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2025-05-03 - 02:05
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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
Characteristics of the 20 highest latencies:
System rackbslot1.osadl.org (updated Fri May 02, 2025 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4293472210185,14sleep30-21swapper/307:07:153
4294662204180,14sleep10-21swapper/107:08:221
4293062202178,14sleep20-21swapper/207:06:542
4294442193168,15sleep00-21swapper/007:08:100
46739621120,2sleep33451163-21chrome07:45:133
65754021070,2sleep345-21ksoftirqd/310:50:203
42984499924,86cyclictest649946-21snmp_wanswitch.10:45:033
429835997370,2cyclictest429177-21kworker/u8:5+events_unbound07:20:330
429838996252,9cyclictest481542-21kworker/u8:2+events_unbound08:50:101
429838996252,9cyclictest481542-21kworker/u8:2+events_unbound08:50:101
429842995954,4cyclictest588469-21kworker/u8:1+flush-179:009:50:162
429838995955,3cyclictest481542-21kworker/u8:2+flush-179:008:20:211
429838995652,3cyclictest588469-21kworker/u8:1+flush-179:009:50:311
429835995652,3cyclictest567465-21kworker/u8:0+flush-179:009:40:140
429842995549,4cyclictest618903-21kworker/u8:5+flush-179:010:25:172
429842995549,4cyclictest618903-21kworker/u8:5+flush-179:010:25:172
429838995550,4cyclictest429177-21kworker/u8:5+flush-179:007:25:221
429838995450,3cyclictest726642-21kworker/u8:2+events_unbound12:00:011
429838995450,3cyclictest547313-21kworker/u8:5+flush-179:009:20:291
429835995451,2cyclictest618903-21kworker/u8:5+flush-179:011:15:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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