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2026-05-05 - 19:02
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OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #e, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Tue May 05, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
338741599114104,8cyclictest3436225-21kworker/u8:0+events_unbound10:00:000
33874159910297,4cyclictest3416642-21kworker/u8:0+events_unbound08:40:000
33874159910293,6cyclictest1213033-21systemd-journal09:55:000
33874159910287,6cyclictest3449813-21kworker/u8:1+events_unbound10:55:010
33874159910088,6cyclictest3395775-21kworker/u8:3+events_unbound08:09:590
3387415999483,9cyclictest3483498-21kworker/u8:3+flush-179:012:40:000
3387415999480,11cyclictest1213033-21systemd-journal11:00:010
3387419999384,7cyclictest3437822-21latency_hist09:50:011
3387419999274,14cyclictest3448157-21kworker/u8:2+flush-179:011:55:011
3387415998882,4cyclictest3408621-21kworker/u8:0+events_unbound08:15:150
3387415998878,4cyclictest3427769-21kworker/u8:3+events_unbound09:35:010
3387415998777,4cyclictest3444077-21kworker/u8:0+events_unbound10:35:010
3387415998676,8cyclictest3410491-21apt-get08:20:110
3387415998579,4cyclictest3465710-21kworker/u8:3+flush-179:011:30:190
3387415998577,6cyclictest3438118-21kworker/u8:3+flush-179:010:05:000
3387419998470,8cyclictest3396035-21/usr/sbin/munin07:35:231
3387415998479,3cyclictest3444077-21kworker/u8:0+events_unbound10:25:240
3387415998375,6cyclictest3424534-21kworker/u8:0+events_unbound09:05:010
3387415998173,6cyclictest3448157-21kworker/u8:2+flush-179:011:05:210
3387415997970,7cyclictest3477095-21latency_hist12:05:010
3387415997872,4cyclictest3448157-21kworker/u8:2+events_unbound11:45:240
3387415997871,5cyclictest3448157-21kworker/u8:2+events_unbound11:20:230
3387415997871,5cyclictest3436225-21kworker/u8:0+events_unbound09:45:180
3387415997770,5cyclictest3465673-21kworker/u8:1+events_unbound11:40:020
3387415997766,8cyclictest3382778-21kworker/u8:1+events_unbound07:10:160
3387415997670,4cyclictest3403821-21kworker/u8:0+events_unbound08:00:130
3387419997568,5cyclictest3438339-21apt-get09:55:121
3387419997551,21cyclictest3395799-21latency_hist07:35:011
3387415997569,5cyclictest3448157-21kworker/u8:2+events_unbound12:05:230
3387419997364,6cyclictest1213033-21systemd-journal11:49:271
3387419997260,9cyclictest3434116-21apt-get09:34:591
3387415997267,3cyclictest3469043-21kworker/u8:0+flush-179:012:15:210
3387415997267,3cyclictest3469043-21kworker/u8:0+flush-179:012:15:210
3387415997265,5cyclictest3395771-21kworker/u8:1+flush-179:007:35:210
3387415997265,4cyclictest3444077-21kworker/u8:0+flush-179:010:35:140
3387415997263,6cyclictest3448157-21kworker/u8:2+events_unbound10:40:210
3387415997262,3cyclictest3395775-21kworker/u8:3+events_unbound07:45:010
3387419997164,5cyclictest3474155-21apt-get11:55:131
3387415997165,4cyclictest3395775-21kworker/u8:3+events_unbound07:45:140
3387419997062,6cyclictest3421364-21latency_hist08:55:011
3387415997063,5cyclictest3388942-21kworker/u8:2+events_unbound07:25:160
3387415997062,5cyclictest3454582-21kworker/u8:0+flush-179:011:25:220
3387415997062,5cyclictest3454582-21kworker/u8:0+flush-179:011:25:220
3387419996962,5cyclictest3485054-21latency_hist12:30:011
3387419996858,8cyclictest3462771-21apt-get11:20:101
3387415996862,4cyclictest3465710-21kworker/u8:3+flush-179:011:55:220
3387415996862,4cyclictest3395775-21kworker/u8:3+events_unbound07:55:230
3387419996758,6cyclictest3395775-21kworker/u8:3+flush-179:007:55:001
3387415996762,4cyclictest3438118-21kworker/u8:3+flush-179:010:15:210
3387415996758,6cyclictest3388886-21kworker/u8:0+events_unbound07:15:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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