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2026-06-26 - 17:35
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Fri Jun 26, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315913399146138,5cyclictest3238391-21kworker/u8:3+flush-179:011:33:370
315913799135125,7cyclictest3254675-21latency_hist12:05:011
315913799125117,5cyclictest3244756-21apt-get11:33:291
315913799125115,7cyclictest3168608-21latency_hist07:40:011
315913799116105,8cyclictest3217641-21kworker/u8:1+flush-179:010:20:231
31591379910891,14cyclictest3197509-21latency_hist09:10:001
31591339910797,8cyclictest1213033-21systemd-journal10:40:010
31591379910595,7cyclictest3256261-21latency_hist12:10:011
31591379910495,6cyclictest3162218-21latency_hist07:20:011
31591339910393,7cyclictest3238278-21kworker/u8:1+events_unbound12:15:000
31591339910294,6cyclictest3238278-21kworker/u8:1+flush-179:011:40:000
31591339910291,6cyclictest3188009-21kworker/u8:1+flush-179:008:45:220
31591379910192,6cyclictest3204401-21latency_hist09:30:011
3159137999888,7cyclictest3265818-21latency_hist12:40:011
3159133999890,5cyclictest3217695-21kworker/u8:2+events_unbound10:55:230
3159133999890,5cyclictest3217695-21kworker/u8:2+events_unbound10:55:220
3159133999890,5cyclictest3205411-21kworker/u8:0+flush-179:010:05:160
3159133999791,4cyclictest3205411-21kworker/u8:0+flush-179:009:50:010
3159133999787,8cyclictest1213033-21systemd-journal08:00:000
3159133999782,12cyclictest3207893-21gpgv09:40:020
3159133999690,4cyclictest3199076-21kworker/u8:1+flush-179:009:15:220
315914299950,1cyclictest0-21swapper/307:25:593
315914299950,1cyclictest0-21swapper/307:25:583
3159137999586,6cyclictest3238391-21kworker/u8:3+flush-179:011:25:011
3159133999590,4cyclictest3184769-21kworker/u8:0+events_unbound08:30:010
3159133999582,9cyclictest3205411-21kworker/u8:0+flush-179:010:00:000
3159137999285,5cyclictest3191399-21apt-get08:50:121
3159133999084,5cyclictest3238391-21kworker/u8:3+events_unbound11:30:000
3159133999079,4cyclictest3211064-21kworker/u8:3+events_unbound09:50:260
3159137998979,7cyclictest1213033-21systemd-journal07:25:011
3159137998975,10cyclictest3215814-21latency_hist10:05:021
3159133998983,4cyclictest3243187-21kworker/u8:2+flush-179:011:40:210
3159137998877,8cyclictest1213033-21systemd-journal12:00:001
3159137998782,4cyclictest3199076-21kworker/u8:1+flush-179:009:15:211
3159133998781,4cyclictest3217695-21kworker/u8:2+flush-179:010:40:220
3159133998780,4cyclictest3169624-21kworker/u8:0+events_unbound08:20:230
3159133998777,7cyclictest3192965-21kworker/u8:0+flush-179:009:05:230
3159133998775,9cyclictest3178666-21apt-get08:10:110
3159137998678,5cyclictest3231987-21latency_hist10:55:021
3159133998680,4cyclictest3238278-21kworker/u8:1+flush-179:011:55:010
3159133998678,5cyclictest3259448-21latency_hist12:20:010
3159137998574,8cyclictest3190614-21kworker/u8:3+flush-179:009:00:011
3159133998580,4cyclictest3190614-21kworker/u8:3+flush-179:009:00:210
3159137998476,5cyclictest3264219-21latency_hist12:35:001
3159137998374,7cyclictest3172302-21apt-get07:50:101
3159137998374,7cyclictest3172302-21apt-get07:50:101
3159133998377,4cyclictest3222425-21kworker/u8:3+flush-179:010:34:210
3159133998377,4cyclictest3200926-21kworker/u8:2+flush-179:009:20:150
3159133998377,4cyclictest3169624-21kworker/u8:0+flush-179:007:40:240
3159133998376,5cyclictest3159058-21kworker/u8:1+events_unbound08:00:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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