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2026-01-12 - 06:29
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 Mon Jan 12, 2026 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
21709939910695,9cyclictest2264821-40mandb00:00:011
21709939910093,6cyclictest2265822-21kworker/u8:0+events_unbound00:05:011
2170991999885,10cyclictest2264821-40mandb00:00:010
2170991999791,4cyclictest2251859-21kworker/u8:0+events_unbound23:45:000
2170991998979,7cyclictest2206726-21latency_hist21:00:010
2170991998882,4cyclictest2188957-21kworker/u8:0+flush-179:020:05:260
2170991998780,4cyclictest2154674-21kworker/u8:0+flush-179:019:20:000
2170991998675,5cyclictest2188957-21kworker/u8:0+events_unbound20:15:230
2170993998479,4cyclictest2154674-21kworker/u8:0+flush-179:019:20:001
2170991998476,4cyclictest2174102-21kworker/u8:1+flush-179:019:30:010
2170991998373,8cyclictest2221318-21latency_hist21:45:010
2170991998372,9cyclictest2236128-21/usr/sbin/munin22:30:250
2170993998276,4cyclictest2158258-21kworker/u8:3+events_unbound19:15:001
2170993998074,5cyclictest2197763-21kworker/u8:0+flush-179:020:35:011
2170991998071,6cyclictest2239746-21kworker/u8:2+flush-179:023:20:200
2170991997973,5cyclictest2277002-21kworker/u8:2+events_unbound00:35:240
2170993997872,4cyclictest2239746-21kworker/u8:2+events_unbound22:55:001
2170991997874,3cyclictest2213903-21kworker/u8:1+flush-179:022:00:270
2170991997870,6cyclictest2213903-21kworker/u8:1+flush-179:022:25:000
2170991997868,8cyclictest2179136-21/usr/sbin/munin19:35:240
2170993997771,5cyclictest2263227-21kworker/u8:2+events_unbound00:15:231
2170993997771,4cyclictest2213903-21kworker/u8:1+flush-179:021:40:201
2170991997771,5cyclictest2213903-21kworker/u8:1+flush-179:023:15:010
2170993997668,6cyclictest2224724-21kworker/u8:3+flush-179:022:00:011
2170993997570,4cyclictest2174176-21kworker/u8:2+events_unbound19:20:241
2170993997569,4cyclictest2213903-21kworker/u8:1+flush-179:021:50:191
2170991997570,4cyclictest2263227-21kworker/u8:2+events_unbound00:20:010
2170993997467,6cyclictest2193978-21kworker/u8:1+events_unbound20:45:011
2170993997465,7cyclictest2214952-21latency_hist21:25:011
2170991997468,4cyclictest2192127-21kworker/u8:3+events_unbound20:20:210
2170993997367,4cyclictest2213903-21kworker/u8:1+events_unbound21:25:241
2170993997366,5cyclictest2213903-21kworker/u8:1+events_unbound22:40:231
2170991997368,4cyclictest2239746-21kworker/u8:2+flush-179:023:00:250
2170991997366,4cyclictest2234092-21kworker/u8:3+events_unbound22:35:240
2170993997266,4cyclictest2261844-21kworker/u8:1+flush-179:023:55:001
2170991997268,2cyclictest2263227-21kworker/u8:2+events_unbound00:00:090
2170991997265,5cyclictest2208364-21kworker/u8:2+events_unbound21:10:230
2170991997264,6cyclictest2214996-21kworker/u8:3+flush-179:021:30:210
2170991997264,6cyclictest2214996-21kworker/u8:3+flush-179:021:30:200
2170991997264,6cyclictest2213903-21kworker/u8:1+events_unbound21:50:170
2170993997166,4cyclictest2213903-21kworker/u8:1+events_unbound22:55:181
2170993997165,5cyclictest2188957-21kworker/u8:0+flush-179:020:20:001
2170993997165,4cyclictest2195644-21kworker/u8:2+flush-179:020:35:151
2170991997166,4cyclictest2274372-21kworker/u8:0+flush-179:000:30:240
2170991997163,5cyclictest2242254-21latency_hist22:50:010
2170993997061,6cyclictest2205112-21kworker/u8:0+flush-179:021:15:151
2170991997063,5cyclictest2174102-21kworker/u8:1+events_unbound19:30:190
2170993996963,5cyclictest2213903-21kworker/u8:1+events_unbound22:35:271
2170993996962,5cyclictest2213903-21kworker/u8:1+events_unbound21:45:131
2170993996863,4cyclictest2158258-21kworker/u8:3+events_unbound19:55:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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