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2026-08-06 - 03:15
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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 Wed Aug 05, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
252658099155143,10cyclictest1213033-21systemd-journal12:07:391
252658099155142,6cyclictest2568659-21kworker/u8:1+events_unbound11:39:591
252658099145139,5cyclictest2559667-21kworker/u8:0+events_unbound11:29:091
252658099135125,6cyclictest2537386-21latency_hist09:55:011
252658099134124,8cyclictest1213033-21systemd-journal08:25:001
252658099129119,8cyclictest2588082-21latency_hist12:30:001
252658099123118,4cyclictest2575023-21kworker/u8:1+events_unbound12:16:161
252658099122115,6cyclictest2526123-21kworker/u8:1+events_unbound07:20:011
252657699121111,7cyclictest2580060-21latency_hist12:05:010
252658099118113,4cyclictest2575023-21kworker/u8:1+events_unbound11:58:011
252658099118113,4cyclictest2575023-21kworker/u8:1+events_unbound11:58:001
252658099118111,5cyclictest2526118-21kworker/u8:0+events_unbound07:10:031
252658099117108,6cyclictest2532981-21latency_hist09:00:021
252657699117108,6cyclictest2534251-21latency_hist09:25:010
252657699115107,5cyclictest2553308-21kworker/u8:1+flush-179:010:50:240
252658099114105,5cyclictest2553303-21kworker/u8:0+events_unbound10:45:141
252658099113103,7cyclictest2546987-21kworker/u8:3+flush-179:010:25:141
252658099112106,4cyclictest2550105-21kworker/u8:2+events_unbound10:40:161
252658099112103,6cyclictest2526868-21kworker/u8:3+flush-179:007:25:011
252658099112101,5cyclictest2571777-21kworker/u8:3+events_unbound11:40:131
252658099112100,9cyclictest2550105-21kworker/u8:2+flush-179:010:40:001
25265809910898,7cyclictest2530923-21latency_hist08:20:011
252658099108103,4cyclictest2555439-21kworker/u8:2+events_unbound10:55:251
252657699108100,6cyclictest2527652-21kworker/u8:1+events_unbound08:15:020
25265809910796,9cyclictest2533211-21kworker/u8:1+flush-179:010:00:201
252657699107100,5cyclictest2532189-21latency_hist08:45:010
25265769910698,6cyclictest2527141-21latency_hist07:20:000
25265809910596,6cyclictest2559667-21kworker/u8:0+events_unbound11:20:201
25265809910394,7cyclictest2575023-21kworker/u8:1+events_unbound12:15:001
25265769910395,5cyclictest1213033-21systemd-journal11:28:370
25265809910293,6cyclictest2559667-21kworker/u8:0+events_unbound11:45:231
25265769910288,11cyclictest1213033-21systemd-journal11:57:590
25265769910288,11cyclictest1213033-21systemd-journal11:57:580
25265809910197,3cyclictest2559667-21kworker/u8:0+flush-179:011:15:301
25265809910196,4cyclictest2533465-21kworker/u8:3+flush-179:009:10:011
25265809910190,4cyclictest2555439-21kworker/u8:2+flush-179:011:05:241
25265769910193,6cyclictest2573386-21kworker/u8:2+events_unbound11:55:010
25265769910191,7cyclictest2591283-21latency_hist12:40:020
25265769910190,8cyclictest2532693-21latency_hist08:55:010
25265769910182,16cyclictest2543756-21latency_hist10:15:010
25265769910091,7cyclictest2530072-21latency_hist08:10:000
2526580999985,6cyclictest2573386-21kworker/u8:2+events_unbound11:50:191
2526580999894,3cyclictest2576711-21kworker/u8:3+events_unbound12:30:241
2526576999887,9cyclictest2561534-21apt-get11:10:100
2526580999793,3cyclictest2533211-21kworker/u8:1+flush-179:009:55:261
2526576999791,5cyclictest2550105-21kworker/u8:2+flush-179:010:45:000
2526576999686,8cyclictest2533211-21kworker/u8:1+events_unbound10:25:000
2526580999591,3cyclictest2576711-21kworker/u8:3+events_unbound12:35:261
2526580999590,3cyclictest2527652-21kworker/u8:1+events_unbound07:50:001
2526580999581,11cyclictest510-21rs:main1
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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