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2025-07-04 - 07:27
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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 rackbslot1.osadl.org (updated Thu Jul 03, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33287212221178,32sleep00-21swapper/007:06:280
33289552218168,40sleep30-21swapper/307:09:283
33288792207183,14sleep20-21swapper/207:08:272
33286942207183,14sleep10-21swapper/107:06:091
3329238996359,2cyclictest3607174-21chrome11:45:021
3329245996256,3cyclictest3504912-31munin-html10:00:373
3329245996256,3cyclictest3504912-31munin-html10:00:373
332924599617,54cyclictest3520737-21kworker/u8:2+efi_rts_wq10:37:013
3329240995235,16cyclictest3328709-21kworker/u8:1+flush-179:007:30:332
3329238995248,3cyclictest3270330-21kworker/u8:2+events_unbound07:10:101
3329245995147,3cyclictest3434867-21kworker/u8:2+events_unbound09:10:423
3329235995148,2cyclictest40659-13Chrome_ChildIOT10:00:360
3329235995148,2cyclictest40659-13Chrome_ChildIOT10:00:360
3329235995147,3cyclictest3425147-21kworker/u8:4+flush-179:009:05:440
3329238995038,9cyclictest3460245-21kworker/u8:2+flush-179:009:25:251
3329240994946,2cyclictest3273758-1kworker/2:2H+kblockd11:45:022
3329235994944,3cyclictest3425146-21kworker/u8:3+flush-179:008:46:100
3329240994834,2cyclictest3424175-21kworker/2:2+pm09:55:332
3329238994844,3cyclictest3454888-21kworker/u8:0+events_unbound09:40:351
3329240994744,2cyclictest3617497-21kworker/u8:0+flush-179:012:10:172
332924099470,46cyclictest3333682-31munin-graph07:11:012
3329238994744,2cyclictest3520737-21kworker/u8:2+flush-179:010:50:101
3329238994742,2cyclictest3491162-21kworker/u8:4+events_unbound10:11:081
3329238994742,2cyclictest3491162-21kworker/u8:4+events_unbound10:11:081
332923599479,38cyclictest3528580-21kworker/u8:3+efi_rts_wq10:36:580
3329240994633,2cyclictest3601138-21kworker/2:2+pm12:04:372
3329238994644,2cyclictest3328709-21kworker/u8:1+events_unbound08:05:141
3329238994642,3cyclictest3399651-21kworker/u8:0+events_unbound08:16:411
3329245994542,2cyclictest3576107-21kworker/u8:4+events_unbound11:21:073
3329245994542,2cyclictest3576107-21kworker/u8:4+events_unbound11:21:073
3329240994533,11cyclictest3601138-21kworker/2:2+pm11:56:292
3329240994533,11cyclictest3601138-21kworker/2:2+pm11:56:292
3329238994543,2cyclictest3576107-21kworker/u8:4+events_unbound11:25:291
3329238994542,3cyclictest3576107-21kworker/u8:4+events_unbound11:50:071
3329238994541,3cyclictest3584550-21kworker/u8:2+events_unbound11:35:201
3329245994441,2cyclictest3425146-21kworker/u8:3+events_unbound08:45:023
3329240994439,4cyclictest40612-21ThreadPoolForeg10:20:222
3329240994431,12cyclictest3424175-21kworker/2:2+pm09:19:012
3329238994440,3cyclictest3434867-21kworker/u8:2+events_unbound09:01:371
3329245994340,2cyclictest3528580-21kworker/u8:3+flush-179:011:01:133
3329235994336,5cyclictest40614-21Chrome_ChildIOT11:00:420
3329245994238,3cyclictest3374866-21kworker/u8:2+events_unbound07:55:373
3329240994237,4cyclictest3505895-21/usr/share/muni10:05:152
3329238994239,2cyclictest3328709-21kworker/u8:1+events_unbound08:25:361
3329235994238,3cyclictest3328709-21kworker/u8:1+flush-179:008:30:280
3329245994136,3cyclictest3622538-21latency_hist12:00:003
3329245994136,3cyclictest3622538-21latency_hist12:00:003
3329240994131,9cyclictest3505418-21kworker/2:0+pm11:15:162
3329238994139,2cyclictest3576107-21kworker/u8:4+events_unbound11:41:181
3329238994138,2cyclictest3645182-21kworker/u8:2+events_unbound12:35:541
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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