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2026-06-29 - 20:37
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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 Mon Jun 29, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291707999130120,7cyclictest2929741-21latency_hist07:50:011
291707999127117,7cyclictest2959754-21latency_hist09:20:011
291707999126118,6cyclictest2980449-21kworker/u8:0+events_unbound10:25:011
291707999124113,8cyclictest2921760-21latency_hist07:25:011
291707999123112,8cyclictest3009379-21latency_hist11:55:011
291707899123109,11cyclictest2941154-21latency_hist08:25:010
291707999119107,4cyclictest2967650-21kworker/u8:0+events_unbound09:50:161
291707999116107,6cyclictest2921795-21kworker/u8:2+events_unbound08:00:201
291707899113106,4cyclictest2991911-21kworker/u8:1+events_unbound11:05:230
291707899113101,8cyclictest2915487-21kworker/u8:3+flush-179:007:15:010
29170789911199,6cyclictest2942466-21kworker/u8:2+events_unbound08:25:240
291707899111104,5cyclictest3001399-21kworker/u8:0+flush-179:011:35:000
29170799910595,7cyclictest2921194-21kworker/u8:1+events_unbound07:30:211
29170789910292,7cyclictest2988424-21latency_hist10:50:010
29170789910196,4cyclictest2942466-21kworker/u8:2+flush-179:008:55:230
29170789910187,11cyclictest2990017-21apt-get10:54:590
29170799910087,6cyclictest2976345-21kworker/u8:0+events_unbound10:10:201
2917079999986,5cyclictest2998921-21kworker/u8:1+events_unbound12:00:151
2917078999993,4cyclictest2942466-21kworker/u8:2+events_unbound08:30:210
2917078999992,5cyclictest3003002-21kworker/u8:3+flush-179:011:35:170
2917078999989,7cyclictest2944884-21kworker/u8:0+events_unbound09:05:010
2917079999891,5cyclictest2986823-21kworker/u8:2+events_unbound11:00:191
2917079999885,11cyclictest2932939-21apt-get08:00:001
2917078999893,3cyclictest2955222-21kworker/u8:2+events_unbound09:15:020
2917078999893,3cyclictest2955222-21kworker/u8:2+events_unbound09:15:020
2917079999690,4cyclictest2974140-21kworker/u8:3+flush-179:010:25:251
2917078999688,5cyclictest2995084-21kworker/u8:0+flush-179:011:15:270
2917078999586,6cyclictest2942466-21kworker/u8:2+events_unbound08:45:150
2917079999486,6cyclictest2998921-21kworker/u8:1+events_unbound11:25:141
2917079999486,5cyclictest2959736-21kworker/u8:3+events_unbound09:25:131
2917079999388,4cyclictest3017326-21kworker/u8:2+flush-179:012:25:011
2917079999387,5cyclictest3010952-21kworker/u8:0+flush-179:012:30:211
2917078999381,9cyclictest3001399-21kworker/u8:0+flush-179:011:45:220
2917079999286,4cyclictest2967769-21kworker/u8:2+flush-179:010:00:201
2917079999285,6cyclictest3008798-21kworker/u8:2+events_unbound11:55:211
2917079999282,7cyclictest2978877-21latency_hist10:20:011
2917078999286,4cyclictest2933432-21kworker/u8:0+events_unbound08:05:240
2917078999284,5cyclictest3010952-21kworker/u8:0+events_unbound12:30:180
2917079999187,3cyclictest2924773-21kworker/u8:0+flush-179:007:36:401
2917079999183,6cyclictest1213033-21systemd-journal11:50:011
2917078999181,7cyclictest2916950-21latency_hist07:10:020
2917079999085,4cyclictest2986881-21kworker/u8:3+flush-179:010:50:251
2917079999084,4cyclictest2998921-21kworker/u8:1+flush-179:012:15:211
2917079999084,4cyclictest2967769-21kworker/u8:2+events_unbound10:05:221
2917079998984,3cyclictest2977253-21kworker/u8:1+events_unbound10:35:221
2917079998983,4cyclictest2931362-21kworker/u8:1+events_unbound08:05:181
2917078998980,7cyclictest3020774-21kworker/u8:3+events_unbound12:35:270
2917079998881,5cyclictest2953355-21kworker/u8:1+events_unbound09:00:231
2917079998877,5cyclictest2980449-21kworker/u8:0+events_unbound10:40:221
2917078998881,5cyclictest2974140-21kworker/u8:3+events_unbound10:15:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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