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2025-05-09 - 10:12
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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 10 highest latencies:
System rackbslot1.osadl.org (updated Thu May 08, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7803812206183,13sleep10-21swapper/107:07:531
7802842200163,27sleep00-21swapper/007:06:590
7803312196172,14sleep20-21swapper/207:07:252
7803032182159,13sleep30-21swapper/307:07:103
89030121240,2sleep0890280-31munin-html10:05:420
78083299901,56cyclictest3606026-21chrome07:45:011
78084099662,63cyclictest950130-21kworker/u8:0+efi_rts_wq12:34:313
780832996662,3cyclictest805444-21kworker/u8:2+flush-179:009:15:211
780835996255,4cyclictest965790-21/usr/share/muni12:10:032
780835996155,5cyclictest949959-21CacheThread_Blo11:45:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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