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2026-06-23 - 19:23
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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 rackfslot7.osadl.org (updated Tue Jun 23, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
907642999291,0cyclictest919037-21munin-run07:30:005
90764299889,59cyclictest1028164-21chrt10:46:045
907642998710,57cyclictest1051259-21kworker/u32:0+events_unbound11:30:225
907642998628,39cyclictest1063645-21ntp_kernel_pll_11:50:195
907642998527,39cyclictest1087039-21/usr/sbin/munin12:35:205
907642998244,38cyclictest933803-21wc07:55:175
907642998123,40cyclictest236199-21snmpd08:05:135
907642998022,39cyclictest1070398-21sed12:05:015
907642997416,39cyclictest1086-21runrttasks08:27:265
907652997314,19cyclictest0-21swapper/707:35:157
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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