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2026-05-19 - 01:50
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Mon May 18, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23762992313,10cyclictest0-21swapper/109:35:011
2376199220,18cyclictest0-21swapper/011:38:260
2376299212,16cyclictest3976-21H222:10:211
2376299209,0cyclictest0-21swapper/109:01:351
2376299202,17cyclictest0-21swapper/109:11:381
2376199203,11cyclictest30367-21munin-run09:15:010
2376699192,16cyclictest22691-21nfsd411:50:172
2376699192,16cyclictest0-21swapper/208:05:202
23766991917,1cyclictest28-21ksoftirqd/211:02:272
23766991917,1cyclictest0-21swapper/211:28:192
2376699190,18cyclictest12917-21perf09:40:012
2376699190,16cyclictest3983-21H222:10:212
23762991918,0cyclictest0-21swapper/112:30:151
23762991917,1cyclictest0-21swapper/108:54:561
23762991916,2cyclictest3979-21H222:10:211
23762991916,2cyclictest21-21ksoftirqd/110:24:291
2376299190,18cyclictest843-21systemd-network10:56:491
2376299190,16cyclictest3987-21H222:10:211
2376299190,16cyclictest3979-21H222:10:211
23761991915,2cyclictest3976-21H222:10:210
2376199190,2cyclictest3991-21H222:10:210
2376199190,1cyclictest0-21swapper/009:40:130
2376199190,18cyclictest0-21swapper/010:15:010
2376699182,15cyclictest0-21swapper/212:06:082
2376699182,15cyclictest0-21swapper/208:48:002
23766991816,1cyclictest0-21swapper/212:37:472
23766991814,3cyclictest0-21swapper/211:47:412
23766991814,3cyclictest0-21swapper/211:47:412
2376699181,2cyclictest31938-21chrt10:11:502
2376699181,2cyclictest22239-21http_loadtime09:55:142
2376699181,16cyclictest3987-21H222:10:212
2376699181,16cyclictest3979-21H222:10:212
2376699181,16cyclictest2905-21awk09:20:162
2376699180,2cyclictest4099-21H222:10:212
2376699180,2cyclictest3983-21H222:10:212
2376699180,2cyclictest3983-21H222:10:212
2376699180,2cyclictest3976-21H222:10:212
2376699180,1cyclictest3979-21H222:10:212
2376699180,1cyclictest0-21swapper/208:40:042
2376699180,17cyclictest4099-21H222:10:212
2376699180,17cyclictest4035-21H222:10:212
2376699180,15cyclictest3976-21H222:10:212
2376299182,15cyclictest21-21ksoftirqd/112:27:471
23762991816,1cyclictest0-21swapper/109:35:051
2376299181,16cyclictest14545-21snapd07:25:281
2376299181,16cyclictest0-21swapper/110:25:021
2376299180,2cyclictest3976-21H222:10:211
2376199182,2cyclictest2885-21iscsid09:48:140
23761991817,1cyclictest9-21ksoftirqd/009:57:250
23761991815,2cyclictest3991-21H222:10:210
23761991813,2cyclictest3991-21H222:10:210
2376199180,2cyclictest3981-21H222:10:210
2376199180,17cyclictest3989-21H222:10:210
2376199180,17cyclictest3989-21H222:10:210
2376199180,16cyclictest3991-21H222:10:210
2376199180,16cyclictest3987-21H222:10:210
23766991715,1cyclictest0-21swapper/211:20:202
23766991714,2cyclictest3882-21timerandwakeup08:25:212
23766991714,2cyclictest26992-21find09:09:012
23766991714,2cyclictest25647-21basename07:10:222
23766991714,2cyclictest25269-21sort11:55:172
23766991714,1cyclictest0-21swapper/208:55:222
23766991713,2cyclictest3985-21H222:10:212
23766991712,1cyclictest0-21swapper/210:35:212
2376699171,15cyclictest0-21swapper/212:30:172
2376699170,2cyclictest9869-21nfsd407:40:192
2376699170,2cyclictest3991-21H222:10:212
2376699170,2cyclictest3989-21H222:10:212
2376699170,2cyclictest3987-21H222:10:212
2376699170,2cyclictest28427-21cat09:10:152
2376699170,2cyclictest27132-21pzem_current08:10:222
2376699170,2cyclictest22841-21kernelversion09:00:172
2376699170,2cyclictest18999-21ntp_offset10:45:192
2376699170,16cyclictest863-21avahi-daemon11:30:212
2376699170,16cyclictest841-21latency07:25:172
2376699170,16cyclictest7142-21ntp_offset07:35:192
2376699170,16cyclictest5575-21fschecks_time08:30:152
2376699170,16cyclictest455-21plymouthd07:55:132
2376699170,16cyclictest3981-21H222:10:212
2376699170,16cyclictest31452-21cpu11:10:132
2376699170,16cyclictest31105-21fgrep07:20:202
2376699170,16cyclictest26382-21anvil12:01:492
2376699170,16cyclictest20175-21ntp_kernel_pll_09:50:172
2376699170,16cyclictest16300-21expr09:45:142
2376699170,16cyclictest15964-21cat07:50:222
23762991715,1cyclictest188752chrt07:56:221
23762991715,1cyclictest0-21swapper/111:54:051
23762991714,2cyclictest8228-21fschecks_count08:35:161
23762991714,2cyclictest30825-21latency10:10:171
23762991714,2cyclictest2699-21/usr/sbin/munin07:30:121
23762991714,2cyclictest21278-21awk08:00:181
23762991714,2cyclictest19074-21expr11:45:131
23762991714,2cyclictest19074-21expr11:45:131
23762991714,2cyclictest13796-21fschecks_time11:35:151
23762991714,2cyclictest1100-21snmpd07:50:191
23762991714,2cyclictest0-21swapper/110:30:511
2376299171,15cyclictest3979-21H222:10:211
2376299171,15cyclictest26828-21nfsd408:10:201
23762991710,3cyclictest0-21swapper/108:24:291
2376299170,2cyclictest5460-21df08:30:151
2376299170,2cyclictest455-21plymouthd09:08:591
2376299170,2cyclictest3991-21H222:10:211
2376299170,2cyclictest3987-21H222:10:211
2376299170,2cyclictest3981-21H222:10:211
2376299170,2cyclictest3976-21H222:10:211
2376299170,2cyclictest3811-21chrt08:25:211
2376299170,2cyclictest300-21grep10:15:131
2376299170,2cyclictest28138-21needreboot12:00:171
2376299170,2cyclictest14495-21snapd07:17:571
2376299170,2cyclictest13399-21cpuspeed_turbos08:45:131
2376299170,1cyclictest3985-21H222:10:211
2376299170,1cyclictest3983-21H222:10:211
2376299170,16cyclictest3983-21H222:10:211
2376299170,16cyclictest31999-21cat11:10:131
2376299170,16cyclictest31017-21gpg-connect-age09:15:011
2376299170,16cyclictest29983-21expr12:05:151
2376299170,16cyclictest29949-21ntp_states11:05:201
2376299170,16cyclictest25955-21expr11:00:131
2376299170,16cyclictest23742-21cat08:05:171
2376299170,16cyclictest2270-21expr11:15:131
2376299170,16cyclictest20529-21smartctl08:55:201
2376299170,16cyclictest0-21swapper/112:10:121
2376299170,16cyclictest0-21swapper/107:10:121
23761991715,1cyclictest9-21ksoftirqd/010:51:290
23761991715,1cyclictest3991-21H222:10:210
23761991714,2cyclictest6599-21switchtime11:20:200
23761991714,2cyclictest4035-21H222:10:210
23761991714,2cyclictest3991-21H222:10:210
23761991714,2cyclictest3989-21H222:10:210
23761991714,2cyclictest3979-21H222:10:210
23761991714,2cyclictest3976-21H222:10:210
23761991714,2cyclictest26813-21egrep07:15:140
23761991714,2cyclictest24572-21expr07:10:150
23761991714,2cyclictest2033-21taskset07:26:490
23761991714,2cyclictest14884-21apache_accesses10:40:110
23761991714,2cyclictest13018-21latency_hist08:45:010
23761991714,2cyclictest11656-21grep11:30:180
23761991714,2cyclictest0-21swapper/008:50:010
2376199171,15cyclictest3985-21H222:10:210
2376199171,15cyclictest0-21swapper/008:15:210
2376199170,3cyclictest0-21swapper/008:02:570
2376199170,2cyclictest7358-21munin-run08:35:000
2376199170,2cyclictest3989-21H222:10:210
2376199170,2cyclictest3987-21H222:10:210
2376199170,2cyclictest27754-21if_eno112:00:150
2376199170,2cyclictest1351-21lxd11:52:420
2376199170,2cyclictest12293-21timerwakeupswit09:35:220
2376199170,1cyclictest3991-21H222:10:210
2376199170,16cyclictest4680-21nfsd410:20:180
2376199170,16cyclictest455-21plymouthd08:50:100
2376199170,16cyclictest3991-21H222:10:210
2376199170,16cyclictest3983-21H222:10:210
2376199170,16cyclictest3981-21H222:10:210
2376199170,16cyclictest30854-21grep07:20:170
2376199170,16cyclictest3053-21systemd-logind07:54:520
2376199170,16cyclictest2506-21cat09:20:150
2376199170,16cyclictest23193-21grep10:55:170
2376199170,16cyclictest1722-21nvmesmart_nvme010:15:190
2376199170,16cyclictest1522-21lxd09:00:410
2376199170,16cyclictest14550-21snapd12:15:340
2376199170,15cyclictest0-21swapper/012:32:220
23766991614,1cyclictest7139-21sed12:20:192
23766991614,1cyclictest0-21swapper/211:05:142
23766991614,1cyclictest0-21swapper/208:00:022
23766991613,2cyclictest16296-21apt-config08:50:022
2376699160,2cyclictest7756-21expr08:35:152
2376699160,2cyclictest2736-21grep07:30:132
2376699160,1cyclictest0-21swapper/212:25:192
2376699160,15cyclictest3989-21H222:10:212
2376699160,15cyclictest26894-21cpuspeed_turbos07:15:142
2376699160,15cyclictest0-21swapper/209:30:012
2376699160,15cyclictest0-21swapper/208:20:112
2376699160,15cyclictest0-21swapper/208:15:132
23762991614,1cyclictest0-21swapper/110:00:171
23762991614,1cyclictest0-21swapper/109:45:221
23762991613,2cyclictest6342-21df07:35:151
23762991613,2cyclictest11558-21needreboot11:30:171
2376299160,1cyclictest0-21swapper/107:20:131
2376299160,15cyclictest3991-21H222:10:211
2376299160,15cyclictest28431-21cpuspeed_turbos08:15:131
2376299160,15cyclictest0-21swapper/111:20:141
2376299160,15cyclictest0-21swapper/108:40:111
2376299160,15cyclictest0-21swapper/107:45:141
2376299160,15cyclictest0-21swapper/107:40:161
23761991614,1cyclictest7607-21/usr/sbin/munin08:35:140
23761991614,1cyclictest0-21swapper/011:15:130
23761991614,1cyclictest0-21swapper/008:10:120
23761991614,1cyclictest0-21swapper/007:40:140
23761991613,2cyclictest1836-21/usr/sbin/munin08:25:110
2376199160,1cyclictest10128-21latency_hist11:30:010
2376199160,15cyclictest4035-21H222:10:210
2376199160,15cyclictest28559-21apt-get11:05:130
2376199160,15cyclictest2855-21cpuspeed_turbos07:30:140
2376199160,15cyclictest23903-21needreboot08:05:170
2376199160,15cyclictest16852-21apache_volume07:55:110
2376199160,15cyclictest0-21swapper/008:55:210
2376199160,15cyclictest0-21swapper/007:45:110
2376299150,1cyclictest0-21swapper/111:25:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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