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2025-11-27 - 22:47
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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 Thu Nov 27, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31862969910190,8cyclictest3215127-21latency_hist08:40:000
3186297999884,11cyclictest3224679-21latency_hist09:10:011
3186296998979,8cyclictest3192553-21latency_hist07:30:010
3186296998780,5cyclictest3283566-21kworker/u8:2+events_unbound12:15:010
3186296998681,4cyclictest3228181-21kworker/u8:0+flush-179:009:25:010
3186297998346,34cyclictest723-21Xorg08:58:581
3186297998346,34cyclictest723-21Xorg08:58:581
3186296998373,8cyclictest3281688-21latency_hist12:05:010
3186297998273,6cyclictest3206903-21latency_hist08:15:011
3186297998273,6cyclictest3206903-21latency_hist08:15:011
3186296998277,4cyclictest3246403-21kworker/u8:2+flush-179:010:45:000
3186296998173,6cyclictest3276943-21kworker/u8:0+events_unbound12:00:000
3186296998075,4cyclictest3184696-21kworker/u8:3+flush-179:007:55:230
3186296998073,5cyclictest3234734-21kworker/u8:2+flush-179:009:50:140
3186296997867,8cyclictest3290162-21latency_hist12:30:000
3186297997771,4cyclictest3187807-21kworker/u8:2+flush-179:007:25:011
3186297997564,8cyclictest271-21systemd-journal07:20:011
3186297997366,4cyclictest3200569-21kworker/u8:1+flush-179:008:20:231
3186296997366,5cyclictest3246403-21kworker/u8:2+events_unbound10:30:230
3186297997252,9cyclictest271-21systemd-journal10:56:271
3186296997268,3cyclictest3246403-21kworker/u8:2+flush-179:010:55:350
3186296997266,4cyclictest3246403-21kworker/u8:2+flush-179:011:30:180
3186296997261,8cyclictest3267611-21/usr/sbin/munin11:20:250
3186297997161,7cyclictest3219900-21latency_hist08:55:011
318629699710,69cyclictest723-21Xorg09:28:580
3186297997063,5cyclictest3200569-21kworker/u8:1+flush-179:008:19:591
3186296997065,3cyclictest3184643-21kworker/u8:1+events_unbound07:20:000
3186296997060,7cyclictest3262544-21latency_hist11:05:020
3186296996863,4cyclictest3260723-21kworker/u8:1+events_unbound11:05:240
3186296996863,4cyclictest3200569-21kworker/u8:1+events_unbound08:20:210
318629699680,66cyclictest3273776-21munin-run11:40:010
3186297996761,5cyclictest3239824-21kworker/u8:3+events_unbound10:00:011
3186296996764,2cyclictest3187807-21kworker/u8:2+flush-179:007:40:000
3186296996762,4cyclictest3256014-21kworker/u8:3+flush-179:010:50:210
3186296996760,5cyclictest3246403-21kworker/u8:2+flush-179:011:50:140
3186296996662,3cyclictest3260723-21kworker/u8:1+flush-179:011:10:230
3186297996458,4cyclictest3262577-21kworker/u8:3+flush-179:011:25:261
3186296996356,5cyclictest3184696-21kworker/u8:3+events_unbound08:30:190
3186296996355,6cyclictest3246403-21kworker/u8:2+flush-179:010:35:210
3186296996352,9cyclictest3236363-21apt-get09:45:000
3186296996352,9cyclictest3236363-21apt-get09:45:000
3186297996156,3cyclictest3236487-21kworker/u8:0+flush-179:010:10:181
3186296996051,6cyclictest3218312-21latency_hist08:50:010
3186297995948,9cyclictest3230266-21diskstats09:25:151
3186297995948,7cyclictest3246403-21kworker/u8:2+flush-179:010:20:161
3186297995945,13cyclictest3236487-21kworker/u8:0+flush-179:009:55:001
3186296995953,5cyclictest3262577-21kworker/u8:3+flush-179:011:25:290
3186296995953,4cyclictest3275315-21kworker/u8:3+flush-179:011:45:250
3186297995849,7cyclictest3246403-21kworker/u8:2+flush-179:011:40:211
3186297995751,4cyclictest3184696-21kworker/u8:3+events_unbound08:30:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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