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2026-09-14 - 01:29
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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 Sun Sep 13, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
360410599152138,11cyclictest1213033-21systemd-journal08:35:001
360410599147137,7cyclictest3695763-21latency_hist11:55:001
360410599138127,8cyclictest3697351-21latency_hist12:00:011
360410599134124,7cyclictest3636111-21latency_hist08:50:011
360410399133122,8cyclictest3668713-21latency_hist10:30:010
360410599127115,9cyclictest3627900-21latency_hist08:25:011
360410599126120,4cyclictest3637751-21kworker/u8:2+events_unbound09:25:251
360410599125117,6cyclictest3704662-21kworker/u8:2+events_unbound12:20:251
360410399125114,8cyclictest3694179-21latency_hist11:50:000
360410599124114,8cyclictest3663674-21latency_hist10:15:001
360410599123112,8cyclictest510-21rs:main1
360410599117107,8cyclictest3657352-21kworker/u8:3+events_unbound10:35:261
360410599116107,6cyclictest3637751-21kworker/u8:2+events_unbound09:40:191
360410599115108,5cyclictest3611987-21kworker/u8:2+flush-179:007:50:251
360410599115104,8cyclictest3652535-21latency_hist09:40:011
360410399115103,9cyclictest3629520-21kworker/u8:3+flush-179:008:45:210
360410599114104,7cyclictest3679859-21latency_hist11:05:001
360410399114108,5cyclictest3637662-21kworker/u8:1+flush-179:008:55:000
360410599113108,4cyclictest3644308-21kworker/u8:1+events_unbound09:45:261
360410599113106,5cyclictest3707389-21kworker/u8:1+flush-179:012:35:251
360410599113104,6cyclictest3610349-21kworker/u8:3+flush-179:007:35:211
360410599113104,6cyclictest3610349-21kworker/u8:3+flush-179:007:35:211
360410599111105,5cyclictest3684606-21kworker/u8:0+events_unbound11:40:001
360410599111102,6cyclictest3637704-21apt-get08:55:001
360410599111101,7cyclictest3623103-21kworker/u8:2+events_unbound08:10:171
360410599110106,3cyclictest3665501-21kworker/u8:1+flush-179:010:25:251
360410399110101,5cyclictest3675336-21kworker/u8:1+events_unbound11:00:140
36041059910999,7cyclictest3610349-21kworker/u8:3+events_unbound07:40:151
360410599109101,6cyclictest3694160-21kworker/u8:2+events_unbound12:00:211
360410599108102,4cyclictest3657352-21kworker/u8:3+flush-179:010:05:241
360410599108102,4cyclictest3623103-21kworker/u8:2+flush-179:008:15:251
36041059910799,7cyclictest3684606-21kworker/u8:0+flush-179:012:30:001
36041059910799,5cyclictest3628136-21kworker/u8:1+events_unbound08:25:171
36041059910799,5cyclictest3628136-21kworker/u8:1+events_unbound08:25:161
360410599107100,5cyclictest3676699-21kworker/u8:3+flush-179:011:05:231
36041039910794,10cyclictest3639817-21apt-get09:00:120
36041059910698,6cyclictest3702115-21kworker/u8:1+events_unbound12:15:261
36041059910698,6cyclictest3646168-21kworker/u8:0+flush-179:009:20:231
36041059910692,11cyclictest3618593-21apt-get07:55:101
360410599106101,4cyclictest3631610-21kworker/u8:2+events_unbound08:40:251
36041039910594,8cyclictest3601022-21kworker/u8:3+events_unbound07:15:000
36041039910592,9cyclictest1213033-21systemd-journal11:35:170
36041039910499,4cyclictest3644308-21kworker/u8:1+flush-179:009:25:000
36041059910396,5cyclictest3676699-21kworker/u8:3+events_unbound10:55:221
36041059910392,10cyclictest3628136-21kworker/u8:1+events_unbound08:35:251
36041039910396,5cyclictest3675336-21kworker/u8:1+flush-179:011:25:140
36041059910292,7cyclictest3642737-21latency_hist09:10:011
36041059910292,4cyclictest3657352-21kworker/u8:3+events_unbound10:30:231
36041039910290,8cyclictest3644308-21kworker/u8:1+flush-179:009:50:260
36041059910196,4cyclictest3618573-21kworker/u8:0+flush-179:008:05:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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