2cyclictest23686-21hddtemp_smartct22:00:152
23204991714,2cyclictest20614-21cat20:00:162
23204991714,2cyclictest18644-21apache_accesses22:50:122
2320499170,2cyclictest9068-21find23:30:102
2320499170,2cyclictest6407-21apache_processe21:30:112
2320499170,2cyclictest27515-21postgres20:11:162
2320499170,2cyclictest2500-21munin-plugin-st19:30:012
2320499170,2cyclictest13214-21apache_accesses20:45:122
2320499170,2cyclictest13174-21apache_volume22:40:132
2320499170,2cyclictest1-21systemd20:25:022
2320499170,2cyclictest11113-21grep20:40:142
2320499170,16cyclictest6201-21ntpq22:25:182
2320499170,16cyclictest4866-21apache_processe20:30:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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