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2026-04-26 - 00:41
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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 Sat Apr 25, 2026 12:46:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28221992621,4cyclictest29504-21mii-tool09:05:172
2822199242,21cyclictest0-21swapper/207:22:562
28221992417,6cyclictest1882-21cron11:09:012
2822199240,21cyclictest0-21swapper/209:15:172
28212992417,6cyclictest9916-21expr10:25:140
2821299240,22cyclictest6057-21run-parts08:25:000
2822199230,5cyclictest0-21swapper/210:58:082
28212992317,5cyclictest28179-21grep10:00:150
2821299230,22cyclictest843-21systemd-network09:55:400
2821299230,22cyclictest18709-21date07:50:010
2821299230,18cyclictest0-21swapper/012:05:000
2822199222,1cyclictest8938-21idleruntime11:20:172
2822199220,3cyclictest2007-21systemd-journal08:49:152
2822199220,2cyclictest32272-21hddtemp_smartct09:10:152
2822199220,2cyclictest27551-21grep09:00:212
2822199220,2cyclictest22421-21fgrep10:45:202
2822199220,2cyclictest11013-21grep09:30:142
2822199220,1cyclictest7437-21cat10:20:152
28212992214,7cyclictest9746-21expr08:30:130
28212992213,8cyclictest843-21systemd-network11:36:080
2821299220,2cyclictest31794-21cut09:10:130
2821299220,2cyclictest22544-21chrt08:52:120
2821299220,2cyclictest20210-21expr11:40:130
2821299220,2cyclictest11994-21ntp_states07:35:210
2821299220,21cyclictest16322-21grep08:40:180
2821299220,20cyclictest6232-21perf10:20:010
2821299220,20cyclictest20272-21sed12:39:000
2821299220,17cyclictest0-21swapper/010:58:300
2821299220,16cyclictest30059-21dpkg08:10:130
2821299220,16cyclictest14883-21grep09:35:180
2821299220,16cyclictest1035-21thermald07:10:350
2821299220,15cyclictest0-21swapper/007:45:010
28221992115,5cyclictest182382chrt07:46:072
28221992114,6cyclictest18209-21expr12:35:152
28221992113,7cyclictest29580-21expr11:00:142
28221992113,7cyclictest24560-21cut08:00:152
28221992113,7cyclictest24560-21cut08:00:152
2822199211,2cyclictest10771-21cat12:20:162
2822199211,19cyclictest16403-21latency_hist09:40:002
2822199211,19cyclictest10058-21expr10:25:142
2822199211,15cyclictest24263-21chrt09:54:212
2822199210,2cyclictest29963-21latency_hist08:10:012
2822199210,2cyclictest28950-21smartctl10:00:192
2822199210,2cyclictest25660-21expr11:50:152
2822199210,2cyclictest22388-21date11:45:012
2822199210,2cyclictest20691-21cut08:50:142
2822199210,2cyclictest18122-21chrt10:40:022
2822199210,2cyclictest17373-21anvil10:37:412
2822199210,2cyclictest16952-21grep11:35:142
2822199210,2cyclictest16836-21ls09:40:142
2822199210,2cyclictest15201-21apache_volume12:30:102
2822199210,2cyclictest12846-21expr12:25:142
2822199210,2cyclictest12846-21expr12:25:142
2822199210,2cyclictest11492-21chrt08:32:442
2822199210,2cyclictest1143-21expr12:05:132
2822199210,20cyclictest7392-21idleruntime08:25:162
2822199210,20cyclictest32133-21timerwakeupswit10:05:212
2822199210,1cyclictest6537-21ntpq07:25:202
2822199210,1cyclictest26106-21ntpq09:55:202
2822199210,1cyclictest15376-21awk11:30:172
2822199210,1cyclictest15362-21expr08:40:142
2822199210,1cyclictest0-21swapper/210:50:202
2822199210,1cyclictest0-21swapper/208:15:222
2822199210,1cyclictest0-21swapper/207:55:182
2822199210,1cyclictest0-21swapper/207:42:102
2822199210,1cyclictest0-21swapper/207:38:592
2822199210,1cyclictest0-21swapper/207:30:172
2822199210,1cyclictest0-21swapper/207:16:072
2822199210,1cyclictest0-21swapper/207:10:312
2822199210,16cyclictest12890-21if_eno108:35:162
28212992114,6cyclictest7163-21expr08:25:150
28212992114,6cyclictest0-21swapper/012:10:130
28212992114,6cyclictest0-21swapper/010:35:140
28212992114,6cyclictest0-21swapper/009:25:200
2821299210,2cyclictest26584-21cut09:00:150
2821299210,2cyclictest14482-21expr11:30:130
2821299210,20cyclictest22078-21cat07:55:150
2821299210,20cyclictest10174-21latency_hist07:35:010
2821299210,20cyclictest0-21swapper/012:05:130
2821299210,1cyclictest0-21swapper/009:20:170
2821299210,1cyclictest0-21swapper/009:20:170
2821299210,1cyclictest0-21swapper/007:53:370
2821299210,19cyclictest0-21swapper/012:15:130
2821299210,15cyclictest25396-21/usr/sbin/munin11:50:150
2821299210,15cyclictest21726-21cut09:50:010
2821299210,15cyclictest12764-21expr12:25:140
2821299210,15cyclictest12764-21expr12:25:140
2821299210,15cyclictest10038-21cstates12:20:130
28221992014,5cyclictest9190-21ntpq09:25:182
28221992014,5cyclictest20051-21missed_timers07:50:182
28221992011,5cyclictest0-21swapper/212:00:312
2822199200,2cyclictest4968-21http_loadtime12:10:152
2822199200,2cyclictest28816-21kernelversion11:55:182
2822199200,1cyclictest7351-21expr12:15:152
2822199200,1cyclictest0-21swapper/211:15:182
2822199200,19cyclictest0-21swapper/211:10:142
2822199200,19cyclictest0-21swapper/209:45:132
2822199200,19cyclictest0-21swapper/208:20:162
2822199200,15cyclictest25530-21perf09:00:012
28217992017,2cyclictest17492-21fschecks_time11:35:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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