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2025-12-17 - 09:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Wed Dec 17, 2025 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2789621230,6sleep027898-21grep19:41:560
2345121130,9sleep20-21swapper/200:06:122
926799974,75cyclictest0-21swapper/022:36:400
107112900,6sleep310710-21awk21:21:473
9267998816,49cyclictest0-21swapper/022:41:270
926799874,65cyclictest0-21swapper/021:41:450
926799864,66cyclictest0-21swapper/022:56:290
926799864,59cyclictest0-21swapper/022:31:310
926799863,67cyclictest0-21swapper/020:41:200
926799854,74cyclictest0-21swapper/021:22:000
926799854,66cyclictest0-21swapper/020:51:470
926799854,64cyclictest0-21swapper/000:23:430
9267998515,55cyclictest0-21swapper/023:01:310
9267998512,9cyclictest121850irq/46-eth019:21:500
926799844,72cyclictest0-21swapper/023:36:350
926799844,72cyclictest0-21swapper/023:36:350
926799844,64cyclictest0-21swapper/022:16:340
926799843,66cyclictest0-21swapper/023:06:430
926799833,22cyclictest0-21swapper/000:03:400
9267998316,8cyclictest28585-21munin-node19:46:490
9267998315,8cyclictest1419-21runrttasks22:28:380
926799824,14cyclictest0-21swapper/019:36:550
926799823,57cyclictest0-21swapper/020:12:040
926799823,21cyclictest0-21swapper/020:48:080
926799814,56cyclictest0-21swapper/020:16:390
310182810,5sleep041ktimersoftd/022:06:290
926799803,56cyclictest0-21swapper/020:01:380
926799803,19cyclictest0-21swapper/022:05:140
9267998023,51cyclictest1419-21runrttasks23:58:500
9267998021,52cyclictest12700-21grep19:11:420
9267998020,53cyclictest14776-21grep20:21:540
9267998018,7cyclictest1287-21snmpd21:28:150
926799793,66cyclictest7706-21cut21:16:370
9267997915,49cyclictest0-21swapper/023:46:260
9267997914,8cyclictest25894-21sadc21:56:170
926799784,67cyclictest0-21swapper/021:01:410
926799784,14cyclictest0-21swapper/023:41:320
926799784,13cyclictest0-21swapper/000:11:390
926799784,12cyclictest0-21swapper/019:06:500
926799783,68cyclictest6661-21grep20:06:420
926799783,68cyclictest6661-21grep20:06:420
926799783,60cyclictest0-21swapper/000:16:410
926799783,60cyclictest0-21swapper/000:16:410
9267997829,44cyclictest5758-21needreboot23:26:390
9267997827,45cyclictest22869-21tr20:41:330
9267997827,45cyclictest22869-21tr20:41:330
9267997825,47cyclictest15743-21cpuspeed_turbos20:26:350
9267997821,50cyclictest20121-21munin-node22:51:440
9267997821,50cyclictest20121-21munin-node22:51:440
926799774,66cyclictest0-21swapper/020:31:480
926799774,13cyclictest0-21swapper/000:26:290
926799773,68cyclictest0-21swapper/020:59:250
926799773,23cyclictest0-21swapper/022:11:430
926799773,23cyclictest0-21swapper/022:11:430
9267997726,45cyclictest1419-21runrttasks19:28:390
9267997726,45cyclictest1419-21runrttasks19:28:390
9267997722,49cyclictest1419-21runrttasks23:13:490
9267997711,12cyclictest0-21swapper/019:32:540
926799766,8cyclictest214181telnet21:46:300
926799764,15cyclictest0-21swapper/000:06:340
926799764,12cyclictest0-21swapper/022:46:490
9267997625,44cyclictest31310-21cpuspeed_turbos19:51:350
9267997623,48cyclictest1419-21runrttasks21:59:050
9267997620,50cyclictest17265-21fschecks_time23:51:320
926799754,15cyclictest0-21swapper/021:36:180
926799754,15cyclictest0-21swapper/021:36:180
926799753,65cyclictest14261-21munin-node19:16:470
926799744,14cyclictest0-21swapper/021:36:510
926799744,13cyclictest0-21swapper/022:21:490
926799744,13cyclictest0-21swapper/019:06:230
926799743,64cyclictest0-21swapper/023:31:340
9267997421,48cyclictest1419-21runrttasks00:35:370
9267997413,8cyclictest1419-21runrttasks23:17:280
108812740,4sleep118-21rcuc/123:36:451
108812740,4sleep118-21rcuc/123:36:451
926799734,63cyclictest0-21swapper/023:21:310
926799734,27cyclictest0-21swapper/021:11:360
9267997314,8cyclictest1287-21snmpd21:08:110
9267997118,7cyclictest1141-21cpuspeed19:56:340
248599710,8rtkit-daemon0-21swapper/019:06:581
248599680,7rtkit-daemon0-21swapper/019:24:581
2142526713,47sleep30-21swapper/319:31:373
248599650,8rtkit-daemon0-21swapper/019:16:581
248599630,9rtkit-daemon0-21swapper/019:13:431
248599620,8rtkit-daemon0-21swapper/019:26:281
248599620,8rtkit-daemon0-21swapper/019:26:281
6512613,49sleep20-21swapper/219:56:222
9269995943,10cyclictest26402-21cpuspeed_turbos00:11:242
926899594,37cyclictest0-21swapper/100:16:391
926899594,37cyclictest0-21swapper/100:16:391
9268995917,23cyclictest25497-21unixbench_multi19:36:561
926899584,20cyclictest0-21swapper/120:26:331
268562582,18sleep20-21swapper/220:48:052
9268995716,14cyclictest0-21swapper/123:41:251
293052572,11sleep10-21swapper/119:46:421
115032573,12sleep20-21swapper/223:41:142
115032573,12sleep20-21swapper/223:41:142
926899564,32cyclictest0-21swapper/122:26:271
9268995622,13cyclictest0-21swapper/121:41:191
297152563,9sleep129810-21sh23:11:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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