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2025-11-28 - 11:04
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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 20 highest latencies:
System rack2slot7.osadl.org (updated Fri Nov 28, 2025 00:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
371307099525,44cyclictest3923938-21/usr/sbin/munin00:23:100
371307099512,6cyclictest3753641-21diskmemload22:38:070
371307199422,7cyclictest3862584-21ntpq23:13:081
371307099410,28cyclictest0-21swapper/023:54:480
371307199392,10cyclictest3788577-21ntpq21:53:111
3713070993934,4cyclictest0-21swapper/023:08:100
3713070993724,3cyclictest0-21swapper/000:13:000
371307099362,31cyclictest0-21swapper/000:06:080
3713070993534,1cyclictest0-21swapper/020:08:090
371307099351,23cyclictest3936078-21grep00:38:030
371307199347,22cyclictest3938377-21apt-get00:41:071
371307199332,13cyclictest3830664-21ntpq22:38:071
371307199331,8cyclictest3881007-21sed23:33:071
371307199324,20cyclictest3743425-21sendmail-msp20:51:071
371307199323,11cyclictest3800978-21ssh22:06:051
371307199322,14cyclictest3906103-21packagekitd00:01:031
371307199322,14cyclictest3906103-21packagekitd00:01:031
3713071993211,20cyclictest3742295-21fschecks_count20:43:021
371307099323,11cyclictest0-21swapper/023:13:080
3713070993226,3cyclictest0-21swapper/020:28:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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