You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-11-19 - 01:24
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackbslot1.osadl.org (updated Tue Nov 18, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30252592207163,34sleep30-21swapper/307:06:293
30252782201170,23sleep20-21swapper/207:06:452
30254172195171,14sleep10-21swapper/107:08:241
30255052188163,15sleep00-21swapper/007:09:310
3025719996966,2cyclictest3202180-21kworker/u8:0+events_unbound10:15:192
3025713996764,2cyclictest3340975-21kworker/u8:2+flush-179:012:15:360
3025713996763,2cyclictest3125627-21ChromeDriver00:55:190
3025719996256,4cyclictest3063146-21chrome07:45:012
3025719996051,3cyclictest3103583-21kworker/u8:5+events_unbound10:45:102
302571999603,56cyclictest3222658-21kworker/u8:4+efi_rts_wq10:39:172
302571399609,51cyclictest3222658-21kworker/u8:4+efi_rts_wq10:39:170
3025718995952,5cyclictest3320896-21latency_hist11:55:001
3025719995855,2cyclictest3222658-21kworker/u8:4+flush-179:010:55:132
3025719995854,3cyclictest3032190-21kworker/u8:4+flush-179:007:25:112
3025719995833,24cyclictest3025575-21munin-update07:10:052
3025719995833,23cyclictest3192205-21munin-update09:50:062
3025720995751,5cyclictest247560-21ThreadPoolForeg12:00:353
3025719995751,5cyclictest247560-21ThreadPoolForeg09:10:002
3025713995753,3cyclictest3202180-21kworker/u8:0+events_unbound10:15:140
3025719995652,3cyclictest3340975-21kworker/u8:2+events_unbound12:20:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional