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2025-05-02 - 12:56
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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 May 01, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31474402207178,20sleep10-21swapper/107:07:261
31473222197174,14sleep20-21swapper/207:06:222
31476822190165,15sleep00-21swapper/007:09:380
31474042190166,14sleep30-21swapper/307:07:073
3147891996863,3cyclictest3368177-21snmp_wlanpowerc10:45:020
3147891996759,6cyclictest3451129-21HangWatcher12:25:170
3147894996661,3cyclictest3605936-13chrome11:45:031
3147894996359,3cyclictest3460025-21kworker/u8:1+flush-179:012:20:171
3147894996359,3cyclictest3460025-21kworker/u8:1+flush-179:012:20:171
3147894996157,3cyclictest3460774-21apt-get12:15:081
3147894996054,4cyclictest3403643-21/usr/share/muni11:20:151
3147891996055,4cyclictest3161312-21kworker/u8:4+flush-179:007:40:320
3147894995954,4cyclictest2721483-21apache212:25:031
3147891995752,4cyclictest3439429-21/usr/share/muni11:55:150
3147891995652,3cyclictest3413336-21kworker/u8:4+flush-179:012:10:170
3147894995548,4cyclictest3439429-21/usr/share/muni11:55:101
3147891995552,2cyclictest3280871-21kworker/u8:0+flush-179:010:00:180
3147891995551,3cyclictest3132184-21kworker/u8:3+flush-179:007:15:140
3147897995450,3cyclictest3423457-21kworker/u8:0+flush-179:011:56:112
3147891995250,2cyclictest3258774-21kworker/u8:2+flush-179:009:50:350
3147891995248,3cyclictest3449010-21kworker/u8:2+flush-179:012:05:010
314789199520,50cyclictest3184877-21exe07:45:020
3147897995130,20cyclictest3368140-21Chrome_ChildIOT10:45:122
3147894995136,3cyclictest3184867-21chrome07:45:021
3147891995148,2cyclictest3413336-21kworker/u8:4+flush-179:012:05:210
3147891995148,2cyclictest3258774-21kworker/u8:2+flush-179:009:20:170
3147891995147,3cyclictest3258774-21kworker/u8:2+flush-179:009:59:080
3147891995147,3cyclictest3258774-21kworker/u8:2+flush-179:009:59:080
3147891995146,3cyclictest3351832-21kworker/u8:1+events_unbound10:35:180
3147901995041,7cyclictest3164572-21/usr/share/muni07:25:083
3147897995047,2cyclictest3423457-21kworker/u8:0+flush-179:012:05:012
3147891995047,2cyclictest3280871-21kworker/u8:0+flush-179:011:05:180
3147891995046,3cyclictest3111643-21kworker/u8:1+events_unbound08:38:180
3147891995044,4cyclictest3398506-21/usr/share/muni11:15:040
314789199500,48cyclictest3606033-13Compositor09:00:180
3147901994944,3cyclictest3460091-21latency_hist12:15:013
3147897994945,3cyclictest3111643-21kworker/u8:1+flush-179:007:45:202
3147891994945,3cyclictest3362199-21kworker/u8:3+flush-179:011:20:170
3147897994844,3cyclictest3280871-21kworker/u8:0+flush-179:010:10:342
3147897994844,3cyclictest3280871-21kworker/u8:0+events_unbound10:20:182
3147897994844,3cyclictest3189323-21kworker/u8:0+flush-179:008:20:322
3147891994844,3cyclictest3258774-21kworker/u8:2+flush-179:009:15:170
3147897994745,1cyclictest3347483-21kworker/2:0+pm10:29:382
3147897994743,3cyclictest3137291-21kworker/u8:2+flush-179:007:40:082
3147897994738,6cyclictest3226001-21/usr/share/muni08:25:042
3147894994741,4cyclictest3266366-21/usr/share/muni09:05:041
3147894994741,4cyclictest3266366-21/usr/share/muni09:05:041
3147891994744,2cyclictest3377745-21kworker/u8:1+flush-179:011:35:340
3147891994743,3cyclictest3377745-21kworker/u8:1+flush-179:011:42:230
33377702460,1chrt3337765-21apache_volume10:15:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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