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2026-09-20 - 14:14
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 Sep 20, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
28271599151139,9cyclictest308068-21latency_hist20:30:001
282712991510,147cyclictest1-21systemd00:00:010
28271299146137,6cyclictest331002-21gpgv21:40:000
28271299145133,9cyclictest371517-21true23:45:000
28271299137129,6cyclictest381071-21kworker/u8:0+events_unbound00:20:010
28271599135123,10cyclictest1849176-21cups-browsed00:00:011
28271599131116,12cyclictest374143-21kworker/u8:1+events_unbound23:50:251
28271299131120,8cyclictest352067-21kworker/u8:1+flush-179:022:50:010
28271299131120,8cyclictest295371-21kworker/u8:2+events_unbound19:55:000
28271299131117,11cyclictest1213033-21systemd-journal23:50:000
28271299130123,5cyclictest287622-21kworker/u8:1+events_unbound19:40:250
28271599129120,6cyclictest329247-21kworker/u8:0+flush-179:022:55:241
28271299129121,5cyclictest381071-21kworker/u8:0+flush-179:000:40:010
28271299125118,6cyclictest376308-21kworker/u8:3+events_unbound00:10:000
28271599124115,7cyclictest311570-21kworker/u8:0+flush-179:020:50:161
28271599123116,4cyclictest332755-21kworker/u8:3+events_unbound21:50:201
28271299123118,4cyclictest356901-21kworker/u8:2+flush-179:000:15:000
28271299123114,6cyclictest281058-21kworker/u8:0+events_unbound19:10:240
28271599122116,4cyclictest314876-21kworker/u8:2+events_unbound21:00:181
28271599121110,8cyclictest358445-21latency_hist23:05:011
28271299121115,4cyclictest356901-21kworker/u8:2+flush-179:023:50:190
28271299121107,4cyclictest295371-21kworker/u8:2+flush-179:019:55:280
28271599120112,6cyclictest329247-21kworker/u8:0+events_unbound22:50:261
28271599119113,5cyclictest345219-21kworker/u8:2+flush-179:022:25:231
28271599119107,8cyclictest287622-21kworker/u8:1+flush-179:019:40:221
28271599119106,10cyclictest1213033-21systemd-journal23:45:001
28271299119114,3cyclictest381071-21kworker/u8:0+flush-179:000:20:210
28271599118110,6cyclictest348861-21kworker/u8:3+flush-179:022:35:251
28271299117112,3cyclictest335880-21kworker/u8:1+events_unbound22:10:190
28271299117111,4cyclictest314876-21kworker/u8:2+flush-179:020:50:230
28271299117104,10cyclictest384542-21apt-get00:25:120
28271299116109,5cyclictest329247-21kworker/u8:0+flush-179:022:50:180
28271299116109,5cyclictest282633-21kworker/u8:3+flush-179:019:35:170
28271599115106,6cyclictest287622-21kworker/u8:1+flush-179:019:30:161
28271599115105,7cyclictest300095-21kworker/u8:2+flush-179:020:15:251
28271599115103,5cyclictest311570-21kworker/u8:0+events_unbound20:40:241
28271299115109,4cyclictest356901-21kworker/u8:2+flush-179:023:20:250
28271299115109,4cyclictest276570-21kworker/u8:2+flush-179:019:15:260
28271299115105,8cyclictest318179-21kworker/u8:3+flush-179:021:25:260
28271599114104,7cyclictest363217-21latency_hist23:20:011
28271599113105,6cyclictest318179-21kworker/u8:3+events_unbound21:10:241
28271599113101,8cyclictest368282-21kworker/u8:1+events_unbound23:35:141
28271299113108,3cyclictest345219-21kworker/u8:2+flush-179:022:20:260
28271299113103,6cyclictest303323-21kworker/u8:1+events_unbound20:30:190
28271599112105,5cyclictest292202-21kworker/u8:0+events_unbound20:00:021
28271599112105,5cyclictest287622-21kworker/u8:1+events_unbound19:30:011
28271299112106,4cyclictest335880-21kworker/u8:1+flush-179:021:55:210
28271299112106,4cyclictest329247-21kworker/u8:0+flush-179:021:45:200
28271599111103,6cyclictest381071-21kworker/u8:0+flush-179:000:35:281
28271599111101,7cyclictest287622-21kworker/u8:1+flush-179:020:00:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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