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2025-07-14 - 22:57
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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 10 highest latencies:
System rack0slot7.osadl.org (updated Mon Jul 14, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
309821799388388,0cyclictest27650irq/126-ahci[0000:00:17.0]21:05:453
309823099352351,1cyclictest0-21swapper/1519:28:077
309819199337336,1cyclictest2112-21snmpd19:28:0710
309822099296296,0cyclictest0-21swapper/1219:28:074
309817799292283,8cyclictest4115095-21Renderer21:07:440
309817799289282,6cyclictest0-21swapper/019:58:090
3098177992890,287cyclictest0-21swapper/022:44:260
309821299288282,5cyclictest9400-21Xorg00:29:482
3098212992880,283cyclictest0-21swapper/1020:37:522
309821099288283,4cyclictest4115095-21Renderer21:01:3915
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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