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2026-09-01 - 18:44
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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 Tue Sep 01, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2391299240,19cyclictest7314-21fschecks_count11:25:140
2391299240,19cyclictest0-21swapper/011:15:000
2392199230,16cyclictest4036-21H222:10:212
2391299230,18cyclictest0-21swapper/011:21:300
2391699220,17cyclictest0-21swapper/111:05:151
23921992117,3cyclictest22671-21smtp09:58:022
23916992116,4cyclictest0-21swapper/108:07:371
2392199203,16cyclictest3989-21H222:10:212
23921992016,3cyclictest0-21swapper/212:13:462
2392199200,3cyclictest0-21swapper/207:46:202
2391699202,3cyclictest3370-21ls11:20:001
23916992017,2cyclictest16438-21nvmesmart_nvme011:40:201
23912992017,2cyclictest3985-21H222:10:210
2391299200,5cyclictest0-21swapper/011:15:050
23921991916,1cyclictest0-21swapper/208:50:142
23921991915,3cyclictest0-21swapper/212:29:472
23921991913,3cyclictest0-21swapper/211:34:252
2392199191,16cyclictest1829-21systemd-journal08:13:222
2392199190,3cyclictest0-21swapper/209:35:152
2392199190,2cyclictest3987-21H222:10:212
2392199190,1cyclictest0-21swapper/212:00:012
2392199190,16cyclictest4099-21H222:10:212
2392199190,16cyclictest3985-21H222:10:212
2391699194,9cyclictest21365-21munin-run10:55:001
2391699192,2cyclictest30361-21ps10:10:211
2391699192,16cyclictest6217-21chrt11:24:481
23916991917,1cyclictest0-21swapper/111:30:171
23916991914,2cyclictest3976-21H222:10:211
2391699191,2cyclictest3981-21H222:10:211
2391699190,2cyclictest3981-21H222:10:211
2391699190,18cyclictest3981-21H222:10:211
2391699190,16cyclictest3983-21H222:10:211
2391699190,16cyclictest3979-21H222:10:211
2391299193,15cyclictest12338-21timerandwakeup10:35:240
2391299193,15cyclictest0-21swapper/007:52:430
23912991916,2cyclictest30972-21php7.012:09:000
2391299191,17cyclictest2196-21cpuspeed_turbos12:15:120
2391299190,2cyclictest3976-21H222:10:210
2391299190,17cyclictest1283-21gzip08:25:010
2391299190,16cyclictest3985-21H222:10:210
2391299190,16cyclictest3983-21H222:10:210
2391299190,16cyclictest3976-21H222:10:210
2392199182,1cyclictest28-21ksoftirqd/211:15:082
23921991816,1cyclictest29037-21expr09:10:212
23921991816,1cyclictest0-21swapper/210:26:312
23921991816,1cyclictest0-21swapper/210:03:372
23921991815,2cyclictest3985-21H222:10:212
23921991814,3cyclictest4099-21H222:10:212
23921991814,3cyclictest4035-21H222:10:212
23921991814,3cyclictest3991-21H222:10:212
2392199181,16cyclictest3989-21H222:10:212
2392199181,16cyclictest0-21swapper/208:30:402
2392199180,2cyclictest3987-21H222:10:212
2392199180,2cyclictest3976-21H222:10:212
2392199180,17cyclictest3981-21H222:10:212
2392199180,17cyclictest1060-21thermald10:47:352
2392199180,16cyclictest3979-21H222:10:212
2392199180,16cyclictest3976-21H222:10:212
2392199180,15cyclictest3985-21H222:10:212
2391699183,1cyclictest0-21swapper/110:25:331
2391699182,15cyclictest4035-21H222:10:211
2391699182,15cyclictest3979-21H222:10:211
2391699182,15cyclictest301702chrt08:16:571
23916991816,1cyclictest7650-21latency11:25:161
23916991816,1cyclictest0-21swapper/112:17:381
23916991816,1cyclictest0-21swapper/108:40:251
23916991815,2cyclictest3979-21H222:10:211
23916991815,2cyclictest31644-21nfsd411:10:191
23916991815,2cyclictest2411-21cat08:25:161
23916991815,1cyclictest0-21swapper/107:55:181
23916991814,3cyclictest3991-21H222:10:211
23916991813,4cyclictest0-21swapper/107:36:021
2391699180,2cyclictest4099-21H222:10:211
2391699180,16cyclictest4099-21H222:10:211
2391699180,16cyclictest3989-21H222:10:211
2391699180,16cyclictest3989-21H222:10:211
2391699180,15cyclictest3985-21H222:10:211
23912991816,1cyclictest0-21swapper/009:53:280
23912991815,2cyclictest17335-21sed08:50:210
2391299181,16cyclictest4100-21H222:10:210
2391299181,16cyclictest27250-21cut09:10:010
2391299180,4cyclictest0-21swapper/012:14:570
2391299180,3cyclictest3985-21H222:10:210
2391299180,2cyclictest3991-21H222:10:210
2391299180,2cyclictest3987-21H222:10:210
2391299180,2cyclictest3979-21H222:10:210
2391299180,2cyclictest3976-21H222:10:210
2391299180,17cyclictest3985-21H222:10:210
2391299180,16cyclictest3983-21H222:10:210
2391299180,15cyclictest3989-21H222:10:210
2391299180,15cyclictest3985-21H222:10:210
23921991716,1cyclictest0-21swapper/209:23:102
23921991715,1cyclictest28-21ksoftirqd/208:25:052
23921991715,1cyclictest0-21swapper/208:15:222
23921991714,2cyclictest29802-21cpuspeed_turbos07:20:152
23921991714,2cyclictest19339-21pzem09:50:222
23921991714,2cyclictest18265-21ls11:45:142
23921991714,2cyclictest16120-21cat07:50:232
23921991713,3cyclictest4099-21H222:10:212
2392199171,15cyclictest0-21swapper/207:20:012
2392199170,2cyclictest6792-21expr11:25:132
2392199170,2cyclictest4099-21H222:10:212
2392199170,2cyclictest4035-21H222:10:212
2392199170,2cyclictest3987-21H222:10:212
2392199170,2cyclictest3976-21H222:10:212
2392199170,2cyclictest24475-21latency_hist10:59:592
2392199170,16cyclictest6386-21sed11:25:002
2392199170,16cyclictest4035-21H222:10:212
2392199170,16cyclictest4035-21H222:10:212
2392199170,16cyclictest3989-21H222:10:212
2392199170,16cyclictest3987-21H222:10:212
2392199170,16cyclictest32032-21grep08:20:182
2392199170,16cyclictest28472-21kernelversion11:05:182
2392199170,16cyclictest26283-21expr12:00:142
2392199170,16cyclictest25994-21/usr/sbin/munin10:05:202
2392199170,16cyclictest23839-21ntpq08:05:182
2392199170,16cyclictest11861-21/usr/sbin/munin09:40:132
2392199170,16cyclictest10997-21cat10:35:162
2392199170,16cyclictest10056-21nfsd407:40:192
2392199170,16cyclictest0-21swapper/210:10:162
2391699172,1cyclictest0-21swapper/108:38:081
23916991715,1cyclictest0-21swapper/112:30:161
23916991715,1cyclictest0-21swapper/111:50:171
23916991714,2cyclictest3985-21H222:10:211
23916991714,2cyclictest3979-21H222:10:211
23916991714,2cyclictest25506-21cron12:00:001
23916991714,1cyclictest0-21swapper/107:10:171
23916991713,3cyclictest3981-21H222:10:211
2391699171,1cyclictest28882-21expr12:05:141
2391699170,2cyclictest3991-21H222:10:211
2391699170,2cyclictest3991-21H222:10:211
2391699170,2cyclictest3989-21H222:10:211
2391699170,2cyclictest3985-21H222:10:211
2391699170,2cyclictest3981-21H222:10:211
2391699170,2cyclictest3979-21H222:10:211
2391699170,2cyclictest3976-21H222:10:211
2391699170,2cyclictest26696-21cron09:09:001
2391699170,2cyclictest21142-21ntpq08:00:201
2391699170,1cyclictest0-21swapper/111:48:171
2391699170,16cyclictest5310-21expr12:20:111
2391699170,16cyclictest4099-21H222:10:211
2391699170,16cyclictest4099-21H222:10:211
2391699170,16cyclictest3991-21H222:10:211
2391699170,16cyclictest3989-21H222:10:211
2391699170,16cyclictest3985-21H222:10:211
2391699170,16cyclictest3985-21H222:10:211
2391699170,16cyclictest3981-21H222:10:211
2391699170,16cyclictest3979-21H222:10:211
2391699170,16cyclictest15070-21/usr/sbin/munin09:45:151
2391699170,16cyclictest1377-21lxd07:16:281
2391699170,16cyclictest0-21swapper/109:10:161
23912991715,1cyclictest0-21swapper/007:45:170
23912991714,2cyclictest7901-21expr08:35:160
23912991714,2cyclictest4099-21H222:10:210
23912991714,2cyclictest4099-21H222:10:210
23912991714,2cyclictest3989-21H222:10:210
23912991714,2cyclictest3985-21H222:10:210
23912991714,2cyclictest26616-21tlsmgr09:34:390
23912991714,2cyclictest14300-21fschecks_time12:35:140
23912991714,2cyclictest1409-21latency09:20:180
23912991714,2cyclictest1-21systemd10:56:520
2391299171,2cyclictest10190-21nfsd409:35:190
2391299170,2cyclictest3983-21H222:10:210
2391299170,2cyclictest28965-21grep11:05:210
2391299170,2cyclictest20783-21anvil08:59:280
2391299170,2cyclictest20609-21/usr/sbin/munin08:00:170
2391299170,2cyclictest17954-21sed07:55:160
2391299170,2cyclictest1516-21lxd09:44:280
2391299170,2cyclictest10745-21expr08:40:130
2391299170,2cyclictest10198-21latency_hist10:34:590
2391299170,1cyclictest0-21swapper/011:51:510
2391299170,1cyclictest0-21swapper/007:20:150
2391299170,16cyclictest3991-21H222:10:210
2391299170,16cyclictest3981-21H222:10:210
2391299170,16cyclictest3981-21H222:10:210
2391299170,16cyclictest28187-21cut07:15:190
2391299170,16cyclictest22823-21fgrep09:00:180
2391299170,16cyclictest2007-21systemd-journal12:04:150
2391299170,16cyclictest17636-21date11:44:590
2391299170,15cyclictest3985-21H222:10:210
23921991614,1cyclictest0-21swapper/210:50:122
23921991613,2cyclictest3987-21H222:10:212
23921991613,2cyclictest3981-21H222:10:212
2392199160,15cyclictest0-21swapper/212:35:112
2392199160,15cyclictest0-21swapper/207:10:142
2391699160,15cyclictest23211-21vmstat09:00:211
2391699160,15cyclictest0-21swapper/109:35:171
23912991614,1cyclictest9394-21apt-get11:30:140
23912991614,1cyclictest0-21swapper/009:15:110
23912991614,1cyclictest0-21swapper/008:25:140
23912991614,1cyclictest0-21swapper/008:15:160
23912991613,2cyclictest3983-21H222:10:210
2391299160,2cyclictest5640-21expr10:25:140
2391299160,1cyclictest0-21swapper/008:30:180
2391299160,15cyclictest1-21systemd10:16:520
2391299160,15cyclictest0-21swapper/010:45:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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