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2026-04-09 - 14:08
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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 rack1slot1.osadl.org (updated Thu Apr 09, 2026 12:45:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140822215157,25sleep30-21swapper/307:05:013
161372199158,26sleep20-21swapper/207:09:152
160382197153,22sleep00-21swapper/007:07:570
160292197160,24sleep10-21swapper/107:07:491
112892590,0sleep20-21swapper/211:15:202
28092250,0sleep00-21swapper/011:47:300
16287992120,1cyclictest9-21ksoftirqd/009:20:000
16287992019,1cyclictest9-21ksoftirqd/010:25:140
16287992018,1cyclictest9-21ksoftirqd/010:00:110
99492190,0sleep10-21swapper/108:00:191
16287991919,0cyclictest9-21ksoftirqd/008:35:010
16287991818,0cyclictest9-21ksoftirqd/007:50:200
1630399170,1cyclictest32250-21grep11:00:222
1630399170,1cyclictest0-21swapper/212:20:002
16287991716,1cyclictest9-21ksoftirqd/011:55:110
16287991710,1cyclictest9-21ksoftirqd/009:45:000
1631199160,1cyclictest32249-21grep11:00:233
1630399160,1cyclictest0-21swapper/211:45:162
16287991616,0cyclictest9-21ksoftirqd/012:35:200
1631199150,1cyclictest27533-21df12:20:133
1630399150,2cyclictest26268-21sort10:55:002
1630399150,14cyclictest0-21swapper/212:35:012
1630399150,1cyclictest31844-21df_inode07:40:142
1630399150,1cyclictest22960-21ssh11:30:202
1630399150,1cyclictest22252-21ssh12:13:192
1630399150,1cyclictest18799-21hddtemp_smartct08:20:142
1630399150,1cyclictest17695-21diskstats11:25:132
1630399150,1cyclictest0-21swapper/209:05:172
16287991515,0cyclictest9-21ksoftirqd/010:21:070
16287991514,1cyclictest9-21ksoftirqd/012:03:250
138212150,0sleep10-21swapper/112:01:131
1631199140,1cyclictest7302-21memory12:35:163
1631199140,1cyclictest0-21swapper/309:48:363
1630399142,11cyclictest2112-21uname09:40:142
16303991411,3cyclictest0-21swapper/209:24:142
1630399140,2cyclictest0-21swapper/210:09:522
1630399140,1cyclictest4944-21df_inode09:00:122
1630399140,1cyclictest14329-21latency11:20:142
1630399140,1cyclictest0-21swapper/207:30:122
16287991414,0cyclictest9-21ksoftirqd/011:30:360
16287991414,0cyclictest9-21ksoftirqd/010:57:560
16287991414,0cyclictest9-21ksoftirqd/010:07:130
16287991413,1cyclictest9-21ksoftirqd/011:52:530
16287991413,1cyclictest9-21ksoftirqd/011:28:390
16287991413,1cyclictest9-21ksoftirqd/010:35:350
16287991413,1cyclictest9-21ksoftirqd/010:00:000
16287991413,1cyclictest9-21ksoftirqd/009:30:000
16287991413,1cyclictest9-21ksoftirqd/008:45:170
16287991412,1cyclictest9-21ksoftirqd/007:55:020
1631199130,1cyclictest4625-21memory07:50:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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