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2026-06-25 - 16:48

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
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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 Thu Jun 25, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991630,7rtkit-daemon0-21swapper/110:42:462
288919910840,45cyclictest0-21swapper/011:55:440
28891991064,12cyclictest21627-21diskmemload09:55:590
2262321020,3sleep2281ktimersoftd/210:14:322
288919910127,58cyclictest0-21swapper/010:39:180
288919910016,15cyclictest0-21swapper/012:03:570
28891999926,57cyclictest0-21swapper/011:19:260
28891999826,52cyclictest0-21swapper/010:14:180
219499980,5rtkit-daemon2193-21rtkit-daemon09:29:191
219499980,5rtkit-daemon2193-21rtkit-daemon09:29:191
2889199977,7cyclictest107550irq/46-eth009:36:410
2889199976,72cyclictest0-21swapper/012:12:350
2889199976,72cyclictest0-21swapper/012:12:350
2889399964,51cyclictest0-21swapper/207:24:372
2889399964,51cyclictest0-21swapper/207:24:372
28891999618,13cyclictest0-21swapper/010:01:550
28894999528,15cyclictest0-21swapper/311:14:203
2889299954,82cyclictest0-21swapper/108:44:551
2889199955,26cyclictest0-21swapper/009:19:040
28891999526,54cyclictest0-21swapper/011:42:310
28891999526,51cyclictest0-21swapper/011:14:160
28891999524,52cyclictest0-21swapper/008:54:250
28891999523,52cyclictest0-21swapper/008:39:380
28891999522,51cyclictest0-21swapper/010:24:280
2889299944,83cyclictest0-21swapper/111:23:581
2889299944,83cyclictest0-21swapper/109:43:001
2889299943,84cyclictest0-21swapper/111:44:551
28891999437,50cyclictest0-21swapper/011:29:540
28891999421,9cyclictest2724-21ssh12:04:220
28891999421,9cyclictest25361-21ssh11:50:320
28891999410,10cyclictest107550irq/46-eth010:09:360
28894999315,13cyclictest0-21swapper/310:24:323
2889299934,81cyclictest0-21swapper/110:19:281
2889299933,82cyclictest0-21swapper/111:14:151
2889199934,23cyclictest25615-21grep11:04:330
2889199933,79cyclictest0-21swapper/009:44:230
28891999321,8cyclictest107550irq/46-eth009:09:220
28891999320,8cyclictest11286-21ssh10:44:290
28891999320,12cyclictest0-21swapper/009:05:070
28891999317,13cyclictest0-21swapper/011:36:300
28891999317,13cyclictest0-21swapper/011:36:300
28891999317,13cyclictest0-21swapper/011:00:230
2889299923,8cyclictest6505-21gltestperf11:24:181
2889299923,11cyclictest0-21swapper/111:54:241
2889199926,80cyclictest0-21swapper/009:53:030
28891999223,12cyclictest16035-21ntp_kernel_pll_09:19:290
28891999217,12cyclictest13626-21sshd07:19:180
28891999217,10cyclictest222681ssh09:29:190
28891999217,10cyclictest222681ssh09:29:190
28891999215,64cyclictest0-21swapper/011:13:070
28894999121,14cyclictest0-21swapper/310:14:303
28894999114,13cyclictest0-21swapper/309:09:213
2889199916,78cyclictest0-21swapper/009:01:230
2889199914,80cyclictest0-21swapper/009:41:050
28891999134,49cyclictest0-21swapper/010:49:500
28891999127,8cyclictest18462-21ssh10:54:310
28891999115,10cyclictest8830-21turbostat11:28:580
2889299907,8cyclictest7150irq/45-ahci10:44:011
2889299904,80cyclictest0-21swapper/109:48:131
2889299903,11cyclictest0-21swapper/109:09:231
28891999027,56cyclictest0-21swapper/007:14:300
28891999021,11cyclictest2758-21munin-node10:34:210
28891999018,11cyclictest0-21swapper/010:04:240
28891999017,12cyclictest0-21swapper/008:50:350
28891999017,12cyclictest0-21swapper/008:50:350
2889499894,30cyclictest0-21swapper/308:59:053
2889499894,28cyclictest0-21swapper/309:34:023
2889499894,28cyclictest0-21swapper/309:34:023
2889499893,25cyclictest30292-21aten_r1power_fr11:59:083
2889299894,79cyclictest0-21swapper/111:06:001
2889299894,78cyclictest0-21swapper/110:33:341
2889299893,78cyclictest0-21swapper/110:04:061
2889199895,77cyclictest0-21swapper/009:28:460
2889199894,65cyclictest0-21swapper/010:19:130
2889199894,27cyclictest0-21swapper/010:34:000
2889199894,24cyclictest0-21swapper/011:44:130
2889199893,24cyclictest0-21swapper/008:44:200
2889499884,77cyclictest0-21swapper/309:59:243
28894998827,11cyclictest0-21swapper/311:00:183
28894998822,12cyclictest0-21swapper/308:11:163
28894998822,12cyclictest0-21swapper/308:11:163
2889299884,51cyclictest0-21swapper/110:00:551
2889299883,11cyclictest0-21swapper/110:51:461
2889299883,11cyclictest0-21swapper/109:04:281
28892998813,51cyclictest0-21swapper/108:53:061
28892998813,51cyclictest0-21swapper/108:53:061
2889199884,77cyclictest0-21swapper/008:34:330
2889199884,77cyclictest0-21swapper/008:04:060
2889199884,25cyclictest0-21swapper/008:14:380
2889499873,27cyclictest0-21swapper/311:05:033
28894998724,14cyclictest0-21swapper/310:23:273
2889299874,76cyclictest0-21swapper/111:38:371
2889299874,76cyclictest0-21swapper/111:38:371
2889299873,8cyclictest21627-21diskmemload11:29:101
2889299873,10cyclictest1227-21runrttasks10:26:041
28891998725,57cyclictest0-21swapper/008:29:210
28891998714,13cyclictest0-21swapper/007:49:200
28894998631,9cyclictest21182-21unixbench_multi08:39:393
28894998626,8cyclictest2724-21ssh12:04:223
28894998621,13cyclictest0-21swapper/311:56:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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