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2025-12-01 - 06:51
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 Dec 01, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
4037039910493,8cyclictest477904-21latency_hist23:00:010
403703999685,4cyclictest398571-21kworker/u8:1+events_unbound19:25:230
403707999589,5cyclictest482284-21kworker/u8:1+flush-179:000:04:021
403707999589,5cyclictest482284-21kworker/u8:1+flush-179:000:04:011
403703999487,5cyclictest398571-21kworker/u8:1+events_unbound19:45:220
403707999185,4cyclictest402136-21kworker/u8:0+flush-179:019:20:001
403707998573,8cyclictest445799-21latency_hist21:20:001
403703998277,4cyclictest428276-21kworker/u8:3+flush-179:020:25:250
403703998268,4cyclictest482284-21kworker/u8:1+events_unbound23:40:010
403707998170,4cyclictest428276-21kworker/u8:3+events_unbound20:40:001
403707998070,7cyclictest487690-21/usr/sbin/munin23:30:231
403703998076,3cyclictest421695-21kworker/u8:2+events_unbound20:10:270
403707997969,7cyclictest499427-21/usr/sbin/munin00:10:191
403703997975,3cyclictest436278-21kworker/u8:1+events_unbound21:10:250
403703997972,6cyclictest413483-21kworker/u8:3+flush-179:020:00:010
403703997966,6cyclictest431498-21kworker/u8:0+events_unbound20:35:200
403703997873,4cyclictest471502-21kworker/u8:0+events_unbound23:00:240
403703997766,8cyclictest464892-21latency_hist22:20:010
403707997670,4cyclictest421695-21kworker/u8:2+events_unbound20:20:011
403703997668,6cyclictest482284-21kworker/u8:1+events_unbound23:50:220
403703997668,6cyclictest271-21systemd-journal19:40:000
403707997569,4cyclictest428276-21kworker/u8:3+flush-179:020:35:001
403707997565,7cyclictest463302-21latency_hist22:15:011
403703997570,4cyclictest497133-21kworker/u8:3+events_unbound00:20:240
403703997569,4cyclictest406902-21kworker/u8:3+events_unbound19:20:230
403703997461,5cyclictest431498-21kworker/u8:0+events_unbound20:55:200
403703997369,3cyclictest436278-21kworker/u8:1+events_unbound21:00:240
403707997265,4cyclictest471502-21kworker/u8:0+flush-179:023:00:251
403703997268,3cyclictest499235-21kworker/u8:2+events_unbound00:25:240
403703997265,5cyclictest413483-21kworker/u8:3+events_unbound20:00:150
403703997242,28cyclictest723-21Xorg21:37:580
403703997167,3cyclictest398571-21kworker/u8:1+flush-179:019:30:250
403703997161,7cyclictest490885-21/usr/sbin/munin23:40:240
403703997064,5cyclictest447372-21kworker/u8:0+events_unbound21:55:260
403707996862,4cyclictest436278-21kworker/u8:1+flush-179:021:20:161
403707996861,4cyclictest455586-21kworker/u8:2+flush-179:022:00:241
403703996862,4cyclictest482284-21kworker/u8:1+flush-179:000:15:200
403703996855,11cyclictest498676-21apt-get00:05:010
403703996855,11cyclictest498676-21apt-get00:05:000
403707996761,4cyclictest406902-21kworker/u8:3+flush-179:019:20:261
403703996762,3cyclictest505596-21kworker/u8:1+events_unbound00:35:220
40370399670,1cyclictest0-21swapper/023:12:580
403707996660,4cyclictest431498-21kworker/u8:0+events_unbound20:50:251
403703996662,3cyclictest471502-21kworker/u8:0+flush-179:023:05:230
403703996661,4cyclictest479530-21kworker/u8:2+events_unbound23:15:210
403703996661,4cyclictest447372-21kworker/u8:0+events_unbound21:40:230
403703996659,6cyclictest398571-21kworker/u8:1+events_unbound19:10:190
403703996659,5cyclictest410299-21kworker/u8:2+events_unbound19:40:240
403703996658,6cyclictest428276-21kworker/u8:3+events_unbound20:40:160
403709996561,3cyclictest0-21swapper/220:49:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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