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2025-07-07 - 01:50
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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 Sun Jul 06, 2025 12:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21739992213,0cyclictest0-21swapper/010:40:170
2173999220,21cyclictest893-21systemd-logind12:27:070
2174899210,20cyclictest0-21swapper/211:25:232
2174899210,20cyclictest0-21swapper/211:25:222
2173999212,13cyclictest0-21swapper/010:04:200
2173999210,20cyclictest893-21systemd-logind10:57:080
2173999210,20cyclictest823-21systemd-network08:30:000
2174899202,17cyclictest0-21swapper/211:52:172
21748992018,1cyclictest0-21swapper/210:16:222
21748992018,1cyclictest0-21swapper/210:13:502
2174399204,12cyclictest0-21swapper/110:29:211
21748991917,1cyclictest0-21swapper/209:50:362
2174899190,4cyclictest414-20systemd-journal09:00:212
2174399194,1cyclictest0-21swapper/110:12:201
2174399192,16cyclictest5983-21processes07:35:211
21743991917,1cyclictest0-21swapper/109:09:371
2174399191,2cyclictest28302-21grep08:15:211
2173999190,18cyclictest0-21swapper/007:21:440
2174899181,2cyclictest15722-21runrttasks10:45:142
2174899180,17cyclictest0-21swapper/210:00:132
2174899180,15cyclictest4523-21H212:26:332
2174399182,15cyclictest0-21swapper/110:15:181
2174399181,16cyclictest30967-21missed_timers11:10:191
2174399181,16cyclictest10092-21nfsd411:30:171
2174399180,1cyclictest0-21swapper/109:27:281
2173999182,15cyclictest0-21swapper/011:45:230
2173999182,15cyclictest0-21swapper/009:45:160
2173999182,15cyclictest0-21swapper/007:50:000
21739991816,1cyclictest0-21swapper/012:20:260
21739991816,1cyclictest0-21swapper/012:10:240
21739991813,1cyclictest0-21swapper/011:50:200
2173999180,3cyclictest0-21swapper/009:40:020
2173999180,17cyclictest4528-21H212:26:330
2173999180,17cyclictest2049-21systemd-journal11:39:010
2173999180,16cyclictest11302-21ubuntu-distro-i09:40:000
2174899172,14cyclictest0-21swapper/211:22:542
21748991714,2cyclictest9385-21lockfile-create08:40:022
21748991714,2cyclictest6145-21missed_timers12:20:192
21748991714,2cyclictest454-21plymouthd07:15:012
21748991714,2cyclictest29512-21idleruntime-cro11:10:012
21748991714,2cyclictest22921-21cpuspeed_turbos11:55:142
21748991714,2cyclictest19606-21needreboot08:55:202
21748991714,2cyclictest18726-21/usr/sbin/munin08:00:152
21748991714,2cyclictest16311-21fschecks_count08:50:182
21748991714,2cyclictest14204-21nfsd410:40:182
21748991714,2cyclictest13187-21cat07:50:002
21748991714,2cyclictest1296-21grep09:20:222
2174899171,2cyclictest14889-21expr11:40:162
2174899171,1cyclictest19639-21nfsd410:50:202
2174899171,16cyclictest0-21swapper/212:30:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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