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2026-05-05 - 02:27

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 100 highest latencies:
System rackaslot5s.osadl.org (updated Mon May 04, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811320,0rcu_preempt54-21kswapd011:34:290
811150,0rcu_preempt19-21ksoftirqd/112:08:401
81660,0rcu_preempt19-21ksoftirqd/111:53:311
81630,0rcu_preempt3-21ksoftirqd/011:43:360
81590,0rcu_preempt19-21ksoftirqd/109:48:421
81590,0rcu_preempt19-21ksoftirqd/108:38:261
81580,0rcu_preempt17133-21diskmemload10:43:391
81580,0rcu_preempt17133-21diskmemload10:43:391
10050560,0irq/346-484840024735-1kworker/0:0H10:25:350
10050550,0irq/346-48484004640-1kworker/0:2H11:53:330
10050550,0irq/346-484840029905-1kworker/0:3H09:23:040
10050530,0irq/346-48484000-21swapper/011:42:450
81520,0rcu_preempt5156-21kworker/1:010:24:411
10050520,0irq/346-48484009463-1kworker/0:1H09:33:330
10050520,0irq/346-484840031292-1kworker/0:0H12:33:560
81510,0rcu_preempt9950irq/345-484840009:56:490
81510,0rcu_preempt19-21ksoftirqd/109:58:301
81510,0rcu_preempt19-21ksoftirqd/107:34:581
81510,0rcu_preempt17133-21diskmemload09:43:411
10050510,0irq/346-48484000-21swapper/011:50:590
10050510,0irq/346-48484000-21swapper/010:17:560
9950500,0irq/345-48484000-21swapper/009:13:150
81500,0rcu_preempt3-21ksoftirqd/007:03:330
10050500,0irq/346-48484000-21swapper/010:54:280
81490,0rcu_preempt3-21ksoftirqd/009:46:530
10050490,0irq/346-484840018769-1kworker/0:1H12:29:560
81480,0rcu_preempt5156-21kworker/1:012:27:391
81480,0rcu_preempt19-21ksoftirqd/110:40:541
81480,0rcu_preempt19-21ksoftirqd/109:38:311
10050480,0irq/346-48484002418-1kworker/0:0H09:28:280
9950470,0irq/345-48484000-21swapper/011:08:340
81470,0rcu_preempt3-21ksoftirqd/008:09:200
81470,0rcu_preempt19-21ksoftirqd/112:28:261
81470,0rcu_preempt19-21ksoftirqd/110:08:401
81470,0rcu_preempt19-21ksoftirqd/109:27:471
81470,0rcu_preempt19-21ksoftirqd/107:58:261
81470,0rcu_preempt19-21ksoftirqd/107:38:491
81470,0rcu_preempt19-21ksoftirqd/107:38:491
81470,0rcu_preempt1-21init12:33:241
10050470,0irq/346-484840023901-1kworker/0:1H12:02:550
10050470,0irq/346-484840011880-1kworker/0:2H11:18:290
10050470,0irq/346-48484000-21swapper/010:32:090
10050470,0irq/346-48484000-21swapper/009:09:060
81460,0rcu_preempt19-21ksoftirqd/108:13:381
81460,0rcu_preempt19-21ksoftirqd/107:43:321
81460,0rcu_preempt19-21ksoftirqd/107:31:351
81460,0rcu_preempt19-21ksoftirqd/107:31:351
81460,0rcu_preempt19-21ksoftirqd/107:24:271
81460,0rcu_preempt19-21ksoftirqd/107:24:271
81460,0rcu_preempt19-21ksoftirqd/107:20:001
9950450,0irq/345-484840014739-21dropbear10:43:280
9950450,0irq/345-484840014739-21dropbear10:43:280
81450,0rcu_preempt54-21kswapd012:06:471
81450,0rcu_preempt19-21ksoftirqd/110:18:361
81450,0rcu_preempt19-21ksoftirqd/108:08:351
1599450,0migration/012441-21munin-node0
10050450,0irq/346-484840030452-21ssh12:03:460
10050450,0irq/346-48484001452-21ssh09:24:100
10050450,0irq/346-48484000-21swapper/009:59:110
81440,0rcu_preempt5156-21kworker/1:010:53:301
81440,0rcu_preempt19-21ksoftirqd/112:00:151
81440,0rcu_preempt19-21ksoftirqd/111:45:371
81440,0rcu_preempt19-21ksoftirqd/111:03:391
81440,0rcu_preempt19-21ksoftirqd/110:48:381
81440,0rcu_preempt17133-21diskmemload12:20:201
81440,0rcu_preempt10116-1kworker/0:2H07:23:460
81440,0rcu_preempt10116-1kworker/0:2H07:23:460
10050440,0irq/346-48484008713-21ssh12:14:450
10050440,0irq/346-484840024390-1kworker/0:0H09:48:270
10050440,0irq/346-48484002339-21munin-run08:23:110
10050440,0irq/346-48484000-21swapper/011:29:590
9950430,0irq/345-484840025769-21runrttasks11:27:150
9950430,0irq/345-484840022041-21apt-get10:18:240
9950430,0irq/345-484840016924-21ssh12:23:300
9950430,0irq/345-48484001049-21avahi-daemon10:35:410
81430,0rcu_preempt5156-21kworker/1:009:18:311
81430,0rcu_preempt26252-21ping08:03:361
81430,0rcu_preempt19-21ksoftirqd/112:16:361
81430,0rcu_preempt19-21ksoftirqd/111:48:201
81430,0rcu_preempt19-21ksoftirqd/111:39:381
81430,0rcu_preempt19-21ksoftirqd/111:28:391
81430,0rcu_preempt19-21ksoftirqd/111:08:381
81430,0rcu_preempt19-21ksoftirqd/109:13:331
81430,0rcu_preempt19-21ksoftirqd/108:23:411
81430,0rcu_preempt19-21ksoftirqd/108:18:321
10050430,0irq/346-484840054-21kswapd012:10:120
10050430,0irq/346-48484002332-1kworker/0:0H08:33:230
10050430,0irq/346-484840016854-21munin-node0
10050430,0irq/346-484840016854-21munin-node0
9950420,0irq/345-48484000-21swapper/108:58:121
9950420,0irq/345-48484000-21swapper/010:38:320
9950420,0irq/345-48484000-21swapper/010:08:300
9950420,0irq/345-48484000-21swapper/007:33:340
81420,0rcu_preempt19-21ksoftirqd/111:24:431
81420,0rcu_preempt19-21ksoftirqd/110:58:291
81420,0rcu_preempt19-21ksoftirqd/110:33:291
81420,0rcu_preempt19-21ksoftirqd/110:32:161
81420,0rcu_preempt19-21ksoftirqd/109:33:261
1599420,0migration/012922-21runrttasks08:53:330
1014099425,0cyclictest0-21swapper/007:59:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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