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2025-12-01 - 09:43

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 Mon Dec 01, 2025 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2759911170,105ptp4l0-21swapper/119:05:141
1288226754,10sleep50-21swapper/519:05:247
1052526654,10sleep00-21swapper/019:05:080
1362426554,9sleep110-21swapper/1119:06:553
1374026454,8sleep40-21swapper/419:08:366
1376926351,10sleep70-21swapper/719:09:049
1356826151,8sleep60-21swapper/619:06:148
1373326050,8sleep100-21swapper/1019:08:312
184622560,0sleep20-21swapper/221:20:004
168782540,0sleep100-21swapper/1020:35:152
1420399283,20cyclictest0-21swapper/421:35:006
1423299250,1cyclictest0-21swapper/1020:50:282
1420399221,7cyclictest0-21swapper/419:35:016
1420399212,15cyclictest0-21swapper/400:20:016
1420399212,15cyclictest0-21swapper/400:20:006
1420399211,15cyclictest0-21swapper/422:00:016
1420399191,14cyclictest0-21swapper/423:30:006
1419499194,10cyclictest0-21swapper/200:40:004
1419499194,10cyclictest0-21swapper/200:40:004
1419499193,11cyclictest0-21swapper/220:40:004
275991180,0ptp4l0-21swapper/122:50:001
113382188,7sleep80-21swapper/819:05:1610
1422899171,16cyclictest0-21swapper/919:25:1511
1422399170,16cyclictest0-21swapper/821:30:1710
1421999172,8cyclictest0-21swapper/700:00:019
1421999172,8cyclictest0-21swapper/700:00:009
1419899176,7cyclictest12641-21kworker/u24:022:55:005
1419899173,7cyclictest0-21swapper/320:59:595
1419899172,9cyclictest0-21swapper/319:55:005
1419499173,9cyclictest0-21swapper/222:20:004
1419499173,9cyclictest0-21swapper/219:25:014
1418999173,8cyclictest0-21swapper/120:00:011
100112170,0sleep00-21swapper/021:50:130
275991160,1ptp4l21-21ksoftirqd/120:15:141
275991160,0ptp4l0-21swapper/122:30:191
275991160,0ptp4l0-21swapper/120:40:001
275991160,0ptp4l0-21swapper/120:05:121
275991160,0ptp4l0-21swapper/119:45:141
1423299160,15cyclictest0-21swapper/1022:10:172
1422899163,8cyclictest0-21swapper/923:35:0111
1422899162,8cyclictest0-21swapper/923:00:0011
14223991612,2cyclictest0-21swapper/821:15:1810
1420899163,8cyclictest0-21swapper/523:35:007
1420399162,9cyclictest0-21swapper/400:15:206
1420399161,2cyclictest0-21swapper/422:50:196
1419899163,8cyclictest0-21swapper/320:35:015
275991150,6ptp4l21-21ksoftirqd/121:55:161
275991150,1ptp4l21-21ksoftirqd/123:15:171
275991150,1ptp4l21-21ksoftirqd/121:45:231
275991150,1ptp4l21-21ksoftirqd/119:15:211
275991150,1ptp4l21-21ksoftirqd/100:00:251
275991150,0ptp4l0-21swapper/122:40:171
275991150,0ptp4l0-21swapper/120:50:001
1423799153,8cyclictest0-21swapper/1119:40:003
1422899152,8cyclictest0-21swapper/921:05:0011
1422899152,7cyclictest0-21swapper/900:30:0111
1422899152,7cyclictest0-21swapper/900:30:0011
14228991512,2cyclictest0-21swapper/921:25:1711
1422399153,7cyclictest0-21swapper/823:20:0010
1422399152,8cyclictest0-21swapper/823:39:5910
1422399152,7cyclictest0-21swapper/820:49:5910
1421999151,9cyclictest0-21swapper/720:15:019
1420899153,7cyclictest0-21swapper/522:30:267
1419899152,8cyclictest0-21swapper/321:24:595
1419499152,8cyclictest0-21swapper/221:30:264
1419499152,10cyclictest0-21swapper/223:35:264
1418999153,7cyclictest0-21swapper/100:25:001
1418999153,7cyclictest0-21swapper/100:25:001
1418999151,9cyclictest0-21swapper/123:15:001
71322140,0sleep40-21swapper/423:10:156
275991140,1ptp4l21-21ksoftirqd/123:27:231
275991140,0ptp4l22951-21gltestperf23:30:151
275991140,0ptp4l0-21swapper/122:35:141
255182140,0sleep90-21swapper/922:10:1211
1423799142,8cyclictest0-21swapper/1119:20:003
1423799140,1cyclictest0-21swapper/1120:50:283
1423299142,7cyclictest0-21swapper/1019:30:252
1422899142,8cyclictest0-21swapper/923:25:0111
1422899142,7cyclictest0-21swapper/922:35:0011
1422899142,7cyclictest0-21swapper/919:35:2611
1422899142,6cyclictest0-21swapper/920:35:2611
1422399143,7cyclictest0-21swapper/821:09:5910
1422399143,7cyclictest0-21swapper/820:40:0110
1422399142,7cyclictest0-21swapper/819:30:0110
1422399142,7cyclictest0-21swapper/800:40:0110
1422399142,7cyclictest0-21swapper/800:40:0010
1421999142,7cyclictest0-21swapper/722:19:599
1421999142,7cyclictest0-21swapper/719:50:269
1421999141,9cyclictest11046-21kworker/u24:100:35:019
1421999141,9cyclictest11046-21kworker/u24:100:35:019
1421999140,8cyclictest0-21swapper/700:30:009
1421999140,8cyclictest0-21swapper/700:29:599
1420899143,7cyclictest0-21swapper/520:45:007
1420399141,2cyclictest0-21swapper/423:00:186
1419499143,9cyclictest0-21swapper/222:40:004
1419499143,7cyclictest0-21swapper/222:49:594
1419499143,7cyclictest0-21swapper/222:10:234
275991130,3ptp4l0-21swapper/121:40:151
275991130,1ptp4l21-21ksoftirqd/121:12:241
275991130,1ptp4l21-21ksoftirqd/120:55:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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