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2025-10-14 - 03:58

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 Oct 14, 2025 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275991970,87ptp4l0-21swapper/119:06:291
100992960,0sleep20-21swapper/222:05:014
94980900,84rtkit-daemon0-21swapper/019:09:550
26762720,0sleep30-21swapper/322:35:175
1211726756,9sleep110-21swapper/1119:06:153
1230126553,10sleep40-21swapper/419:08:446
1212626547,10sleep70-21swapper/719:06:239
1209826553,10sleep50-21swapper/519:05:567
1217026149,10sleep100-21swapper/1019:07:022
1207326150,9sleep60-21swapper/619:05:338
137832570,0sleep110-21swapper/1119:10:143
1281299400,3cyclictest0-21swapper/1021:55:162
123292240,0chrt0-21swapper/520:30:177
123292240,0chrt0-21swapper/520:30:177
32502230,0sleep60-21swapper/623:20:018
1278399222,16cyclictest0-21swapper/420:50:016
1278399221,16cyclictest0-21swapper/421:25:016
233882210,0sleep80-21swapper/823:00:2510
1277499194,10cyclictest0-21swapper/219:55:014
1277499193,11cyclictest0-21swapper/223:35:004
1276499194,9cyclictest0-21swapper/000:10:000
1280899183,9cyclictest0-21swapper/920:05:0111
275991170,0ptp4l0-21swapper/122:10:171
1279299172,9cyclictest0-21swapper/621:15:018
1278799173,8cyclictest0-21swapper/500:35:007
1277499173,9cyclictest0-21swapper/220:15:014
1277499173,8cyclictest0-21swapper/219:45:014
1276499170,11cyclictest0-21swapper/023:20:000
123052178,7sleep80-21swapper/819:08:4710
275991160,1ptp4l21-21ksoftirqd/100:10:151
275991160,0ptp4l0-21swapper/123:25:191
275991160,0ptp4l0-21swapper/119:35:231
1280899162,9cyclictest0-21swapper/922:50:0111
1280899162,8cyclictest0-21swapper/922:40:0111
1278799163,7cyclictest0-21swapper/522:50:017
1278799162,10cyclictest0-21swapper/520:37:107
12783991612,3cyclictest0-21swapper/422:20:206
1277899164,7cyclictest0-21swapper/322:30:015
1277899163,8cyclictest0-21swapper/300:35:005
1277499163,8cyclictest0-21swapper/223:25:014
1277499163,8cyclictest0-21swapper/220:10:014
1277499163,8cyclictest0-21swapper/219:10:254
79452150,0sleep60-21swapper/623:25:138
275991150,1ptp4l21-21ksoftirqd/120:50:211
275991150,0ptp4l0-21swapper/121:25:271
275991150,0ptp4l0-21swapper/121:05:251
1280899152,8cyclictest0-21swapper/920:35:0111
1280899152,8cyclictest0-21swapper/920:35:0111
1280899152,8cyclictest0-21swapper/919:45:0111
1280299153,7cyclictest0-21swapper/820:20:0110
1280299153,7cyclictest0-21swapper/820:20:0110
1280299153,7cyclictest0-21swapper/820:05:0110
1279299153,7cyclictest0-21swapper/600:15:008
1278799153,8cyclictest0-21swapper/522:05:007
1277899152,8cyclictest0-21swapper/323:00:015
1277899152,8cyclictest0-21swapper/322:20:015
1277899152,8cyclictest0-21swapper/320:00:015
1277899152,8cyclictest0-21swapper/300:20:005
1277899151,8cyclictest0-21swapper/322:05:015
1277499153,7cyclictest0-21swapper/221:00:194
12768991512,2cyclictest0-21swapper/122:00:181
275991140,0ptp4l0-21swapper/119:30:271
209772140,0sleep80-21swapper/821:35:1510
156132140,0sleep60-21swapper/621:30:018
1281799143,8cyclictest0-21swapper/1121:00:013
1281799142,8cyclictest0-21swapper/1122:10:013
1281299143,7cyclictest0-21swapper/1021:00:012
1280899143,6cyclictest0-21swapper/900:00:0011
1280899142,7cyclictest0-21swapper/923:40:2511
1280299143,6cyclictest0-21swapper/800:30:0010
1279299143,7cyclictest0-21swapper/620:50:018
1279299142,7cyclictest0-21swapper/623:05:018
1278799143,7cyclictest0-21swapper/521:20:017
1278799142,7cyclictest0-21swapper/519:25:007
1278399142,7cyclictest0-21swapper/422:30:256
1277899142,7cyclictest0-21swapper/323:40:005
1277899142,7cyclictest0-21swapper/322:45:015
1277899142,7cyclictest0-21swapper/319:50:005
1277499140,8cyclictest0-21swapper/220:50:244
1276899143,6cyclictest0-21swapper/121:45:011
1276899142,7cyclictest0-21swapper/123:35:241
1276899142,7cyclictest0-21swapper/123:20:011
1276499142,8cyclictest0-21swapper/022:10:010
1276499142,7cyclictest0-21swapper/022:40:010
1276499142,7cyclictest0-21swapper/020:50:010
275991130,1ptp4l21-21ksoftirqd/123:10:011
275991130,1ptp4l21-21ksoftirqd/121:11:421
275991130,0ptp4l0-21swapper/121:00:141
1281799132,6cyclictest0-21swapper/1121:10:003
1281299133,8cyclictest0-21swapper/1022:50:012
1281299132,8cyclictest0-21swapper/1021:35:012
1281299132,7cyclictest0-21swapper/1019:35:252
1281299130,1cyclictest0-21swapper/1019:55:242
1281299130,12cyclictest15044-21/usr/sbin/munin19:50:282
12802991311,1cyclictest0-21swapper/819:25:1710
1279899133,6cyclictest0-21swapper/719:35:009
1279299132,7cyclictest0-21swapper/619:30:018
1279299132,7cyclictest0-21swapper/619:14:598
1279299130,8cyclictest0-21swapper/600:40:008
1278799132,7cyclictest0-21swapper/522:20:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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