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2026-07-14 - 12:22
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 Jul 14, 2026 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
15060799146118,25cyclictest243971-40mandb00:00:011
15060799125116,6cyclictest245601-21latency_hist00:05:011
15060799116109,5cyclictest200686-21kworker/u8:3+events_unbound22:30:001
15060399114100,11cyclictest1213033-21systemd-journal20:10:010
1506039911298,12cyclictest1213033-21systemd-journal00:00:010
15060799111101,7cyclictest153926-21latency_hist19:20:011
15060399109104,4cyclictest197439-21kworker/u8:2+events_unbound21:35:260
15060399109104,3cyclictest203846-21kworker/u8:1+events_unbound22:00:190
15060399107102,3cyclictest251449-21kworker/u8:0+events_unbound00:25:260
1506039910499,4cyclictest215579-21kworker/u8:0+events_unbound22:40:260
1506039910498,5cyclictest173275-21kworker/u8:0+flush-179:020:30:240
1506039910394,5cyclictest222973-21latency_hist22:55:000
1506039910393,4cyclictest251449-21kworker/u8:0+events_unbound00:30:190
1506039910390,10cyclictest190843-21http21:15:010
1506079910090,8cyclictest232798-21latency_hist23:25:011
1506039910096,3cyclictest152047-21kworker/u8:2+events_unbound19:25:250
1506039910086,11cyclictest1213033-21systemd-journal00:20:010
1506039910086,11cyclictest1213033-21systemd-journal00:20:010
150607999990,7cyclictest163744-21latency_hist19:50:011
150603999993,4cyclictest173275-21kworker/u8:0+flush-179:020:50:220
150603999893,4cyclictest173275-21kworker/u8:0+events_unbound20:35:240
150603999893,4cyclictest173275-21kworker/u8:0+events_unbound20:35:240
150603999791,4cyclictest174887-21kworker/u8:1+events_unbound20:45:200
150603999692,3cyclictest197432-21kworker/u8:1+events_unbound21:40:250
150603999590,3cyclictest174887-21kworker/u8:1+events_unbound20:40:190
150607999488,4cyclictest171702-21latency_hist20:15:011
150603999387,4cyclictest224626-21kworker/u8:3+events_unbound23:25:200
150603999387,4cyclictest190789-21kworker/u8:1+events_unbound21:15:260
150603999387,4cyclictest170106-21kworker/u8:1+events_unbound20:10:180
150603999381,5cyclictest212830-21kworker/u8:2+events_unbound22:20:230
150603999381,5cyclictest212830-21kworker/u8:2+events_unbound22:20:230
150603999287,4cyclictest187615-21kworker/u8:0+events_unbound21:25:240
150603999085,4cyclictest251449-21kworker/u8:0+flush-179:000:20:240
150603998984,4cyclictest203846-21kworker/u8:1+flush-179:021:55:300
150603998978,8cyclictest230950-21apt-get23:20:000
150607998880,6cyclictest206438-21kworker/u8:0+flush-179:022:10:221
150607998879,7cyclictest173550-21/usr/sbin/munin20:20:171
150603998882,4cyclictest252004-21kworker/u8:3+events_unbound00:35:240
150603998879,3cyclictest173275-21kworker/u8:0+events_unbound20:25:150
150603998878,8cyclictest152585-21apt-get19:15:120
150603998782,4cyclictest243910-21kworker/u8:1+flush-179:000:00:240
150603998676,4cyclictest224626-21kworker/u8:3+events_unbound23:20:160
150607998473,8cyclictest1213033-21systemd-journal23:00:001
150603998480,3cyclictest174887-21kworker/u8:1+events_unbound21:00:290
150603998475,3cyclictest152047-21kworker/u8:2+events_unbound19:45:240
150607998375,6cyclictest173275-21kworker/u8:0+flush-179:020:35:151
150607998375,6cyclictest173275-21kworker/u8:0+flush-179:020:35:141
150603998175,4cyclictest187615-21kworker/u8:0+events_unbound21:05:140
150607998077,2cyclictest240724-21kworker/u8:0+events_unbound23:50:201
150603998076,3cyclictest224626-21kworker/u8:3+events_unbound23:30:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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