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2024-05-26 - 17:17
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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 rackeslot6.osadl.org (updated Sun May 26, 2024 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
80830699128120,6cyclictest808001-21kworker/u8:3+flush-179:019:10:151
80830299126115,8cyclictest2158010-21systemd-journal19:10:210
80830699117105,9cyclictest835236-21kworker/u8:2+flush-179:020:40:011
80830299116102,11cyclictest829624-21apt-get20:15:130
80830299115108,5cyclictest835236-21kworker/u8:2+events_unbound20:40:140
80830699114106,6cyclictest888810-21kworker/u8:2+flush-179:023:30:311
80830299111104,6cyclictest901830-21kworker/u8:1+events_unbound00:05:010
80830299107100,5cyclictest822738-21kworker/u8:1+flush-179:020:05:130
8083029910592,10cyclictest887484-21apt-get23:15:100
8083069910493,8cyclictest848764-21/usr/sbin/munin21:15:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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