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2026-07-26 - 09:19
OSADL QA Farm

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 Sun Jul 26, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
334061799137127,8cyclictest1213033-21systemd-journal22:30:000
334062299136110,23cyclictest3406730-21latency_hist22:35:011
334062299133117,13cyclictest3444195-21latency_hist00:30:011
334062299131121,7cyclictest3390823-21latency_hist21:45:011
334061799131111,6cyclictest3413345-21kworker/u8:0+events_unbound22:55:150
334061799128113,12cyclictest1213033-21systemd-journal19:55:010
334061799125119,4cyclictest3434588-21kworker/u8:0+events_unbound00:05:280
334061799125118,6cyclictest3338958-21kworker/u8:3+events_unbound19:10:030
334061799124119,4cyclictest3444452-21kworker/u8:2+flush-179:000:35:250
334061799123109,11cyclictest1213033-21systemd-journal22:55:000
334061799119114,4cyclictest3376279-21kworker/u8:3+events_unbound21:05:240
334061799119113,4cyclictest3428980-21kworker/u8:3+events_unbound00:00:250
334061799118113,4cyclictest3360555-21kworker/u8:0+events_unbound20:15:000
334061799117110,5cyclictest3392397-21kworker/u8:2+flush-179:021:50:260
334061799117110,5cyclictest3335711-21kworker/u8:1+flush-179:019:15:230
334061799116109,5cyclictest3361948-21kworker/u8:3+events_unbound20:30:240
334061799115109,4cyclictest3410219-21kworker/u8:1+flush-179:023:10:240
334061799115109,4cyclictest3410219-21kworker/u8:1+flush-179:023:10:230
334062299114106,6cyclictest1213033-21systemd-journal22:10:001
334061799114108,4cyclictest3431107-21kworker/u8:1+flush-179:000:30:270
334062299113102,9cyclictest705801-21cups-browsed00:00:011
334061799113108,4cyclictest3392402-21kworker/u8:3+flush-179:022:00:240
334061799113108,4cyclictest3392402-21kworker/u8:3+flush-179:022:00:230
33406179911298,10cyclictest510-21rs:main0
334062299110101,5cyclictest3360555-21kworker/u8:0+flush-179:020:35:181
33406179911098,8cyclictest3408599-21latency_hist22:40:010
334061799110103,5cyclictest3385445-21kworker/u8:2+flush-179:021:30:210
334061799110102,4cyclictest3324555-21kworker/u8:2+events_unbound19:20:240
33406179910899,3cyclictest3416018-21kworker/u8:2+events_unbound23:05:260
33406179910898,7cyclictest3358734-21latency_hist20:05:000
33406229910798,6cyclictest3434588-21kworker/u8:0+flush-179:000:05:001
33406179910796,8cyclictest3411768-21latency_hist22:50:010
334061799107102,4cyclictest3360555-21kworker/u8:0+events_unbound20:15:240
33406179910698,5cyclictest3431107-21kworker/u8:1+events_unbound23:55:220
334061799106101,4cyclictest3349840-21kworker/u8:1+events_unbound20:05:260
334061799106100,4cyclictest3380441-21kworker/u8:0+events_unbound21:15:190
33406229910594,8cyclictest3374635-21latency_hist20:55:001
33406229910486,15cyclictest3442374-21http00:25:011
33406229910392,8cyclictest3400614-21apt-get22:15:131
33406229910296,4cyclictest3324555-21kworker/u8:2+flush-179:019:50:261
33406229910288,11cyclictest1213033-21systemd-journal21:30:251
33406179910293,7cyclictest3426541-21kworker/u8:2+events_unbound23:40:020
33406179910291,9cyclictest3368526-21apt-get20:35:130
33406229910193,5cyclictest3324555-21kworker/u8:2+flush-179:019:45:241
3340617999991,5cyclictest3366676-21kworker/u8:1+events_unbound20:40:220
3340617999989,4cyclictest3376215-21kworker/u8:2+events_unbound21:10:170
3340622999889,6cyclictest3352369-21latency_hist19:45:011
3340617999892,5cyclictest3347634-21wc19:30:010
3340622999793,3cyclictest3366676-21kworker/u8:1+flush-179:020:40:261
3340622999786,8cyclictest3392397-21kworker/u8:2+flush-179:022:45:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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