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2026-08-01 - 18:40
OSADL QA Farm

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of system in rack #0, slot #7

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 rack0slot7.osadl.org (updated Sat Aug 01, 2026 00:46:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)		T*(,W**)
latency
(µs)		CmdPIDPrioCmd
334948999426425,1cyclictest3387519-21kworker/u40:2+events_unbound20:16:1119
334946399425424,1cyclictest3449382-21kworker/u40:4+events_unbound21:40:121
334948999423422,1cyclictest3290107-21kworker/u40:6+events_unbound19:25:3419
334948999421420,1cyclictest3415508-21kworker/u40:2+events_unbound22:00:2519
334947999413413,0cyclictest3444892-21kworker/u40:3+events_unbound21:15:1316
334947999412412,0cyclictest98350irq/154-snd_hda_intel:card120:06:2616
334947999409408,1cyclictest3368607-21kworker/u40:3+events_unbound19:34:4316
334945899404403,1cyclictest3395442-21kworker/0:0+pm20:16:110
334945899403402,1cyclictest3382497-21kworker/0:1+pm19:47:310
334945899402402,0cyclictest3395442-21kworker/0:0+pm22:01:380
334945899402401,1cyclictest3395442-21kworker/0:0+pm23:13:270
334945899401400,1cyclictest3395442-21kworker/0:0+pm21:40:120
334945899399398,1cyclictest3395442-21kworker/0:0+pm20:14:500
334945899399398,1cyclictest3382497-21kworker/0:1+pm19:57:150
334945899398397,1cyclictest3395442-21kworker/0:0+pm20:36:300
334945899387387,0cyclictest3395442-21kworker/0:0+pm20:45:340
334947599386385,1cyclictest3444892-21kworker/u40:3+events_unbound22:01:3815
334947599382381,1cyclictest3394554-21kworker/u40:11+events_unbound20:03:4815
334947599382381,1cyclictest3377938-21kworker/u40:9+events_unbound19:58:0415
334947599381381,0cyclictest3496839-21kworker/u40:4+events_unbound22:06:4315
334946999376375,1cyclictest3520576-21kworker/u40:7+events_unbound23:13:2713
334946999376375,1cyclictest3449382-21kworker/u40:4+events_unbound21:26:1213
334946999376375,1cyclictest3449382-21kworker/u40:4+events_unbound21:26:1113
334946999376375,1cyclictest3432135-21kworker/u40:12+events_unbound21:10:1713
334946999375374,1cyclictest3388010-21kworker/u40:8+events_unbound20:20:3613
334946999374374,0cyclictest3404682-21kworker/u40:13+events_unbound20:26:5613
334946999373372,1cyclictest3415508-21kworker/u40:2+events_unbound22:02:4413
334946999373372,1cyclictest3387519-21kworker/u40:2+events_unbound20:14:4913
334948999369369,0cyclictest18843-21Renderer20:54:2619
334948399334333,1cyclictest3365414-21kworker/u40:0+events_unbound20:06:2717
334947999302299,3cyclictest18843-21Renderer21:33:0616
334947999302299,3cyclictest18843-21Renderer21:33:0616
334947399301297,4cyclictest18843-21Renderer22:05:0914
334946999300296,4cyclictest18843-21Renderer21:44:0113
334948599299298,0cyclictest0-21swapper/819:53:0318
334946599297297,0cyclictest3499595-21kworker/u40:10+events_unbound22:39:5512
334947399296292,4cyclictest18843-21Renderer19:44:0114
334946999289282,5cyclictest18843-21Renderer19:37:4113
334948999288283,5cyclictest18843-21Renderer20:20:0219
334948599288281,6cyclictest18843-21Renderer19:58:4018
334948399288283,5cyclictest18843-21Renderer19:13:0717
334947999288285,3cyclictest18843-21Renderer19:25:1816
334947999288282,6cyclictest18843-21Renderer22:00:1316
334947999288282,6cyclictest18843-21Renderer19:17:5116
334947399288281,5cyclictest18843-21Renderer20:50:3114
334946599288283,5cyclictest18843-21Renderer20:57:5212
334946599288283,5cyclictest18843-21Renderer19:58:2812
334946599288282,5cyclictest18843-21Renderer20:48:0112
334946399288282,5cyclictest18843-21Renderer20:48:261
334946399288282,5cyclictest18843-21Renderer20:19:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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