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2026-09-10 - 02:42
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50 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 rack4slot2.osadl.org (updated Thu Sep 10, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
74502070,0irq/46-4a10000026571-21/usr/sbin/munin19:05:450
273139910484,0cyclictest27878-21fw_forwarded_lo19:10:340
27313999980,0cyclictest3982-21modprobe19:35:020
27313999880,0cyclictest23286-21diskstats23:40:250
27313999777,0cyclictest3780-21sshd22:43:010
27313999677,0cyclictest30347-21meminfo20:50:390
27313999677,0cyclictest1222-21irqstats19:25:380
27313999675,0cyclictest11545-21memory19:55:450
27313999577,0cyclictest9930-21ntp_states19:50:500
27313999477,0cyclictest4425-21df_inode21:10:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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