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2026-03-27 - 09:02
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Fri Mar 27, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1025992214,5cyclictest0-21swapper/221:10:172
102599210,4cyclictest13582-21cstates23:40:142
1019992017,2cyclictest1652-21expr19:10:131
1015992017,2cyclictest3053-21systemd-logind20:08:520
1015992012,4cyclictest0-21swapper/022:50:140
102599192,16cyclictest0-21swapper/223:07:002
1025991914,3cyclictest0-21swapper/200:20:272
102599190,16cyclictest4035-21H222:10:212
101999193,1cyclictest17785-21timerandwakeup23:45:211
101999190,16cyclictest32534-21tr20:05:161
1015991917,1cyclictest0-21swapper/022:58:400
1015991917,1cyclictest0-21swapper/020:02:290
1015991916,2cyclictest426-21systemd-udevd23:24:520
1015991913,3cyclictest0-21swapper/020:50:170
1015991913,3cyclictest0-21swapper/020:50:170
101599190,18cyclictest0-21swapper/021:48:490
101599190,0cyclictest0-21swapper/020:27:040
102599182,1cyclictest0-21swapper/223:04:592
102599182,15cyclictest27974-21latency22:00:162
102599182,15cyclictest0-21swapper/220:10:012
102599181,16cyclictest2675-21nfsd419:10:182
102599180,3cyclictest13229-21proc_pri22:40:192
102599180,17cyclictest948-21anvil21:05:322
102599180,17cyclictest31956-21sendmail-mta00:10:452
102599180,17cyclictest29902-21ntp_states20:55:192
102599180,15cyclictest0-21swapper/223:33:592
101999182,15cyclictest22156-21grep21:40:121
101999182,15cyclictest0-21swapper/121:52:341
1019991816,1cyclictest0-21swapper/122:05:001
1019991816,1cyclictest0-21swapper/100:35:091
1019991815,2cyclictest22958-21munin-plugin-st20:45:001
101999181,16cyclictest18554-21grep22:50:161
101999180,17cyclictest3979-21H222:10:211
101999180,17cyclictest3979-21H222:10:211
101999180,17cyclictest19735-21strings21:35:181
101599182,15cyclictest9971-21nfsd420:20:190
1015991816,1cyclictest9-21ksoftirqd/000:10:450
1015991814,3cyclictest5884-21nvmesmart_nvme019:15:250
1015991814,3cyclictest30417-21munin-plugin-st22:10:000
101599181,1cyclictest4035-21H222:10:210
101599181,16cyclictest22152-21http_loadtime19:45:160
101599180,3cyclictest16755-21snapd19:50:180
1025991714,2cyclictest7749-21cut00:25:212
1025991714,2cyclictest3414-21master20:34:432
1025991714,2cyclictest32435-21tr22:20:172
1025991714,2cyclictest31613-21bounce22:17:442
1025991714,2cyclictest19892-21sed23:50:162
1025991714,2cyclictest17572-21expr22:50:122
102599171,15cyclictest236522sleep219:49:052
102599170,2cyclictest5613-21sed22:30:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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