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2026-09-13 - 08:01

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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.

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 rack7slot3s.osadl.org (updated Sun Sep 13, 2026 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2702021220,4sleep0101ktimersoftd/023:04:580
1978021010,4sleep219343-21/usr/sbin/munin22:55:422
1852521000,2sleep10-21swapper/120:40:341
1852521000,2sleep10-21swapper/120:40:341
1787899996,64cyclictest0-21swapper/021:45:340
1787899996,64cyclictest0-21swapper/021:45:340
172322940,4sleep30-21swapper/320:35:453
1787899841,58cyclictest21428-21apt-config19:20:210
17878998224,42cyclictest7850irq/56-dwc_otg_22:45:420
1787899791,28cyclictest7147-21cron23:20:200
1787899791,26cyclictest0-21swapper/022:05:340
262422770,2sleep31788199cyclictest00:21:263
1787899772,21cyclictest0-21swapper/019:25:440
1787899753,33cyclictest0-21swapper/021:25:300
1787899752,19cyclictest0-21swapper/000:25:470
1787899752,19cyclictest0-21swapper/000:25:470
1787899741,9cyclictest0-21swapper/019:55:340
17878997415,10cyclictest7750irq/56-dwc_otg21:10:330
57892730,3sleep00-21swapper/023:56:440
17878997315,11cyclictest0-21swapper/023:43:130
1787899723,55cyclictest21306-21ssh22:57:000
1787899722,26cyclictest0-21swapper/000:20:350
1787899721,22cyclictest23715-21/usr/sbin/munin20:55:310
3962710,2sleep20-21swapper/221:52:412
1787899712,19cyclictest0-21swapper/021:57:060
1787899711,12cyclictest0-21swapper/022:25:330
1787899711,12cyclictest0-21swapper/022:25:330
17878997110,14cyclictest18873-21open_inodes21:35:460
46852700,2sleep10-21swapper/122:36:451
17878997049,6cyclictest6976-21ssh22:40:320
17878997024,3cyclictest0-21swapper/023:25:200
1787899702,26cyclictest0-21swapper/021:40:320
17878997017,5cyclictest0-21swapper/000:03:250
1787899701,15cyclictest21020-21sed23:35:480
210022690,3sleep221005-21unixbench-2d23:35:482
17878996923,24cyclictest0-21swapper/023:10:350
1787899691,12cyclictest0-21swapper/022:51:180
1787899682,19cyclictest0-21swapper/000:17:440
17878996815,5cyclictest0-21swapper/022:11:150
17878996812,4cyclictest7850irq/56-dwc_otg_19:20:240
184482670,2sleep30-21swapper/322:15:173
1787899677,15cyclictest0-21swapper/021:15:350
1787899677,15cyclictest0-21swapper/021:15:350
1787899672,38cyclictest6608-21sed20:05:480
1787899672,38cyclictest6608-21sed20:05:480
1787899671,7cyclictest15730-21grep20:30:490
1787899671,25cyclictest0-21swapper/021:31:430
1787899661,20cyclictest0-21swapper/021:20:460
1787899657,13cyclictest0-21swapper/023:27:440
1787899657,13cyclictest0-21swapper/023:27:440
1787899651,18cyclictest0-21swapper/022:22:450
17878996511,12cyclictest0-21swapper/019:15:200
1787899649,4cyclictest18712chrt22:34:100
1787899643,35cyclictest22022-21grep20:50:350
17878996414,12cyclictest16203-21systemd-journal00:13:270
17878996414,12cyclictest16203-21systemd-journal00:13:270
1787899641,16cyclictest0-21swapper/000:37:410
1787899641,15cyclictest0-21swapper/000:31:360
296042630,2sleep20-21swapper/222:28:042
296042630,2sleep20-21swapper/222:28:042
1787899635,17cyclictest0-21swapper/021:05:320
1787899632,22cyclictest0-21swapper/020:41:430
1787899632,22cyclictest0-21swapper/020:41:430
17878996312,12cyclictest0-21swapper/022:19:540
1787899631,20cyclictest0-21swapper/023:08:480
1787899629,10cyclictest0-21swapper/020:25:200
1787899622,24cyclictest0-21swapper/020:00:560
1787899622,22cyclictest0-21swapper/000:09:090
1787899621,4cyclictest0-21swapper/021:51:280
1787899621,25cyclictest21837-21latency_hist20:50:200
1787899621,19cyclictest0-21swapper/022:02:450
1787899614,14cyclictest17569-21sh23:31:490
17878996112,28cyclictest3638-21basename23:55:190
1787899611,15cyclictest4859-21sh22:37:040
230612600,2sleep10-21swapper/123:00:161
1787899602,23cyclictest0-21swapper/020:17:140
1787899601,22cyclictest0-21swapper/019:50:260
1787899597,18cyclictest0-21swapper/020:25:460
1787899591,18cyclictest29680-21ssh23:46:100
1787899589,11cyclictest0-21swapper/020:14:320
1787899582,28cyclictest28804-21latency_hist19:40:200
17878995816,4cyclictest7950irq/56-dwc_otg_19:45:420
17878995815,6cyclictest0-21swapper/019:41:590
1787899581,32cyclictest25365-21aten_rbpower_vo19:30:350
17878995611,9cyclictest26939-21chrt21:03:480
17878995427,6cyclictest17235-21proc_pri20:35:450
301622530,2sleep20-21swapper/223:47:032
1788099493,4cyclictest7850irq/56-dwc_otg_22:15:322
17881994820,6cyclictest14363-21idleruntime-cro22:10:193
17881994716,7cyclictest4907-21fschecks_count00:35:383
1788099477,25cyclictest0-21swapper/219:15:342
17879994713,5cyclictest18840-21ssh22:15:341
17881994620,4cyclictest7240-21sshd22:00:443
17879994619,5cyclictest60-21kswapd022:30:311
176042463,10sleep00-21swapper/019:10:180
1788099457,24cyclictest0-21swapper/223:15:352
1788099457,24cyclictest0-21swapper/219:40:342
1787999445,24cyclictest31673-21/usr/sbin/munin23:10:401
17879994418,11cyclictest28886-21diskmemload21:35:461
1787999437,5cyclictest0-21swapper/123:25:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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