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2026-07-07 - 02:44

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 Jul 07, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2834911130,46ptp4l0-21swapper/119:07:581
1496027160,9sleep100-21swapper/1019:08:092
1369927162,6sleep40-21swapper/419:05:156
1498727058,10sleep110-21swapper/1119:08:353
1483927058,10sleep00-21swapper/019:06:230
1484626957,10sleep70-21swapper/719:06:309
1502326858,8sleep60-21swapper/619:09:068
1507626454,8sleep50-21swapper/519:09:537
138682580,0sleep20-21swapper/221:15:144
302702510,0sleep60-21swapper/620:10:238
79972500,0sleep100-21swapper/1020:25:172
1550299230,1cyclictest0-21swapper/1023:30:222
1547499222,16cyclictest0-21swapper/421:25:006
1546999194,9cyclictest0-21swapper/322:10:005
148342198,9sleep80-21swapper/819:06:1910
1549799180,17cyclictest0-21swapper/920:55:1811
283491170,0ptp4l0-21swapper/121:20:001
1549799174,7cyclictest0-21swapper/919:55:0111
1548399174,8cyclictest0-21swapper/621:35:018
1548399174,8cyclictest0-21swapper/621:35:018
1548399172,9cyclictest0-21swapper/622:20:018
1547899173,8cyclictest0-21swapper/523:10:017
1546999174,8cyclictest0-21swapper/319:55:265
1546999172,9cyclictest0-21swapper/320:20:015
1545599174,8cyclictest0-21swapper/022:50:000
1545599174,8cyclictest0-21swapper/000:15:010
1549799163,8cyclictest0-21swapper/921:45:0111
1549799163,8cyclictest0-21swapper/921:45:0011
1549799163,8cyclictest0-21swapper/919:10:0011
1549799161,10cyclictest0-21swapper/923:25:0111
1548399162,9cyclictest0-21swapper/600:30:008
1547899163,8cyclictest0-21swapper/520:00:017
1547499161,9cyclictest0-21swapper/420:15:006
1546999163,8cyclictest0-21swapper/322:05:015
1546999162,8cyclictest0-21swapper/323:40:015
49752150,1sleep20-21swapper/221:45:174
49752150,1sleep20-21swapper/221:45:174
1550899152,9cyclictest0-21swapper/1121:30:013
1550899152,8cyclictest0-21swapper/1119:30:003
1548399152,8cyclictest0-21swapper/600:05:008
1548399152,7cyclictest0-21swapper/620:20:018
1546999153,7cyclictest0-21swapper/322:55:285
1546999153,7cyclictest0-21swapper/320:35:235
1546999153,7cyclictest0-21swapper/319:35:015
1546999152,8cyclictest0-21swapper/321:10:015
1546999151,8cyclictest0-21swapper/321:40:015
1546999151,8cyclictest0-21swapper/321:40:015
1545599152,8cyclictest0-21swapper/022:45:000
283491140,0ptp4l0-21swapper/120:15:111
206142140,0sleep00-21swapper/022:05:170
1550899143,7cyclictest0-21swapper/1100:25:013
1549799142,7cyclictest0-21swapper/923:40:2311
1549799142,7cyclictest0-21swapper/920:55:0111
1548399142,7cyclictest0-21swapper/619:40:008
1548399142,6cyclictest0-21swapper/619:25:018
1547899143,7cyclictest0-21swapper/522:40:017
1547899142,7cyclictest0-21swapper/520:30:017
1546999143,6cyclictest0-21swapper/321:05:005
1546999143,6cyclictest0-21swapper/319:50:005
1546999142,7cyclictest0-21swapper/323:00:235
1546999142,7cyclictest0-21swapper/300:05:015
1546999140,2cyclictest0-21swapper/320:20:185
1545599142,8cyclictest0-21swapper/020:45:010
1545599142,8cyclictest0-21swapper/019:40:000
1545599142,7cyclictest0-21swapper/023:55:240
1545599141,8cyclictest0-21swapper/020:00:000
51072130,0sleep30-21swapper/321:45:185
51072130,0sleep30-21swapper/321:45:185
283491130,5ptp4l21-21ksoftirqd/121:55:221
283491130,5ptp4l21-21ksoftirqd/121:55:221
283491130,4ptp4l21-21ksoftirqd/119:50:191
283491130,1ptp4l21-21ksoftirqd/123:42:181
283491130,1ptp4l21-21ksoftirqd/123:32:401
283491130,1ptp4l21-21ksoftirqd/121:25:131
283491130,1ptp4l21-21ksoftirqd/120:02:541
283491130,1ptp4l21-21ksoftirqd/100:32:351
283491130,1ptp4l21-21ksoftirqd/100:05:201
1550899133,6cyclictest0-21swapper/1119:20:013
1550899132,7cyclictest0-21swapper/1121:25:013
1550899132,7cyclictest0-21swapper/1121:15:003
1550899130,2cyclictest0-21swapper/1122:10:133
1549799132,7cyclictest0-21swapper/923:35:0011
1549799132,6cyclictest0-21swapper/921:30:0111
1548399132,7cyclictest0-21swapper/623:10:018
1548399132,6cyclictest0-21swapper/621:45:018
1548399132,6cyclictest0-21swapper/621:45:018
1547899132,7cyclictest0-21swapper/520:05:017
1546999132,7cyclictest0-21swapper/322:30:255
1546999132,7cyclictest0-21swapper/320:25:255
1546999132,6cyclictest0-21swapper/321:15:015
1546999132,6cyclictest0-21swapper/300:30:255
1545599132,7cyclictest0-21swapper/019:25:010
1545599131,7cyclictest0-21swapper/019:50:010
94080120,5rtkit-daemon0-21swapper/319:07:245
71832120,0sleep70-21swapper/720:25:139
283491120,3ptp4l0-21swapper/119:40:151
283491120,1ptp4l21-21ksoftirqd/123:10:151
283491120,1ptp4l21-21ksoftirqd/122:19:561
283491120,1ptp4l21-21ksoftirqd/121:46:421
283491120,1ptp4l21-21ksoftirqd/121:46:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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