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2026-06-21 - 04:36
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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 376 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
2320499170,16cyclictest4099-21H222:10:212
2320499170,16cyclictest4099-21H222:10:212
2320499170,16cyclictest4035-21H222:10:212
2320499170,16cyclictest4035-21H222:10:212
2320499170,16cyclictest3987-21H222:10:212
2320499170,16cyclictest3976-21H222:10:212
2320499170,16cyclictest32195-21/usr/sbin/munin00:10:172
2320499170,16cyclictest30706-21cat23:10:112
2320499170,16cyclictest30072-21fschecks_count19:20:142
2320499170,16cyclictest24001-21expr19:10:142
2320499170,16cyclictest12040-21apache_volume21:40:122
2320499170,16cyclictest11446-21netstat22:35:172
2320499170,16cyclictest1144-21sed21:20:172
2320499170,16cyclictest1144-21sed21:20:172
2320499170,16cyclictest11160-21apache_accesses00:30:112
2320499170,15cyclictest3979-21H222:10:212
23203991715,1cyclictest3987-21H222:10:211
23203991715,1cyclictest3987-21H222:10:211
23203991715,1cyclictest0-21swapper/121:00:581
23203991714,2cyclictest9046-21fschecks_count00:25:141
23203991714,2cyclictest4099-21H222:10:211
23203991714,2cyclictest3989-21H222:10:211
23203991714,2cyclictest3436-21date23:20:011
23203991714,2cyclictest3315-21cnf-update-db21:25:011
23203991714,2cyclictest32408-21cpuspeed_turbos00:10:141
23203991714,2cyclictest31745-21cupsd21:40:551
23203991714,2cyclictest31181-21ntp_states21:15:191
23203991714,2cyclictest29450-21cpuspeed_turbos00:05:131
23203991714,2cyclictest2797-21latency20:25:171
23203991714,2cyclictest25883-21cat20:10:141
23203991714,2cyclictest20439-21cat23:50:141
23203991714,2cyclictest0-21swapper/122:41:081
23203991713,2cyclictest3991-21H222:10:211
2320399171,2cyclictest9363-21wc20:35:211
23203991712,3cyclictest0-21swapper/122:16:001
2320399170,2cyclictest947-21chrt23:15:141
2320399170,2cyclictest4035-21H222:10:211
2320399170,2cyclictest4035-21H222:10:211
2320399170,2cyclictest3983-21H222:10:211
2320399170,2cyclictest2998-21apt-config21:25:011
2320399170,2cyclictest2998-21apt-config21:25:011
2320399170,2cyclictest28449-21/usr/sbin/munin21:10:191
2320399170,2cyclictest27283-21nfsd400:00:181
2320399170,2cyclictest24258-21idleruntime19:10:161
2320399170,2cyclictest23232-21fschecks_count20:05:141
2320399170,2cyclictest14504-21snapd19:20:281
2320399170,16cyclictest4099-21H222:10:211
2320399170,16cyclictest3985-21H222:10:211
2320399170,16cyclictest3983-21H222:10:211
2320399170,16cyclictest3983-21H222:10:211
2320399170,16cyclictest28053-21nfsd423:05:171
2320399170,16cyclictest20070-21df_inode20:00:131
2320399170,16cyclictest17312-21df19:55:141
2320399170,16cyclictest10600-21expr20:40:131
2320399170,16cyclictest0-21swapper/123:26:031
23202991715,1cyclictest0-21swapper/022:35:130
23202991714,2cyclictest4099-21H222:10:210
23202991714,2cyclictest4035-21H222:10:210
23202991714,2cyclictest3987-21H222:10:210
23202991714,2cyclictest2360-21cat20:25:140
23202991714,2cyclictest10529-21ntp_states21:35:190
23202991713,3cyclictest3976-21H222:10:210
23202991713,2cyclictest2797-21grep19:30:140
2320299171,15cyclictest0-21swapper/000:10:220
2320299170,2cyclictest3983-21H222:10:210
2320299170,2cyclictest17963-21cat23:45:130
2320299170,2cyclictest14495-21snapd21:15:450
2320299170,2cyclictest13976-21if_enp1s022:40:160
2320299170,1cyclictest0-21swapper/022:28:220
2320299170,16cyclictest870-21systemd-logind23:03:520
2320299170,16cyclictest455-21plymouthd22:05:140
2320299170,16cyclictest455-21plymouthd21:09:000
2320299170,16cyclictest4099-21H222:10:210
2320299170,16cyclictest4035-21H222:10:210
2320299170,16cyclictest3991-21H222:10:210
2320299170,16cyclictest3989-21H222:10:210
2320299170,16cyclictest3987-21H222:10:210
2320299170,16cyclictest3976-21H222:10:210
2320299170,16cyclictest31919-21timerandwakeup23:10:190
2320299170,16cyclictest29125-21apt-key00:05:030
2320299170,16cyclictest26092-21df_inode20:10:140
2320299170,16cyclictest2308-21latency_hist19:30:010
2320299170,16cyclictest22675-21ls20:05:130
2320299170,16cyclictest22134-21vmstat23:50:240
2320299170,16cyclictest19014-21expr20:55:130
2320299170,16cyclictest16145-21nvmesmart_nvme023:40:190
2320299170,16cyclictest14505-21snapd22:50:280
2320299170,16cyclictest12155-21cpuspeed_turbos21:40:140
2320299170,16cyclictest11906-21ls23:35:120
23204991614,1cyclictest0-21swapper/221:50:032
23204991614,1cyclictest0-21swapper/221:45:162
2320499160,15cyclictest3991-21H222:10:212
2320499160,15cyclictest0-21swapper/219:15:132
2320499160,15cyclictest0-21swapper/219:15:132
23203991614,1cyclictest0-21swapper/121:35:031
2320399160,1cyclictest10434-21tr22:35:131
2320399160,15cyclictest0-21swapper/119:40:201
2320399160,15cyclictest0-21swapper/119:30:141
2320399160,15cyclictest0-21swapper/119:25:151
23202991615,1cyclictest27175-21kworker/0:021:55:120
23202991614,1cyclictest0-21swapper/020:40:130
23202991614,1cyclictest0-21swapper/019:11:260
2320299160,1cyclictest9044-21proc_pri20:35:190
2320299150,14cyclictest0-21swapper/019:20:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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