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2026-09-11 - 23:02
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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 Sep 11, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1547399280,23cyclictest0-21swapper/010:13:280
1547399250,1cyclictest0-21swapper/008:35:130
1547399232,20cyclictest320672sleep012:23:550
1547399230,2cyclictest24805-21cstates12:10:180
1547399230,2cyclictest24805-21cstates12:10:180
1547399230,2cyclictest17020-21gpgv08:10:000
1547399220,2cyclictest30899-21expr09:30:150
1547399220,2cyclictest25109-21apport08:25:010
1547399220,21cyclictest17767-21munin-plugin-st10:05:010
1547399220,1cyclictest3737-21smartctl08:40:160
1547399220,16cyclictest7238-21cat09:45:140
1547399220,16cyclictest12625-21wc11:50:000
1547399220,15cyclictest9752-21netstat08:50:170
15479992118,2cyclictest1577-21cpuspeed_turbos11:30:202
15473992114,6cyclictest29468-21sendmail_mailtr09:25:210
1547399211,2cyclictest13112-21fschecks_time09:55:150
1547399210,2cyclictest4874-21/usr/sbin/munin12:30:260
1547399210,2cyclictest32327-21awk11:25:160
1547399210,20cyclictest0-21swapper/010:20:580
1547399210,1cyclictest0-21swapper/012:00:140
1547399210,1cyclictest0-21swapper/007:45:160
1547399210,1cyclictest0-21swapper/007:20:140
1547399210,1cyclictest0-21swapper/007:20:140
1547399210,16cyclictest21643-21awk08:15:200
1547399210,16cyclictest19367-21chrt08:11:350
1547399210,16cyclictest13047-21sed08:00:210
1547399210,15cyclictest276822chrt11:17:320
1547399210,15cyclictest18636-21hddtemp_smartct10:05:150
1547399210,15cyclictest0-21swapper/011:35:120
1547399210,15cyclictest0-21swapper/009:22:260
1547399210,15cyclictest0-21swapper/008:55:180
1547399210,15cyclictest0-21swapper/007:56:330
1547399210,14cyclictest0-21swapper/008:30:160
15479992014,5cyclictest0-21swapper/207:45:172
1547999200,17cyclictest0-21swapper/212:05:162
15473992014,5cyclictest6795-21/usr/sbin/munin07:50:160
15473992014,5cyclictest24653-21timerandwakeup11:10:200
15473992014,5cyclictest133432sleep010:51:200
15473992014,5cyclictest0-21swapper/011:20:140
15473992014,5cyclictest0-21swapper/009:18:170
15473992013,6cyclictest0-21swapper/010:40:020
15473992012,7cyclictest32593-21apt12:25:110
1547399200,2cyclictest3987-21H222:10:210
1547399200,1cyclictest63532chrt09:42:250
1547399200,1cyclictest15954-21tr07:10:140
1547399200,1cyclictest0-21swapper/011:05:130
1547399200,19cyclictest2212-21/usr/sbin/munin11:30:220
1547399200,19cyclictest0-21swapper/011:55:130
1547399200,19cyclictest0-21swapper/011:50:140
1547399200,19cyclictest0-21swapper/010:56:140
1547399200,19cyclictest0-21swapper/009:05:110
1547399200,19cyclictest0-21swapper/009:05:110
1547399200,19cyclictest0-21swapper/007:40:180
1547399200,16cyclictest0-21swapper/009:10:170
1547399200,15cyclictest31147-21chrt10:27:500
1547399200,15cyclictest0-21swapper/010:30:210
1547399200,15cyclictest0-21swapper/007:35:190
1547399200,14cyclictest0-21swapper/007:30:130
1547999192,2cyclictest7288-21processes08:45:202
15474991917,1cyclictest0-21swapper/111:05:141
15473991914,4cyclictest16968-21expr11:00:140
15473991914,4cyclictest0-21swapper/010:50:010
15473991914,4cyclictest0-21swapper/009:50:210
15473991914,4cyclictest0-21swapper/008:25:110
15473991913,5cyclictest0-21swapper/010:35:160
15473991912,6cyclictest470-21cron09:35:000
15473991912,6cyclictest23960-21munin-run12:09:590
1547399190,1cyclictest0-21swapper/012:15:150
1547399190,1cyclictest0-21swapper/010:15:120
1547399190,18cyclictest0-21swapper/012:35:190
1547399190,18cyclictest0-21swapper/011:40:210
1547999182,15cyclictest3989-21H222:10:212
15479991815,2cyclictest5722-21nfsd411:35:172
15479991815,2cyclictest11307-21plymouth09:50:252
15479991814,3cyclictest4099-21H222:10:212
1547999180,17cyclictest15945-21lxd10:40:432
1547499182,15cyclictest0-21swapper/111:36:271
15474991815,2cyclictest5801-21/usr/sbin/munin08:45:111
15474991814,3cyclictest7402-21systemctl07:50:201
1547499181,1cyclictest0-21swapper/112:34:591
1547499181,16cyclictest0-21swapper/107:49:521
1547499180,2cyclictest3979-21H222:10:211
1547499180,17cyclictest0-21swapper/110:10:331
15473991813,5cyclictest0-21swapper/008:48:460
15479991715,1cyclictest0-21swapper/212:13:152
15479991715,1cyclictest0-21swapper/212:13:152
15479991715,1cyclictest0-21swapper/211:40:132
15479991715,1cyclictest0-21swapper/209:45:242
15479991714,2cyclictest399-20systemd-journal07:28:312
15479991714,2cyclictest28300-21/usr/sbin/munin11:20:162
15479991714,2cyclictest25660-21cpuspeed_turbos11:15:112
15479991714,2cyclictest0-21swapper/209:30:242
1547999171,15cyclictest19291-21taskset08:10:332
1547999171,15cyclictest12053-21if_eno108:55:152
1547999171,15cyclictest0-21swapper/209:35:262
1547999170,2cyclictest853-21pzem_current10:30:202
1547999170,2cyclictest31758-21chrt07:39:002
1547999170,2cyclictest29134-21awk09:25:182
1547999170,2cyclictest2672-21date07:45:002
1547999170,2cyclictest16766-21apt-config08:10:012
1547999170,2cyclictest14505-21snapd09:40:272
1547999170,2cyclictest12522-21cut08:00:172
1547999170,2cyclictest10169-21plymouth10:45:202
1547999170,1cyclictest0-21swapper/212:00:002
1547999170,16cyclictest3985-21H222:10:212
1547999170,16cyclictest3972-21fschecks_time12:30:192
1547999170,16cyclictest25371-21python308:25:012
1547999170,16cyclictest25347-21grep09:20:132
1547999170,16cyclictest22466-21nfsd407:20:182
1547999170,16cyclictest22466-21nfsd407:20:172
1547999170,16cyclictest19754-21awk12:00:182
1547999170,16cyclictest14030-21/usr/sbin/munin10:55:122
1547999170,16cyclictest1348-21lxd08:28:442
1547999170,16cyclictest11611-21expr10:50:152
1547999170,16cyclictest11465-21cut11:45:172
1547999170,16cyclictest0-21swapper/209:55:182
15474991714,2cyclictest4099-21H222:10:211
15474991714,2cyclictest29626-21runrttasks10:25:131
15474991714,2cyclictest26604-21sed11:15:151
15474991714,2cyclictest24639-21grep07:25:151
15474991714,2cyclictest22744-21awk12:05:161
15474991714,2cyclictest19144-21awk10:05:161
15474991714,2cyclictest18219-21awk08:10:171
15474991714,2cyclictest17972-21chrt07:13:361
15474991714,2cyclictest13863-21munin-run09:00:001
15474991714,2cyclictest12844-21chrt11:50:091
1547499171,1cyclictest0-21swapper/112:25:141
1547499170,2cyclictest8189-21nfsd409:45:181
1547499170,2cyclictest29495-21cpuspeed_turbos07:35:151
1547499170,2cyclictest26687-21expr08:25:141
1547499170,2cyclictest23235-21chrt07:20:501
1547499170,2cyclictest23235-21chrt07:20:501
1547499170,2cyclictest14506-21snapd09:57:581
1547499170,2cyclictest11550-21cat08:00:121
1547499170,1cyclictest3989-21H222:10:211
1547499170,16cyclictest9147-21grep11:40:201
1547499170,16cyclictest5544-21grep09:40:181
1547499170,16cyclictest4476-21ntpq08:40:191
1547499170,16cyclictest4102-21perf11:35:001
1547499170,16cyclictest30524-21/usr/sbin/munin08:30:211
1547499170,16cyclictest28150-21cstates09:25:121
1547499170,16cyclictest27916-21nfsd407:30:191
1547499170,16cyclictest26955-21fschecks_time10:20:151
1547499170,16cyclictest22558-21grep09:15:141
1547499170,16cyclictest20050-21sendmail_mailqu07:15:201
1547499170,16cyclictest19725-21cut12:00:161
1547499170,16cyclictest16240-21smtp08:08:481
1547499170,16cyclictest15945-21lxd09:32:441
1547499170,16cyclictest15892-21snapd09:23:041
1547499170,16cyclictest1522-21lxd09:02:441
1547499170,16cyclictest1154-21cat11:30:001
1547499170,16cyclictest1138-21needreboot07:40:171
1547499170,16cyclictest11097-21ntp_offset09:50:231
1547499170,16cyclictest1079-21cups-browsed09:10:191
1547499170,16cyclictest10104-21mailstats08:50:201
1547499170,16cyclictest10017-21nvmesmart_nvme010:45:171
1547399170,0cyclictest0-21swapper/009:00:210
15479991614,1cyclictest29839-21/usr/sbin/munin12:20:172
15479991614,1cyclictest0-21swapper/212:15:192
15479991614,1cyclictest0-21swapper/211:50:172
15479991614,1cyclictest0-21swapper/210:15:122
15479991614,1cyclictest0-21swapper/210:10:182
15479991614,1cyclictest0-21swapper/209:10:132
15479991614,1cyclictest0-21swapper/209:00:222
15479991614,1cyclictest0-21swapper/208:35:182
15479991614,1cyclictest0-21swapper/207:50:132
15479991614,1cyclictest0-21swapper/207:15:132
15479991613,2cyclictest17627-21/usr/sbin/munin11:00:162
1547999160,2cyclictest2360-21cpuspeed_turbos10:35:152
1547999160,1cyclictest0-21swapper/211:10:162
1547999160,1cyclictest0-21swapper/209:05:172
1547999160,1cyclictest0-21swapper/209:05:162
1547999160,1cyclictest0-21swapper/208:30:162
1547999160,15cyclictest7053-21cat12:35:162
1547999160,15cyclictest32563-21/usr/sbin/munin12:25:192
1547999160,15cyclictest0-21swapper/211:25:122
1547999160,15cyclictest0-21swapper/211:05:122
1547999160,15cyclictest0-21swapper/210:05:162
1547999160,15cyclictest0-21swapper/210:00:132
1547999160,15cyclictest0-21swapper/209:15:212
1547999160,15cyclictest0-21swapper/208:50:122
1547999160,15cyclictest0-21swapper/208:40:182
1547999160,15cyclictest0-21swapper/208:15:002
1547999160,15cyclictest0-21swapper/207:55:162
1547999160,15cyclictest0-21swapper/207:30:182
15474991614,1cyclictest0-21swapper/112:20:121
15474991614,1cyclictest0-21swapper/112:10:221
15474991614,1cyclictest0-21swapper/112:10:221
15474991614,1cyclictest0-21swapper/111:00:221
15474991614,1cyclictest0-21swapper/110:55:191
15474991614,1cyclictest0-21swapper/110:50:131
15474991614,1cyclictest0-21swapper/110:35:161
15474991613,2cyclictest9359-21if_enp1s007:55:171
15474991613,2cyclictest6217-21fschecks_time10:40:151
15474991613,2cyclictest17017-21ntpq11:55:181
1547499160,1cyclictest21454-21ntpq08:15:191
1547499160,1cyclictest0-21swapper/111:20:211
1547499160,15cyclictest6069-21cpu12:35:121
1547499160,15cyclictest455-21plymouthd09:05:221
1547499160,15cyclictest455-21plymouthd09:05:211
1547499160,15cyclictest28511-21ntpq12:15:181
1547499160,15cyclictest0-21swapper/110:30:131
1547499160,15cyclictest0-21swapper/110:00:141
1547499160,15cyclictest0-21swapper/109:35:171
1547499160,15cyclictest0-21swapper/108:35:001
1547499160,15cyclictest0-21swapper/108:20:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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