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2026-07-25 - 01:46

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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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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 rack9slot4s (updated Fri Jul 24, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
197669912661237,25cyclictest25339-21wc11:55:011
197659911091079,26cyclictest0-21swapper/007:25:490
197669910761067,6cyclictest20927-21smartctl07:25:281
195702773727,31sleep10-21swapper/107:23:311
195172602502,27sleep00-21swapper/007:23:000
19765992431,236cyclictest0-21swapper/011:55:010
60882870,7sleep01976599cyclictest08:10:240
3412630,2sleep0338-21grep12:15:000
296402480,6sleep11976699cyclictest12:05:181
19765994114,9cyclictest10564-21iostat12:40:190
19765994012,8cyclictest27111-21python09:05:280
19765993914,7cyclictest2661-21df_inode12:20:150
19765993913,8cyclictest17383-21memory08:40:220
19765993913,8cyclictest12069-21python08:25:290
19765993813,7cyclictest5283-21iostat11:00:190
19765993813,15cyclictest0-21swapper/008:24:030
19766993714,6cyclictest22-21ksoftirqd/110:56:121
1976599371,6cyclictest22612-21uname10:20:210
19765993713,7cyclictest720-21df_inode12:15:140
19765993713,15cyclictest0-21swapper/010:05:400
19765993713,15cyclictest0-21swapper/009:03:390
19765993713,14cyclictest0-21swapper/011:19:180
19765993712,8cyclictest9105-21diskstats09:45:140
19765993712,8cyclictest20694-21irqstats10:15:210
1976599371,21cyclictest27935-21grep10:35:150
19765993711,9cyclictest16286-21grep11:30:150
19765993710,4cyclictest0-21swapper/010:40:250
1976599367,25cyclictest7192-21kernelversion11:05:200
1976599362,12cyclictest0-21swapper/008:04:100
1976599361,6cyclictest5207-21ps12:25:270
19765993613,14cyclictest0-21swapper/011:25:240
19765993613,14cyclictest0-21swapper/007:37:170
19765993612,14cyclictest0-21swapper/008:38:140
19765993611,6cyclictest15541-21cron12:55:000
19765993610,5cyclictest7136-21tr09:40:130
19766993511,7cyclictest11606-21cat08:25:201
19765993513,13cyclictest0-21swapper/009:25:420
19765993513,13cyclictest0-21swapper/008:15:480
19765993513,13cyclictest0-21swapper/007:49:380
19765993512,7cyclictest1828-21python10:50:290
19765993512,14cyclictest0-21swapper/009:57:150
1976699348,6cyclictest11565-21gdbus08:54:091
19765993413,12cyclictest0-21swapper/012:07:310
19765993413,12cyclictest0-21swapper/009:22:180
19765993412,6cyclictest3288-21hddtemp_smartct10:55:180
1976599341,13cyclictest0-21swapper/011:15:010
1976599341,12cyclictest3273-21cpu09:30:120
1976599341,12cyclictest29061-21cat09:10:280
96852331,4sleep19759-21iostat08:20:181
64222331,28sleep12291-21irqbalance09:36:371
288772331,5sleep128881-21watchsnmpd12:04:011
1976699331,28cyclictest2221-21cron10:30:001
1976599332,12cyclictest0-21swapper/010:25:120
1976599331,6cyclictest20704-21cstates08:50:140
19765993314,5cyclictest0-21swapper/009:36:160
19765993313,11cyclictest0-21swapper/012:33:520
1976599331,17cyclictest30617-21kernelversion07:50:220
1976599331,17cyclictest30617-21kernelversion07:50:220
1976599331,13cyclictest29013-21latency_hist12:05:010
1976599331,13cyclictest0-21swapper/007:33:100
70622320,9sleep11976699cyclictest11:05:161
1976699325,6cyclictest11565-21gdbus09:44:421
19766993222,7cyclictest20364-21ls10:15:121
19765993214,5cyclictest0-21swapper/007:41:250
19765993213,6cyclictest0-21swapper/011:57:510
19765993213,6cyclictest0-21swapper/010:03:200
19765993213,6cyclictest0-21swapper/008:57:450
19765993213,6cyclictest0-21swapper/008:48:150
19765993213,5cyclictest0-21swapper/012:47:070
19765993213,5cyclictest0-21swapper/011:46:020
19765993213,5cyclictest0-21swapper/011:37:360
19765993213,5cyclictest0-21swapper/010:49:450
19765993213,5cyclictest0-21swapper/010:10:410
19765993213,5cyclictest0-21swapper/009:53:500
1976599321,14cyclictest30364-21/usr/sbin/munin09:15:190
1976599321,12cyclictest0-21swapper/012:37:260
232822311,5sleep10-21swapper/111:49:281
1976699317,5cyclictest40250irq/92-i91509:24:281
1976699314,6cyclictest0-21swapper/112:12:541
19766993119,8cyclictest10281-21/usr/sbin/munin12:40:141
1976699311,8cyclictest25180-21awk09:00:271
1976699311,8cyclictest19892-21taskset08:45:551
19765993113,5cyclictest0-21swapper/011:41:000
19765993113,5cyclictest0-21swapper/011:20:560
19765993113,5cyclictest0-21swapper/010:30:560
19765993113,5cyclictest0-21swapper/008:30:090
19765993113,5cyclictest0-21swapper/008:07:010
19765993113,5cyclictest0-21swapper/007:57:220
1976699309,5cyclictest40250irq/92-i91507:52:101
1976699309,5cyclictest40250irq/92-i91507:52:091
1976699309,5cyclictest40250irq/92-i91507:38:001
1976699302,8cyclictest1828-21python10:50:281
19766993017,7cyclictest16934-21iostat_ios10:05:201
62142291,5sleep10-21swapper/111:03:021
1976699299,5cyclictest40250irq/92-i91512:45:211
1976699298,4cyclictest40250irq/92-i91512:36:441
1976699297,5cyclictest40250irq/92-i91509:46:521
1976699297,5cyclictest40250irq/92-i91508:59:541
1976699297,5cyclictest40250irq/92-i91508:15:281
1976699296,4cyclictest40250irq/92-i91510:40:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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