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2026-05-31 - 04:18
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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 highest latencies:
System rackdslot0.osadl.org (updated Sun May 31, 2026 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
332299264,21cyclictest0-21swapper/020:49:530
333199240,6cyclictest824-21perf21:00:012
3322992416,7cyclictest0-21swapper/000:30:000
3322992416,7cyclictest0-21swapper/000:30:000
3322992414,2cyclictest25621-21ls23:35:140
3322992414,2cyclictest25621-21ls23:35:140
3322992317,5cyclictest3983-21H222:10:210
332299230,3cyclictest21779-21sed20:39:000
3331992217,4cyclictest3981-21H222:10:212
3322992214,2cyclictest25205-21cat23:35:010
332299221,15cyclictest162162chrt23:19:260
332299220,2cyclictest6004-21latency_hist22:05:010
332299220,1cyclictest0-21swapper/022:40:180
332299220,16cyclictest30961-21grep22:45:200
332299220,16cyclictest21049-21cat22:30:140
332299220,16cyclictest11414-21ntp_states21:15:200
332299220,15cyclictest23341-21apache_volume22:35:120
332299220,15cyclictest0-21swapper/023:45:170
332299220,15cyclictest0-21swapper/020:40:110
332699210,20cyclictest843-21systemd-network21:50:271
3322992117,3cyclictest0-21swapper/019:28:150
3322992114,2cyclictest21785-21chrt23:25:260
3322992114,2cyclictest18561-21smtp00:16:580
3322992113,7cyclictest843-21systemd-network23:43:520
332299210,2cyclictest15398-21cat21:25:010
332299210,16cyclictest648-21postgres20:58:270
332299210,16cyclictest3989-21H222:10:210
332299210,16cyclictest17470-21idleruntime-cro22:25:000
332299210,15cyclictest8570-21/usr/sbin/munin19:15:190
332299210,15cyclictest26147-21chrt19:49:180
333199202,17cyclictest0-21swapper/221:30:012
333199202,15cyclictest0-21swapper/223:20:132
333199200,17cyclictest0-21swapper/220:45:142
3322992014,3cyclictest4099-21H222:10:210
3322992014,2cyclictest3976-21H222:10:210
3322992014,1cyclictest0-21swapper/020:06:520
3322992013,2cyclictest8237-21munin-plugin-st20:15:010
3322992013,2cyclictest8237-21munin-plugin-st20:15:000
3322992013,2cyclictest3983-21H222:10:210
332299200,2cyclictest3976-21H222:10:210
332299200,1cyclictest0-21swapper/021:35:150
332299200,15cyclictest9848-21sed23:05:190
333199195,13cyclictest0-21swapper/223:57:372
333199192,16cyclictest3976-21H222:10:212
333199192,16cyclictest3976-21H222:10:212
333199192,16cyclictest21435-21chrt00:23:352
3331991915,3cyclictest0-21swapper/222:16:372
3331991914,4cyclictest26307-21cat22:40:012
333199190,18cyclictest3985-21H222:10:212
333199190,18cyclictest0-21swapper/220:02:282
333199190,16cyclictest3987-21H222:10:212
333199190,16cyclictest3981-21H222:10:212
3326991916,2cyclictest3987-21H222:10:211
3326991916,2cyclictest18839-21latency22:25:171
3326991914,4cyclictest16886-21ntp_kernel_pll_21:25:191
332699191,2cyclictest12098-21grep22:15:131
332699190,2cyclictest3991-21H222:10:211
332699190,1cyclictest0-21swapper/123:40:171
332699190,18cyclictest843-21systemd-network22:38:181
332699190,16cyclictest4099-21H222:10:211
3322991915,1cyclictest0-21swapper/020:02:350
332299190,2cyclictest29972-21grep19:55:150
332299190,1cyclictest0-21swapper/023:20:130
332299190,1cyclictest0-21swapper/020:25:580
332299190,1cyclictest0-21swapper/019:50:140
332299190,16cyclictest3976-21H222:10:210
332299190,16cyclictest1375-21munin-node00:04:010
332299190,16cyclictest1375-21munin-node00:04:000
332299190,15cyclictest4099-21H222:10:210
332299190,15cyclictest3981-21H222:10:210
332299190,15cyclictest28047-21fschecks_count00:35:150
3331991816,2cyclictest3321-21cyclictest22:10:202
3331991816,1cyclictest0-21swapper/223:17:342
3331991816,1cyclictest0-21swapper/221:11:132
3331991815,2cyclictest3989-21H222:10:212
3331991815,2cyclictest12951-21perf00:10:002
3331991814,3cyclictest4035-21H222:10:212
3331991814,3cyclictest0-21swapper/219:40:432
333199181,2cyclictest3976-21H222:10:212
333199181,2cyclictest29591-21chrt21:48:452
3331991812,3cyclictest0-21swapper/222:04:112
333199181,15cyclictest3976-21H222:10:212
333199180,2cyclictest3991-21H222:10:212
333199180,2cyclictest3985-21H222:10:212
333199180,1cyclictest0-21swapper/219:25:362
333199180,17cyclictest0-21swapper/221:07:322
333199180,16cyclictest3989-21H222:10:212
333199180,11cyclictest0-21swapper/220:55:012
332699182,1cyclictest214242sleep100:23:261
332699182,15cyclictest3987-21H222:10:211
3326991816,1cyclictest0-21swapper/119:17:371
3326991815,2cyclictest32128-21nfsd423:45:181
3326991815,1cyclictest0-21swapper/120:35:171
3326991814,3cyclictest3983-21H222:10:211
3326991814,2cyclictest3979-21H222:10:211
3326991814,2cyclictest3979-21H222:10:211
332699181,3cyclictest0-21swapper/122:55:011
3326991813,3cyclictest22504-21nfsd419:40:181
332699181,16cyclictest3981-21H222:10:211
332699180,2cyclictest4035-21H222:10:211
332699180,2cyclictest4035-21H222:10:211
332699180,2cyclictest3991-21H222:10:211
332699180,2cyclictest3991-21H222:10:211
332699180,2cyclictest3989-21H222:10:211
332699180,2cyclictest3983-21H222:10:211
332699180,17cyclictest3983-21H222:10:211
332299182,15cyclictest8351-21chrt22:06:040
3322991816,1cyclictest0-21swapper/020:24:570
3322991815,2cyclictest4035-21H222:10:210
3322991814,3cyclictest3987-21H222:10:210
332299180,2cyclictest3989-21H222:10:210
332299180,17cyclictest10486-21nfsd422:10:180
332299180,16cyclictest3991-21H222:10:210
332299180,16cyclictest3981-21H222:10:210
3331991715,1cyclictest4099-21H222:10:212
3331991714,2cyclictest993-21dbus-daemon21:40:022
3331991714,2cyclictest4035-21H222:10:212
3331991714,2cyclictest3991-21H222:10:212
3331991714,2cyclictest3991-21H222:10:212
3331991714,2cyclictest3983-21H222:10:212
3331991714,2cyclictest15379-21ntpq20:25:202
3331991714,2cyclictest12264-21/usr/sbin/munin23:10:172
3331991714,2cyclictest12264-21/usr/sbin/munin23:10:172
333199171,2cyclictest23972-21cpuspeed_turbos19:45:142
333199171,15cyclictest14725-21ntp_kernel_err00:10:182
333199170,2cyclictest4035-21H222:10:212
333199170,2cyclictest4035-21H222:10:212
333199170,2cyclictest3987-21H222:10:212
333199170,2cyclictest31675-21idleruntime23:45:162
333199170,2cyclictest20812-21ntp_states20:35:192
333199170,2cyclictest18666-21cat19:35:132
333199170,2cyclictest16798-21expr00:15:142
333199170,2cyclictest16541-21nvmesmart_nvme022:20:192
333199170,2cyclictest10703-21fschecks_time21:15:182
333199170,1cyclictest0-21swapper/222:30:052
333199170,16cyclictest5838-21grep20:10:132
333199170,16cyclictest5838-21grep20:10:122
333199170,16cyclictest3989-21H222:10:212
333199170,16cyclictest3989-21H222:10:212
333199170,16cyclictest3987-21H222:10:212
333199170,16cyclictest3985-21H222:10:212
333199170,16cyclictest3983-21H222:10:212
333199170,16cyclictest3976-21H222:10:212
333199170,16cyclictest3084-21switchtime23:50:222
333199170,16cyclictest30608-21expr21:50:132
333199170,16cyclictest1751-21nfsd421:55:152
333199170,16cyclictest0-21swapper/223:05:272
333199170,15cyclictest0-21swapper/221:31:132
332699172,1cyclictest21-21ksoftirqd/119:47:051
3326991715,1cyclictest21-21ksoftirqd/123:16:341
3326991715,1cyclictest0-21swapper/123:38:041
3326991715,1cyclictest0-21swapper/123:38:041
3326991715,1cyclictest0-21swapper/100:10:121
3326991715,1cyclictest0-21swapper/100:00:171
3326991715,1cyclictest0-21swapper/100:00:161
3326991714,2cyclictest8270-21latency21:10:171
3326991714,2cyclictest5351-21latency23:55:191
3326991714,2cyclictest4099-21H222:10:211
3326991714,2cyclictest4035-21H222:10:211
3326991714,2cyclictest3989-21H222:10:211
3326991714,2cyclictest3980-21H222:10:211
3326991714,2cyclictest30783-21ntp_states22:45:191
3326991714,2cyclictest29326-21users21:45:231
3326991714,2cyclictest26115-21timerwakeupswit21:40:201
3326991714,2cyclictest19843-21apache_volume23:25:121
3326991714,2cyclictest10728-21hddtemp_smartct21:15:181
332699171,1cyclictest3985-21H222:10:211
332699171,1cyclictest28533-21missed_timers00:35:171
332699171,15cyclictest0-21swapper/120:55:131
332699170,2cyclictest4035-21H222:10:211
332699170,2cyclictest3991-21H222:10:211
332699170,2cyclictest3991-21H222:10:211
332699170,2cyclictest3991-21H222:10:211
332699170,2cyclictest3987-21H222:10:211
332699170,2cyclictest3987-21H222:10:211
332699170,2cyclictest3981-21H222:10:211
332699170,2cyclictest3976-21H222:10:211
332699170,2cyclictest29553-21cat20:50:171
332699170,2cyclictest14648-21https22:20:011
332699170,16cyclictest3989-21H222:10:211
332699170,16cyclictest3983-21H222:10:211
332699170,16cyclictest3981-21H222:10:211
332699170,16cyclictest3981-21H222:10:211
332699170,16cyclictest26989-21pzem_voltage20:45:221
332699170,16cyclictest2375-21sed21:00:171
332699170,16cyclictest20573-21apache_processe22:30:121
332699170,15cyclictest3976-21H222:10:211
3322991715,1cyclictest6227-21timerwakeupswit23:55:230
3322991714,2cyclictest4035-21H222:10:210
3322991714,2cyclictest3987-21H222:10:210
3322991714,2cyclictest3983-21H222:10:210
3322991714,2cyclictest11227-21apt-get23:10:110
3322991714,2cyclictest11227-21apt-get23:10:110
332299170,2cyclictest4035-21H222:10:210
332299170,2cyclictest3989-21H222:10:210
332299170,2cyclictest30110-21apache_accesses21:50:110
332299170,16cyclictest28178-21/usr/sbin/munin21:45:170
332299170,15cyclictest3989-21H222:10:210
333199160,1cyclictest0-21swapper/220:30:132
333199160,15cyclictest22869-21expr20:40:142
333199160,15cyclictest13299-21expr21:20:142
333199160,15cyclictest0-21swapper/200:25:152
333199160,15cyclictest0-21swapper/200:25:142
3326991614,1cyclictest0-21swapper/120:10:161
3326991614,1cyclictest0-21swapper/120:10:161
332699160,1cyclictest0-21swapper/119:50:171
332699160,15cyclictest11945-21which20:20:151
3322991613,2cyclictest3979-21H222:10:210
332299160,1cyclictest0-21swapper/021:40:120
332299160,15cyclictest10300-21forks19:20:140
332299160,15cyclictest0-21swapper/021:25:170
332299160,15cyclictest0-21swapper/000:10:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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