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2026-08-28 - 16:34
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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 Fri Aug 28, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2676099240,19cyclictest0-21swapper/210:40:172
2676099232,14cyclictest4197-21munin-run08:25:002
2676099232,14cyclictest4197-21munin-run08:25:002
2675899230,5cyclictest0-21swapper/012:06:430
26760992117,3cyclictest0-21swapper/207:54:232
26760992116,3cyclictest15018-21grep10:35:132
26760992017,2cyclictest859-21if_enp1s012:05:152
26760992011,5cyclictest0-21swapper/211:25:122
2676099200,3cyclictest22950-21smartctl11:45:152
2676099200,19cyclictest0-21swapper/207:41:262
26759992017,2cyclictest3981-21H222:10:211
2676099193,1cyclictest0-21swapper/210:02:062
2676099192,16cyclictest2077-21cat07:20:222
26760991917,1cyclictest5439-21expr11:15:142
26760991917,1cyclictest24819-21expr09:00:142
26760991917,1cyclictest22107-21sed10:45:202
26760991917,1cyclictest0-21swapper/211:30:202
26760991917,1cyclictest0-21swapper/208:15:222
26760991916,2cyclictest8570-21date12:20:002
26760991915,3cyclictest0-21swapper/212:39:032
26760991915,3cyclictest0-21swapper/207:57:122
2676099191,17cyclictest0-21swapper/208:45:012
2676099190,2cyclictest4035-21H222:10:212
2676099190,18cyclictest0-21swapper/209:33:062
2676099190,16cyclictest0-21swapper/211:15:002
2675999192,2cyclictest19414-21chrt12:35:311
2675999192,16cyclictest0-21swapper/112:15:171
2675999190,2cyclictest4099-21H222:10:211
2675999190,2cyclictest3979-21H222:10:211
2675999190,16cyclictest3981-21H222:10:211
2675999190,16cyclictest3979-21H222:10:211
2675999190,16cyclictest3979-21H222:10:211
26758991917,1cyclictest9-21ksoftirqd/010:07:450
2675899190,2cyclictest3987-21H222:10:210
2675899190,2cyclictest3987-21H222:10:210
2675899190,2cyclictest3983-21H222:10:210
2675899190,16cyclictest3989-21H222:10:210
2675899190,16cyclictest3989-21H222:10:210
2675899190,16cyclictest3985-21H222:10:210
2676099182,1cyclictest195252sleep211:40:132
2676099182,15cyclictest7588-21nfsd409:25:172
2676099182,15cyclictest20844-21cpuspeed_turbos09:50:132
26760991816,1cyclictest28-21ksoftirqd/207:47:462
26760991816,1cyclictest24553-21awk10:50:202
26760991816,1cyclictest0-21swapper/210:20:132
26760991815,2cyclictest9621-21ls10:25:142
26760991815,2cyclictest4171-21if_eno112:10:152
26760991815,2cyclictest30779-21latency07:15:172
26760991815,2cyclictest13515-21expr09:35:152
26760991814,3cyclictest0-21swapper/211:23:522
26760991814,3cyclictest0-21swapper/211:23:522
26760991813,4cyclictest0-21swapper/212:25:512
2676099181,1cyclictest0-21swapper/211:55:172
26760991811,4cyclictest9115-21tail08:30:172
2676099180,3cyclictest3030-21gmain08:58:202
2676099180,3cyclictest10066-21cut07:35:192
2676099180,2cyclictest3981-21H222:10:212
2676099180,17cyclictest4994-21plymouth08:25:022
2676099180,17cyclictest3989-21H222:10:212
2676099180,17cyclictest30401-21fschecks_time12:00:142
2676099180,17cyclictest30359-21sed11:00:192
2676099180,17cyclictest10070-21nfsd412:20:172
2676099180,17cyclictest0-21swapper/209:55:422
2676099180,15cyclictest3987-21H222:10:212
2675999182,1cyclictest9450-21perl07:35:141
2675999182,15cyclictest3987-21H222:10:211
2675999182,15cyclictest0-21swapper/107:30:171
26759991816,1cyclictest0-21swapper/110:43:161
26759991815,2cyclictest30115-21timerwakeupswit08:10:201
26759991814,3cyclictest3989-21H222:10:211
2675999180,2cyclictest3991-21H222:10:211
2675999180,2cyclictest3991-21H222:10:211
2675999180,2cyclictest3991-21H222:10:211
2675999180,2cyclictest3981-21H222:10:211
2675999180,17cyclictest3991-21H222:10:211
2675999180,17cyclictest3976-21H222:10:211
2675999180,16cyclictest4099-21H222:10:211
2675999180,16cyclictest3981-21H222:10:211
26758991816,1cyclictest0-21swapper/010:29:440
26758991816,1cyclictest0-21swapper/007:52:210
26758991816,1cyclictest0-21swapper/007:43:550
26758991815,2cyclictest3976-21H222:10:210
26758991815,2cyclictest15957-21idleruntime09:40:140
26758991814,3cyclictest1351-21lxd08:54:430
2675899180,2cyclictest3991-21H222:10:210
2675899180,2cyclictest3991-21H222:10:210
2675899180,2cyclictest3981-21H222:10:210
2675899180,1cyclictest0-21swapper/008:21:560
2675899180,1cyclictest0-21swapper/008:21:560
2675899180,17cyclictest3991-21H222:10:210
2675899180,17cyclictest3981-21H222:10:210
2675899180,17cyclictest3979-21H222:10:210
2675899180,17cyclictest15609-21nfsd407:45:180
2675899180,16cyclictest4035-21H222:10:210
2675899180,15cyclictest3983-21H222:10:210
2675899180,15cyclictest3981-21H222:10:210
2675899180,15cyclictest3979-21H222:10:210
26760991715,1cyclictest0-21swapper/211:35:142
26760991714,2cyclictest4247-21latency07:25:172
26760991714,2cyclictest32139-21apt-config10:10:022
26760991714,2cyclictest27614-21cstates09:05:132
2676099171,15cyclictest7237-21nfsd407:30:172
2676099170,2cyclictest705-21cstates09:15:142
2676099170,2cyclictest25293-21cat11:50:192
2676099170,2cyclictest18485-21cstates09:45:132
2676099170,2cyclictest17432-21missed_timers08:45:182
2676099170,16cyclictest3991-21H222:10:212
2676099170,16cyclictest31418-21cat11:05:132
2676099170,16cyclictest29518-21sort10:05:142
2676099170,16cyclictest28660-21cat07:10:192
2676099170,16cyclictest26510-21sort10:55:142
2676099170,16cyclictest2639-21chrt10:15:082
2676099170,16cyclictest22600-21grep08:00:132
2676099170,16cyclictest19687-21fschecks_count08:50:152
2676099170,16cyclictest14533-21apt-config12:30:022
2676099170,16cyclictest11107-21expr08:35:132
2675999172,1cyclictest21-21ksoftirqd/109:36:511
26759991714,2cyclictest7704-21/usr/sbin/munin11:20:181
26759991714,2cyclictest7704-21/usr/sbin/munin11:20:171
26759991714,2cyclictest6192-21apache_volume10:20:131
26759991714,2cyclictest3981-21H222:10:211
26759991714,2cyclictest3981-21H222:10:211
26759991714,2cyclictest3981-21H222:10:211
26759991714,2cyclictest3981-21H222:10:211
26759991714,2cyclictest3979-21H222:10:211
26759991714,2cyclictest24592-21nfsd409:55:181
26759991714,2cyclictest24527-21ntp_states10:50:191
26759991714,2cyclictest20998-21df_inode10:45:131
26759991714,2cyclictest17942-21apache_processe09:45:121
26759991714,2cyclictest16235-21expr11:35:141
26759991714,2cyclictest14482-21apt-config12:30:021
26759991714,1cyclictest0-21swapper/107:45:141
2675999171,1cyclictest21865-21nfsd409:50:171
2675999171,15cyclictest10018-21needreboot12:20:161
2675999171,15cyclictest0-21swapper/108:55:131
2675999170,2cyclictest3985-21H222:10:211
2675999170,2cyclictest3976-21H222:10:211
2675999170,2cyclictest29563-21sessionclean09:09:011
2675999170,2cyclictest28790-21tr11:00:121
2675999170,2cyclictest2876-21wc12:09:591
2675999170,2cyclictest17591-21expr07:50:131
2675999170,16cyclictest4035-21H222:10:211
2675999170,16cyclictest3987-21H222:10:211
2675999170,16cyclictest3987-21H222:10:211
2675999170,16cyclictest3985-21H222:10:211
2675999170,16cyclictest3981-21H222:10:211
2675999170,16cyclictest3979-21H222:10:211
2675999170,16cyclictest3976-21H222:10:211
2675999170,16cyclictest32186-40apt-check10:10:051
2675999170,16cyclictest30149-21apache_processe09:10:121
2675999170,16cyclictest2911-21uname11:10:171
2675999170,16cyclictest2898-21cpuspeed_turbos10:15:161
2675999170,16cyclictest25854-21apache_accesses10:55:101
2675999170,16cyclictest21481-21date11:45:011
2675999170,16cyclictest1085-21gdbus10:00:211
26758991715,1cyclictest0-21swapper/012:17:240
26758991715,1cyclictest0-21swapper/008:25:010
26758991714,2cyclictest4099-21H222:10:210
26758991714,2cyclictest3989-21H222:10:210
26758991714,2cyclictest3989-21H222:10:210
26758991714,2cyclictest3987-21H222:10:210
26758991714,2cyclictest3983-21H222:10:210
26758991714,2cyclictest27277-21cpu09:05:120
26758991714,2cyclictest25853-21apache_accesses10:55:090
26758991714,2cyclictest25478-21cpuspeed_turbos08:05:140
26758991714,2cyclictest23382-21apache_processe09:55:100
26758991714,2cyclictest16172-21ntpq10:35:170
26758991714,2cyclictest10680-21apache_volume08:35:130
26758991714,2cyclictest1003-21expr09:15:150
26758991713,3cyclictest399-20systemd-journal11:38:580
26758991713,3cyclictest3985-21H222:10:210
2675899171,2cyclictest4035-21H222:10:210
2675899171,1cyclictest0-21swapper/007:15:220
2675899171,15cyclictest9-21ksoftirqd/009:10:240
2675899170,2cyclictest3989-21H222:10:210
2675899170,2cyclictest3976-21H222:10:210
2675899170,2cyclictest29801-21readlink08:10:210
2675899170,2cyclictest22051-21postgres09:50:190
2675899170,2cyclictest20406-21grep11:40:200
2675899170,2cyclictest17825-21tr10:40:140
2675899170,2cyclictest16561-21sort12:30:200
2675899170,2cyclictest10071-21nfsd412:20:180
2675899170,1cyclictest4099-21H222:10:210
2675899170,16cyclictest9560-21apache_processe09:30:100
2675899170,16cyclictest4099-21H222:10:210
2675899170,16cyclictest4099-21H222:10:210
2675899170,16cyclictest3991-21H222:10:210
2675899170,16cyclictest3987-21H222:10:210
2675899170,16cyclictest3983-21H222:10:210
2675899170,16cyclictest27467-21expr07:10:130
2675899170,16cyclictest23227-21cpuspeed_turbos10:50:130
2675899170,16cyclictest22777-21cat10:50:000
2675899170,16cyclictest1918-21apache_accesses11:10:110
2675899170,15cyclictest3981-21H222:10:210
26759991614,1cyclictest0-21swapper/111:55:151
26759991614,1cyclictest0-21swapper/110:30:121
26759991614,1cyclictest0-21swapper/110:05:131
2675999160,15cyclictest0-21swapper/108:00:161
2675899160,1cyclictest0-21swapper/010:10:190
2675899160,15cyclictest4099-21H222:10:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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