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2025-05-13 - 14:57

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 the highest latencies:
System rackaslot5s.osadl.org (updated Tue May 13, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81880,0rcu_preempt19-21ksoftirqd/109:24:091
81810,0rcu_preempt3-21ksoftirqd/011:38:140
81780,0rcu_preempt3-21ksoftirqd/011:24:490
81780,0rcu_preempt3-21ksoftirqd/010:22:570
81770,0rcu_preempt29767-21ping07:57:380
81760,0rcu_preempt3-21ksoftirqd/008:01:050
81750,0rcu_preempt3-21ksoftirqd/010:58:420
81750,0rcu_preempt3-21ksoftirqd/008:08:080
81750,0rcu_preempt25696-21kworker/0:110:52:390
81750,0rcu_preempt25696-21kworker/0:110:48:590
81750,0rcu_preempt24514-21kworker/0:110:12:380
81750,0rcu_preempt14437-21kworker/0:212:04:350
81740,0rcu_preempt3-21ksoftirqd/007:12:370
81740,0rcu_preempt29767-21ping08:13:120
81740,0rcu_preempt29767-21ping08:03:070
81740,0rcu_preempt20472-21diskmemload09:31:160
81740,0rcu_preempt0-21swapper/011:37:150
81730,0rcu_preempt6188-21kworker/0:112:23:450
81730,0rcu_preempt3-21ksoftirqd/011:19:070
81730,0rcu_preempt3-21ksoftirqd/008:26:010
81730,0rcu_preempt3-21ksoftirqd/008:18:010
81730,0rcu_preempt24876-21kworker/0:109:20:530
81730,0rcu_preempt20472-21diskmemload12:33:120
81730,0rcu_preempt20472-21diskmemload12:31:190
81730,0rcu_preempt20472-21diskmemload11:46:050
10050730,0irq/346-484840016118-1kworker/0:3H09:48:500
81720,0rcu_preempt3-21ksoftirqd/012:19:060
81720,0rcu_preempt3-21ksoftirqd/012:10:300
81720,0rcu_preempt3-21ksoftirqd/010:07:240
81720,0rcu_preempt3-21ksoftirqd/009:04:330
81720,0rcu_preempt20472-21diskmemload10:21:330
81720,0rcu_preempt20472-21diskmemload10:21:330
81720,0rcu_preempt0-21swapper/011:58:550
81710,0rcu_preempt54-21kswapd011:12:450
81710,0rcu_preempt54-21kswapd008:59:170
81710,0rcu_preempt3-21ksoftirqd/009:10:030
81710,0rcu_preempt3-21ksoftirqd/008:31:290
81710,0rcu_preempt3-21ksoftirqd/007:41:090
81710,0rcu_preempt3-21ksoftirqd/007:24:110
81710,0rcu_preempt20472-21diskmemload09:52:480
81710,0rcu_preempt1221-21kworker/0:307:28:020
81700,0rcu_preempt3-21ksoftirqd/009:46:060
81700,0rcu_preempt3-21ksoftirqd/009:27:170
81700,0rcu_preempt3-21ksoftirqd/009:13:220
81700,0rcu_preempt24514-21kworker/0:110:12:390
81700,0rcu_preempt20472-21diskmemload12:14:500
81700,0rcu_preempt20472-21diskmemload10:29:410
81700,0rcu_preempt20472-21diskmemload10:29:410
81700,0rcu_preempt20472-21diskmemload09:38:500
81700,0rcu_preempt17751-21kworker/0:007:21:100
81700,0rcu_preempt17751-21kworker/0:007:21:100
81700,0rcu_preempt14437-21kworker/0:211:49:190
81700,0rcu_preempt1221-21kworker/0:307:33:050
81700,0rcu_preempt0-21swapper/009:33:360
81690,0rcu_preempt5725-21kworker/0:008:33:050
81690,0rcu_preempt5725-21kworker/0:008:33:050
81690,0rcu_preempt3-21ksoftirqd/011:52:490
81690,0rcu_preempt3-21ksoftirqd/011:30:410
81690,0rcu_preempt3-21ksoftirqd/011:02:390
81690,0rcu_preempt20472-21diskmemload11:08:380
81690,0rcu_preempt20472-21diskmemload10:40:000
81690,0rcu_preempt20472-21diskmemload09:58:540
81690,0rcu_preempt1221-21kworker/0:307:43:240
81680,0rcu_preempt0-21swapper/008:48:030
81670,0rcu_preempt3-21ksoftirqd/008:40:530
81660,0rcu_preempt3-21ksoftirqd/010:43:080
81660,0rcu_preempt3-21ksoftirqd/010:43:080
81660,0rcu_preempt3-21ksoftirqd/010:33:010
81660,0rcu_preempt3-21ksoftirqd/007:51:420
81650,0rcu_preempt3-21ksoftirqd/008:43:060
81650,0rcu_preempt3-21ksoftirqd/007:13:070
81650,0rcu_preempt19-21ksoftirqd/112:07:591
81640,0rcu_preempt8473-1kworker/1:3H11:11:041
81610,0rcu_preempt3-21ksoftirqd/008:54:050
10050610,0irq/346-4848400181ktimersoftd/112:30:361
10050590,0irq/346-4848400181ktimersoftd/110:23:381
9950580,0irq/345-484840019-21ksoftirqd/110:19:311
9950580,0irq/345-484840019-21ksoftirqd/110:19:311
10050580,0irq/346-484840081rcu_preempt10:44:381
10050580,0irq/346-484840081rcu_preempt10:44:381
81540,0rcu_preempt19-21ksoftirqd/109:47:511
10050540,0irq/346-484840054-21kswapd009:44:281
81530,0rcu_preempt3-21ksoftirqd/007:06:220
81530,0rcu_preempt3-21ksoftirqd/007:06:220
10050530,0irq/346-484840054-21kswapd009:52:461
10250520,0irq/333-mmc054-21kswapd011:57:571
10050500,0irq/346-484840054-21kswapd011:22:011
10050500,0irq/346-484840019-21ksoftirqd/112:27:051
10050490,0irq/346-484840054-21kswapd011:29:141
10050480,0irq/346-484840054-21kswapd011:32:491
10050480,0irq/346-484840054-21kswapd009:17:231
10050470,0irq/346-484840054-21kswapd012:17:331
10050460,0irq/346-484840054-21kswapd012:37:371
10050460,0irq/346-484840054-21kswapd010:32:181
10050460,0irq/346-484840054-21kswapd010:32:181
10050460,0irq/346-484840019-21ksoftirqd/109:41:321
81450,0rcu_preempt5894-21apt-get08:22:511
10050450,0irq/346-484840054-21kswapd012:06:281
10050450,0irq/346-484840054-21kswapd010:42:131
10050440,0irq/346-484840054-21kswapd009:07:431
10050440,0irq/346-484840031746-1kworker/1:0H10:05:071
10050440,0irq/346-484840016885-21ping07:18:101
10050440,0irq/346-484840016885-21ping07:18:101
81430,0rcu_preempt7087-21ssh12:17:581
10050430,0irq/346-484840020579-21ssh11:16:181
10050430,0irq/346-48484000-21swapper/110:56:111
81420,0rcu_preempt19-21ksoftirqd/110:07:591
10050420,0irq/346-484840026640-21meminfo09:58:031
10050410,0irq/346-484840054-21kswapd011:44:211
10050410,0irq/346-484840013612-21cyclictest11:48:311
9950400,0irq/345-484840027411-1kworker/1:0H09:36:091
81400,0rcu_preempt19-21ksoftirqd/111:53:341
81400,0rcu_preempt19-21ksoftirqd/108:57:381
81400,0rcu_preempt10685-21rm11:02:581
10050400,0irq/346-484840054-21kswapd010:49:061
10050400,0irq/346-484840054-21kswapd008:01:581
10050400,0irq/346-484840021760-21ssh10:33:221
81390,0rcu_preempt25358-21apt-get11:22:501
81390,0rcu_preempt0-21swapper/109:28:401
10050390,0irq/346-484840029721-21ssh09:19:401
10050390,0irq/346-484840020134-1kworker/1:3H10:16:191
81380,0rcu_preempt0-21swapper/110:57:521
10050380,0irq/346-48484006735-21ssh11:38:571
10050380,0irq/346-484840014075-21munin-node1
81370,0rcu_preempt19-21ksoftirqd/107:07:121
81370,0rcu_preempt19-21ksoftirqd/107:07:121
81370,0rcu_preempt0-21swapper/108:27:581
10050370,0irq/346-48484000-21swapper/107:08:351
81360,0rcu_preempt31791-1kworker/1:2H08:03:061
81350,0rcu_preempt19-21ksoftirqd/107:33:111
201132350,0sleep116871-1kworker/1:1H09:03:541
10050350,0irq/346-484840023414-1kworker/1:0H07:37:581
10050350,0irq/346-48484000-21swapper/107:48:001
9950340,0irq/345-48484000-21swapper/107:57:381
81340,0rcu_preempt29954-1kworker/1:0H08:07:581
121932340,0sleep110313-1kworker/1:3H08:41:451
105602340,0sleep110313-1kworker/1:3H08:36:581
105602340,0sleep110313-1kworker/1:3H08:36:581
10050340,0irq/346-48484000-21swapper/108:15:001
10050340,0irq/346-48484000-21swapper/107:25:481
81330,0rcu_preempt20303-21apt-get07:27:501
10050330,0irq/346-484840016871-1kworker/1:1H08:58:061
10050320,0irq/346-48484000-21swapper/107:42:561
10050310,0irq/346-484840016243-21ls07:13:071
10050310,0irq/346-484840010313-1kworker/1:3H08:42:521
10050300,0irq/346-48484000-21swapper/108:18:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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