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2026-07-17 - 15:08
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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 Fri Jul 17, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2272499310,0cyclictest0-21swapper/123:05:141
22718993027,2cyclictest14550-21snapd21:45:280
22724992724,2cyclictest31808-21python321:20:001
2272499242,20cyclictest16833-21grep19:55:121
2272999230,22cyclictest0-21swapper/222:24:432
2272999230,22cyclictest0-21swapper/221:33:482
2272999230,18cyclictest16089-21nfsd400:35:182
2272999214,16cyclictest0-21swapper/220:38:382
22718992119,1cyclictest20057-21kworker/0:021:20:010
22729992018,1cyclictest0-21swapper/222:03:352
22729992017,2cyclictest30625-21plymouth22:10:212
22729992016,3cyclictest3339-21ls20:30:012
22729992016,3cyclictest3339-21ls20:30:002
22729992014,5cyclictest0-21swapper/222:05:152
22729992014,3cyclictest0-21swapper/200:30:222
22729992013,6cyclictest843-21systemd-network00:14:152
2272499204,15cyclictest0-21swapper/120:47:511
2271899202,15cyclictest0-21swapper/023:40:180
2272999192,16cyclictest0-21swapper/220:22:282
22729991917,1cyclictest0-21swapper/219:35:132
22729991915,3cyclictest0-21swapper/220:40:182
22729991915,2cyclictest21211-21nfsd422:50:202
22729991914,3cyclictest14106-21tr19:50:132
2272999191,3cyclictest0-21swapper/220:55:202
2272999190,4cyclictest20777-21nvmesmart_nvme020:00:202
2272999190,17cyclictest2631-21python321:25:012
2272499193,15cyclictest0-21swapper/123:21:351
2272499193,15cyclictest0-21swapper/119:26:211
22724991916,2cyclictest903-21lxcfs00:07:521
22724991916,2cyclictest0-21swapper/119:23:561
2272499190,1cyclictest0-21swapper/121:28:591
2271899193,15cyclictest23613-21wc21:05:020
2271899193,15cyclictest0-21swapper/023:32:400
2271899192,15cyclictest0-21swapper/019:45:000
22718991917,1cyclictest0-21swapper/023:25:110
22718991915,3cyclictest0-21swapper/021:25:180
22729991816,1cyclictest4788-21missed_timers21:25:172
22729991816,1cyclictest0-21swapper/219:30:182
22729991815,2cyclictest13795-21nfsd421:40:182
22729991815,2cyclictest13795-21nfsd421:40:172
22729991813,3cyclictest0-21swapper/219:41:042
2272999180,3cyclictest29390-21nfsd423:05:182
2272999180,16cyclictest3058-21rs:main2
2272999180,16cyclictest21460-21smtp23:50:032
2272499182,2cyclictest26207-21grep20:10:171
2272499182,15cyclictest0-21swapper/123:15:211
2272499180,17cyclictest24399-21grep23:55:131
2272499180,16cyclictest7938-21munin-run19:40:001
2271899182,15cyclictest31338-21switchtime00:05:260
2271899182,11cyclictest7608-21perf19:40:010
22718991815,2cyclictest6463-21nfsd422:25:180
22718991815,2cyclictest26157-21http_loadtime23:00:160
2271899181,2cyclictest23499-21ntp_offset20:05:200
2271899181,16cyclictest4507-21bounce23:20:040
2271899180,4cyclictest0-21swapper/019:27:310
2271899180,1cyclictest0-21swapper/023:10:230
22729991716,1cyclictest0-21swapper/220:33:342
22729991715,1cyclictest0-21swapper/223:55:082
22729991714,2cyclictest8526-21perf00:25:012
22729991714,2cyclictest7264-21apache_processe23:25:132
22729991714,2cyclictest3981-21H222:10:212
22729991714,2cyclictest29222-21munin-run21:15:002
22729991714,2cyclictest29180-21chrt00:03:542
22729991714,2cyclictest22806-21fschecks_time20:05:152
22729991714,2cyclictest14504-21snapd23:20:252
22729991714,2cyclictest1448-21apt-get23:15:122
22729991714,2cyclictest14446-21grep23:35:182
22729991714,2cyclictest13336-21chrt19:48:372
22729991714,2cyclictest10436-21missed_timers00:25:172
2272999171,15cyclictest30247-21timerandwakeup19:20:202
2272999171,15cyclictest0-21swapper/223:00:152
2272999170,3cyclictest17966-21awk19:55:182
2272999170,2cyclictest22672-21apache_processe22:55:122
2272999170,2cyclictest21135-21cpuspeed_turbos21:00:142
2272999170,2cyclictest18939-21cpuspeed_turbos23:45:142
2272999170,2cyclictest14505-21snapd22:25:582
2272999170,2cyclictest14061-21apache_accesses22:40:122
2272999170,16cyclictest7634-21python322:30:012
2272999170,16cyclictest30194-21perf20:20:012
2272999170,16cyclictest2045-21latency_hist22:20:002
2272999170,16cyclictest20369-21cut21:55:012
2272999170,16cyclictest15995-21if_eno121:45:182
2272999170,16cyclictest15911-21expr20:50:132
2272999170,16cyclictest13207-21expr20:45:142
2272999170,16cyclictest11840-21http_loadtime22:35:152
2272999170,16cyclictest11353-21ionclean21:38:592
2272999170,16cyclictest10205-21gpg-connect-age23:30:012
2272999170,16cyclictest0-21swapper/223:40:182
22724991714,2cyclictest32297-21gpgv21:20:011
22724991714,2cyclictest22401-21irqstats23:50:171
22724991714,2cyclictest18483-21expr21:50:141
22724991714,2cyclictest14608-21processes23:35:211
22724991714,2cyclictest14506-21snapd20:30:451
22724991714,2cyclictest0-21swapper/123:40:171
22724991714,2cyclictest0-21swapper/100:15:131
22724991714,1cyclictest0-21swapper/122:20:131
22724991713,3cyclictest1-21systemd22:55:181
2272499171,15cyclictest14069-21apt-get22:40:131
2272499171,15cyclictest0-21swapper/122:05:131
2272499171,15cyclictest0-21swapper/120:15:071
2272499170,2cyclictest7509-21nfsd400:20:181
2272499170,2cyclictest662-21cstates00:10:141
2272499170,2cyclictest27739-21grep23:05:011
2272499170,2cyclictest25345-21mailstats21:05:221
2272499170,2cyclictest12195-21grep00:30:121
2272499170,16cyclictest9971-21apt-key23:30:011
2272499170,16cyclictest3989-21H222:10:211
2272499170,16cyclictest23691-21munin-run21:05:011
2272499170,16cyclictest23603-21expr19:10:141
2272499170,16cyclictest1829-21systemd-journal19:42:301
2272499170,16cyclictest11995-21python320:45:001
2272499170,16cyclictest10867-21pzem_energy00:25:201
2272499170,15cyclictest0-21swapper/120:00:141
22718991715,1cyclictest22705-21nfsd423:50:190
22718991715,1cyclictest0-21swapper/021:43:000
22718991715,1cyclictest0-21swapper/021:42:590
22718991715,1cyclictest0-21swapper/021:35:550
22718991715,1cyclictest0-21swapper/020:45:000
22718991714,2cyclictest6667-21apache_accesses20:35:120
22718991714,2cyclictest455-21plymouthd19:10:190
22718991714,2cyclictest3594-21grep19:30:180
22718991714,2cyclictest23995-21df22:00:150
22718991714,2cyclictest22197-21postgres22:54:350
22718991714,2cyclictest2207-21apache_processe22:20:120
22718991714,2cyclictest21960-21nfsd421:55:190
22718991714,2cyclictest19082-21sed22:45:240
22718991714,2cyclictest15138-21chrt23:36:050
22718991714,2cyclictest11496-21/usr/sbin/munin20:40:220
22718991712,1cyclictest0-21swapper/021:31:390
2271899170,3cyclictest20625-21awk20:00:180
2271899170,2cyclictest9162-21https00:25:020
2271899170,2cyclictest7634-21python322:30:010
2271899170,2cyclictest31055-21df20:20:150
2271899170,2cyclictest28435-21cat21:10:210
2271899170,2cyclictest25917-21uname20:10:170
2271899170,2cyclictest24908-21taskset22:59:130
2271899170,2cyclictest1637-21ntp_states21:20:190
2271899170,16cyclictest786-21apache_volume20:25:130
2271899170,16cyclictest786-21apache_volume20:25:120
2271899170,16cyclictest6545-21cstates00:20:130
2271899170,16cyclictest455-21plymouthd20:50:150
2271899170,16cyclictest4137-21grep20:30:140
2271899170,16cyclictest3992-21H222:10:210
2271899170,16cyclictest28281-21nfsd400:00:190
2271899170,16cyclictest27702-21/usr/sbin/munin20:15:120
2271899170,16cyclictest26149-21apache_processe22:05:110
2271899170,16cyclictest24243-21dpkg23:55:130
2271899170,16cyclictest16838-21cpuspeed_turbos19:55:120
2271899170,16cyclictest14836-21apache_processe00:35:110
2271899170,16cyclictest1377-21lxd21:52:490
2271899170,16cyclictest0-21swapper/000:30:120
22729991614,1cyclictest0-21swapper/221:15:112
22729991614,1cyclictest0-21swapper/221:05:122
22729991614,1cyclictest0-21swapper/220:10:172
22729991614,1cyclictest0-21swapper/219:10:152
22729991614,1cyclictest0-21swapper/200:15:162
22729991614,1cyclictest0-21swapper/200:05:172
22729991613,2cyclictest26091-21expr19:15:142
22729991613,2cyclictest17583-21expr22:45:152
2272999160,15cyclictest0-21swapper/221:55:172
22724991614,1cyclictest0-21swapper/122:30:011
22724991614,1cyclictest0-21swapper/121:55:181
22724991614,1cyclictest0-21swapper/121:45:041
22724991614,1cyclictest0-21swapper/121:40:011
22724991614,1cyclictest0-21swapper/121:40:011
22724991614,1cyclictest0-21swapper/121:35:571
22724991614,1cyclictest0-21swapper/121:33:011
22724991614,1cyclictest0-21swapper/120:35:141
22724991614,1cyclictest0-21swapper/119:51:001
22724991614,1cyclictest0-21swapper/119:15:121
22724991614,1cyclictest0-21swapper/100:35:131
22724991614,1cyclictest0-21swapper/100:00:221
22724991613,2cyclictest3708-21grep19:30:181
22724991613,2cyclictest22639-21expr20:05:151
2272499160,1cyclictest5784-21expr22:25:151
2272499160,1cyclictest0-21swapper/120:59:491
2272499160,15cyclictest8446-21/usr/sbin/munin23:25:191
2272499160,15cyclictest28050-21ntp_offset21:10:181
2272499160,15cyclictest20576-21fschecks_count22:50:151
2272499160,15cyclictest17165-21dpkg22:45:021
2272499160,15cyclictest0-21swapper/122:35:191
2272499160,15cyclictest0-21swapper/122:15:231
2272499160,15cyclictest0-21swapper/122:10:171
2272499160,15cyclictest0-21swapper/120:25:141
2272499160,15cyclictest0-21swapper/120:25:141
2272499160,15cyclictest0-21swapper/120:20:161
2272499160,15cyclictest0-21swapper/119:45:161
22718991614,1cyclictest1191-21nfsd20:55:050
22718991614,1cyclictest0-21swapper/022:15:150
22718991614,1cyclictest0-21swapper/019:50:220
22718991613,2cyclictest18769-21apache_accesses23:45:110
2271899160,2cyclictest3695-21cstates00:15:140
2271899160,2cyclictest23766-21find21:05:100
2271899160,15cyclictest32705-21apache_accesses00:10:120
2271899160,15cyclictest30810-21smtp19:24:590
2271899160,15cyclictest14043-21find22:40:110
2271899160,15cyclictest12009-21irqstats22:35:180
2271899160,15cyclictest0-21swapper/023:15:140
2271899160,15cyclictest0-21swapper/022:10:110
2271899160,15cyclictest0-21swapper/019:47:500
2271899160,15cyclictest0-21swapper/019:15:120
22724991513,1cyclictest0-21swapper/122:00:191
2272499150,1cyclictest0-21swapper/120:50:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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