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2026-07-08 - 19:58

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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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 the highest latencies:
System rackaslot5s.osadl.org (updated Wed Jul 08, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811320,0rcu_preempt3-21ksoftirqd/012:02:350
811050,0rcu_preempt851-21rngd10:15:520
81880,0rcu_preempt3-21ksoftirqd/008:05:100
81860,0rcu_preempt3-21ksoftirqd/012:20:410
81840,0rcu_preempt3-21ksoftirqd/012:24:080
81830,0rcu_preempt3-21ksoftirqd/009:15:330
81830,0rcu_preempt3-21ksoftirqd/008:58:350
81810,0rcu_preempt3-21ksoftirqd/010:47:280
81810,0rcu_preempt3-21ksoftirqd/010:47:280
81810,0rcu_preempt3-21ksoftirqd/010:05:570
81810,0rcu_preempt23258-21kworker/0:111:33:100
81800,0rcu_preempt3-21ksoftirqd/010:59:300
81800,0rcu_preempt3-21ksoftirqd/010:59:300
81800,0rcu_preempt3-21ksoftirqd/010:07:280
81800,0rcu_preempt3-21ksoftirqd/010:00:140
10050800,0irq/346-48484004182-1kworker/0:0H11:42:380
81790,0rcu_preempt3-21ksoftirqd/012:30:420
81790,0rcu_preempt3-21ksoftirqd/010:36:490
81790,0rcu_preempt3-21ksoftirqd/008:23:410
81790,0rcu_preempt3-21ksoftirqd/008:18:500
81790,0rcu_preempt3-21ksoftirqd/008:15:080
81790,0rcu_preempt23896-21kworker/0:007:58:560
81790,0rcu_preempt23896-21kworker/0:007:58:560
81790,0rcu_preempt15686-21kworker/0:107:32:280
81780,0rcu_preempt3-21ksoftirqd/010:54:370
81780,0rcu_preempt3-21ksoftirqd/009:25:370
81780,0rcu_preempt3-21ksoftirqd/008:39:220
81780,0rcu_preempt3-21ksoftirqd/008:11:260
81780,0rcu_preempt14590-21diskmemload11:58:520
81770,0rcu_preempt3-21ksoftirqd/010:43:140
81770,0rcu_preempt3-21ksoftirqd/009:28:360
81770,0rcu_preempt3-21ksoftirqd/009:07:500
81770,0rcu_preempt3-21ksoftirqd/007:56:050
10050770,0irq/346-484840054-21kswapd012:12:260
10050770,0irq/346-484840054-21kswapd009:50:090
81760,0rcu_preempt3-21ksoftirqd/010:25:030
81760,0rcu_preempt3-21ksoftirqd/009:42:130
81760,0rcu_preempt3-21ksoftirqd/009:05:380
81760,0rcu_preempt3-21ksoftirqd/008:50:230
81760,0rcu_preempt3-21ksoftirqd/008:32:510
81760,0rcu_preempt3-21ksoftirqd/007:11:110
81760,0rcu_preempt23258-21kworker/0:111:39:570
81760,0rcu_preempt12800-21kworker/0:011:49:160
81750,0rcu_preempt3-21ksoftirqd/012:34:380
81750,0rcu_preempt3-21ksoftirqd/011:22:310
81750,0rcu_preempt3-21ksoftirqd/011:17:410
81750,0rcu_preempt3-21ksoftirqd/010:31:040
81750,0rcu_preempt3-21ksoftirqd/009:53:110
81750,0rcu_preempt3-21ksoftirqd/009:41:120
81750,0rcu_preempt3-21ksoftirqd/009:32:290
81750,0rcu_preempt3-21ksoftirqd/008:53:270
81750,0rcu_preempt3-21ksoftirqd/008:42:340
81750,0rcu_preempt3-21ksoftirqd/007:42:100
81750,0rcu_preempt3-21ksoftirqd/007:14:540
81750,0rcu_preempt12680-21apt-get07:22:200
10050750,0irq/346-484840054-21kswapd011:09:340
81740,0rcu_preempt3-21ksoftirqd/011:13:340
81740,0rcu_preempt3-21ksoftirqd/010:21:140
81740,0rcu_preempt3-21ksoftirqd/007:17:420
81730,0rcu_preempt3-21ksoftirqd/012:11:060
81730,0rcu_preempt3-21ksoftirqd/011:31:140
81730,0rcu_preempt3-21ksoftirqd/011:06:000
81730,0rcu_preempt3-21ksoftirqd/008:27:150
81720,0rcu_preempt3-21ksoftirqd/011:52:090
81720,0rcu_preempt3-21ksoftirqd/010:38:300
81720,0rcu_preempt3-21ksoftirqd/009:17:250
81720,0rcu_preempt3-21ksoftirqd/007:48:370
81720,0rcu_preempt3-21ksoftirqd/007:48:370
81700,0rcu_preempt3-21ksoftirqd/007:07:090
81690,0rcu_preempt14555-21sort07:27:280
81660,0rcu_preempt3-21ksoftirqd/007:37:390
10050630,0irq/346-48484008100-21ssh12:15:371
9950600,0irq/345-4848400171rcuc/109:37:081
9950590,0irq/345-4848400181ktimersoftd/111:05:151
9950580,0irq/345-4848400181ktimersoftd/112:23:071
10050570,0irq/346-484840017192-21ssh09:09:011
10050570,0irq/346-48484000-21swapper/111:17:131
9950560,0irq/345-484840032304-1kworker/1:2H09:29:081
10050560,0irq/346-484840029777-21ssh10:59:191
10050560,0irq/346-484840029777-21ssh10:59:191
9950540,0irq/345-48484007336-1kworker/1:1H10:05:181
10050540,0irq/346-484840022340-1kworker/1:1H10:22:091
9950530,0irq/345-4848400171rcuc/111:52:211
10050520,0irq/346-484840054-21kswapd010:29:291
9950510,0irq/345-48484004183-1kworker/1:0H11:43:081
9950510,0irq/345-484840026684-1kworker/1:1H11:33:361
9950510,0irq/345-484840014966-1kworker/1:1H10:44:381
9950510,0irq/345-484840014873-1kworker/1:1H09:40:251
9950500,0irq/345-48484009967-1kworker/1:0H10:52:161
9950500,0irq/345-484840027327-1kworker/1:2H10:25:161
10050500,0irq/346-48484000-21swapper/111:30:401
10050500,0irq/346-48484000-21swapper/109:20:481
9950490,0irq/345-484840054-21kswapd011:09:041
9950490,0irq/345-484840029781-1kworker/1:0H09:59:121
9950490,0irq/345-484840029781-1kworker/1:0H09:57:011
9950490,0irq/345-484840012339-1kworker/1:0H10:12:531
9950480,0irq/345-48484004934-1kworker/1:2H10:35:521
9950480,0irq/345-484840019130-1kworker/1:1H11:57:481
10050480,0irq/346-4848400851-21rngd11:41:351
9950470,0irq/345-484840026519-1kworker/1:1H12:34:341
9950460,0irq/345-484840017389-1kworker/1:3H09:12:111
81460,0rcu_preempt19-21ksoftirqd/110:47:351
81460,0rcu_preempt19-21ksoftirqd/110:47:351
10050460,0irq/346-48484000-21swapper/108:18:281
9950440,0irq/345-484840022340-1kworker/1:1H10:38:081
9950440,0irq/345-48484000-21swapper/109:22:391
9950440,0irq/345-48484000-21swapper/108:22:251
10050440,0irq/346-484840014174-21ssh11:16:481
10050440,0irq/346-48484000-21swapper/112:03:201
10050430,0irq/346-48484000-21swapper/108:47:391
9950420,0irq/345-48484000-21swapper/111:27:081
10050420,0irq/346-484840031994-21apt-get12:07:181
10050420,0irq/346-484840025651-21munin-run08:02:091
10050420,0irq/346-484840025651-21munin-run08:02:091
81410,0rcu_preempt19-21ksoftirqd/107:02:301
10050410,0irq/346-48484000-21swapper/112:18:381
10050410,0irq/346-48484000-21swapper/109:51:071
81400,0rcu_preempt19-21ksoftirqd/111:49:331
10050390,0irq/346-484840025893-21wget08:02:211
10050380,0irq/346-484840019639-21ssh12:27:251
10050380,0irq/346-484840017526-21ssh09:42:241
81370,0rcu_preempt19744-21cut07:42:341
10050370,0irq/346-484840012510-21ssh10:09:381
81360,0rcu_preempt19-21ksoftirqd/107:36:131
9950340,0irq/345-48484000-21swapper/107:57:081
10050330,0irq/346-484840027919-21if_eth308:07:301
10050330,0irq/346-48484000-21swapper/108:32:211
9950320,0irq/345-484840012223-1kworker/1:1H07:23:591
9950320,0irq/345-48484000-21swapper/108:17:081
88152320,0sleep13967-1kworker/1:0H07:07:501
61812320,0chrt6093-1kworker/1:1H08:40:081
131372320,0sleep112671-1kworker/1:0H09:02:201
759699312,0cyclictest0-21swapper/107:21:271
222322310,0sleep122059-1kworker/1:1H07:50:531
222322310,0sleep122059-1kworker/1:1H07:50:531
9950300,0irq/345-48484009382-21munin-node1
79852300,0sleep17738-1kworker/1:2H08:46:491
10050300,0irq/346-48484000-21swapper/108:52:321
10050290,0irq/346-484840054-21kswapd008:57:241
81280,0rcu_preempt19-21ksoftirqd/107:27:291
759699282,0cyclictest0-21swapper/108:30:311
10050280,0irq/346-484840010878-21ping07:37:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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