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2026-06-30 - 10:53
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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 Tue Jun 30, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10023993331,2cyclictest0-21swapper/019:30:160
10033992617,9cyclictest0-21swapper/223:26:412
10033992414,0cyclictest0-21swapper/200:20:172
1002399230,0cyclictest0-21swapper/023:50:160
10033992119,1cyclictest19047-21apache_processe00:10:152
1002999215,15cyclictest21-21ksoftirqd/119:24:421
1002999215,15cyclictest21-21ksoftirqd/119:24:421
10029992115,3cyclictest0-21swapper/123:10:011
1002999210,0cyclictest0-21swapper/123:53:591
10033992020,0cyclictest0-21swapper/221:03:332
10033992020,0cyclictest0-21swapper/200:30:222
10033992019,1cyclictest20403-21kworker/2:121:56:162
10033992016,3cyclictest0-21swapper/200:00:012
1002999204,7cyclictest0-21swapper/123:12:421
10029992018,2cyclictest0-21swapper/121:03:331
1002399206,13cyclictest0-21swapper/022:12:360
1002399204,15cyclictest15297-21expr20:15:120
10023992016,3cyclictest0-21swapper/000:21:170
10023992016,1cyclictest0-21swapper/020:49:160
10023992015,2cyclictest10128-21grep22:00:010
10023992012,4cyclictest0-21swapper/022:00:520
1003399192,1cyclictest0-21swapper/222:10:192
10033991919,0cyclictest0-21swapper/220:58:392
10033991917,1cyclictest0-21swapper/221:52:542
10033991917,1cyclictest0-21swapper/221:52:532
10033991915,1cyclictest0-21swapper/220:05:182
1003399190,1cyclictest352-21jbd2/nvme0n1p2-23:14:562
1003399190,16cyclictest4099-21H222:10:212
1002999192,2cyclictest17261-21nfsd400:05:241
1002999192,16cyclictest30306-21https00:30:001
10029991915,3cyclictest0-21swapper/119:52:551
1002999190,2cyclictest4035-21H222:10:211
1002999190,16cyclictest3987-21H222:10:211
1002399193,15cyclictest24766-21latency_hist23:25:010
1002399192,16cyclictest6408-21cat20:00:020
1002399192,16cyclictest1182-21sed22:40:170
1002399192,16cyclictest0-21swapper/020:00:230
1002399192,16cyclictest0-21swapper/019:51:570
10023991919,0cyclictest0-21swapper/022:05:170
10023991917,1cyclictest0-21swapper/000:10:180
10023991916,2cyclictest3105-21expr21:45:190
10023991916,2cyclictest18658-21if_lxdbr020:20:180
10023991914,3cyclictest3991-21H222:10:210
1002399190,2cyclictest3981-21H222:10:210
1002399190,18cyclictest843-21systemd-network21:54:370
1002399190,18cyclictest843-21systemd-network21:54:360
1002399190,18cyclictest15870-21sed19:20:000
1002399190,18cyclictest0-21swapper/020:27:540
1002399190,16cyclictest3981-21H222:10:210
10033991816,1cyclictest28-21ksoftirqd/200:28:282
10033991816,1cyclictest0-21swapper/200:38:502
10033991815,2cyclictest4099-21H222:10:212
10033991815,2cyclictest21316-21/usr/sbin/munin22:20:122
10033991815,2cyclictest1474-21ntp_offset22:40:192
10033991814,3cyclictest4035-21H222:10:212
1003399181,16cyclictest4753-21cpuspeed_turbos23:45:142
1003399181,16cyclictest1085-21gdbus19:20:232
1003399181,16cyclictest1085-21gdbus19:20:222
1003399180,3cyclictest3450-21gsd-color23:15:182
1003399180,2cyclictest4035-21H222:10:212
1003399180,2cyclictest3989-21H222:10:212
1003399180,17cyclictest399-20systemd-journal22:55:262
1003399180,16cyclictest4035-21H222:10:212
1003399180,16cyclictest3985-21H222:10:212
10029991816,1cyclictest23061-21ntp_offset19:30:191
10029991816,1cyclictest0-21swapper/119:28:591
10029991814,3cyclictest22562-21awk22:20:171
1002999181,2cyclictest3985-21H222:10:211
1002999181,2cyclictest14776-21munin-run20:15:011
1002999180,3cyclictest870-21systemd-logind23:48:521
1002999180,3cyclictest689-21apt-get23:40:001
1002999180,2cyclictest3987-21H222:10:211
1002999180,16cyclictest4099-21H222:10:211
1002999180,16cyclictest0-21swapper/120:48:311
1002999180,15cyclictest3987-21H222:10:211
1002399183,1cyclictest0-21swapper/023:25:130
1002399182,15cyclictest4035-21H222:10:210
1002399182,15cyclictest3990-21H222:10:210
1002399182,15cyclictest22434-21cstates00:15:100
1002399182,15cyclictest13786-21cat00:00:140
1002399182,15cyclictest123982chrt23:59:250
10023991818,0cyclictest0-21swapper/023:15:430
10023991818,0cyclictest0-21swapper/021:00:390
10023991816,1cyclictest27041-21cstates22:30:140
10023991816,1cyclictest0-21swapper/019:37:320
10023991815,2cyclictest6128-21sort20:55:150
10023991815,2cyclictest29271-21apache_processe20:40:120
10023991814,3cyclictest4099-21H222:10:210
10023991813,2cyclictest4035-21H222:10:210
10023991812,5cyclictest0-21swapper/022:55:010
1002399181,16cyclictest3067-21expr20:50:160
1002399181,16cyclictest2121-21uname00:35:170
1002399181,16cyclictest16479-21cstates19:20:150
1002399181,16cyclictest16479-21cstates19:20:150
1002399181,16cyclictest11728-21sessionclean20:09:000
1002399181,16cyclictest0-21swapper/019:41:350
1002399180,2cyclictest3981-21H222:10:210
1002399180,17cyclictest0-21swapper/021:40:140
1002399180,17cyclictest0-21swapper/021:15:190
1003399179,4cyclictest0-21swapper/221:21:372
10033991717,0cyclictest0-21swapper/223:05:142
10033991714,2cyclictest464-21irqstats20:45:152
10033991714,2cyclictest4350-21perf21:50:012
10033991714,2cyclictest4202-21missed_timers22:45:152
10033991714,2cyclictest32691-21nvmesmart_nvme021:40:192
10033991714,2cyclictest30596-21missed_timers22:35:182
10033991714,2cyclictest29288-21irqstats21:35:172
10033991714,2cyclictest26443-21cpuspeed_turbos20:35:132
10033991714,2cyclictest24065-21apache_processe22:25:122
10033991714,2cyclictest22460-21apache_volume21:25:132
10033991714,2cyclictest22174-21apache_processe00:15:092
10033991714,2cyclictest19155-21df22:15:142
10033991714,2cyclictest13960-21cat00:00:152
10033991714,2cyclictest13387-21expr22:05:152
10033991714,2cyclictest12338-21ntp_states21:05:182
10033991712,1cyclictest0-21swapper/223:37:452
1003399171,15cyclictest28-21ksoftirqd/200:05:102
1003399170,2cyclictest8166-21processes20:00:212
1003399170,2cyclictest7421-21apache_accesses23:50:102
1003399170,2cyclictest3985-21H222:10:212
1003399170,2cyclictest2963-21awk23:40:172
1003399170,2cyclictest28938-21switchtime19:40:212
1003399170,2cyclictest23980-21latency_hist19:35:012
1003399170,2cyclictest13863-21sendmail_mailtr20:10:202
1003399170,16cyclictest5592-21cat19:55:212
1003399170,16cyclictest3989-21H222:10:212
1003399170,16cyclictest3981-21H222:10:212
1003399170,16cyclictest31443-21nvmesmart_nvme019:45:192
1003399170,16cyclictest3086-21postgres19:14:522
1003399170,16cyclictest28454-21switchtime22:30:212
1003399170,16cyclictest20349-21grep19:25:202
1003399170,16cyclictest16982-21apache_processe21:15:132
1003399170,16cyclictest15484-21nfsd421:10:192
1003399170,16cyclictest12058-21hddtemp_smartct23:00:152
1003399170,16cyclictest10196-21taskset22:00:022
1003399170,15cyclictest3979-21H222:10:212
1002999172,14cyclictest21-21ksoftirqd/121:38:351
10029991715,2cyclictest0-21swapper/122:55:491
10029991714,2cyclictest9757-21chrt21:59:521
10029991714,2cyclictest863-21avahi-daemon19:10:221
10029991714,2cyclictest455-21plymouthd23:15:141
10029991714,2cyclictest3053-21systemd-logind22:16:511
10029991714,2cyclictest27483-21hddtemp_smartct22:30:141
10029991714,2cyclictest18909-21/usr/sbin/munin21:15:241
10029991714,2cyclictest13478-21df_inode00:00:121
10029991714,2cyclictest11191-21cstates21:05:141
10029991714,2cyclictest0-21swapper/122:45:161
10029991713,3cyclictest3985-21H222:10:211
1002999170,2cyclictest3991-21H222:10:211
1002999170,2cyclictest3979-21H222:10:211
1002999170,2cyclictest27019-21fschecks_time20:35:141
1002999170,2cyclictest23876-21expr20:30:141
1002999170,2cyclictest10565-21expr22:00:141
1002999170,16cyclictest6730-21seq21:50:471
1002999170,16cyclictest6730-21seq21:50:471
1002999170,16cyclictest4727-21/usr/sbin/munin19:55:161
1002999170,16cyclictest4099-21H222:10:211
1002999170,16cyclictest3991-21H222:10:211
1002999170,16cyclictest3991-21H222:10:211
1002999170,16cyclictest3987-21H222:10:211
1002999170,16cyclictest3981-21H222:10:211
1002999170,16cyclictest29643-21expr20:40:151
1002999170,16cyclictest24036-21sed00:15:191
1002999170,16cyclictest23006-21ls23:20:131
1002999170,16cyclictest22808-21expr21:25:141
1002999170,16cyclictest21195-21ps21:20:201
1002999170,16cyclictest15695-21fschecks_time20:15:121
1002999170,16cyclictest13751-21date23:05:001
1002999170,16cyclictest0-21swapper/119:37:041
1002999170,15cyclictest3991-21H222:10:211
1002999170,0cyclictest0-21swapper/121:14:401
10023991715,1cyclictest11534-21cpuspeed_turbos23:00:120
10023991715,1cyclictest0-21swapper/022:35:030
10023991714,2cyclictest32044-21chrt19:46:160
10023991714,2cyclictest30704-21apt-config00:30:000
10023991714,2cyclictest28361-21cstates23:30:120
10023991714,2cyclictest23889-21cstates20:30:140
10023991714,2cyclictest13976-21gpg-connect-age21:10:020
1002399171,1cyclictest11254-21expr21:05:140
1002399171,1cyclictest0-21swapper/021:20:140
1002399170,2cyclictest28129-21cstates00:25:140
1002399170,2cyclictest25664-21cat21:30:130
1002399170,2cyclictest22446-21cat21:25:120
1002399170,2cyclictest12364-21chrt19:11:330
1002399170,16cyclictest8909-21cat22:55:120
1002399170,16cyclictest32587-21chrt23:35:230
1002399170,16cyclictest27144-21awk20:35:160
1002399170,16cyclictest17889-21interrupts23:10:160
1002399170,16cyclictest14540-21ls23:05:130
1002399170,16cyclictest12335-21cpuspeed_turbos20:10:130
10033991614,1cyclictest24208-21df20:30:142
1003399160,1cyclictest0-21swapper/220:25:582
10029991614,1cyclictest0-21swapper/122:40:121
10029991614,1cyclictest0-21swapper/120:25:021
10029991614,1cyclictest0-21swapper/120:05:171
10029991613,2cyclictest6432-21expr22:50:151
10029991613,2cyclictest29482-21chrt22:35:081
10029991613,2cyclictest28999-21missed_timers23:30:161
1002999160,1cyclictest0-21swapper/122:10:131
1002999160,15cyclictest455-21plymouthd00:20:101
1002999160,15cyclictest3981-21H222:10:211
1002999160,15cyclictest0-21swapper/100:30:011
1002399160,15cyclictest0-21swapper/022:25:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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