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2025-07-04 - 02:12

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

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 100 highest latencies:
System rack0slot8s.osadl.org (updated Fri Jul 04, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94980990,93rtkit-daemon0-21swapper/519:07:067
275991890,79ptp4l0-21swapper/119:05:191
2560427868,8sleep40-21swapper/419:09:036
2547826754,10sleep70-21swapper/719:07:189
2539126554,9sleep00-21swapper/019:05:590
2559826352,9sleep110-21swapper/1119:08:583
64992610,0sleep121-21ksoftirqd/122:55:001
2560626153,6sleep60-21swapper/619:09:058
102942570,0sleep50-21swapper/500:20:267
2542925544,9sleep100-21swapper/1019:06:332
2605199212,15cyclictest0-21swapper/400:15:016
2607399193,9cyclictest0-21swapper/921:40:0111
2606499191,17cyclictest0-21swapper/721:30:189
2606099191,17cyclictest0-21swapper/600:25:178
275991180,0ptp4l0-21swapper/123:00:221
2607399182,10cyclictest0-21swapper/923:25:0011
2603399186,9cyclictest0-21swapper/022:20:010
2603399186,9cyclictest0-21swapper/022:20:000
2603399184,8cyclictest0-21swapper/019:15:000
2607399173,8cyclictest0-21swapper/922:55:0111
2606499173,8cyclictest0-21swapper/723:40:009
2606499172,6cyclictest0-21swapper/700:40:009
2606099173,9cyclictest0-21swapper/623:30:008
2606099172,9cyclictest0-21swapper/621:25:008
275991160,1ptp4l21-21ksoftirqd/121:15:181
275991160,1ptp4l21-21ksoftirqd/120:45:201
275991160,1ptp4l21-21ksoftirqd/100:20:191
2607399162,9cyclictest0-21swapper/921:20:0111
2606099163,8cyclictest0-21swapper/623:40:008
2604299163,9cyclictest0-21swapper/223:10:014
2604299162,9cyclictest0-21swapper/221:25:004
2604299160,2cyclictest6570-21cat19:25:004
2603799163,8cyclictest0-21swapper/121:10:001
26033991614,1cyclictest618-21turbostat20:00:000
275991150,1ptp4l21-21ksoftirqd/123:20:181
275991150,1ptp4l21-21ksoftirqd/120:35:281
275991150,0ptp4l0-21swapper/122:15:171
275991150,0ptp4l0-21swapper/122:15:161
275991150,0ptp4l0-21swapper/120:50:211
2607399150,14cyclictest0-21swapper/920:20:1811
2606999152,8cyclictest0-21swapper/823:20:0110
2606499153,8cyclictest0-21swapper/721:10:009
2606499153,7cyclictest0-21swapper/723:35:009
2606499153,7cyclictest0-21swapper/723:15:249
2606099153,8cyclictest0-21swapper/600:35:018
2606099152,7cyclictest0-21swapper/621:20:008
2604699152,9cyclictest0-21swapper/320:25:005
2604299152,8cyclictest0-21swapper/220:20:004
2604299151,13cyclictest0-21swapper/221:45:124
2603799152,8cyclictest0-21swapper/120:10:001
2603799152,8cyclictest0-21swapper/119:35:251
2603799152,8cyclictest0-21swapper/119:30:001
2603799152,8cyclictest0-21swapper/100:00:011
2603399152,8cyclictest0-21swapper/000:00:020
2603399152,7cyclictest0-21swapper/022:10:260
2603399152,7cyclictest0-21swapper/022:10:260
275991140,1ptp4l21-21ksoftirqd/122:55:241
275991140,1ptp4l21-21ksoftirqd/121:40:271
275991140,0ptp4l0-21swapper/122:45:201
275991140,0ptp4l0-21swapper/122:00:271
275991140,0ptp4l0-21swapper/120:40:181
2608299143,6cyclictest0-21swapper/1119:20:003
2608299143,6cyclictest0-21swapper/1100:05:253
2607899142,6cyclictest0-21swapper/1020:50:282
2606999142,7cyclictest0-21swapper/823:35:2410
2606499142,7cyclictest0-21swapper/719:10:259
2606099143,7cyclictest0-21swapper/623:15:008
2604699143,7cyclictest0-21swapper/321:45:005
2604699143,7cyclictest0-21swapper/319:20:005
2604699142,8cyclictest0-21swapper/321:30:005
2604299143,7cyclictest0-21swapper/200:05:014
2604299142,8cyclictest0-21swapper/222:45:004
2604299142,7cyclictest0-21swapper/223:55:014
2604299142,7cyclictest0-21swapper/219:30:014
2604299141,7cyclictest2664-21kworker/u24:021:45:004
2604299141,6cyclictest0-21swapper/221:05:184
2604299140,2cyclictest0-21swapper/222:00:244
2604299140,13cyclictest0-21swapper/222:50:154
2603799143,6cyclictest0-21swapper/121:55:001
2603799142,7cyclictest2664-21kworker/u24:022:00:001
2603799142,7cyclictest0-21swapper/122:15:001
2603799142,7cyclictest0-21swapper/122:15:001
2603399143,7cyclictest0-21swapper/021:00:010
2603399143,7cyclictest0-21swapper/019:55:000
2603399143,7cyclictest0-21swapper/019:45:000
2603399143,7cyclictest0-21swapper/000:15:000
95832130,0chrt9582-21unixbench-2d19:25:285
275991130,0ptp4l0-21swapper/120:30:251
275991130,0ptp4l0-21swapper/120:00:271
275991130,0ptp4l0-21swapper/100:10:001
2608299132,7cyclictest0-21swapper/1119:25:273
2607899132,6cyclictest0-21swapper/1019:15:242
2607399132,7cyclictest0-21swapper/922:35:0011
2607399132,7cyclictest0-21swapper/922:35:0011
2607399132,7cyclictest0-21swapper/920:40:2611
2606999132,7cyclictest0-21swapper/822:35:0010
2606999132,7cyclictest0-21swapper/822:35:0010
2606999132,7cyclictest0-21swapper/820:55:2610
2606499132,7cyclictest0-21swapper/723:15:009
2606499132,6cyclictest0-21swapper/722:30:269
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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