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2026-05-14 - 15:30

OSADL QA Farm on Real-time of Mainline Linux

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

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 rackcslot7s.osadl.org (updated Thu May 14, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
285643121210,3sleep30-21swapper/308:25:223
139099850,54rtkit-daemon0-21swapper/207:09:002
282813326444,14sleep00-21swapper/007:09:450
282680326241,14sleep30-21swapper/307:05:143
282780926140,14sleep10-21swapper/107:05:311
29167932600,3sleep32916798-21cpuspeed_turbos11:15:123
29238112540,3sleep10-21swapper/111:35:111
28940072510,3sleep10-21swapper/110:10:221
139099280,19rtkit-daemon0-21swapper/007:20:180
29270432270,3chrt0-21swapper/111:45:011
2828290992616,4cyclictest26-21ksoftirqd/107:23:311
28529632250,11sleep342-21ksoftirqd/308:15:183
282829999258,3cyclictest42-21ksoftirqd/310:09:553
282829999258,3cyclictest42-21ksoftirqd/310:09:543
282829399259,7cyclictest34-21ksoftirqd/211:00:182
282829399257,8cyclictest34-21ksoftirqd/210:40:012
282829099253,9cyclictest141rcu_preempt10:25:201
282828899251,9cyclictest2923554-21munin-run11:35:000
28658512240,8sleep234-21ksoftirqd/208:50:232
2828299992420,3cyclictest411rcuc/309:01:363
282829399244,6cyclictest2881981-21taskset09:38:512
282829399243,7cyclictest34-21ksoftirqd/209:46:112
28485972230,4sleep3411rcuc/308:05:013
2828299992315,6cyclictest2834196-21cron07:24:593
2828299992314,7cyclictest2870541-21memory09:05:173
282829399234,7cyclictest34-21ksoftirqd/211:19:472
282829399233,6cyclictest34-21ksoftirqd/210:40:212
282829399233,3cyclictest34-21ksoftirqd/207:25:112
2828293992316,5cyclictest2883807-21cron09:45:012
282829099239,4cyclictest26-21ksoftirqd/112:20:161
28763172220,12sleep00-21swapper/009:21:140
2828299992220,1cyclictest0-21swapper/307:55:303
2828299992219,2cyclictest3056-21PK-Backend12:33:393
2828299992219,2cyclictest3056-21PK-Backend11:31:193
2828299992218,3cyclictest411rcuc/311:06:213
2828293992220,1cyclictest0-21swapper/212:20:082
2828293992220,1cyclictest0-21swapper/211:59:062
2828293992220,1cyclictest0-21swapper/208:43:172
2828293992218,3cyclictest331rcuc/210:09:282
2828293992218,3cyclictest331rcuc/210:09:282
282829099227,2cyclictest141rcu_preempt11:35:001
2828290992211,10cyclictest26-21ksoftirqd/111:10:011
2828290992210,4cyclictest26-21ksoftirqd/110:05:011
2828290992210,4cyclictest26-21ksoftirqd/110:05:001
2828288992220,1cyclictest3056-21PK-Backend11:38:130
2828288992220,1cyclictest0-21swapper/010:58:400
2828288992220,1cyclictest0-21swapper/010:53:530
2828288992220,1cyclictest0-21swapper/010:39:320
2828288992220,1cyclictest0-21swapper/010:32:430
2828288992220,1cyclictest0-21swapper/009:56:070
2828288992220,1cyclictest0-21swapper/009:11:590
2828288992220,1cyclictest0-21swapper/008:06:570
2828288992220,1cyclictest0-21swapper/007:31:010
2828288992219,2cyclictest3056-21PK-Backend08:54:080
282828899220,21cyclictest3056-21PK-Backend10:44:190
282828899220,21cyclictest0-21swapper/009:41:400
282828899220,21cyclictest0-21swapper/007:50:140
282828899220,20cyclictest0-21swapper/009:46:470
139099220,15rtkit-daemon3056-21PK-Backend11:23:201
139099220,14rtkit-daemon0-21swapper/111:26:361
29023582210,2sleep13056-21PK-Backend10:35:161
28504652210,8sleep0131ksoftirqd/008:10:100
282829999212,3cyclictest42-21ksoftirqd/310:10:193
2828299992119,1cyclictest3056-21PK-Backend10:22:593
2828299992119,1cyclictest0-21swapper/311:52:013
2828299992119,1cyclictest0-21swapper/310:41:103
2828299992118,2cyclictest411rcuc/310:17:013
2828299992118,2cyclictest3056-21PK-Backend10:28:333
2828299992117,3cyclictest411rcuc/307:55:003
2828299992117,3cyclictest411rcuc/307:25:033
282829999211,17cyclictest2878021-21python309:25:233
282829999210,20cyclictest3056-21PK-Backend10:55:303
282829999210,20cyclictest0-21swapper/312:23:443
282829999210,20cyclictest0-21swapper/311:20:593
282829399218,3cyclictest34-21ksoftirqd/211:05:282
2828293992119,1cyclictest0-21swapper/212:27:442
2828293992119,1cyclictest0-21swapper/211:53:312
2828293992119,1cyclictest0-21swapper/210:59:382
2828293992119,1cyclictest0-21swapper/210:48:492
2828293992119,1cyclictest0-21swapper/210:32:132
2828293992119,1cyclictest0-21swapper/210:25:242
2828293992119,1cyclictest0-21swapper/210:16:032
2828293992119,1cyclictest0-21swapper/210:14:492
2828293992119,1cyclictest0-21swapper/209:57:112
2828293992119,1cyclictest0-21swapper/209:52:242
2828293992119,1cyclictest0-21swapper/209:26:422
2828293992119,1cyclictest0-21swapper/209:06:022
2828293992119,1cyclictest0-21swapper/208:00:312
2828293992119,1cyclictest0-21swapper/207:43:012
2828293992119,1cyclictest0-21swapper/207:38:012
282829399211,7cyclictest2896861-21diskstats10:20:142
2828293992117,3cyclictest0-21swapper/209:04:592
2828293992112,7cyclictest883-21dbus-daemon10:53:322
282829399210,20cyclictest0-21swapper/212:37:382
282829399210,20cyclictest0-21swapper/212:04:402
282829399210,20cyclictest0-21swapper/212:04:392
282829099219,4cyclictest26-21ksoftirqd/108:15:291
282829099217,11cyclictest883-21dbus-daemon10:53:351
2828290992119,1cyclictest0-21swapper/110:01:351
282829099210,20cyclictest3056-21PK-Backend11:47:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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