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2025-12-15 - 02:14
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackeslot4.osadl.org (updated Sun Dec 14, 2025 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176967799322,20cyclictest1995184-21apt-get10:50:130
1769677993110,14cyclictest1779767-21turbostat07:20:000
1769677993110,14cyclictest1779767-21turbostat07:20:000
176967799301,27cyclictest2015153-21munin-run11:10:010
176967799301,20cyclictest1964783-21apt-get10:20:140
1769686992926,2cyclictest136-1kworker/3:1H+kblockd07:19:333
1769686992926,2cyclictest136-1kworker/3:1H+kblockd07:19:323
176968099285,3cyclictest1933237-21/usr/sbin/munin09:45:201
1769686992717,2cyclictest1846595-21awk08:25:013
1769682992723,2cyclictest1779690-21fwupd07:19:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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