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2026-04-03 - 03:44
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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 20 highest latencies:
System rackfslot7.osadl.org (updated Fri Apr 03, 2026 00:46:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
408995991210,119cyclictest0-21swapper/423:25:014
40899799109109,0cyclictest0-21swapper/619:55:166
408995998324,59cyclictest441713-21chrt20:07:464
40899599824,59cyclictest509912-21meminfo22:10:174
40899599824,59cyclictest509912-21meminfo22:10:174
408994997639,19cyclictest511ktimers/321:20:153
408995997537,19cyclictest498245-21grep21:50:144
408995997416,39cyclictest437397-21awk20:00:144
408995997013,38cyclictest4062491-21kworker/u32:5+events_unbound19:25:044
408995996929,39cyclictest586519-21sed00:30:014
408995996911,39cyclictest458126-21sed20:35:224
408991996968,1cyclictest0-21swapper/020:25:180
40899199690,67cyclictest0-21swapper/023:25:010
40899599678,58cyclictest486089-21munin-run21:30:014
408995996729,38cyclictest428433-21/usr/sbin/munin19:45:164
408995996527,19cyclictest540454-21missed_timers23:05:174
408995996022,19cyclictest601ktimers/421:40:184
408991996022,38cyclictest171ktimers/020:50:140
408995995738,19cyclictest408986-21cyclictest00:01:354
40899599570,38cyclictest474264-21cat21:05:244
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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