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2025-07-19 - 06:24
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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 rackeslot4.osadl.org (updated Sat Jul 19, 2025 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3516236994237,3cyclictest3849258-21fwupd23:55:130
3516244992619,2cyclictest191rcu_preempt22:25:193
351624199251,21cyclictest3683630-21apt-get21:45:142
3516238992521,2cyclictest3593481-21apt-get20:25:141
3516238992519,4cyclictest3889917-21grep00:25:201
351623899251,21cyclictest3588380-21apt-get20:20:121
351623899250,2cyclictest191rcu_preempt23:18:191
351623899250,2cyclictest191rcu_preempt23:18:181
351623699252,21cyclictest3677235-21apt-get21:40:110
3516236992520,3cyclictest0-21swapper/022:40:270
3516236992519,4cyclictest3573149-21apt-get20:05:140
351623699251,22cyclictest683-21runrttasks23:38:390
351623699251,22cyclictest3526596-21apt-get19:20:160
3516244992420,2cyclictest3562547-21apt-get19:55:113
351624499240,23cyclictest3777967-21ssh22:57:103
351624199241,2cyclictest3747647-21apt-get22:35:152
351624199241,21cyclictest3855654-21apt-get00:00:132
351624199241,21cyclictest3785877-21/usr/sbin/munin23:05:162
351624199241,21cyclictest3572871-21awk20:04:592
3516238992420,2cyclictest3708566-21gpgv22:05:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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