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2025-11-06 - 00:35

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 Wed Nov 05, 2025 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991920,81ptp4l0-21swapper/107:05:131
262526958,9sleep110-21swapper/1107:06:433
280826657,7sleep50-21swapper/507:09:127
274126553,10sleep70-21swapper/707:08:149
279426454,8sleep40-21swapper/407:08:596
273426453,9sleep00-21swapper/007:08:070
257226355,6sleep100-21swapper/1007:05:542
3198926250,9sleep60-21swapper/607:05:138
102842610,0sleep110-21swapper/1110:05:133
267232580,0sleep80-21swapper/811:05:2910
263042510,0sleep100-21swapper/1008:20:132
263042510,0sleep100-21swapper/1008:20:122
329599380,1cyclictest0-21swapper/1012:35:222
3295992525,0cyclictest0-21swapper/1011:00:272
275991230,1ptp4l21-21ksoftirqd/107:50:211
284972200,0sleep50-21swapper/509:05:017
325299194,9cyclictest0-21swapper/212:30:264
325299192,10cyclictest0-21swapper/211:54:594
325299183,10cyclictest0-21swapper/210:10:014
325299183,10cyclictest0-21swapper/208:35:014
325299183,10cyclictest0-21swapper/208:35:004
329599170,1cyclictest0-21swapper/1011:35:232
328699174,7cyclictest0-21swapper/809:55:0010
328699173,8cyclictest0-21swapper/811:50:0110
325299173,9cyclictest0-21swapper/211:10:004
325299173,9cyclictest0-21swapper/209:35:004
325299173,9cyclictest0-21swapper/209:30:014
275991170,0ptp4l0-21swapper/109:45:151
275991170,0ptp4l0-21swapper/109:40:211
330099162,9cyclictest0-21swapper/1111:45:013
329599160,2cyclictest0-21swapper/1012:00:192
328699163,8cyclictest0-21swapper/808:25:0010
328699163,8cyclictest0-21swapper/808:25:0010
328699162,8cyclictest0-21swapper/808:15:0110
327599163,8cyclictest0-21swapper/609:30:008
327599162,8cyclictest0-21swapper/611:35:008
325299163,8cyclictest0-21swapper/208:50:014
325299162,9cyclictest0-21swapper/209:50:014
324299163,7cyclictest0-21swapper/009:10:000
324299162,8cyclictest0-21swapper/012:05:010
27852167,7sleep80-21swapper/807:08:5110
275991160,0ptp4l0-21swapper/109:00:111
329599153,7cyclictest0-21swapper/1009:27:452
3295991512,3cyclictest0-21swapper/1007:30:172
328699152,7cyclictest0-21swapper/809:05:0010
325299153,8cyclictest0-21swapper/209:20:244
325299153,8cyclictest0-21swapper/209:10:014
325299152,8cyclictest0-21swapper/212:15:254
275991150,1ptp4l21-21ksoftirqd/112:15:241
275991150,1ptp4l21-21ksoftirqd/109:10:451
275991150,1ptp4l21-21ksoftirqd/108:55:131
275991150,1ptp4l21-21ksoftirqd/108:00:241
275991150,1ptp4l21-21ksoftirqd/108:00:241
275991150,1ptp4l21-21ksoftirqd/107:57:551
275991150,0ptp4l0-21swapper/112:30:181
275991150,0ptp4l0-21swapper/108:35:231
275991150,0ptp4l0-21swapper/108:35:231
214452150,0sleep00-21swapper/008:10:260
176702150,0sleep20-21swapper/209:30:254
82922140,0sleep60-21swapper/607:15:028
54342140,0sleep90-21swapper/907:50:2111
330099142,7cyclictest0-21swapper/1112:34:593
328699143,6cyclictest0-21swapper/811:55:0010
328099141,7cyclictest0-21swapper/707:50:009
326699143,6cyclictest14850irq/20-ata_piix12:10:016
325299143,7cyclictest0-21swapper/212:28:434
325299143,6cyclictest0-21swapper/207:25:004
324299141,7cyclictest0-21swapper/011:10:000
275991140,1ptp4l21-21ksoftirqd/110:25:221
275991140,0ptp4l0-21swapper/111:55:231
275991140,0ptp4l0-21swapper/110:30:351
275991140,0ptp4l0-21swapper/107:35:281
201682140,0sleep20-21swapper/207:30:124
330099133,6cyclictest0-21swapper/1108:55:013
330099132,7cyclictest0-21swapper/1112:09:593
329599135,8cyclictest0-21swapper/1011:55:152
329199133,9cyclictest0-21swapper/911:50:0011
328699132,6cyclictest0-21swapper/810:30:0010
326699133,6cyclictest0-21swapper/408:50:236
3266991311,1cyclictest0-21swapper/409:55:006
325799132,7cyclictest0-21swapper/307:15:005
325299132,8cyclictest0-21swapper/210:50:024
324799133,7cyclictest0-21swapper/108:40:001
324799133,7cyclictest0-21swapper/108:40:001
324299132,6cyclictest0-21swapper/007:45:000
324299131,8cyclictest11821-21kworker/u24:110:40:010
312802130,0sleep00-21swapper/011:55:140
275991130,1ptp4l21-21ksoftirqd/111:03:241
275991130,1ptp4l21-21ksoftirqd/110:55:141
275991130,0ptp4l0-21swapper/111:40:181
275991130,0ptp4l0-21swapper/111:20:141
275991130,0ptp4l0-21swapper/108:45:121
275991130,0ptp4l0-21swapper/108:24:431
275991130,0ptp4l0-21swapper/108:24:431
330099121,7cyclictest0-21swapper/1108:50:013
329199129,2cyclictest0-21swapper/908:05:1811
329199123,8cyclictest0-21swapper/910:35:2811
329199123,8cyclictest0-21swapper/909:35:0111
329199123,6cyclictest0-21swapper/909:05:0011
329199122,7cyclictest0-21swapper/907:45:0011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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