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2026-06-06 - 10:34
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 06, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
208830099150141,6cyclictest2112364-21kworker/u8:3+events_unbound20:40:030
208830499137125,9cyclictest1213033-21systemd-journal00:04:001
208830099126110,6cyclictest2191271-21kworker/u8:0+flush-179:000:40:000
208830099119106,6cyclictest2099631-21kworker/u8:0+events_unbound20:10:000
208830499117112,3cyclictest2175239-21kworker/u8:1+events_unbound00:25:241
208830099116101,5cyclictest2099631-21kworker/u8:0+events_unbound19:45:240
208830099114106,5cyclictest2122476-21kworker/u8:2+events_unbound21:00:240
208830099114104,8cyclictest2099631-21kworker/u8:0+flush-179:020:05:010
208830099113108,4cyclictest2132042-21kworker/u8:1+events_unbound21:40:010
208830099113103,8cyclictest1213033-21systemd-journal00:25:010
208830099107101,5cyclictest2154326-21kworker/u8:3+events_unbound22:40:230
208830099107101,4cyclictest2184851-21kworker/u8:3+events_unbound00:10:000
20883049910599,4cyclictest2132042-21kworker/u8:1+events_unbound21:30:251
20883009910595,7cyclictest2112364-21kworker/u8:3+flush-179:020:50:230
20883009910595,7cyclictest2112364-21kworker/u8:3+flush-179:020:50:220
20883009910498,4cyclictest2116589-21kworker/u8:0+events_unbound21:10:000
20883009910296,4cyclictest2112364-21kworker/u8:3+events_unbound20:35:240
20883049910189,10cyclictest1213033-21systemd-journal23:25:001
20883049910087,9cyclictest1213033-21systemd-journal20:30:011
20883009910094,4cyclictest2116589-21kworker/u8:0+events_unbound20:45:230
20883009910090,7cyclictest2138379-21latency_hist21:45:000
20883009910090,6cyclictest1-21systemd23:25:010
20883009910088,8cyclictest1-21systemd20:30:000
2088304999892,4cyclictest2091646-21kworker/u8:2+flush-179:019:45:151
2088304999890,5cyclictest2093310-21kworker/u8:1+flush-179:019:35:191
2088304999793,2cyclictest271rcuc/121:21:591
2088304999791,5cyclictest2116589-21kworker/u8:0+events_unbound21:10:231
2088300999788,6cyclictest2093310-21kworker/u8:1+flush-179:019:25:140
2088304999586,7cyclictest2112364-21kworker/u8:3+events_unbound20:35:001
2088304999586,7cyclictest2112364-21kworker/u8:3+events_unbound20:34:591
2088304999586,6cyclictest2154270-21kworker/u8:0+events_unbound22:40:261
2088300999590,4cyclictest2188101-21kworker/u8:2+events_unbound00:35:000
2088300999486,6cyclictest2146324-21kworker/u8:2+events_unbound22:25:250
2088304999388,4cyclictest2131988-21kworker/u8:0+flush-179:021:35:221
2088300999386,5cyclictest2091646-21kworker/u8:2+flush-179:019:40:010
2088300999385,5cyclictest2088250-21kworker/u8:3+flush-179:019:15:200
2088304999286,5cyclictest2112364-21kworker/u8:3+flush-179:020:50:211
2088304999286,5cyclictest2112364-21kworker/u8:3+flush-179:020:50:201
2088304999284,6cyclictest2088250-21kworker/u8:3+events_unbound19:15:021
2088300999287,4cyclictest2091646-21kworker/u8:2+flush-179:019:50:230
2088300999285,5cyclictest2162484-21kworker/u8:2+events_unbound23:25:190
2088300999285,4cyclictest2138356-21kworker/u8:2+events_unbound21:50:200
2088300999284,5cyclictest2146306-21kworker/u8:1+flush-179:022:10:200
2088304999184,4cyclictest2112364-21kworker/u8:3+flush-179:020:40:211
2088304999182,6cyclictest2180017-21kworker/u8:2+flush-179:023:55:201
2088300999184,4cyclictest2180017-21kworker/u8:2+flush-179:023:55:150
2088300999181,7cyclictest2154270-21kworker/u8:0+flush-179:022:50:190
2088304999084,4cyclictest2154270-21kworker/u8:0+flush-179:023:30:231
2088304999081,6cyclictest2138356-21kworker/u8:2+flush-179:021:45:161
2088304999078,10cyclictest2157742-21apt-get22:45:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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