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2025-12-09 - 03:46
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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 rackbslot7.osadl.org (updated Tue Dec 09, 2025 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3999991313,34cyclictest11084-21apt-get22:58:342
3999991313,34cyclictest11084-21apt-get22:58:342
297121309,91sleep22496-21/usr/sbin/munin19:03:502
3285212110,79sleep13374-21/usr/sbin/munin19:04:021
288721097,79sleep00-21swapper/019:03:480
83121060,10sleep2371rcuc/220:34:552
83121060,10sleep2371rcuc/220:34:552
3992991022,71cyclictest2505-21ssh22:43:320
39999910156,38cyclictest355-21runrttasks21:48:332
39999910156,38cyclictest355-21runrttasks21:48:332
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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