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2026-04-04 - 05:52
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Sat Apr 04, 2026 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1952899350,24cyclictest0-21swapper/120:33:261
1952399220,3cyclictest0-21swapper/000:34:340
1952899215,9cyclictest0-21swapper/122:49:471
1952899214,16cyclictest6213-21idleruntime23:30:151
19528992118,2cyclictest880-21rs:main1
19531992017,2cyclictest18746-21cpuspeed_turbos20:05:152
19531992014,5cyclictest0-21swapper/220:04:382
19523992017,2cyclictest4099-21H222:10:210
1952399200,19cyclictest426-21systemd-udevd19:24:520
1952399200,19cyclictest426-21systemd-udevd19:12:520
1953199192,2cyclictest3985-21H222:10:212
19531991916,2cyclictest12644-21latency_hist19:55:012
1953199190,2cyclictest4099-21H222:10:212
1953199190,18cyclictest399-20systemd-journal20:32:342
1953199190,16cyclictest3989-21H222:10:212
1952899193,15cyclictest0-21swapper/122:24:451
1952899193,15cyclictest0-21swapper/122:24:451
1952899192,2cyclictest18420-21cut20:05:001
19528991916,2cyclictest3976-21H222:10:211
1952899190,2cyclictest3989-21H222:10:211
1952899190,18cyclictest0-21swapper/119:49:161
19523991917,1cyclictest9-21ksoftirqd/000:07:460
19523991915,1cyclictest0-21swapper/021:47:360
19523991915,1cyclictest0-21swapper/021:43:590
1952399190,16cyclictest3987-21H222:10:210
19531991816,1cyclictest0-21swapper/222:30:212
19531991815,2cyclictest3981-21H222:10:212
1953199181,2cyclictest20534-21strings22:00:182
1953199180,3cyclictest3550-21sshd22:26:312
1953199180,3cyclictest32369-21ls23:20:132
1953199180,3cyclictest1523-21lxd22:22:492
1953199180,3cyclictest1523-21lxd22:22:492
1953199180,2cyclictest4099-21H222:10:212
1953199180,17cyclictest3991-21H222:10:212
1953199180,17cyclictest3985-21H222:10:212
1953199180,17cyclictest3981-21H222:10:212
1953199180,17cyclictest0-21swapper/220:44:432
1953199180,16cyclictest4099-21H222:10:212
1953199180,16cyclictest3983-21H222:10:212
1953199180,16cyclictest3983-21H222:10:212
1953199180,16cyclictest3981-21H222:10:212
1952899182,2cyclictest24842-21nfsd423:05:191
1952899182,1cyclictest0-21swapper/120:50:131
1952899182,15cyclictest793-21nfsd423:20:171
1952899182,15cyclictest21-21ksoftirqd/100:08:441
19528991815,2cyclictest28618-21date21:20:001
19528991814,3cyclictest3985-21H222:10:211
1952899181,2cyclictest29183-21http_loadtime19:25:141
1952899180,2cyclictest4099-21H222:10:211
1952899180,2cyclictest3981-21H222:10:211
1952899180,16cyclictest3991-21H222:10:211
1952399182,1cyclictest0-21swapper/019:26:400
19523991816,1cyclictest9-21ksoftirqd/023:45:310
19523991816,1cyclictest3987-21H222:10:210
1952399181,2cyclictest30093-21chrt22:15:510
19523991812,5cyclictest12616-21awk19:55:010
1952399181,16cyclictest3985-21H222:10:210
1952399180,2cyclictest3987-21H222:10:210
1952399180,2cyclictest3987-21H222:10:210
1952399180,17cyclictest870-21systemd-logind20:56:520
1952399180,17cyclictest3989-21H222:10:210
1952399180,15cyclictest3983-21H222:10:210
1952399180,15cyclictest3981-21H222:10:210
1953199172,1cyclictest31950irq/134-nvme0q322:20:002
19531991715,1cyclictest0-21swapper/223:30:162
19531991715,1cyclictest0-21swapper/200:35:142
19531991714,2cyclictest4099-21H222:10:212
19531991714,2cyclictest3985-21H222:10:212
19531991714,2cyclictest28073-21apt-get21:20:012
19531991714,2cyclictest26694-21cut22:10:182
19531991714,2cyclictest23806-21awk19:15:172
19531991714,2cyclictest22650-21cpuspeed_turbos00:00:132
19531991714,2cyclictest18793-21ntp_states21:00:182
19531991714,2cyclictest13418-21pzem20:50:202
19531991714,2cyclictest13357-21fschecks_time22:45:142
19531991714,2cyclictest12585-21cron19:55:012
19531991714,2cyclictest0-21swapper/223:35:132
1953199170,2cyclictest8626-21tr22:35:202
1953199170,2cyclictest32415-21grep19:30:162
1953199170,2cyclictest28748-21sed20:20:222
1953199170,2cyclictest2346-21expr21:30:142
1953199170,2cyclictest23268-21cut21:10:132
1953199170,2cyclictest22579-21cat22:05:142
1953199170,2cyclictest19537-21latency_hist23:55:012
1953199170,2cyclictest15671-21missed_timers20:55:162
1953199170,2cyclictest1330-21apache_accesses00:20:122
1953199170,1cyclictest0-21swapper/223:55:172
1953199170,17cyclictest0-21swapper/223:15:422
1953199170,16cyclictest8516-21cpuspeed_turbos21:40:142
1953199170,16cyclictest5239-21dpkg21:35:012
1953199170,16cyclictest4939-21cpuspeed_turbos19:40:132
1953199170,16cyclictest3991-21H222:10:212
1953199170,16cyclictest3991-21H222:10:212
1953199170,16cyclictest14267-21ls21:50:132
1953199170,16cyclictest12355-21nfsd421:45:182
1953199170,16cyclictest10761-21cat22:40:162
1953199170,16cyclictest0-21swapper/219:35:132
19528991714,2cyclictest8647-21pzem_energy00:30:191
19528991714,2cyclictest8403-21/usr/sbin/munin21:40:181
19528991714,2cyclictest4220-21cron19:39:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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