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2026-05-24 - 02:01
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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 Sat May 23, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
707399236,13cyclictest0-21swapper/111:23:211
707499220,17cyclictest0-21swapper/210:43:512
707399220,21cyclictest21-21ksoftirqd/109:50:181
707299210,18cyclictest0-21swapper/009:43:350
707499202,17cyclictest3986-21H222:10:212
7072992018,1cyclictest0-21swapper/012:36:190
7072992012,6cyclictest0-21swapper/008:04:040
7074991916,2cyclictest3188-21cut08:55:192
7074991915,3cyclictest0-21swapper/210:22:532
7074991914,3cyclictest0-21swapper/208:47:472
707399193,1cyclictest0-21swapper/109:22:541
7073991917,1cyclictest3976-21H222:10:211
707399190,18cyclictest3981-21H222:10:211
707399190,17cyclictest12879-21cpuspeed_turbos12:05:141
707299193,1cyclictest23403-21fw_packets11:25:140
7072991915,3cyclictest0-21swapper/008:33:590
707299190,18cyclictest0-21swapper/007:36:010
707499182,15cyclictest2707-21nfsd411:45:182
707499182,15cyclictest0-21swapper/211:52:582
7074991814,3cyclictest3987-21H222:10:212
7074991814,3cyclictest0-21swapper/211:37:582
7074991813,1cyclictest0-21swapper/209:18:382
707499180,2cyclictest3976-21H222:10:212
707499180,17cyclictest3987-21H222:10:212
707499180,17cyclictest2872-21systemd-logind08:32:512
707499180,17cyclictest0-21swapper/207:20:142
707399182,1cyclictest15167-21fschecks_time11:10:151
707399182,15cyclictest408-21grep10:45:151
7073991816,1cyclictest0-21swapper/110:10:141
7073991816,1cyclictest0-21swapper/110:10:141
7073991816,1cyclictest0-21swapper/109:16:431
7073991816,1cyclictest0-21swapper/108:44:531
7073991814,3cyclictest3989-21H222:10:211
7073991814,3cyclictest19768-21cron08:30:011
707399181,1cyclictest3976-21H222:10:211
707399180,3cyclictest14499-21snapd12:25:371
707399180,17cyclictest870-21systemd-logind09:13:511
707399180,16cyclictest5511-21python310:55:001
707299182,15cyclictest4785-21timerwakeupswit10:50:210
7072991816,1cyclictest9-21ksoftirqd/007:46:080
7072991816,1cyclictest18863-21ntp_offset08:25:190
7072991816,1cyclictest0-21swapper/010:35:240
7072991816,1cyclictest0-21swapper/010:10:160
7072991816,1cyclictest0-21swapper/010:10:150
7072991815,2cyclictest1482-21date08:55:010
7072991815,2cyclictest10844-21if_enp1s012:00:150
707299181,2cyclictest17983-21idleruntime-cro12:15:000
707299181,16cyclictest29320-21cut11:35:180
707299180,2cyclictest3981-21H222:10:210
707299180,17cyclictest19303-21nvmesmart_nvme010:20:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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