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2025-12-04 - 01:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Wed Dec 03, 2025 12:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
130872921390,2sleep3586-21kworker/3:2+events08:31:113
1226668997263,7cyclictest1180255-21kworker/u8:3+flush-8:007:26:450
1226668996961,7cyclictest1476887-21kworker/u8:1+flush-8:012:11:210
1226670996761,4cyclictest1522444-21kworker/u8:2+flush-8:012:36:241
1226668996655,8cyclictest1243398-21latency_hist07:25:010
1226670996156,3cyclictest1476887-21kworker/u8:1+events_unbound11:51:111
1226670996151,4cyclictest1457848-21kworker/u8:0+flush-8:011:11:231
1226670996054,5cyclictest1268449-21kworker/u8:3+events_unbound09:11:181
1226670996053,5cyclictest1313777-21kworker/u8:0+events_unbound09:16:171
1226670995955,3cyclictest1180255-21kworker/u8:3+events_unbound07:16:171
1226670995954,4cyclictest1253184-21kworker/u8:2+flush-8:008:01:271
1226670995953,5cyclictest1476887-21kworker/u8:1+events_unbound11:46:261
1226670995953,5cyclictest1412847-21kworker/u8:1+events_unbound10:26:191
1226670995953,5cyclictest1397796-21kworker/u8:2+flush-8:010:56:201
1226668995952,5cyclictest1262905-21kworker/u8:0+flush-8:007:56:200
1226673995850,5cyclictest282-21systemd-journal08:40:012
1226668995848,6cyclictest1551856-21latency_hist12:35:010
12887412570,4chrt0-21swapper/208:11:072
1226670995752,4cyclictest1476887-21kworker/u8:1+events_unbound12:11:121
1226670995752,4cyclictest1253184-21kworker/u8:2+events_unbound07:36:201
1226670995750,5cyclictest1180255-21kworker/u8:3+flush-8:007:11:191
1226670995649,6cyclictest1313777-21kworker/u8:0+events_unbound08:41:171
1226670995649,5cyclictest1507540-21kworker/u8:0+flush-8:012:16:181
1226670995550,4cyclictest1378206-21kworker/u8:4+flush-8:009:41:181
1226670995550,4cyclictest1268449-21kworker/u8:3+events_unbound10:06:191
1226670995550,3cyclictest1268449-21kworker/u8:3+flush-8:009:21:191
1226670995548,5cyclictest1476887-21kworker/u8:1+events_unbound11:31:091
1226668995549,4cyclictest1253184-21kworker/u8:2+flush-8:007:46:180
1226670995448,5cyclictest1313777-21kworker/u8:0+events_unbound08:56:291
1226670995448,4cyclictest1397796-21kworker/u8:2+flush-8:011:16:161
1226670995448,4cyclictest1397796-21kworker/u8:2+flush-8:011:16:161
1226670995447,5cyclictest1253184-21kworker/u8:2+flush-8:008:06:201
1226668995448,4cyclictest1313777-21kworker/u8:0+flush-8:008:36:210
1226673995347,4cyclictest1457848-21kworker/u8:0+flush-8:011:01:202
1226670995349,3cyclictest1313777-21kworker/u8:0+events_unbound08:46:221
1226670995348,3cyclictest1298399-21kworker/u8:4+events_unbound08:31:171
1226670995347,5cyclictest1397796-21kworker/u8:2+events_unbound10:41:271
1226668995347,4cyclictest1268449-21kworker/u8:3+events_unbound09:21:170
1226668995345,6cyclictest1253184-21kworker/u8:2+flush-8:007:51:170
1226670995246,5cyclictest1471598-21kworker/u8:3+flush-8:011:26:271
1226670995246,5cyclictest1471598-21kworker/u8:3+flush-8:011:26:271
1226670995246,5cyclictest1268449-21kworker/u8:3+flush-8:009:06:081
1226670995246,4cyclictest1522444-21kworker/u8:2+events_unbound12:31:081
1226670995246,4cyclictest1412847-21kworker/u8:1+events_unbound10:16:251
1226670995246,4cyclictest1313777-21kworker/u8:0+events_unbound09:01:121
1226668995247,4cyclictest1298399-21kworker/u8:4+flush-8:008:21:250
1226668995246,4cyclictest1378206-21kworker/u8:4+flush-8:009:46:260
1226673995145,4cyclictest1497115-21kworker/u8:2+flush-8:011:41:222
1226670995146,4cyclictest1397796-21kworker/u8:2+events_unbound10:46:211
1226670995146,3cyclictest1507540-21kworker/u8:0+events_unbound12:01:241
1226670995145,5cyclictest1397796-21kworker/u8:2+events_unbound10:36:271
1226668995139,10cyclictest1412847-21kworker/u8:1+flush-8:010:31:210
1226670995046,3cyclictest1412847-21kworker/u8:1+events_unbound10:21:191
1226670995044,5cyclictest1537293-21kworker/u8:3+flush-8:012:21:191
1226670995044,5cyclictest1412847-21kworker/u8:1+events_unbound10:51:221
1226670995044,5cyclictest1268449-21kworker/u8:3+flush-8:008:36:191
1226670995043,5cyclictest1457848-21kworker/u8:0+events_unbound11:01:221
1226668995045,4cyclictest1507540-21kworker/u8:0+flush-8:012:16:210
1226670994942,5cyclictest1476887-21kworker/u8:1+flush-8:012:06:221
1226668994944,3cyclictest1268449-21kworker/u8:3+events_unbound09:06:210
1226668994942,5cyclictest1507540-21kworker/u8:0+flush-8:011:56:180
1226668994939,8cyclictest282-21systemd-journal10:30:010
1226670994844,3cyclictest1283491-21kworker/u8:1+events_unbound08:11:201
1226670994842,5cyclictest1372983-21kworker/u8:0+events_unbound09:36:111
1226670994837,9cyclictest282-21systemd-journal08:00:001
1226668994843,3cyclictest1397796-21kworker/u8:2+flush-8:010:51:180
1226673994736,9cyclictest282-21systemd-journal08:42:162
1226670994742,4cyclictest1253184-21kworker/u8:2+flush-8:008:51:111
1226670994742,3cyclictest1476887-21kworker/u8:1+flush-8:012:26:211
1226670994741,5cyclictest1457848-21kworker/u8:0+events_unbound11:36:181
1226670994741,5cyclictest1233746-21kworker/u8:0+events_unbound07:21:081
1226668994743,3cyclictest1372983-21kworker/u8:0+flush-8:009:36:260
1226668994742,4cyclictest1233746-21kworker/u8:0+events_unbound07:17:000
1226670994640,4cyclictest1293382-21kworker/u8:0+flush-8:008:21:141
1226668994642,3cyclictest1537293-21kworker/u8:3+flush-8:012:21:250
1226668994641,3cyclictest1442516-21kworker/u8:3+flush-8:010:46:150
1226668994640,4cyclictest1497115-21kworker/u8:2+events_unbound11:41:180
1226668994636,8cyclictest1319080-21diskstats08:41:070
1226673994539,4cyclictest1476887-21kworker/u8:1+flush-8:011:51:182
1226670994540,3cyclictest1293382-21kworker/u8:0+events_unbound08:26:241
1226668994534,4cyclictest1268449-21kworker/u8:3+flush-8:008:16:160
1226670994440,3cyclictest1268449-21kworker/u8:3+events_unbound09:51:091
1226668994440,3cyclictest1333600-21kworker/u8:1+flush-8:009:26:090
1226668994439,4cyclictest1397796-21kworker/u8:2+flush-8:011:16:210
1226668994439,4cyclictest1397796-21kworker/u8:2+flush-8:011:16:210
1226668994438,5cyclictest1313777-21kworker/u8:0+flush-8:008:46:180
1226668994438,4cyclictest1397796-21kworker/u8:2+flush-8:010:11:200
1226668994437,5cyclictest1412847-21kworker/u8:1+events_unbound10:41:190
1226668994435,6cyclictest1522181-21latency_hist12:05:010
1226670994337,4cyclictest1507540-21kworker/u8:0+events_unbound11:56:111
1226670994337,4cyclictest1457848-21kworker/u8:0+events_unbound11:06:211
1226670994336,5cyclictest282-21systemd-journal10:35:011
1226670994336,5cyclictest1333600-21kworker/u8:1+flush-8:009:31:241
1226668994338,3cyclictest1457848-21kworker/u8:0+flush-8:011:06:160
1226668994338,3cyclictest1412847-21kworker/u8:1+flush-8:010:21:170
1226668994338,3cyclictest1378206-21kworker/u8:4+events_unbound09:45:000
1226670994238,3cyclictest1246138-21kworker/u8:1+flush-8:007:31:241
1226668994233,7cyclictest1308892-21diskstats08:31:120
1226668994232,8cyclictest282-21systemd-journal12:40:000
1226670994136,4cyclictest1378206-21kworker/u8:4+events_unbound09:46:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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