You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-17 - 21:15
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 Wed Sep 17, 2025 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31600222218188,20sleep20-21swapper/207:06:362
31600932208184,14sleep30-21swapper/307:07:333
31602102207183,14sleep00-21swapper/007:08:550
31601482201176,14sleep10-21swapper/107:08:101
3160480996154,5cyclictest3440601-21/usr/share/muni11:40:092
316047899615,55cyclictest3306273-21kworker/u8:0+efi_rts_wq09:54:580
3160479995653,2cyclictest3251747-21kworker/u8:1+flush-179:009:05:091
3160478995651,4cyclictest3456368-21/usr/share/muni11:55:090
3160482995549,4cyclictest3404857-21/usr/share/muni11:05:093
3160479995552,2cyclictest3306273-21kworker/u8:0+events_unbound10:05:091
3160482995450,3cyclictest3475993-31munin-html12:10:343
316048299534,47cyclictest3197581-13Chrome_IOThread07:45:023
316048299534,47cyclictest3197581-13Chrome_IOThread07:45:023
3160480995249,2cyclictest3332943-21kworker/u8:4+events_unbound11:05:252
3160479995247,4cyclictest247560-21ThreadPoolForeg12:25:091
3160479995148,2cyclictest3332943-21kworker/u8:4+flush-179:010:45:241
3160479995147,3cyclictest3306273-21kworker/u8:0+events_unbound10:00:001
3160479995045,4cyclictest3394646-21/usr/share/muni10:55:011
3160478995047,2cyclictest2188114-1kworker/0:0H+kblockd11:11:010
3160478995046,3cyclictest3322210-21CacheThread_Blo09:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional