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2026-06-03 - 04:24
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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 Wed Jun 03, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228881599136128,6cyclictest2376382-21kworker/u8:0+events_unbound00:00:011
228881599134124,7cyclictest2331223-21latency_hist21:35:001
228881299126118,5cyclictest2310514-21kworker/u8:0+events_unbound20:35:020
228881599121110,8cyclictest2329635-21latency_hist21:30:011
22888159911197,10cyclictest2365163-21latency_hist23:20:021
228881599111101,7cyclictest2324856-21latency_hist21:15:011
22888159910899,7cyclictest2291610-21kworker/u8:1+events_unbound19:45:011
228881599108101,5cyclictest2340763-21kworker/u8:2+events_unbound22:10:241
22888129910899,6cyclictest2313722-21latency_hist20:40:010
22888129910797,7cyclictest2292495-21latency_hist19:30:000
22888159910697,6cyclictest2332824-21latency_hist21:40:011
22888159910289,10cyclictest1213033-21systemd-journal23:05:261
22888159910196,4cyclictest2302348-21kworker/u8:2+events_unbound20:20:241
22888159910194,4cyclictest2340763-21kworker/u8:2+events_unbound22:25:001
22888159910091,7cyclictest2302348-21kworker/u8:2+flush-179:020:15:011
2288815999893,4cyclictest2373843-21kworker/u8:2+flush-179:023:50:241
2288815999889,7cyclictest2329682-21kworker/u8:3+events_unbound21:45:001
2288815999791,4cyclictest2320133-21kworker/u8:3+flush-179:021:05:241
2288815999791,4cyclictest2310514-21kworker/u8:0+flush-179:020:40:251
2288815999691,4cyclictest2378513-21kworker/u8:2+events_unbound00:25:241
2288815999591,3cyclictest2285617-21kworker/u8:0+flush-179:019:45:251
2288815999590,4cyclictest2329682-21kworker/u8:3+events_unbound21:50:251
2288815999589,4cyclictest2285619-21kworker/u8:2+events_unbound19:20:021
2288815999589,4cyclictest2285619-21kworker/u8:2+events_unbound19:20:021
2288815999581,6cyclictest2310587-21kworker/u8:2+flush-179:020:30:221
2288815999487,5cyclictest2285617-21kworker/u8:0+events_unbound20:05:001
2288815999384,6cyclictest2320056-21kworker/u8:0+events_unbound21:20:271
2288812999386,4cyclictest2340763-21kworker/u8:2+flush-179:023:30:240
2288815999287,3cyclictest2378513-21kworker/u8:2+events_unbound00:30:261
2288815999081,7cyclictest2363305-21latency_hist23:15:001
2288815998984,4cyclictest2340763-21kworker/u8:2+events_unbound22:15:251
2288815998982,5cyclictest2302348-21kworker/u8:2+flush-179:020:05:241
2288815998880,6cyclictest2288785-21kworker/u8:1+events_unbound19:10:241
2288815998777,7cyclictest2373843-21kworker/u8:2+events_unbound23:45:171
2288812998778,6cyclictest2381427-21/usr/sbin/munin00:10:240
2288815998682,3cyclictest2285617-21kworker/u8:0+events_unbound19:20:191
2288812998678,6cyclictest2340763-21kworker/u8:2+events_unbound22:40:010
2288815998579,4cyclictest2340763-21kworker/u8:2+events_unbound23:00:161
2288815998579,4cyclictest2340763-21kworker/u8:2+events_unbound23:00:151
2288815998578,5cyclictest2285617-21kworker/u8:0+events_unbound20:15:151
2288815998477,4cyclictest2285617-21kworker/u8:0+events_unbound19:30:171
2288812998377,3cyclictest2320056-21kworker/u8:0+events_unbound21:25:150
2288815998176,4cyclictest2291610-21kworker/u8:1+events_unbound19:50:241
2288815997974,4cyclictest2285617-21kworker/u8:0+flush-179:019:55:241
2288815997872,4cyclictest2310587-21kworker/u8:2+events_unbound20:50:181
2288815997773,3cyclictest2323260-21kworker/u8:1+flush-179:021:19:561
2288815997773,3cyclictest2323260-21kworker/u8:1+flush-179:021:19:561
2288815997772,4cyclictest2320133-21kworker/u8:3+flush-179:021:00:271
2288812997772,3cyclictest2369922-21kworker/u8:1+flush-179:023:40:150
2288815997667,6cyclictest2310535-21latency_hist20:30:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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