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2026-03-24 - 02:40
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 Mar 23, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
199485299116107,7cyclictest266-21systemd-journal11:40:001
1994849999488,4cyclictest2002423-21kworker/u8:0+events_unbound07:40:250
1994852999283,7cyclictest2043556-21latency_hist09:40:001
1994849999182,7cyclictest2038816-21kworker/u8:2+events_unbound09:40:230
1994849999181,7cyclictest2099744-21latency_hist12:35:010
1994849998984,4cyclictest2054965-21kworker/u8:2+events_unbound10:15:000
1994849998977,9cyclictest266-21systemd-journal10:35:000
1994849998772,5cyclictest1973266-21kworker/u8:0+events_unbound07:15:150
1994852998374,7cyclictest2072441-21latency_hist11:10:021
1994852998374,7cyclictest2072441-21latency_hist11:10:011
1994849998277,4cyclictest2068708-21kworker/u8:0+flush-179:011:05:240
1994849998277,4cyclictest2068708-21kworker/u8:0+flush-179:011:05:240
1994849998177,3cyclictest2029196-21kworker/u8:2+flush-179:009:05:010
1994849998175,4cyclictest2068708-21kworker/u8:0+flush-179:011:20:210
1994849998174,5cyclictest2068708-21kworker/u8:0+events_unbound11:00:240
1994852998072,6cyclictest2014157-21kworker/u8:3+flush-179:008:45:011
1994849998076,3cyclictest2032442-21kworker/u8:0+flush-179:009:15:260
1994849998072,5cyclictest2059699-21kworker/u8:1+events_unbound10:35:220
1994849997975,3cyclictest2074329-21kworker/u8:2+flush-179:011:40:150
1994849997975,3cyclictest2059699-21kworker/u8:1+flush-179:010:40:210
1994849997974,4cyclictest2062952-21kworker/u8:2+events_unbound10:50:230
1994849997671,4cyclictest2092457-21kworker/u8:2+events_unbound12:15:240
1994849997671,3cyclictest2046693-21kworker/u8:0+flush-179:010:00:210
1994849997670,5cyclictest2070836-21kworker/u8:1+events_unbound11:10:240
1994849997664,4cyclictest2077889-21kworker/u8:1+events_unbound11:45:230
1994852997563,8cyclictest266-21systemd-journal09:15:271
1994849997571,3cyclictest2043518-21kworker/u8:1+flush-179:009:55:220
1994849997463,5cyclictest2074329-21kworker/u8:2+events_unbound11:50:260
1994849997368,4cyclictest2009942-21kworker/u8:0+events_unbound08:00:280
1994849997368,4cyclictest2002423-21kworker/u8:0+flush-179:007:45:200
1994849997268,3cyclictest2000319-21kworker/u8:3+flush-179:007:25:210
1994849997262,4cyclictest2054965-21kworker/u8:2+events_unbound10:20:260
1994849997166,4cyclictest2077889-21kworker/u8:1+events_unbound11:25:250
1994849997164,5cyclictest2027096-21kworker/u8:0+events_unbound08:50:210
1994849997065,4cyclictest2101318-21kworker/u8:2+flush-179:012:39:550
1994849996965,3cyclictest2023999-21kworker/u8:1+events_unbound08:45:240
1994849996964,4cyclictest2014157-21kworker/u8:3+flush-179:008:24:560
1994849996964,4cyclictest2009942-21kworker/u8:0+flush-179:008:15:260
1994849996964,4cyclictest2009942-21kworker/u8:0+flush-179:008:15:250
1994849996956,11cyclictest2025785-21latency_hist08:45:010
1994849996863,4cyclictest2046693-21kworker/u8:0+flush-179:009:54:560
1994849996862,4cyclictest2092457-21kworker/u8:2+flush-179:012:20:190
1994849996855,4cyclictest2035613-21kworker/u8:3+events_unbound09:25:220
1994849996763,3cyclictest1997972-21kworker/u8:1+flush-179:007:24:550
1994849996762,4cyclictest2000319-21kworker/u8:3+flush-179:007:30:280
1994849996759,6cyclictest2087272-21apt-get11:55:110
1994849996759,6cyclictest2087272-21apt-get11:55:100
1994852996658,5cyclictest2007755-21latency_hist07:50:011
1994849996662,3cyclictest2009942-21kworker/u8:0+flush-179:008:05:290
1994849996661,4cyclictest2068708-21kworker/u8:0+flush-179:011:15:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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