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2025-09-18 - 17:43
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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 Thu Sep 18, 2025 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
322957994717,6cyclictest0-21swapper/010:37:280
32295799465,38cyclictest0-21swapper/009:45:030
32295799422,10cyclictest371372-21sendmail-msp09:27:340
322957993916,2cyclictest535000-21ntpq12:12:310
322958993727,6cyclictest764-21rs:main1
322957993616,4cyclictest11050irq/107-eth%d11:17:320
322958993520,11cyclictest419166-21/usr/sbin/munin10:17:331
32295799354,21cyclictest554767-21/usr/sbin/munin12:32:310
32295799341,18cyclictest0-21swapper/010:55:040
32295999338,10cyclictest171rcu_preempt10:15:012
322957993228,3cyclictest446317-21apt-get10:45:040
32295899319,17cyclictest1006-21mta-sts-daemon08:00:041
32295999306,17cyclictest111788-21systemd-journal11:46:592
32295899292,5cyclictest171rcu_preempt10:15:011
32295799292,18cyclictest407111-21munin-run10:05:010
32295799291,25cyclictest524462-21fschecks_count12:02:270
322958992812,4cyclictest11050irq/107-eth%d09:07:351
322957992815,1cyclictest0-21swapper/010:34:480
32295999266,17cyclictest0-21swapper/209:07:352
32295899269,7cyclictest11050irq/107-eth%d10:30:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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