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2025-11-16 - 06:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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.

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 rack2slot7s.osadl.org (updated Sun Nov 16, 2025 00:39:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2882307997064,4cyclictest955-21mta-sts-daemon21:04:080
2882307997064,4cyclictest955-21mta-sts-daemon21:04:080
2882309996348,10cyclictest3046038-21cups-browsed00:29:142
2882308995648,5cyclictest2886810-21munin-plugin-st19:25:011
2882307995637,12cyclictest12450irq/32-eth020:39:100
288230999541,27cyclictest2925007-21ssh21:19:152
2882308995243,6cyclictest2882306-21cyclictest21:39:101
2882307995140,8cyclictest1-21systemd23:50:010
2882307995140,8cyclictest1-21systemd23:50:010
288230999502,20cyclictest2958557-21ssh22:04:172
2882307994926,17cyclictest12450irq/32-eth023:29:140
2882309994821,25cyclictest2984162-21sh22:38:512
2882309994813,7cyclictest3050571-21sh00:06:302
2882308994840,5cyclictest422-21dbus-daemon22:45:011
2882309994722,22cyclictest2965478-21cpu22:14:002
2882307994731,10cyclictest12450irq/32-eth021:44:160
2882309994617,6cyclictest1074632-21cups-browsed23:14:152
2882309994534,5cyclictest0-21swapper/223:44:112
2882309994534,5cyclictest0-21swapper/223:44:112
2882309994523,20cyclictest0-21swapper/222:29:242
2882309994523,20cyclictest0-21swapper/222:29:242
2882309994522,20cyclictest0-21swapper/223:24:062
2882308994537,5cyclictest1-21systemd00:00:011
2882308994536,6cyclictest1074632-21cups-browsed21:20:011
288230999441,19cyclictest3062620-21ssh00:24:122
2882308994437,3cyclictest0-21swapper/121:45:011
288230899443,34cyclictest2966054-21ssh22:14:111
288230899442,34cyclictest2932303-21ssh21:29:131
2882307994433,8cyclictest421-21avahi-daemon00:06:180
2882307994431,6cyclictest12450irq/32-eth022:19:100
288230999432,22cyclictest422-21dbus-daemon21:09:102
288230999432,22cyclictest422-21dbus-daemon21:09:102
2882309994319,2cyclictest0-21swapper/219:40:012
2882308994334,6cyclictest421-21avahi-daemon00:19:051
2882307994336,3cyclictest0-21swapper/022:39:050
288230999429,12cyclictest2981287-21ntpq22:34:142
288230999422,14cyclictest3037784-21ssh23:49:142
288230999422,14cyclictest3037784-21ssh23:49:142
2882309994221,2cyclictest0-21swapper/222:59:012
2882309994211,8cyclictest351ktimers/222:19:142
288230999421,18cyclictest2939595-21ssh21:39:072
2882308994234,5cyclictest3004203-21switchtime23:04:221
2882308994234,5cyclictest2918282-21idleruntime-cro21:10:001
2882308994234,5cyclictest2918282-21idleruntime-cro21:10:001
2882308994232,6cyclictest0-21swapper/123:49:081
2882308994232,6cyclictest0-21swapper/123:49:081
288230999412,17cyclictest3022705-21ssh23:29:122
288230999412,17cyclictest2988855-21ssh22:44:152
288230999412,16cyclictest2928676-21ssh21:24:132
2882309994113,8cyclictest3049654-21cron00:05:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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