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2026-04-21 - 16:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, slot #5

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 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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackaslot5s.osadl.org (updated Tue Apr 21, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811050,0rcu_preempt19-21ksoftirqd/111:48:331
811030,0rcu_preempt19-21ksoftirqd/112:19:021
81980,0rcu_preempt19-21ksoftirqd/112:28:401
81970,0rcu_preempt0-21swapper/110:13:031
81960,0rcu_preempt0-21swapper/110:16:031
81940,0rcu_preempt851-21rngd11:26:451
81940,0rcu_preempt19-21ksoftirqd/111:15:291
81940,0rcu_preempt19-21ksoftirqd/109:42:521
81930,0rcu_preempt54-21kswapd011:47:071
81930,0rcu_preempt19-21ksoftirqd/111:58:291
81930,0rcu_preempt19-21ksoftirqd/111:28:441
81900,0rcu_preempt54-21kswapd010:22:041
81900,0rcu_preempt19-21ksoftirqd/112:33:591
81900,0rcu_preempt19-21ksoftirqd/109:15:301
81880,0rcu_preempt19-21ksoftirqd/109:35:021
81870,0rcu_preempt0-21swapper/109:30:381
81860,0rcu_preempt19-21ksoftirqd/110:38:471
81860,0rcu_preempt19-21ksoftirqd/108:33:471
81860,0rcu_preempt0-21swapper/112:26:061
81850,0rcu_preempt19-21ksoftirqd/111:11:491
81840,0rcu_preempt5826-21192.168.115.60-09:54:561
81840,0rcu_preempt19-21ksoftirqd/110:58:061
81840,0rcu_preempt0-21swapper/110:32:121
81830,0rcu_preempt851-21rngd08:06:581
81830,0rcu_preempt19-21ksoftirqd/112:11:021
81830,0rcu_preempt19-21ksoftirqd/111:36:201
81820,0rcu_preempt19-21ksoftirqd/107:28:571
81810,0rcu_preempt19-21ksoftirqd/109:58:481
81810,0rcu_preempt19-21ksoftirqd/108:19:171
81800,0rcu_preempt19-21ksoftirqd/112:18:231
81790,0rcu_preempt19-21ksoftirqd/111:39:271
81790,0rcu_preempt19-21ksoftirqd/108:13:591
81740,0rcu_preempt9113-21kworker/1:209:44:331
81740,0rcu_preempt19-21ksoftirqd/110:26:181
81730,0rcu_preempt25727-21fschecks_count10:48:421
81730,0rcu_preempt19-21ksoftirqd/111:03:371
81720,0rcu_preempt19-21ksoftirqd/110:07:591
81700,0rcu_preempt19-21ksoftirqd/109:23:471
81680,0rcu_preempt19-21ksoftirqd/112:03:291
81680,0rcu_preempt19-21ksoftirqd/110:38:031
81680,0rcu_preempt19-21ksoftirqd/109:19:581
81680,0rcu_preempt0-21swapper/111:22:181
81670,0rcu_preempt19-21ksoftirqd/109:51:551
81670,0rcu_preempt19-21ksoftirqd/108:25:241
81660,0rcu_preempt19-21ksoftirqd/111:00:261
81650,0rcu_preempt19-21ksoftirqd/110:43:351
81650,0rcu_preempt19-21ksoftirqd/108:02:001
81640,0rcu_preempt19-21ksoftirqd/108:28:431
81640,0rcu_preempt19-21ksoftirqd/107:57:561
81640,0rcu_preempt19-21ksoftirqd/107:57:561
81630,0rcu_preempt19-21ksoftirqd/111:56:521
81620,0rcu_preempt3-21ksoftirqd/011:58:520
81620,0rcu_preempt19-21ksoftirqd/107:14:251
81610,0rcu_preempt21129-21apt-get08:58:361
81600,0rcu_preempt3-21ksoftirqd/009:43:480
81600,0rcu_preempt19-21ksoftirqd/108:48:351
81600,0rcu_preempt19-21ksoftirqd/108:38:471
81600,0rcu_preempt19-21ksoftirqd/108:09:421
81580,0rcu_preempt19-21ksoftirqd/107:48:421
81570,0rcu_preempt3-21ksoftirqd/010:43:240
81570,0rcu_preempt19-21ksoftirqd/107:08:241
1727499571,0cyclictest0-21swapper/011:40:430
81560,0rcu_preempt3-21ksoftirqd/011:43:460
81560,0rcu_preempt19-21ksoftirqd/109:08:531
81560,0rcu_preempt19-21ksoftirqd/109:03:431
81550,0rcu_preempt3-21ksoftirqd/009:38:410
81540,0rcu_preempt3-21ksoftirqd/012:08:470
81540,0rcu_preempt19-21ksoftirqd/108:53:361
81520,0rcu_preempt3-21ksoftirqd/012:33:240
81500,0rcu_preempt29798-21timerwakeupswit07:43:590
81500,0rcu_preempt19-21ksoftirqd/108:43:371
81490,0rcu_preempt3-21ksoftirqd/010:48:460
81490,0rcu_preempt26416-21kworker/0:011:56:390
17275994931,0cyclictest17588-21munin-node1
81480,0rcu_preempt6124-21kworker/0:110:02:060
81480,0rcu_preempt3-21ksoftirqd/012:20:530
81480,0rcu_preempt3-21ksoftirqd/012:08:230
81480,0rcu_preempt3-21ksoftirqd/011:48:420
81480,0rcu_preempt3-21ksoftirqd/009:38:110
81480,0rcu_preempt19-21ksoftirqd/107:39:031
81470,0rcu_preempt3-21ksoftirqd/011:20:240
81470,0rcu_preempt3-21ksoftirqd/011:02:550
81470,0rcu_preempt3-21ksoftirqd/008:13:240
81470,0rcu_preempt3-21ksoftirqd/007:58:370
81470,0rcu_preempt31303-21kworker/0:112:33:500
17275994729,0cyclictest20557-21ping07:18:341
10050470,0irq/346-48484000-21swapper/010:32:530
81460,0rcu_preempt3-21ksoftirqd/011:03:400
81460,0rcu_preempt3-21ksoftirqd/010:45:580
81460,0rcu_preempt3-21ksoftirqd/009:03:460
81450,0rcu_preempt3-21ksoftirqd/012:25:250
81450,0rcu_preempt3-21ksoftirqd/012:14:500
81450,0rcu_preempt3-21ksoftirqd/011:26:490
81450,0rcu_preempt3-21ksoftirqd/011:13:370
81450,0rcu_preempt3-21ksoftirqd/011:08:520
81450,0rcu_preempt3-21ksoftirqd/010:53:450
81450,0rcu_preempt3-21ksoftirqd/010:33:490
81450,0rcu_preempt3-21ksoftirqd/010:20:380
81450,0rcu_preempt3-21ksoftirqd/010:18:170
81450,0rcu_preempt3-21ksoftirqd/010:08:380
81450,0rcu_preempt3-21ksoftirqd/009:28:240
81450,0rcu_preempt3-21ksoftirqd/007:28:550
81450,0rcu_preempt26517-21timerwakeupswit07:34:000
81450,0rcu_preempt26271-21kworker/u4:010:23:530
81450,0rcu_preempt19-21ksoftirqd/107:36:341
81450,0rcu_preempt19-21ksoftirqd/107:25:031
81440,0rcu_preempt6124-21kworker/0:110:06:300
81440,0rcu_preempt32745-21kworker/0:209:53:370
81440,0rcu_preempt3-21ksoftirqd/008:48:240
81440,0rcu_preempt3-21ksoftirqd/007:13:240
81440,0rcu_preempt3-21ksoftirqd/007:08:210
81440,0rcu_preempt19-21ksoftirqd/107:43:461
81430,0rcu_preempt3-21ksoftirqd/011:30:140
81430,0rcu_preempt3-21ksoftirqd/009:53:220
81430,0rcu_preempt3-21ksoftirqd/009:30:080
81430,0rcu_preempt3-21ksoftirqd/007:18:560
81430,0rcu_preempt29410-21apt-get09:13:360
81430,0rcu_preempt0-21swapper/009:21:270
81420,0rcu_preempt4689-21apt-get11:33:370
81420,0rcu_preempt3-21ksoftirqd/009:10:180
81420,0rcu_preempt3-21ksoftirqd/008:28:540
81410,0rcu_preempt3-21ksoftirqd/008:18:410
1727499418,0cyclictest591050kworker/0:1H08:13:430
81400,0rcu_preempt3-21ksoftirqd/008:03:400
81400,0rcu_preempt30015-21kworker/0:207:55:320
81400,0rcu_preempt30015-21kworker/0:207:55:320
9950390,0irq/345-484840032023-21runrttasks07:53:240
81390,0rcu_preempt3-21ksoftirqd/008:38:420
81390,0rcu_preempt3-21ksoftirqd/007:38:590
81390,0rcu_preempt14386-21munin-run08:38:240
81390,0rcu_preempt10956-21kworker/0:008:48:430
1727499392,0cyclictest20557-21ping07:28:250
81370,0rcu_preempt3-21ksoftirqd/008:58:470
81370,0rcu_preempt3-21ksoftirqd/008:23:290
81360,0rcu_preempt3-21ksoftirqd/008:58:240
81350,0rcu_preempt3-21ksoftirqd/007:13:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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