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2026-08-24 - 13:48
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 Mon Aug 24, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
234951699149124,11cyclictest2381521-21kworker/u8:1+events_unbound20:55:150
234951699143135,5cyclictest2451978-21kworker/u8:1+events_unbound00:40:000
234951799137126,8cyclictest2402811-21latency_hist21:55:001
234951699137124,9cyclictest2384694-21kworker/u8:2+events_unbound21:05:140
234951699136130,4cyclictest2364003-21kworker/u8:3+events_unbound19:55:000
234951699135123,8cyclictest2392016-21kworker/u8:1+events_unbound21:35:000
234951699134126,5cyclictest2359618-21kworker/u8:1+flush-179:019:45:150
234951699132121,9cyclictest2420580-21kworker/u8:2+flush-179:022:50:000
234951699131123,5cyclictest2355023-21kworker/u8:3+events_unbound19:35:150
234951799129123,4cyclictest2434931-21kworker/u8:3+events_unbound23:40:181
234951799128122,4cyclictest2344935-21kworker/u8:2+events_unbound19:20:141
234951799128117,9cyclictest1213033-21systemd-journal22:40:011
234951699128122,3cyclictest2399425-21kworker/u8:3+flush-179:022:15:210
234951699128115,9cyclictest2367237-21kworker/u8:2+events_unbound20:05:150
234951799127123,3cyclictest2412622-21kworker/u8:3+flush-179:022:25:191
234951799127116,8cyclictest2384738-21latency_hist21:00:011
234951799125118,5cyclictest2354202-21kworker/u8:0+events_unbound20:00:141
234951799125110,12cyclictest1213033-21systemd-journal23:40:001
234951699125117,4cyclictest2434931-21kworker/u8:3+flush-179:023:35:160
234951699124116,5cyclictest2392016-21kworker/u8:1+events_unbound21:35:240
234951699124115,6cyclictest2438868-21kworker/u8:0+events_unbound23:45:140
234951699123116,5cyclictest2386308-21kworker/u8:0+events_unbound21:45:250
234951699123106,5cyclictest2414216-21kworker/u8:1+events_unbound22:35:150
234951799122113,4cyclictest2451978-21kworker/u8:1+events_unbound00:35:251
234951699122116,3cyclictest2434931-21kworker/u8:3+events_unbound00:20:140
234951699122110,9cyclictest2367237-21kworker/u8:2+events_unbound20:10:130
23495169912199,12cyclictest2414216-21kworker/u8:1+flush-179:022:30:190
234951799120111,6cyclictest510-21rs:main1
234951799119114,4cyclictest2434931-21kworker/u8:3+flush-179:023:50:261
234951699117109,5cyclictest2438868-21kworker/u8:0+flush-179:000:05:200
234951699117106,9cyclictest2424041-21apt-get23:00:120
2349516991170,115cyclictest1-21systemd22:10:010
234951799116106,7cyclictest2359259-21latency_hist19:40:021
23495169911697,8cyclictest2430197-21kworker/u8:2+events_unbound23:30:160
234951699116104,9cyclictest2392016-21kworker/u8:1+flush-179:021:40:150
234951699116103,4cyclictest2378406-21kworker/u8:3+flush-179:020:45:200
234951799115111,3cyclictest2354202-21kworker/u8:0+flush-179:019:55:271
234951799115110,4cyclictest2434931-21kworker/u8:3+events_unbound23:45:231
234951799115110,4cyclictest2414216-21kworker/u8:1+events_unbound22:50:221
234951699115107,7cyclictest2352593-21kworker/u8:1+flush-179:019:20:000
234951699115102,4cyclictest2412622-21kworker/u8:3+events_unbound22:25:240
234951799114108,4cyclictest2352593-21kworker/u8:1+events_unbound19:25:141
234951699114105,6cyclictest2386308-21kworker/u8:0+flush-179:021:15:210
234951799113107,4cyclictest2414216-21kworker/u8:1+events_unbound23:15:231
234951799113102,9cyclictest510-21rs:main1
23495169911399,10cyclictest2388052-21kworker/u8:3+events_unbound21:10:140
23495169911396,6cyclictest2434931-21kworker/u8:3+events_unbound23:55:150
234951699113106,4cyclictest2355023-21kworker/u8:3+events_unbound19:30:240
234951699113104,6cyclictest2404417-21latency_hist22:00:010
234951699113103,7cyclictest2378403-21kworker/u8:1+events_unbound20:40:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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