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2025-12-27 - 15:48

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 Sat Dec 27, 2025 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2606521220,0sleep010050irq/346-484840008:06:320
811070,0rcu_preempt15791-21kworker/0:007:36:550
2781621060,0sleep010050irq/346-484840008:12:500
811020,0rcu_preempt3-21ksoftirqd/010:29:070
811000,0rcu_preempt3-21ksoftirqd/012:34:350
811000,0rcu_preempt3-21ksoftirqd/012:34:350
81990,0rcu_preempt3-21ksoftirqd/012:09:470
81980,0rcu_preempt3-21ksoftirqd/007:40:330
81900,0rcu_preempt3-21ksoftirqd/011:01:520
81900,0rcu_preempt3-21ksoftirqd/010:15:370
81890,0rcu_preempt3-21ksoftirqd/011:33:010
294102880,0sleep010050irq/346-484840008:17:250
294102880,0sleep010050irq/346-484840008:17:250
81860,0rcu_preempt3-21ksoftirqd/007:46:230
81770,0rcu_preempt19-21ksoftirqd/112:25:121
81750,0rcu_preempt3-21ksoftirqd/012:01:400
81740,0rcu_preempt3-21ksoftirqd/009:27:270
81740,0rcu_preempt14405-21kworker/0:109:50:070
10050740,0irq/346-484840015059-1kworker/1:0H12:12:471
81720,0rcu_preempt3-21ksoftirqd/011:38:310
81720,0rcu_preempt3-21ksoftirqd/009:15:020
81710,0rcu_preempt3-21ksoftirqd/012:25:570
81710,0rcu_preempt3-21ksoftirqd/010:40:070
81710,0rcu_preempt3-21ksoftirqd/010:40:070
81700,0rcu_preempt54-21kswapd010:05:090
81700,0rcu_preempt375-21kworker/0:110:45:070
81700,0rcu_preempt3-21ksoftirqd/009:36:400
81700,0rcu_preempt19-21ksoftirqd/107:39:571
81690,0rcu_preempt3-21ksoftirqd/011:59:150
81690,0rcu_preempt3-21ksoftirqd/011:24:130
10050690,0irq/346-484840027264-21ssh09:25:001
10050690,0irq/346-484840024463-21ssh09:21:021
10050690,0irq/346-48484000-21swapper/109:40:241
81680,0rcu_preempt3-21ksoftirqd/012:36:260
81680,0rcu_preempt3-21ksoftirqd/011:45:370
81670,0rcu_preempt3-21ksoftirqd/010:52:330
81670,0rcu_preempt3-21ksoftirqd/010:36:050
81670,0rcu_preempt3-21ksoftirqd/010:01:200
81670,0rcu_preempt3-21ksoftirqd/009:42:100
81660,0rcu_preempt3-21ksoftirqd/011:51:030
81660,0rcu_preempt3-21ksoftirqd/010:57:490
81660,0rcu_preempt3-21ksoftirqd/009:10:590
81640,0rcu_preempt19-21ksoftirqd/109:35:311
81630,0rcu_preempt19-21ksoftirqd/111:28:261
10050630,0irq/346-4848400111rcuc/011:15:400
81620,0rcu_preempt6754-21cyclictest09:00:070
81620,0rcu_preempt3-21ksoftirqd/007:25:070
81620,0rcu_preempt19-21ksoftirqd/110:29:511
81620,0rcu_preempt13619-21diskmemload10:13:061
10050620,0irq/346-484840024312-21ssh12:22:301
9950610,0irq/345-484840016257-1kworker/1:3H11:40:281
81610,0rcu_preempt3-21ksoftirqd/012:10:070
81610,0rcu_preempt3-21ksoftirqd/009:30:320
10050610,0irq/346-4848400400-1kworker/1:1H12:32:421
10050610,0irq/346-4848400400-1kworker/1:1H12:32:421
81600,0rcu_preempt3-21ksoftirqd/011:07:240
81600,0rcu_preempt13619-21diskmemload10:12:040
81590,0rcu_preempt749-21kworker/0:110:22:280
248962590,0chrt9950irq/345-484840009:21:400
81580,0rcu_preempt8863-21apt-get08:55:090
81580,0rcu_preempt3-21ksoftirqd/011:44:020
81580,0rcu_preempt3-21ksoftirqd/011:25:310
81580,0rcu_preempt3-21ksoftirqd/009:57:300
81580,0rcu_preempt3-21ksoftirqd/009:45:080
81580,0rcu_preempt13619-21diskmemload10:49:411
81570,0rcu_preempt7404-21kworker/0:010:30:090
81570,0rcu_preempt3-21ksoftirqd/012:17:260
81570,0rcu_preempt3-21ksoftirqd/011:10:450
81570,0rcu_preempt19-21ksoftirqd/107:27:291
229462570,0sleep010050irq/346-484840007:58:200
81560,0rcu_preempt3-21ksoftirqd/012:20:090
81560,0rcu_preempt31541-21kworker/0:208:30:180
81560,0rcu_preempt31541-21kworker/0:208:30:180
81550,0rcu_preempt19-21ksoftirqd/107:23:381
81540,0rcu_preempt3-21ksoftirqd/009:05:060
81540,0rcu_preempt3-21ksoftirqd/008:20:070
10050540,0irq/346-48484005479-21taskset12:00:571
10050540,0irq/346-484840024845-1kworker/1:3H09:30:331
10050530,0irq/346-484840028701-21ssh10:38:431
10050530,0irq/346-484840021836-1kworker/1:2H11:08:271
10050530,0irq/346-484840013672-21munin-node1
10050520,0irq/346-4848400359-1kworker/1:3H11:20:251
10050520,0irq/346-484840028438-1kworker/1:3H10:04:191
10050520,0irq/346-484840014065-1kworker/1:4H10:40:481
10050520,0irq/346-484840014065-1kworker/1:4H10:40:481
10050520,0irq/346-484840010334-1kworker/1:1H09:13:481
9950510,0irq/345-48484006134-1kworker/1:1H12:15:301
81510,0rcu_preempt3-21ksoftirqd/008:40:160
81510,0rcu_preempt20344-1kworker/1:0H09:16:551
81510,0rcu_preempt19-21ksoftirqd/111:46:171
10050510,0irq/346-48484008306-21ssh12:05:011
10050510,0irq/346-484840021836-1kworker/1:2H11:10:431
10050510,0irq/346-484840019386-1kworker/1:3H09:52:451
10050510,0irq/346-484840017843-21ssh11:02:311
10050510,0irq/346-484840014065-1kworker/1:4H10:24:251
10050510,0irq/346-48484000-21swapper/109:59:571
9950500,0irq/345-48484002824-1kworker/1:5H11:30:221
81500,0rcu_preempt3-21ksoftirqd/008:45:180
81500,0rcu_preempt3-21ksoftirqd/007:12:550
10050500,0irq/346-484840054-21kswapd011:55:061
10050500,0irq/346-48484004815-21ssh12:36:531
10050500,0irq/346-484840030894-21ssh11:17:051
10050500,0irq/346-484840028850-21ssh11:50:451
10050500,0irq/346-48484001924-21ssh10:08:431
10050500,0irq/346-484840017253-21ssh11:38:231
10050500,0irq/346-484840010766-21munin-node1
81490,0rcu_preempt3528-21kworker/0:007:15:170
81490,0rcu_preempt3-21ksoftirqd/008:00:110
10050490,0irq/346-48484009641-21ssh10:53:371
10050490,0irq/346-48484000-21swapper/108:23:301
9950480,0irq/345-4848400675699cyclictest09:01:361
9950480,0irq/345-48484003957-1kworker/1:3H08:40:031
81480,0rcu_preempt3-21ksoftirqd/008:35:170
10050480,0irq/346-4848400502-1kworker/1:0H10:19:521
9950470,0irq/345-48484006732-21sh07:09:550
9950470,0irq/345-48484000-21swapper/110:30:391
9950470,0irq/345-48484000-21swapper/107:59:571
81470,0rcu_preempt3-21ksoftirqd/008:50:130
81470,0rcu_preempt31541-21kworker/0:208:25:160
81470,0rcu_preempt19730-21kworker/0:207:50:250
81450,0rcu_preempt3-21ksoftirqd/007:20:230
10050450,0irq/346-48484000-21swapper/107:41:581
10050440,0irq/346-484840010020-21ping07:30:101
10050440,0irq/346-48484000-21swapper/007:30:170
81410,0rcu_preempt19-21ksoftirqd/107:05:211
81400,0rcu_preempt19-21ksoftirqd/107:45:101
10050400,0irq/346-48484000-21swapper/109:05:531
10050390,0irq/346-484840054-21kswapd008:25:201
81380,0rcu_preempt19-21ksoftirqd/107:19:561
10050380,0irq/346-484840010334-1kworker/1:1H08:59:561
81370,0rcu_preempt19-21ksoftirqd/107:59:581
81370,0rcu_preempt19-21ksoftirqd/107:50:241
81360,0rcu_preempt19-21ksoftirqd/108:39:561
10050340,0irq/346-48484000-21swapper/108:51:401
9950330,0irq/345-48484000-21swapper/108:10:221
10050330,0irq/346-48484000-21swapper/108:15:281
10050330,0irq/346-48484000-21swapper/108:15:281
10050320,0irq/346-48484001166-21rs:main1
81300,0rcu_preempt19-21ksoftirqd/108:30:101
81300,0rcu_preempt19-21ksoftirqd/108:30:101
81300,0rcu_preempt19-21ksoftirqd/107:10:141
1699290,0migration/16021-21if_eth108:45:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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