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2026-09-06 - 01:10
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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 Sat Sep 05, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275085099152138,11cyclictest1213033-21systemd-journal09:40:010
275085299147138,6cyclictest2839583-21latency_hist11:45:001
275085099145117,18cyclictest2784690-21latency_hist08:55:020
275085299139130,5cyclictest2806275-21kworker/u8:0+events_unbound10:05:241
275085299134124,4cyclictest2830261-21kworker/u8:2+events_unbound11:45:021
275085299132120,9cyclictest2800617-21latency_hist09:45:011
275085299131126,4cyclictest2841416-21kworker/u8:0+events_unbound12:05:251
275085299131119,9cyclictest2852574-21latency_hist12:25:021
275085299129119,7cyclictest2818371-21latency_hist10:40:011
275085299126120,4cyclictest2830261-21kworker/u8:2+flush-179:011:50:241
275085299126117,7cyclictest2760512-21kworker/u8:0+events_unbound07:55:161
275085299126117,6cyclictest2753964-21kworker/u8:2+events_unbound07:25:221
275085099122109,9cyclictest2837384-21kworker/u8:1+flush-179:011:45:140
275085299121111,7cyclictest2841416-21kworker/u8:0+events_unbound11:55:201
275085099121111,7cyclictest2760512-21kworker/u8:0+flush-179:007:45:000
275085299120110,8cyclictest2778325-21latency_hist08:35:001
275085099120104,11cyclictest2829775-21apt-get11:15:000
275085299119106,10cyclictest2826577-21kworker/u8:0+flush-179:011:15:171
27508529911899,5cyclictest2818351-21kworker/u8:3+events_unbound10:40:151
275085299118112,4cyclictest2768563-21kworker/u8:2+flush-179:010:25:151
275085099118109,6cyclictest2806275-21kworker/u8:0+flush-179:010:00:250
275085099117108,6cyclictest2849367-21kworker/u8:2+flush-179:012:35:240
275085099117102,10cyclictest2760541-21kworker/u8:3+flush-179:007:50:210
275085299116111,3cyclictest2768563-21kworker/u8:2+events_unbound08:10:231
275085299116110,5cyclictest2826577-21kworker/u8:0+events_unbound11:20:241
275085099114103,8cyclictest2752557-21kworker/u8:0+flush-179:007:25:240
275085299113108,4cyclictest2841416-21kworker/u8:0+events_unbound12:00:271
275085299113100,4cyclictest2824962-21kworker/u8:1+events_unbound11:05:221
275085099113106,5cyclictest1-21systemd08:20:000
275085299111106,3cyclictest2760512-21kworker/u8:0+events_unbound08:00:251
275085299111106,3cyclictest2760512-21kworker/u8:0+events_unbound08:00:251
275085099111105,4cyclictest2752557-21kworker/u8:0+flush-179:007:20:210
275085099111102,6cyclictest2753919-21latency_hist07:20:010
275085299110105,4cyclictest2849367-21kworker/u8:2+flush-179:012:30:251
27508509911099,7cyclictest2775500-21kworker/u8:1+flush-179:008:25:180
27508529910898,4cyclictest2824962-21kworker/u8:1+events_unbound11:00:221
275085299108102,4cyclictest2768563-21kworker/u8:2+events_unbound09:50:251
27508509910891,5cyclictest2749254-21kworker/u8:1+flush-179:007:10:240
275085099108101,5cyclictest2787929-21kworker/u8:0+flush-179:009:10:170
27508529910798,6cyclictest2768563-21kworker/u8:2+events_unbound10:10:181
27508529910798,3cyclictest2811059-21kworker/u8:1+events_unbound10:15:251
275085299107101,4cyclictest2820264-21kworker/u8:2+flush-179:010:45:161
275085299107101,4cyclictest2791041-21kworker/u8:1+events_unbound09:25:171
275085299107101,4cyclictest2753964-21kworker/u8:2+events_unbound07:20:191
27508509910697,5cyclictest2760541-21kworker/u8:3+flush-179:007:55:230
27508509910693,8cyclictest2760541-21kworker/u8:3+flush-179:007:45:210
275085299105101,3cyclictest2826577-21kworker/u8:0+events_unbound11:25:241
275085299105100,3cyclictest2795872-21kworker/u8:3+flush-179:009:55:231
27508529910498,4cyclictest2791041-21kworker/u8:1+flush-179:009:20:181
27508529910493,9cyclictest1213033-21systemd-journal08:10:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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