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2026-11-01 - 10:44
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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 all highest latencies:
System rackdslot0.osadl.org (updated Sun Nov 01, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22195992514,6cyclictest5774-21python320:35:002
2219599230,5cyclictest0-21swapper/220:14:332
2219599220,18cyclictest0-21swapper/220:06:162
22195992017,2cyclictest3979-21H222:10:212
2219599200,19cyclictest16122-21apache_processe21:50:112
2219599200,19cyclictest14496-21snapd19:37:512
2218999202,17cyclictest0-21swapper/120:34:581
22189992015,2cyclictest0-21swapper/100:15:381
22185992012,4cyclictest0-21swapper/000:37:490
22185992012,4cyclictest0-21swapper/000:37:490
2219599193,15cyclictest4035-21H222:10:212
2219599193,15cyclictest0-21swapper/219:51:262
2219599193,15cyclictest0-21swapper/219:51:262
2219599192,3cyclictest0-21swapper/223:42:012
22195991916,2cyclictest3979-21H222:10:212
22195991916,2cyclictest13504-21ntp_kernel_err20:45:172
2219599190,3cyclictest0-21swapper/220:35:192
2219599190,2cyclictest4099-21H222:10:212
2219599190,2cyclictest3983-21H222:10:212
2219599190,2cyclictest3983-21H222:10:212
2219599190,18cyclictest0-21swapper/221:59:582
2219599190,18cyclictest0-21swapper/219:12:332
2219599190,16cyclictest4035-21H222:10:212
2219599190,16cyclictest3989-21H222:10:212
2219599190,16cyclictest3983-21H222:10:212
2219599190,16cyclictest3983-21H222:10:212
22189991917,1cyclictest3985-21H222:10:211
22189991913,3cyclictest455-21plymouthd19:14:411
2218999190,2cyclictest6628-21latency_hist19:40:021
2218999190,18cyclictest0-21swapper/123:42:481
2218999190,18cyclictest0-21swapper/121:34:331
2218999190,16cyclictest3976-21H222:10:211
2218599192,16cyclictest1526-21lxd22:10:520
22185991916,2cyclictest27857-21missed_timers20:15:180
22185991914,4cyclictest3987-21H222:10:210
2218599190,2cyclictest3983-21H222:10:210
2218599190,16cyclictest3983-21H222:10:210
2219599182,2cyclictest28-21ksoftirqd/222:36:012
2219599182,15cyclictest381-21chrt19:27:512
2219599182,15cyclictest17887-21expr22:50:132
22195991816,1cyclictest0-21swapper/221:23:452
22195991815,2cyclictest3983-21H222:10:212
22195991814,3cyclictest843-21systemd-network21:25:192
22195991814,3cyclictest3983-21H222:10:212
22195991814,3cyclictest0-21swapper/220:40:192
2219599181,16cyclictest14471-21needreboot21:45:172
2219599181,15cyclictest0-21swapper/222:32:082
2219599180,2cyclictest4035-21H222:10:212
2219599180,17cyclictest3989-21H222:10:212
2219599180,17cyclictest3985-21H222:10:212
2219599180,17cyclictest12992-21python323:40:002
2219599180,17cyclictest0-21swapper/200:31:582
2219599180,16cyclictest3981-21H222:10:212
2219599180,15cyclictest4099-21H222:10:212
2218999182,15cyclictest26611-21ntp_offset19:15:201
22189991816,1cyclictest0-21swapper/122:35:441
22189991816,1cyclictest0-21swapper/119:56:051
22189991816,1cyclictest0-21swapper/119:52:141
22189991816,1cyclictest0-21swapper/119:52:131
22189991815,2cyclictest9295-21sendmail_mailtr23:30:221
22189991815,2cyclictest0-21swapper/121:20:191
22189991814,4cyclictest0-21swapper/100:25:191
22189991814,3cyclictest3989-21H222:10:211
22189991814,3cyclictest3981-21H222:10:211
22189991814,3cyclictest3976-21H222:10:211
2218999181,2cyclictest4099-21H222:10:211
2218999181,2cyclictest12041-21chrt19:49:211
2218999180,3cyclictest7250-21grep19:40:151
2218999180,2cyclictest4099-21H222:10:211
2218999180,2cyclictest3987-21H222:10:211
2218999180,2cyclictest3976-21H222:10:211
2218999180,17cyclictest0-21swapper/123:26:221
2218999180,15cyclictest3983-21H222:10:211
2218999180,15cyclictest3983-21H222:10:211
2218999180,15cyclictest3981-21H222:10:211
2218599182,15cyclictest0-21swapper/019:12:150
22185991816,1cyclictest9-21ksoftirqd/023:52:070
22185991814,3cyclictest3985-21H222:10:210
22185991814,3cyclictest3983-21H222:10:210
22185991814,3cyclictest0-21swapper/019:57:010
2218599181,16cyclictest3976-21H222:10:210
2218599180,3cyclictest12021-21nvmesmart_nvme021:40:230
2218599180,2cyclictest3989-21H222:10:210
2218599180,17cyclictest4099-21H222:10:210
2218599180,17cyclictest3983-21H222:10:210
2218599180,17cyclictest3976-21H222:10:210
2218599180,17cyclictest3976-21H222:10:210
2218599180,17cyclictest13381-21grep20:45:170
2218599180,16cyclictest14496-21snapd21:37:580
2218599180,15cyclictest3987-21H222:10:210
2218599180,15cyclictest3983-21H222:10:210
2218599180,15cyclictest3981-21H222:10:210
22195991715,1cyclictest0-21swapper/220:00:112
22195991714,2cyclictest7960-21wc23:30:162
22195991714,2cyclictest32073-21munin-plugin-st20:25:022
22195991714,2cyclictest29373-21irqstats00:10:132
22195991714,2cyclictest27125-21timerwakeupswit19:15:242
22195991714,2cyclictest2057-21cupsd21:35:262
2219599171,15cyclictest5703-21http_loadtime23:25:152
2219599171,15cyclictest0-21swapper/222:15:152
2219599170,2cyclictest993-21dbus-daemon23:55:212
2219599170,2cyclictest4099-21H222:10:212
2219599170,2cyclictest3979-21H222:10:212
2219599170,2cyclictest3976-21H222:10:212
2219599170,2cyclictest3707-21master20:55:132
2219599170,2cyclictest27454-21ps21:10:212
2219599170,2cyclictest25356-21sed21:08:592
2219599170,2cyclictest17705-21/usr/sbin/munin23:45:162
2219599170,2cyclictest15516-21df22:45:162
2219599170,2cyclictest14550-21snapd00:02:572
2219599170,1cyclictest0-21swapper/222:27:152
2219599170,1cyclictest0-21swapper/222:27:142
2219599170,16cyclictest3987-21H222:10:212
2219599170,16cyclictest3985-21H222:10:212
2219599170,16cyclictest3983-21H222:10:212
2219599170,16cyclictest3983-21H222:10:212
2219599170,16cyclictest3981-21H222:10:212
2219599170,16cyclictest3981-21H222:10:212
2219599170,16cyclictest29918-21vmstat19:20:242
2219599170,16cyclictest20427-21nfsd423:50:192
2219599170,16cyclictest1483-21hddtemp_smartct22:20:152
22189991715,1cyclictest21-21ksoftirqd/120:55:581
22189991715,1cyclictest0-21swapper/100:35:131
22189991715,1cyclictest0-21swapper/100:35:131
22189991714,2cyclictest9287-21systemctl21:35:201
22189991714,2cyclictest3989-21H222:10:211
22189991714,2cyclictest3987-21H222:10:211
22189991714,2cyclictest3979-21H222:10:211
22189991714,2cyclictest3976-21H222:10:211
22189991714,2cyclictest30054-21cat20:20:131
22189991714,2cyclictest29675-21nfsd400:10:151
22189991714,2cyclictest20579-21ntpq23:50:201
22189991713,3cyclictest3987-21H222:10:211
22189991713,3cyclictest3987-21H222:10:211
22189991713,3cyclictest3985-21H222:10:211
22189991713,3cyclictest25372-21nfsd420:10:201
22189991713,2cyclictest4035-21H222:10:211
2218999171,2cyclictest993-21dbus-daemon20:35:221
2218999170,2cyclictest3416-21qmgr23:16:531
2218999170,2cyclictest24478-21ntpq21:05:221
2218999170,2cyclictest23271-21nfsd423:55:191
2218999170,2cyclictest16507-21mailstats20:50:201
2218999170,2cyclictest12125-21/usr/sbin/munin20:45:161
2218999170,1cyclictest0-21swapper/120:05:081
2218999170,16cyclictest9726-21expr20:40:141
2218999170,16cyclictest5601-21lxd22:20:381
2218999170,16cyclictest4099-21H222:10:211
2218999170,16cyclictest3989-21H222:10:211
2218999170,16cyclictest2007-21systemd-journal19:26:491
2218999170,16cyclictest1515-21lxd21:46:521
2218999170,16cyclictest14506-21snapd22:32:531
2218999170,16cyclictest1348-21lxd23:46:371
2218999170,16cyclictest12177-21/usr/sbin/munin22:40:111
2218999170,16cyclictest0-21swapper/120:00:181
2218599172,1cyclictest0-21swapper/019:35:190
22185991714,2cyclictest9009-21perf20:40:000
22185991714,2cyclictest3987-21H222:10:210
22185991714,2cyclictest3985-21H222:10:210
22185991714,2cyclictest3985-21H222:10:210
22185991714,2cyclictest3976-21H222:10:210
22185991714,2cyclictest26761-21sed19:15:220
22185991714,2cyclictest25760-21latency_hist23:05:010
22185991714,2cyclictest2365-21expr23:20:140
22185991714,2cyclictest18422-21cron21:55:000
22185991714,2cyclictest17207-21munin-run20:55:020
22185991714,2cyclictest12207-21dpkg22:40:120
22185991714,2cyclictest10753-21cat19:45:170
22185991714,2cyclictest0-21swapper/020:10:370
22185991713,3cyclictest3987-21H222:10:210
2218599171,2cyclictest26931-21chrt22:08:400
2218599170,2cyclictest455-21plymouthd23:55:220
2218599170,2cyclictest4035-21H222:10:210
2218599170,2cyclictest3981-21H222:10:210
2218599170,2cyclictest3981-21H222:10:210
2218599170,2cyclictest31304-21cpuspeed_turbos00:15:140
2218599170,2cyclictest31013-21expr19:25:150
2218599170,2cyclictest29672-21netstat00:10:140
2218599170,2cyclictest24574-21ps21:05:220
2218599170,2cyclictest20656-21expr21:00:130
2218599170,2cyclictest12865-21chrt23:39:460
2218599170,2cyclictest10047-21idleruntime22:35:150
2218599170,1cyclictest3976-21H222:10:210
2218599170,1cyclictest0-21swapper/022:33:040
2218599170,16cyclictest6168-21nfsd421:30:190
2218599170,16cyclictest5599-21sed22:25:220
2218599170,16cyclictest5599-21sed22:25:210
2218599170,16cyclictest3983-21H222:10:210
2218599170,16cyclictest31241-21munin-plugin-st23:15:000
2218599170,16cyclictest23469-21grep22:00:190
2218599170,16cyclictest18880-21nfsd422:50:180
2218599170,16cyclictest14282-21expr23:40:150
2219599160,15cyclictest0-21swapper/221:00:072
22189991614,1cyclictest0-21swapper/121:00:151
22189991614,1cyclictest0-21swapper/120:25:141
2218999160,15cyclictest3985-21H222:10:211
2218999160,15cyclictest1100-21snmpd21:40:131
2218999160,15cyclictest0-21swapper/122:45:121
2218999160,15cyclictest0-21swapper/122:00:151
2218999160,15cyclictest0-21swapper/100:20:201
22185991615,1cyclictest9-21ksoftirqd/022:15:150
22185991614,1cyclictest0-21swapper/022:45:180
22185991613,2cyclictest7722-21/usr/sbin/munin23:30:150
22185991613,2cyclictest15748-21cut21:50:010
2218599160,15cyclictest4602-21nfsd420:30:190
2218599160,15cyclictest26432-21expr23:05:150
2218599160,15cyclictest0-21swapper/019:40:180
2218599160,15cyclictest0-21swapper/019:30:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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