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2026-04-14 - 10:36
Click here to display the system's profile data.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Note that at least one system runs a non-RT kernel (x scale expanded to 2000 µs).
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Characteristics of the 10 highest latencies:
System (updated Sun Jan 04, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17764902217193,14sleep10-21swapper/107:07:481
17765792205181,14sleep20-21swapper/207:08:582
17765502201177,16sleep30-21swapper/307:08:353
17766322196172,14sleep00-21swapper/007:09:360
184931821260,2sleep13125725-21ThreadPoolForeg08:15:401
177687599901,2cyclictest1813877-21snmp_wanswitch.07:45:022
1776866998831,12cyclictest1937771-21snmp_wlanpowerc09:45:020
1776872998224,56cyclictest1937801-21chrome09:45:021
1776879996461,2cyclictest1756106-21kworker/u8:0+flush-179:007:30:113
1776879996460,3cyclictest1968738-21kworker/u8:0+flush-179:011:00:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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