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2025-12-02 - 12:32

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 Tue Dec 02, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991980,89ptp4l0-21swapper/119:06:591
92526654,10sleep00-21swapper/019:07:430
103726653,10sleep50-21swapper/519:09:017
103926453,9sleep70-21swapper/719:09:039
101626352,9sleep110-21swapper/1119:08:433
106726251,9sleep60-21swapper/619:09:268
3017826048,10sleep100-21swapper/1019:05:052
33302590,0sleep90-21swapper/900:05:0011
33302590,0sleep90-21swapper/900:05:0011
12022590,0sleep20-21swapper/219:50:014
120022590,0sleep90-21swapper/900:15:1411
120022590,0sleep90-21swapper/900:15:1311
3252025543,9sleep40-21swapper/419:05:226
147899290,1cyclictest0-21swapper/1023:45:222
94980270,4rtkit-daemon0-21swapper/819:06:2110
275991210,0ptp4l0-21swapper/123:40:201
147399203,9cyclictest0-21swapper/919:45:0111
146399194,8cyclictest0-21swapper/723:45:019
143299194,9cyclictest0-21swapper/220:42:014
142799194,9cyclictest0-21swapper/119:50:011
143299183,9cyclictest0-21swapper/219:35:014
142399182,10cyclictest0-21swapper/019:10:010
275991170,1ptp4l21-21ksoftirqd/121:35:141
146399174,8cyclictest0-21swapper/721:40:009
143299174,8cyclictest0-21swapper/223:10:004
143299173,8cyclictest0-21swapper/220:35:004
142799172,8cyclictest0-21swapper/123:55:261
142399172,9cyclictest0-21swapper/022:00:000
142399172,14cyclictest0-21swapper/020:00:200
275991160,1ptp4l21-21ksoftirqd/123:45:181
275991160,1ptp4l21-21ksoftirqd/119:15:161
146399160,15cyclictest0-21swapper/723:20:179
143299162,9cyclictest0-21swapper/221:59:594
142799162,9cyclictest0-21swapper/120:50:001
142399161,9cyclictest0-21swapper/021:10:010
275991150,1ptp4l21-21ksoftirqd/121:25:201
269662150,0sleep5441rcuc/523:10:137
147899152,7cyclictest0-21swapper/1020:35:242
147399154,8cyclictest0-21swapper/920:35:0011
146399153,7cyclictest0-21swapper/722:35:019
145899153,8cyclictest0-21swapper/619:20:018
145899153,7cyclictest0-21swapper/620:30:008
144699152,8cyclictest0-21swapper/420:55:276
143299153,7cyclictest0-21swapper/223:45:014
143299153,7cyclictest0-21swapper/220:50:004
143299152,8cyclictest0-21swapper/200:10:014
143299152,8cyclictest0-21swapper/200:10:004
143299150,14cyclictest0-21swapper/219:50:174
142399152,8cyclictest0-21swapper/021:30:000
275991140,1ptp4l21-21ksoftirqd/120:00:181
1478991412,1cyclictest0-21swapper/1020:59:542
145899142,7cyclictest0-21swapper/622:00:008
1438991411,2cyclictest0-21swapper/321:45:195
143299143,8cyclictest0-21swapper/220:20:264
142799142,8cyclictest0-21swapper/120:00:001
142399143,7cyclictest0-21swapper/022:30:250
142399142,7cyclictest0-21swapper/022:25:010
142399142,7cyclictest0-21swapper/021:04:590
142399142,6cyclictest0-21swapper/023:05:010
142399141,7cyclictest0-21swapper/022:05:010
142399140,9cyclictest0-21swapper/020:10:000
312392136,5sleep90-21swapper/919:05:1611
275991130,5ptp4l21-21ksoftirqd/100:35:241
275991130,1ptp4l21-21ksoftirqd/123:29:191
275991130,1ptp4l21-21ksoftirqd/123:15:141
275991130,1ptp4l21-21ksoftirqd/122:57:591
275991130,1ptp4l21-21ksoftirqd/122:26:071
275991130,1ptp4l21-21ksoftirqd/121:55:171
275991130,1ptp4l21-21ksoftirqd/121:45:291
275991130,1ptp4l21-21ksoftirqd/100:30:121
275991130,0ptp4l0-21swapper/123:35:191
275991130,0ptp4l0-21swapper/119:25:181
263832130,0sleep50-21swapper/521:45:167
146899132,7cyclictest0-21swapper/821:44:5910
146899132,7cyclictest0-21swapper/800:20:0110
146899132,7cyclictest0-21swapper/800:20:0110
146399132,6cyclictest0-21swapper/721:00:259
146399132,6cyclictest0-21swapper/720:00:009
145899131,7cyclictest0-21swapper/621:35:248
142799134,6cyclictest18635-21kworker/u24:119:25:011
142799132,7cyclictest0-21swapper/122:00:231
142799132,7cyclictest0-21swapper/120:30:001
142799132,6cyclictest0-21swapper/120:45:001
142799131,7cyclictest0-21swapper/121:15:221
1423991311,1cyclictest0-21swapper/019:20:000
142399130,8cyclictest0-21swapper/021:30:240
275991120,4ptp4l21-21ksoftirqd/123:05:241
275991120,4ptp4l21-21ksoftirqd/122:05:011
275991120,1ptp4l21-21ksoftirqd/123:30:211
275991120,1ptp4l21-21ksoftirqd/122:50:211
275991120,1ptp4l21-21ksoftirqd/122:45:071
275991120,1ptp4l21-21ksoftirqd/122:35:151
275991120,1ptp4l21-21ksoftirqd/119:35:181
275991120,0ptp4l0-21swapper/120:15:241
147899122,6cyclictest0-21swapper/1020:15:242
147899122,6cyclictest0-21swapper/1000:15:252
147899122,6cyclictest0-21swapper/1000:15:242
147399122,6cyclictest0-21swapper/900:25:0111
146399120,11cyclictest0-21swapper/720:44:599
145899120,11cyclictest27161-21perl19:40:158
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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