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2026-08-11 - 12:13
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 Tue Aug 11, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
66993999145136,7cyclictest765666-21latency_hist00:05:021
66993999145134,9cyclictest773905-21apt-get00:30:041
66993999145134,8cyclictest741198-21latency_hist22:50:011
66993999144134,7cyclictest723414-21latency_hist21:55:011
66993799142135,5cyclictest772328-21kworker/u8:3+events_unbound00:30:010
66993799141125,13cyclictest699014-21latency_hist20:40:010
66993799139131,6cyclictest712237-21kworker/u8:0+events_unbound21:30:280
66993799134121,10cyclictest701366-21kworker/u8:3+flush-179:021:15:000
66993799133128,4cyclictest679432-21kworker/u8:1+events_unbound20:00:010
66993799133123,8cyclictest722063-21kworker/u8:1+flush-179:023:10:000
66993799131124,5cyclictest701366-21kworker/u8:3+events_unbound20:50:010
66993799131113,8cyclictest764060-21kworker/u8:1+events_unbound00:20:010
66993799130112,7cyclictest701366-21kworker/u8:3+flush-179:021:05:150
66993799127118,7cyclictest24004-21kworker/u8:3+flush-179:019:10:140
66993799126118,5cyclictest24004-21kworker/u8:3+events_unbound19:30:010
66993999124118,4cyclictest764060-21kworker/u8:1+flush-179:000:00:011
66993799124116,6cyclictest764060-21kworker/u8:1+events_unbound00:00:000
66993799122112,7cyclictest718690-21kworker/u8:2+events_unbound21:55:130
66993799121110,8cyclictest695864-21kworker/u8:0+flush-179:020:40:190
66993799120114,4cyclictest679432-21kworker/u8:1+flush-179:019:45:010
66993799120113,5cyclictest753243-21kworker/u8:0+flush-179:023:45:260
66993999118108,6cyclictest729761-21kworker/u8:0+flush-179:022:20:141
66993799118113,3cyclictest767747-21kworker/u8:0+events_unbound00:25:000
66993999117108,7cyclictest736187-21http22:35:011
66993799117110,5cyclictest701366-21kworker/u8:3+flush-179:021:00:000
66993799115107,6cyclictest722063-21kworker/u8:1+flush-179:023:20:010
66993799114105,6cyclictest722063-21kworker/u8:1+flush-179:022:00:150
66993799114101,9cyclictest671459-21kworker/u8:0+flush-179:019:30:160
66993999113102,9cyclictest752865-21apt-get23:25:121
66993799113105,5cyclictest24004-21kworker/u8:3+events_unbound19:45:230
66993999112100,9cyclictest717045-21latency_hist21:35:011
66993799111104,4cyclictest710121-21kworker/u8:1+flush-179:021:15:270
6699399911099,8cyclictest1213033-21systemd-journal21:50:011
66993799110102,6cyclictest718687-21kworker/u8:0+events_unbound21:40:240
66993999109101,5cyclictest671415-21latency_hist19:15:011
6699379910899,7cyclictest732419-21kworker/u8:3+events_unbound22:35:230
6699379910899,7cyclictest732419-21kworker/u8:3+events_unbound22:35:220
6699379910899,7cyclictest24004-21kworker/u8:3+flush-179:019:40:000
6699379910897,9cyclictest722063-21kworker/u8:1+flush-179:022:05:200
6699379910896,8cyclictest688580-21kworker/u8:2+events_unbound20:25:120
6699379910891,5cyclictest722063-21kworker/u8:1+events_unbound23:00:150
6699379910795,8cyclictest722063-21kworker/u8:1+events_unbound23:20:160
6699379910795,8cyclictest722063-21kworker/u8:1+events_unbound23:20:150
6699379910698,5cyclictest722063-21kworker/u8:1+events_unbound23:35:150
6699379910695,8cyclictest764065-21kworker/u8:3+flush-179:000:00:270
6699379910694,9cyclictest1213033-21systemd-journal23:45:000
6699399910596,6cyclictest747567-21latency_hist23:10:001
6699379910596,7cyclictest679432-21kworker/u8:1+events_unbound20:15:160
6699379910595,6cyclictest767747-21kworker/u8:0+flush-179:000:35:220
6699399910496,5cyclictest682570-21latency_hist19:50:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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