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2026-03-16 - 10:41
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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 Mon Mar 16, 2026 00:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
616499230,22cyclictest0-21swapper/023:51:460
616699212,3cyclictest0-21swapper/200:35:002
616599206,13cyclictest0-21swapper/120:16:591
6164992016,3cyclictest3732-21sed22:55:000
616699190,17cyclictest0-21swapper/221:29:342
6165991917,1cyclictest21-21ksoftirqd/123:07:111
616599190,4cyclictest32737-21taskset20:54:041
616599190,18cyclictest0-21swapper/100:18:071
616599190,0cyclictest0-21swapper/120:55:101
6164991914,3cyclictest0-21swapper/020:26:210
616699182,1cyclictest98822sleep222:06:052
616699182,15cyclictest3979-21H222:10:212
616699182,15cyclictest0-21swapper/222:02:172
616699181,16cyclictest29505-21taskset22:43:212
616699181,16cyclictest13974-21/usr/sbin/munin00:10:182
616699180,3cyclictest0-21swapper/221:56:012
616699180,17cyclictest30216-21uname23:40:152
616699180,15cyclictest0-21swapper/221:15:192
616599182,1cyclictest0-21swapper/122:55:391
6165991818,0cyclictest0-21swapper/121:20:161
6165991817,0cyclictest0-21swapper/119:50:221
6165991816,1cyclictest21-21ksoftirqd/120:44:021
6165991816,1cyclictest0-21swapper/121:40:141
6165991816,1cyclictest0-21swapper/121:05:131
6165991814,3cyclictest0-21swapper/121:53:031
616599181,2cyclictest0-21swapper/100:35:141
616599180,3cyclictest19560-21nfsd423:20:181
616599180,16cyclictest0-21swapper/122:04:241
616599180,15cyclictest3976-21H222:10:211
6164991816,1cyclictest0-21swapper/022:00:100
6164991815,2cyclictest7964-21nfsd421:05:160
6164991815,2cyclictest22906-21nfsd422:30:170
6164991813,3cyclictest0-21swapper/021:12:020
616499180,3cyclictest8240-21/usr/sbin/munin00:00:130
616499180,2cyclictest3981-21H222:10:210
616499180,17cyclictest15945-21lxd20:30:490
616499180,15cyclictest0-21swapper/020:13:070
6166991715,1cyclictest22662-21kernelversion20:35:172
6166991714,2cyclictest7696-21/usr/sbin/munin21:05:162
6166991714,2cyclictest3312-21taskset22:54:512
6166991714,2cyclictest28988-21grep21:45:132
6166991714,2cyclictest28831-21latency_hist21:45:012
6166991714,2cyclictest28397-21chrt19:48:062
6166991714,2cyclictest21750-21missed_timers19:35:172
6166991714,2cyclictest1628-21fschecks_time20:55:132
6166991714,2cyclictest12190-21nvmesmart_nvme022:10:192
6166991714,2cyclictest1164-21processes23:45:202
616699170,2cyclictest8747-21switchtime23:00:212
616699170,2cyclictest6783-21nfsd423:55:182
616699170,2cyclictest645-21ntp_kernel_pll_19:55:182
616699170,2cyclictest6185-21timerandwakeup22:55:222
616699170,2cyclictest4327-21expr21:00:122
616699170,2cyclictest4327-21expr21:00:112
616699170,2cyclictest31851-21ntp_offset22:45:172
616699170,2cyclictest23427-21threads22:30:222
616699170,2cyclictest15945-21lxd00:04:352
616699170,16cyclictest863-21avahi-daemon20:45:202
616699170,16cyclictest26511-21tr23:35:152
616699170,16cyclictest25927-21processes22:35:182
616699170,16cyclictest23482-21munin-run23:29:592
616699170,16cyclictest21794-21perf00:25:002
616699170,16cyclictest19581-21fschecks_count22:25:142
616699170,16cyclictest16676-21systemctl21:20:202
616699170,16cyclictest16229-21postgres22:20:072
616699170,16cyclictest16229-21postgres22:20:062
616699170,16cyclictest15900-21idleruntime19:25:162
616699170,16cyclictest10894-21nfsd419:15:182
616699170,16cyclictest10894-21nfsd419:15:172
616699170,16cyclictest0-21swapper/220:40:022
6165991715,1cyclictest257242sleep119:43:481
6165991715,1cyclictest201rcuc/119:55:141
6165991715,1cyclictest16350-21cpuspeed_turbos22:20:141
6165991715,1cyclictest16350-21cpuspeed_turbos22:20:141
6165991715,1cyclictest0-21swapper/119:10:141
6165991714,2cyclictest859-21nfsd423:45:171
6165991714,2cyclictest4264-21processes23:50:191
6165991714,2cyclictest3058-21rs:main1
6165991714,2cyclictest22755-21anvil21:33:401
6165991714,2cyclictest21733-21/usr/sbin/munin20:35:111
6165991714,1cyclictest0-21swapper/121:15:211
616599171,1cyclictest30309-21cut20:50:021
616599171,15cyclictest13436-21fw_packets23:10:151
616599170,2cyclictest31937-21latency_hist23:45:011
616599170,2cyclictest2007-21systemd-journal23:17:031
616599170,2cyclictest18921-21/usr/sbin/munin19:30:171
616599170,2cyclictest1856-21systemd-udevd22:38:521
616599170,2cyclictest1526-21lxd19:38:491
616599170,1cyclictest0-21swapper/119:17:481
616599170,1cyclictest0-21swapper/119:17:481
616599170,16cyclictest7494-21taskset23:55:521
616599170,16cyclictest3053-21systemd-logind21:26:521
616599170,16cyclictest2594-21switchtime22:50:221
616599170,16cyclictest21514-21df23:25:141
616599170,16cyclictest2069-21systemd-udevd20:10:521
616599170,16cyclictest19699-21sed22:25:141
616599170,16cyclictest18830-21latency_hist20:30:011
616599170,16cyclictest1829-21systemd-journal23:33:421
616599170,16cyclictest15575-21grep00:10:191
616599170,16cyclictest1521-21lxd00:20:341
616599170,16cyclictest14466-21awk20:20:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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