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2026-06-14 - 23:40
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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 Sun Jun 14, 2026 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2513399142128,10cyclictest80192-21latency_hist10:00:011
2513099128117,9cyclictest1213033-21systemd-journal09:35:000
2513399122109,9cyclictest510-21rs:main1
2513399117108,6cyclictest98171-21kworker/u8:2+flush-179:011:09:591
2513099115102,10cyclictest1213033-21systemd-journal12:40:000
251339910796,7cyclictest118864-21kworker/u8:2+flush-179:012:00:011
251339910596,7cyclictest57116-21latency_hist08:50:011
251309910494,7cyclictest117034-21latency_hist11:55:010
25133999788,6cyclictest115448-21latency_hist11:50:011
25133999788,6cyclictest115448-21latency_hist11:50:011
25133999582,10cyclictest1213033-21systemd-journal08:10:011
25130999589,4cyclictest93141-21kworker/u8:0+flush-179:010:45:200
25133999482,10cyclictest41203-21apt-get08:00:121
25130999384,6cyclictest123642-21kworker/u8:1+flush-179:012:35:010
25130999382,8cyclictest1213033-21systemd-journal10:15:010
25130999284,5cyclictest103763-21kworker/u8:3+events_unbound11:30:160
25130999283,6cyclictest42771-21kworker/u8:3+flush-179:008:05:240
25133999182,6cyclictest12318-21kworker/u8:2+events_unbound07:15:001
25133999081,6cyclictest117047-21apt-get11:54:591
25133998471,9cyclictest99801-21kworker/u8:0+flush-179:012:00:221
25130998477,5cyclictest12318-21kworker/u8:2+flush-179:007:45:220
25130998376,5cyclictest70349-21kworker/u8:0+flush-179:009:40:220
25130998277,3cyclictest23517-21kworker/u8:1+flush-179:007:10:160
25130998275,5cyclictest50790-21kworker/u8:2+flush-179:008:40:210
25130998275,5cyclictest50790-21kworker/u8:2+flush-179:008:40:210
25130998274,6cyclictest99801-21kworker/u8:0+flush-179:011:40:210
25130998175,4cyclictest102757-21kworker/u8:1+flush-179:011:10:140
25130998171,7cyclictest47616-21kworker/u8:3+flush-179:008:25:220
25133998071,6cyclictest63741-21latency_hist09:10:011
25130998077,2cyclictest47616-21kworker/u8:3+events_unbound09:05:030
25130998071,6cyclictest113835-21kworker/u8:2+flush-179:011:45:170
25130998071,6cyclictest113835-21kworker/u8:2+flush-179:011:45:160
25133997972,5cyclictest91555-21kworker/u8:1+flush-179:010:35:191
25130997969,7cyclictest23517-21kworker/u8:1+flush-179:007:25:240
25130997869,6cyclictest50790-21kworker/u8:2+flush-179:009:10:230
25130997865,10cyclictest104844-21diskstats11:15:150
25130997768,7cyclictest49167-21latency_hist08:25:010
25133997665,9cyclictest52596-21apt-get08:35:111
25130997668,5cyclictest91555-21kworker/u8:1+events_unbound11:00:220
25133997567,6cyclictest109339-21apt-get11:30:101
25133997564,8cyclictest39340-21latency_hist07:55:011
25130997569,4cyclictest103763-21kworker/u8:3+flush-179:011:25:210
25130997567,6cyclictest70349-21kworker/u8:0+flush-179:010:05:250
25130997466,6cyclictest1213033-21systemd-journal10:40:020
25130997461,10cyclictest78317-21latency_hist09:55:000
25130997365,6cyclictest47616-21kworker/u8:3+flush-179:008:30:220
25130997361,9cyclictest126853-21latency_hist12:25:020
25133997263,7cyclictest68780-21latency_hist09:25:011
25133997262,8cyclictest110927-21apt-get11:35:111
25133997162,6cyclictest85437-21kworker/u8:2+flush-179:010:25:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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