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2025-12-06 - 01:35
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 Fri Dec 05, 2025 12:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
453876999685,8cyclictest538482-21latency_hist12:40:000
453878999488,5cyclictest509314-21kworker/u8:2+events_unbound11:20:011
453878999388,4cyclictest468731-21kworker/u8:2+events_unbound09:05:001
453878999387,4cyclictest515938-21kworker/u8:2+flush-179:012:00:011
453878999287,2cyclictest458145-21kworker/u8:1+events_unbound07:40:221
453876998776,8cyclictest455378-21latency_hist07:15:010
453876998775,9cyclictest515961-21latency_hist11:30:020
453878998577,6cyclictest501421-21kworker/u8:2+events_unbound10:50:241
453878998277,4cyclictest500337-21kworker/u8:1+events_unbound10:40:221
453878998277,4cyclictest500337-21kworker/u8:1+events_unbound10:40:221
453878998277,4cyclictest495056-21kworker/u8:3+flush-179:010:35:241
453878998276,5cyclictest535346-21kworker/u8:2+events_unbound12:35:201
453876998275,5cyclictest469982-21kworker/u8:0+flush-179:009:00:010
453878997771,4cyclictest480741-21kworker/u8:0+flush-179:010:10:011
453878997767,8cyclictest462125-21latency_hist08:05:011
4670791760,37ptp4l441ktimers/307:09:253
453878997670,4cyclictest528983-21kworker/u8:1+flush-179:012:15:201
453878997663,12cyclictest466350-21kworker/u8:0+flush-179:008:45:001
453878997570,4cyclictest468731-21kworker/u8:2+flush-179:008:55:211
453878997469,4cyclictest453337-21kworker/u8:2+events_unbound07:10:011
453878997469,3cyclictest470661-21kworker/u8:3+events_unbound09:10:001
453878997468,5cyclictest470661-21kworker/u8:3+flush-179:009:35:001
453878997464,8cyclictest472768-21kworker/u8:1+flush-179:009:20:191
453878997368,4cyclictest480741-21kworker/u8:0+events_unbound10:19:591
453878997368,4cyclictest468731-21kworker/u8:2+events_unbound09:40:221
453878997366,5cyclictest504792-21/usr/sbin/munin10:55:331
453878997266,5cyclictest480741-21kworker/u8:0+events_unbound10:25:251
453878997264,6cyclictest464521-21kworker/u8:3+flush-179:008:35:011
453876997262,7cyclictest474323-21latency_hist09:20:010
453878997163,5cyclictest480741-21kworker/u8:0+events_unbound10:05:001
453878997064,4cyclictest480741-21kworker/u8:0+events_unbound10:20:221
453878996965,3cyclictest528983-21kworker/u8:1+events_unbound12:25:251
453878996955,7cyclictest3970180-21kworker/u8:0+events_unbound07:10:171
453878996756,8cyclictest536898-21latency_hist12:35:021
453878996756,8cyclictest536898-21latency_hist12:35:011
453878996661,3cyclictest506126-21kworker/u8:0+flush-179:011:00:251
453876996660,4cyclictest528983-21kworker/u8:1+flush-179:012:30:260
453876996660,4cyclictest528983-21kworker/u8:1+flush-179:012:30:250
453878996559,4cyclictest521480-21kworker/u8:0+flush-179:011:50:241
453878996462,1cyclictest0-21swapper/108:23:591
453878996455,6cyclictest521480-21kworker/u8:0+events_unbound12:20:151
453878996359,3cyclictest488692-21kworker/u8:2+flush-179:010:15:011
453878996356,5cyclictest515938-21kworker/u8:2+flush-179:011:45:251
453878996356,5cyclictest468731-21kworker/u8:2+flush-179:009:10:211
453878996350,4cyclictest500337-21kworker/u8:1+flush-179:011:20:241
453876996353,7cyclictest506126-21kworker/u8:0+flush-179:011:05:230
453878996256,4cyclictest470661-21kworker/u8:3+events_unbound09:25:261
453876996251,8cyclictest499794-21latency_hist10:40:020
453878996149,9cyclictest479354-21apt-get09:35:101
453878996054,4cyclictest515938-21kworker/u8:2+flush-179:011:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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