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2025-12-12 - 08:52

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 Fri Dec 12, 2025 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2759911050,94ptp4l0-21swapper/119:08:401
187721040,0sleep10-21swapper/121:00:201
1109328271,9sleep40-21swapper/419:06:476
1131626855,11sleep50-21swapper/519:10:007
802526554,8sleep70-21swapper/719:05:139
1107026552,10sleep110-21swapper/1119:06:293
10682650,0sleep90-21swapper/922:25:0011
1110226351,10sleep00-21swapper/019:06:540
1128926251,9sleep60-21swapper/619:09:368
1128025948,9sleep100-21swapper/1019:09:282
127612570,0sleep100-21swapper/1023:20:192
215312560,0sleep110-21swapper/1122:50:173
1171399213,14cyclictest0-21swapper/420:50:006
1172299202,11cyclictest0-21swapper/620:30:018
1174399193,10cyclictest0-21swapper/1021:00:282
1170399194,9cyclictest0-21swapper/219:15:014
1170999184,8cyclictest0-21swapper/323:05:005
1169999183,9cyclictest0-21swapper/119:25:011
1169999182,10cyclictest0-21swapper/122:50:011
106232180,0sleep10-21swapper/100:00:161
106232180,0sleep10-21swapper/100:00:151
275991170,1ptp4l0-21swapper/123:20:141
1170399174,8cyclictest0-21swapper/220:40:014
1170399173,9cyclictest0-21swapper/219:25:014
1170399173,9cyclictest0-21swapper/200:35:004
1170399171,2cyclictest0-21swapper/222:00:184
1169999172,14cyclictest0-21swapper/121:25:231
1169499172,9cyclictest0-21swapper/023:35:010
1174799161,8cyclictest0-21swapper/1123:35:003
1173499163,8cyclictest0-21swapper/822:55:0010
1172799163,9cyclictest0-21swapper/720:05:019
1172299162,9cyclictest0-21swapper/621:20:008
1172299162,9cyclictest0-21swapper/600:40:018
1170999163,8cyclictest0-21swapper/320:00:015
1169499163,8cyclictest0-21swapper/000:32:200
1169499163,7cyclictest0-21swapper/023:15:000
11694991612,2cyclictest0-21swapper/023:35:170
275991150,0ptp4l0-21swapper/123:30:131
240282150,0sleep40-21swapper/421:30:146
1174799153,7cyclictest0-21swapper/1123:05:013
1174799150,14cyclictest0-21swapper/1121:50:213
1173899152,8cyclictest0-21swapper/923:05:2611
1172799153,7cyclictest0-21swapper/700:15:279
1172299152,7cyclictest0-21swapper/600:15:008
1171399152,12cyclictest0-21swapper/423:45:006
1170999153,8cyclictest0-21swapper/300:10:015
1170999153,8cyclictest0-21swapper/300:10:005
1170999153,7cyclictest0-21swapper/321:45:275
1170999152,7cyclictest0-21swapper/322:35:005
1170999152,7cyclictest0-21swapper/321:55:005
1170399153,8cyclictest0-21swapper/219:15:244
1169999154,8cyclictest3166-21kworker/u24:021:40:001
1169999153,6cyclictest0-21swapper/122:35:001
1169999152,8cyclictest0-21swapper/119:25:011
1169999150,2cyclictest0-21swapper/121:30:171
1169499152,8cyclictest0-21swapper/020:30:240
275991140,0ptp4l0-21swapper/122:42:071
275991140,0ptp4l0-21swapper/121:42:011
275991140,0ptp4l0-21swapper/100:35:171
1174799143,6cyclictest0-21swapper/1121:25:003
1174799143,6cyclictest0-21swapper/1120:10:003
1174799142,7cyclictest0-21swapper/1121:05:303
1174799141,8cyclictest0-21swapper/1119:15:013
1173899143,7cyclictest0-21swapper/921:10:0011
1173899142,8cyclictest0-21swapper/922:05:2911
1173499143,7cyclictest0-21swapper/822:40:0010
1173499142,7cyclictest0-21swapper/823:30:0010
1173499142,7cyclictest0-21swapper/821:05:0010
1173499142,7cyclictest0-21swapper/819:45:0210
1172799143,6cyclictest0-21swapper/720:55:249
1172299141,8cyclictest0-21swapper/623:20:008
1171399140,3cyclictest0-21swapper/420:55:176
1170999143,7cyclictest0-21swapper/321:31:585
1170999142,8cyclictest0-21swapper/322:20:015
1170999142,8cyclictest0-21swapper/320:00:235
1170999142,7cyclictest0-21swapper/323:25:005
1170999142,7cyclictest0-21swapper/322:00:265
1170999142,7cyclictest0-21swapper/321:10:255
1170399142,6cyclictest0-21swapper/221:00:014
1169999143,7cyclictest0-21swapper/123:50:011
1169999143,7cyclictest0-21swapper/123:50:001
1169999142,8cyclictest0-21swapper/122:25:001
1169999142,8cyclictest0-21swapper/100:20:261
1169999142,7cyclictest0-21swapper/120:50:001
1169999140,8cyclictest0-21swapper/120:40:001
1169499143,7cyclictest0-21swapper/021:20:280
93012130,0sleep50-21swapper/521:50:297
1174399132,7cyclictest0-21swapper/1023:30:242
1174399132,7cyclictest0-21swapper/1019:45:232
1174399130,12cyclictest0-21swapper/1021:49:552
1173899132,7cyclictest0-21swapper/919:50:0111
1173499132,6cyclictest0-21swapper/820:55:0010
1173499131,8cyclictest3166-21kworker/u24:021:55:0010
1172799132,6cyclictest0-21swapper/700:10:009
1172799132,6cyclictest0-21swapper/700:10:009
1172299132,6cyclictest0-21swapper/620:55:008
1171899133,7cyclictest0-21swapper/523:55:017
1171899133,7cyclictest0-21swapper/523:55:007
1170999132,6cyclictest0-21swapper/320:25:005
1170999131,7cyclictest0-21swapper/323:40:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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