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2025-12-07 - 17:17

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 Sun Dec 07, 2025 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
949801150,93rtkit-daemon0-21swapper/1007:05:312
275991830,73ptp4l0-21swapper/107:05:281
1258826755,10sleep50-21swapper/507:08:167
200362660,0sleep80-21swapper/807:15:1910
1269926654,9sleep110-21swapper/1107:09:463
1262826655,9sleep60-21swapper/607:08:548
1263926554,9sleep40-21swapper/407:09:036
1246926452,10sleep70-21swapper/707:06:319
1255526250,10sleep00-21swapper/007:07:480
297562560,0sleep10-21swapper/108:10:191
1309399252,17cyclictest0-21swapper/408:20:006
1309399222,7cyclictest0-21swapper/408:35:016
1308099202,11cyclictest0-21swapper/109:35:011
1311699194,9cyclictest0-21swapper/910:15:0011
1308099192,3cyclictest0-21swapper/112:10:161
212862180,0sleep30-21swapper/307:15:275
1309899181,14cyclictest17181-21cpuspeed_turbos07:15:027
1308099183,8cyclictest0-21swapper/109:04:591
1311699172,9cyclictest0-21swapper/907:45:0011
1310299175,7cyclictest0-21swapper/611:25:258
1310299173,9cyclictest0-21swapper/610:50:018
1308999172,9cyclictest0-21swapper/310:25:005
1307499173,8cyclictest0-21swapper/008:05:010
275991160,0ptp4l0-21swapper/110:30:201
275991160,0ptp4l0-21swapper/109:10:191
275991160,0ptp4l0-21swapper/108:25:241
1311699164,7cyclictest0-21swapper/907:10:0111
1311699163,8cyclictest0-21swapper/910:40:0011
1311699162,8cyclictest0-21swapper/908:45:0011
1310299163,8cyclictest0-21swapper/607:20:008
1308999161,14cyclictest0-21swapper/312:35:175
1308999161,14cyclictest0-21swapper/312:35:165
1308099163,8cyclictest0-21swapper/108:05:021
275991150,1ptp4l21-21ksoftirqd/108:50:201
275991150,0ptp4l0-21swapper/112:25:161
275991150,0ptp4l0-21swapper/112:25:151
275991150,0ptp4l0-21swapper/112:20:121
275991150,0ptp4l0-21swapper/109:30:231
275991150,0ptp4l0-21swapper/108:00:131
151702150,0sleep30-21swapper/310:40:145
1312099152,8cyclictest0-21swapper/1009:10:112
1311699153,8cyclictest0-21swapper/909:54:5911
1311699152,8cyclictest0-21swapper/912:40:0111
1311699152,8cyclictest0-21swapper/912:40:0011
1311699152,8cyclictest0-21swapper/909:45:0011
1311699152,8cyclictest0-21swapper/909:30:0011
1310799153,8cyclictest0-21swapper/710:55:019
1310799153,8cyclictest0-21swapper/709:35:009
1310799152,8cyclictest0-21swapper/708:50:009
1310299153,7cyclictest0-21swapper/610:04:598
1310299152,8cyclictest0-21swapper/608:30:018
1310299152,7cyclictest0-21swapper/607:35:248
1309899152,9cyclictest0-21swapper/511:00:017
1308999153,8cyclictest0-21swapper/310:35:005
1308999152,7cyclictest0-21swapper/312:30:015
1308999152,7cyclictest0-21swapper/312:30:005
1308999151,8cyclictest0-21swapper/311:50:005
1308099153,8cyclictest0-21swapper/109:10:001
1308099153,7cyclictest0-21swapper/110:10:001
1308099152,8cyclictest0-21swapper/109:40:231
1307499153,7cyclictest0-21swapper/010:10:010
1307499151,8cyclictest0-21swapper/007:55:010
275991140,1ptp4l21-21ksoftirqd/110:00:191
275991140,0ptp4l0-21swapper/112:15:181
275991140,0ptp4l0-21swapper/112:05:141
1312599143,7cyclictest0-21swapper/1107:35:003
1312599142,7cyclictest0-21swapper/1110:35:003
1312599142,7cyclictest0-21swapper/1109:05:433
1312599142,7cyclictest0-21swapper/1109:05:003
1312599141,8cyclictest0-21swapper/1110:20:013
1311699142,7cyclictest0-21swapper/909:00:0011
1311699142,7cyclictest0-21swapper/908:05:0011
1310799142,7cyclictest0-21swapper/710:00:009
1310799142,7cyclictest0-21swapper/709:40:009
1310299142,8cyclictest0-21swapper/612:20:258
1309899142,8cyclictest0-21swapper/509:20:007
1309899142,7cyclictest0-21swapper/507:25:007
1309899141,9cyclictest10200-21kworker/u24:010:30:007
1308999143,7cyclictest0-21swapper/311:00:015
1308999142,7cyclictest0-21swapper/309:25:005
1307499142,7cyclictest0-21swapper/011:55:010
1307499142,7cyclictest0-21swapper/007:40:000
1307499142,7cyclictest0-21swapper/007:30:010
275991130,1ptp4l21-21ksoftirqd/112:30:491
275991130,1ptp4l21-21ksoftirqd/112:30:481
275991130,0ptp4l0-21swapper/111:20:241
275991130,0ptp4l0-21swapper/110:35:141
275991130,0ptp4l0-21swapper/108:45:001
1311699133,6cyclictest0-21swapper/910:25:0111
1311699133,5cyclictest0-21swapper/908:30:0111
1311699132,7cyclictest0-21swapper/910:15:2311
1311699132,6cyclictest0-21swapper/907:55:0111
1310799133,6cyclictest0-21swapper/711:25:009
1309899133,6cyclictest0-21swapper/509:10:007
1309899133,6cyclictest0-21swapper/508:15:027
1309399132,6cyclictest0-21swapper/408:20:296
1308999132,4cyclictest0-21swapper/312:10:465
1308099133,6cyclictest0-21swapper/107:50:021
1308099132,7cyclictest0-21swapper/111:15:251
275991120,5ptp4l21-21ksoftirqd/111:30:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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