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2026-06-20 - 14:30
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 Sat Jun 20, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
228534599130121,6cyclictest2367233-21latency_hist23:25:011
228534599130121,6cyclictest2367233-21latency_hist23:25:001
228534499129117,4cyclictest2310987-21kworker/u8:3+events_unbound20:45:010
228534499125119,4cyclictest2320711-21kworker/u8:3+events_unbound21:10:000
228534499124118,5cyclictest2351287-21kworker/u8:3+events_unbound22:35:010
228534499123114,6cyclictest2390619-21kworker/u8:0+events_unbound00:35:240
228534599119108,8cyclictest2309364-21latency_hist20:25:011
228534499118104,5cyclictest2325564-21kworker/u8:2+events_unbound21:35:010
228534499116109,5cyclictest2325564-21kworker/u8:2+flush-179:021:15:010
228534599114101,11cyclictest1213033-21systemd-journal00:03:591
228534499109104,4cyclictest2378421-21kworker/u8:3+events_unbound00:04:020
22853459910593,9cyclictest1213033-21systemd-journal00:35:011
228534599105101,3cyclictest2381663-21kworker/u8:2+events_unbound00:25:241
22853449910395,6cyclictest2373644-21kworker/u8:2+flush-179:023:50:220
22853459910196,4cyclictest2381663-21kworker/u8:2+events_unbound00:20:231
22853449910196,4cyclictest2310987-21kworker/u8:3+events_unbound20:35:200
22853459910096,3cyclictest2265880-21kworker/u8:0+events_unbound19:10:251
22853449910094,4cyclictest2320711-21kworker/u8:3+flush-179:021:20:010
2285344999993,4cyclictest2295018-21kworker/u8:0+events_unbound19:40:240
2285344999986,4cyclictest2336965-21kworker/u8:0+flush-179:022:45:140
2285344999789,6cyclictest2302734-21latency_hist20:05:010
2285344999789,5cyclictest2304303-21kworker/u8:0+events_unbound20:10:020
2285345999691,4cyclictest2310987-21kworker/u8:3+events_unbound20:40:251
2285345999691,4cyclictest2296402-21kworker/u8:2+flush-179:019:50:261
2285344999679,5cyclictest2265880-21kworker/u8:0+events_unbound19:10:140
2285345999590,4cyclictest2360845-21kworker/u8:1+events_unbound23:25:251
2285345999585,8cyclictest2289999-21latency_hist19:25:011
2285344999589,5cyclictest2336965-21kworker/u8:0+flush-179:023:00:310
2285344999589,4cyclictest2293156-21kworker/u8:3+events_unbound19:55:230
2285344999587,6cyclictest2368855-21kworker/u8:0+flush-179:023:35:260
2285344999490,3cyclictest2320711-21kworker/u8:3+flush-179:021:20:210
2285344999488,4cyclictest2325564-21kworker/u8:2+flush-179:021:45:100
2285344999479,5cyclictest2352889-21kworker/u8:1+events_unbound22:40:140
2285344999479,5cyclictest2351287-21kworker/u8:3+events_unbound22:35:130
2285345999388,4cyclictest2356122-21kworker/u8:2+events_unbound22:55:211
2285344999385,5cyclictest2365599-21kworker/u8:2+events_unbound23:30:130
2285344999380,9cyclictest2381606-21latency_hist00:10:010
2285344999380,9cyclictest2381606-21latency_hist00:10:010
2285344999377,6cyclictest2360845-21kworker/u8:1+events_unbound23:25:160
2285345999287,4cyclictest2360845-21kworker/u8:1+events_unbound23:15:221
2285344999283,6cyclictest2356122-21kworker/u8:2+events_unbound23:05:130
2285344999279,7cyclictest2325564-21kworker/u8:2+events_unbound21:40:190
2285344999279,7cyclictest2325564-21kworker/u8:2+events_unbound21:40:190
2285344999186,4cyclictest2317365-21kworker/u8:2+flush-179:020:50:210
2285344999180,9cyclictest2346804-21apt-get22:20:110
2285344999179,10cyclictest1213033-21systemd-journal21:40:000
2285344999178,4cyclictest2301783-21kworker/u8:1+events_unbound20:20:220
2285345999085,4cyclictest2310987-21kworker/u8:3+events_unbound20:45:191
2285345999085,3cyclictest2351287-21kworker/u8:3+flush-179:022:35:201
2285345998883,4cyclictest2304303-21kworker/u8:0+flush-179:020:10:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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