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2025-12-17 - 02:25
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #b, slot #1

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
Characteristics of the 50 highest latencies:
System rackbslot1.osadl.org (updated Tue Dec 16, 2025 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
25952512214184,22sleep00-21swapper/007:07:190
25953352209180,19sleep30-21swapper/307:08:273
25953952205181,14sleep10-21swapper/107:09:141
25954322200177,14sleep20-21swapper/207:09:422
2595681991002,96cyclictest2632651-21chrome07:45:022
2595685996965,3cyclictest2839462-21kworker/u8:1+flush-179:011:10:143
2595685996961,6cyclictest247516-21Chrome_ChildIOT08:00:283
2595675996763,3cyclictest2616787-21kworker/u8:0+events_unbound09:35:280
2595675996763,3cyclictest2616787-21kworker/u8:0+events_unbound09:35:280
259568199666,18cyclictest1253-21openvpn10:45:022
2595685996358,3cyclictest2616787-21kworker/u8:0+flush-179:009:05:133
2595681996325,37cyclictest2864958-21kworker/u8:5+flush-179:011:45:202
2595685996258,3cyclictest2715078-21kworker/u8:2+flush-179:010:20:123
2595685996258,3cyclictest2715078-21kworker/u8:2+events_unbound09:13:383
2595679996146,11cyclictest2539516-21kworker/u8:5+flush-179:007:25:061
2595675996045,14cyclictest2595192-21kworker/u8:2+flush-179:007:45:330
2595685995955,3cyclictest2777740-21kworker/u8:3+flush-179:010:10:133
2595681995954,4cyclictest2855082-21kworker/u8:2+events_unbound12:09:592
2595681995954,3cyclictest2616787-21kworker/u8:0+events_unbound08:40:012
2595675995955,3cyclictest2616787-21kworker/u8:0+events_unbound08:45:000
2595685995754,2cyclictest2802934-21kworker/u8:4+events_unbound11:15:123
2595675995753,3cyclictest2777740-21kworker/u8:3+flush-179:011:55:190
2595675995652,3cyclictest2637417-21kworker/u8:3+flush-179:008:00:000
2595685995552,2cyclictest2864958-21kworker/u8:5+events_unbound11:35:103
2595685995551,3cyclictest2777740-21kworker/u8:3+flush-179:012:30:343
2595675995551,3cyclictest2855082-21kworker/u8:2+flush-179:011:45:000
2595675995551,3cyclictest2668323-21kworker/u8:1+flush-179:010:10:330
2595685995450,3cyclictest3125725-21ThreadPoolForeg07:45:013
2595681995448,5cyclictest247561-21ThreadPoolForeg11:10:182
2595681995446,3cyclictest2616787-21kworker/u8:0+events_unbound08:05:132
2595675995448,4cyclictest2736936-21/usr/share/muni09:25:060
2595685995348,4cyclictest2820959-21ntpq10:45:173
2595681995338,14cyclictest2637417-21kworker/u8:3+flush-179:008:00:212
2595679995346,6cyclictest2715078-21kworker/u8:2+flush-179:010:15:111
2595675995350,2cyclictest247557-21chrome10:59:220
259567599533,47cyclictest2819368-21chrome10:45:010
2595685995249,2cyclictest2891432-21kworker/u8:0+flush-179:012:10:183
2595685995249,2cyclictest2891432-21kworker/u8:0+flush-179:012:10:183
2595685995248,3cyclictest2637417-21kworker/u8:3+flush-179:008:10:333
2595681995248,3cyclictest2668323-21kworker/u8:1+events_unbound08:30:082
2595681995245,6cyclictest247516-21Chrome_ChildIOT09:00:142
2595675995248,3cyclictest2802934-21kworker/u8:4+flush-179:011:15:120
2595675995247,4cyclictest3125687-21ThreadPoolForeg09:15:160
2595675995247,4cyclictest2813226-21munin-limits10:35:350
2595685995145,3cyclictest2802934-21kworker/u8:4+flush-179:010:35:013
2595681995145,2cyclictest2637416-21kworker/u8:1+events_unbound07:50:132
2595681995142,2cyclictest2802934-21kworker/u8:4+events_unbound10:30:232
2595679995146,4cyclictest2916729-31munin-html12:15:341
2595679995137,5cyclictest2793695-21/usr/share/muni10:20:131
2595675995147,3cyclictest2668323-21kworker/u8:1+flush-179:010:25:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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