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2026-05-23 - 00:57
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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 Fri May 22, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8818992217,4cyclictest989-21gmain08:30:001
8818992016,3cyclictest0-21swapper/108:40:141
881899200,19cyclictest843-21systemd-network11:50:271
881999190,17cyclictest2007-21systemd-journal11:55:292
881999190,16cyclictest3989-21H222:10:212
881499193,15cyclictest20771-21seq10:19:000
881499192,16cyclictest25588-21nfsd412:20:170
8814991917,1cyclictest7637-21ntp_kernel_pll_10:50:180
8814991914,2cyclictest3981-21H222:10:210
881499191,17cyclictest0-21swapper/010:30:010
881499190,18cyclictest14505-21snapd08:22:580
881499190,18cyclictest0-21swapper/008:25:130
881499190,16cyclictest3979-21H222:10:210
881999182,15cyclictest11064-21grep10:00:172
881999182,15cyclictest0-21swapper/207:18:462
8819991816,1cyclictest0-21swapper/210:20:172
8819991815,2cyclictest4750-21chrt07:57:182
8819991815,2cyclictest3989-21H222:10:212
881999181,2cyclictest28256-21grep09:35:182
881999181,2cyclictest27852-21taskset11:29:582
881999181,16cyclictest17194-21missed_timers09:15:172
881999181,16cyclictest14504-21snapd09:50:522
881999180,17cyclictest909-21sessionclean11:39:002
881999180,17cyclictest843-21systemd-network09:04:262
881999180,17cyclictest25234-21nfsd410:25:162
881999180,17cyclictest0-21swapper/210:47:012
881999180,16cyclictest3979-21H222:10:212
881899182,15cyclictest30401-21grep07:45:191
881899182,15cyclictest21-21ksoftirqd/108:35:581
8818991816,1cyclictest21-21ksoftirqd/108:54:161
8818991816,1cyclictest0-21swapper/109:32:441
8818991815,2cyclictest3987-21H222:10:211
8818991815,2cyclictest31920-21kernelversion11:35:171
8818991815,2cyclictest11152-21ntp_kernel_pll_10:00:171
8818991814,3cyclictest3976-21H222:10:211
881899181,2cyclictest24088-21cpuspeed_turbos10:25:121
881899180,2cyclictest3983-21H222:10:211
881899180,2cyclictest3979-21H222:10:211
881899180,16cyclictest3976-21H222:10:211
881899180,15cyclictest3983-21H222:10:211
8814991816,1cyclictest0-21swapper/009:36:030
8814991816,1cyclictest0-21swapper/007:34:460
8814991815,2cyclictest27918-21seq08:39:530
8814991815,1cyclictest0-21swapper/007:20:130
8814991814,3cyclictest4347-21date11:45:010
8814991814,3cyclictest3983-21H222:10:210
8814991814,2cyclictest3987-21H222:10:210
8814991813,3cyclictest926-21nvmesmart_nvme007:50:190
881499180,2cyclictest3989-21H222:10:210
881499180,17cyclictest3991-21H222:10:210
881499180,17cyclictest3987-21H222:10:210
881499180,17cyclictest3976-21H222:10:210
881499180,17cyclictest1829-21systemd-journal07:28:420
881499180,16cyclictest3981-21H222:10:210
8819991716,0cyclictest0-21swapper/211:06:272
8819991714,2cyclictest9354-21nfsd408:05:212
8819991714,2cyclictest6703-21switchtime08:55:212
8819991714,2cyclictest6466-21ntpq11:45:172
8819991714,2cyclictest3987-21H222:10:212
8819991714,2cyclictest3983-21H222:10:212
8819991714,2cyclictest3979-21H222:10:212
8819991714,2cyclictest24221-21ntpq11:20:182
8819991714,2cyclictest17582-21cpuspeed_turbos11:10:132
8819991714,2cyclictest13394-21expr10:05:132
8819991714,2cyclictest13364-21/usr/sbin/munin09:10:112
8819991714,2cyclictest10047-21expr07:10:142
881999171,15cyclictest26975-21gpgconf10:30:012
881999171,15cyclictest0-21swapper/208:40:452
881999170,2cyclictest3991-21H222:10:212
881999170,2cyclictest3987-21H222:10:212
881999170,2cyclictest3983-21H222:10:212
881999170,2cyclictest3979-21H222:10:212
881999170,2cyclictest20393-21/usr/sbin/munin09:20:182
881999170,2cyclictest1515-21lxd07:54:452
881999170,2cyclictest14702-21nvmesmart_nvme012:00:202
881999170,1cyclictest0-21swapper/208:10:182
881999170,16cyclictest6252-21apt-get09:55:012
881999170,16cyclictest3274-21nfsd408:50:182
881999170,16cyclictest31598-21ntp_kernel_pll_12:30:172
881999170,16cyclictest3058-21rs:main2
881999170,16cyclictest30563-21fschecks_count09:40:142
881999170,16cyclictest27273-21expr12:25:132
881999170,16cyclictest24769-21/usr/sbin/munin07:35:192
881999170,16cyclictest2019-21expr11:40:152
881999170,16cyclictest18142-21perf10:15:002
881999170,16cyclictest0-21swapper/211:50:342
881999170,15cyclictest3991-21H222:10:212
8818991714,2cyclictest3987-21H222:10:211
8818991714,2cyclictest3987-21H222:10:211
8818991714,2cyclictest3985-21H222:10:211
8818991714,2cyclictest3983-21H222:10:211
8818991714,2cyclictest31107-21grep10:35:171
8818991714,2cyclictest27000-21expr07:40:131
8818991714,2cyclictest19339-21ls12:10:131
8818991714,2cyclictest18765-21ntpq11:10:181
8818991714,2cyclictest14499-21snapd09:55:121
8818991714,1cyclictest0-21swapper/110:30:171
8818991712,4cyclictest870-21systemd-logind09:28:511
881899171,15cyclictest16460-21expr12:05:131
881899170,2cyclictest6125-21munin-run09:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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