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2025-05-02 - 23:38

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 Fri May 02, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810,0rcu_preempt3-21ksoftirqd/007:57:590
81760,0rcu_preempt8837-21kworker/0:110:15:170
81760,0rcu_preempt3-21ksoftirqd/009:52:160
81760,0rcu_preempt3-21ksoftirqd/009:44:130
81760,0rcu_preempt3-21ksoftirqd/009:44:130
81760,0rcu_preempt18973-1kworker/0:0H11:56:000
81750,0rcu_preempt3-21ksoftirqd/011:18:320
81740,0rcu_preempt3-21ksoftirqd/011:58:480
81740,0rcu_preempt3-21ksoftirqd/011:23:380
81740,0rcu_preempt3-21ksoftirqd/009:24:360
81720,0rcu_preempt3-21ksoftirqd/011:05:270
81720,0rcu_preempt3-21ksoftirqd/010:29:110
81720,0rcu_preempt3-21ksoftirqd/009:09:420
81720,0rcu_preempt19-21ksoftirqd/108:13:171
81700,0rcu_preempt22596-21ping07:43:120
81690,0rcu_preempt3-21ksoftirqd/012:27:040
81690,0rcu_preempt3-21ksoftirqd/010:36:080
81690,0rcu_preempt3-21ksoftirqd/010:36:080
81690,0rcu_preempt3-21ksoftirqd/010:23:460
81680,0rcu_preempt3-21ksoftirqd/009:13:500
81670,0rcu_preempt3-21ksoftirqd/012:28:400
81670,0rcu_preempt3-21ksoftirqd/011:45:010
81660,0rcu_preempt3-21ksoftirqd/010:20:070
81660,0rcu_preempt3-21ksoftirqd/010:20:070
81660,0rcu_preempt3-21ksoftirqd/009:30:150
81650,0rcu_preempt19-21ksoftirqd/109:18:041
81620,0rcu_preempt19-21ksoftirqd/111:13:101
81610,0rcu_preempt26539-21diskstats09:53:090
81610,0rcu_preempt19-21ksoftirqd/112:04:521
81600,0rcu_preempt19-21ksoftirqd/111:58:171
81590,0rcu_preempt3-21ksoftirqd/012:17:580
81570,0rcu_preempt19-21ksoftirqd/110:41:331
81560,0rcu_preempt3-21ksoftirqd/011:38:010
81560,0rcu_preempt19-21ksoftirqd/112:21:281
81550,0rcu_preempt3-21ksoftirqd/008:33:020
81550,0rcu_preempt19-21ksoftirqd/109:16:421
10050550,0irq/346-48484000-21swapper/008:28:020
81540,0rcu_preempt19-21ksoftirqd/108:23:031
81530,0rcu_preempt3-21ksoftirqd/010:44:370
81530,0rcu_preempt3-21ksoftirqd/009:38:150
81530,0rcu_preempt3-21ksoftirqd/007:13:050
10050530,0irq/346-484840054-21kswapd012:11:080
10050530,0irq/346-48484000-21swapper/012:04:280
81520,0rcu_preempt3-21ksoftirqd/010:48:090
81520,0rcu_preempt3-21ksoftirqd/010:38:180
81520,0rcu_preempt3-21ksoftirqd/008:58:080
81520,0rcu_preempt3-21ksoftirqd/007:53:110
81520,0rcu_preempt19-21ksoftirqd/110:58:081
81520,0rcu_preempt0-21swapper/109:49:451
290222520,0chrt10050irq/346-484840007:36:470
81510,0rcu_preempt9400-21kworker/0:108:53:070
81510,0rcu_preempt9400-21kworker/0:108:23:250
81510,0rcu_preempt3-21ksoftirqd/010:03:000
81510,0rcu_preempt3-21ksoftirqd/008:14:350
81510,0rcu_preempt23407-21kworker/0:207:32:090
81510,0rcu_preempt19-21ksoftirqd/111:41:061
10050510,0irq/346-48484008862-21apt-get12:13:000
10050510,0irq/346-48484000-21swapper/011:31:180
81500,0rcu_preempt3-21ksoftirqd/010:58:060
81500,0rcu_preempt3-21ksoftirqd/008:11:060
81500,0rcu_preempt19-21ksoftirqd/112:23:151
81500,0rcu_preempt19-21ksoftirqd/111:18:081
81500,0rcu_preempt19-21ksoftirqd/109:23:001
10050500,0irq/346-48484002813-1kworker/0:2H11:33:080
81490,0rcu_preempt3-21ksoftirqd/012:34:370
81490,0rcu_preempt3-21ksoftirqd/011:13:160
81490,0rcu_preempt3-21ksoftirqd/009:33:080
81490,0rcu_preempt3-21ksoftirqd/007:48:130
81490,0rcu_preempt24228-21kworker/0:209:17:530
81490,0rcu_preempt19-21ksoftirqd/112:33:021
81490,0rcu_preempt19-21ksoftirqd/109:30:311
81480,0rcu_preempt3-21ksoftirqd/011:51:530
81480,0rcu_preempt3-21ksoftirqd/010:54:100
81480,0rcu_preempt3-21ksoftirqd/010:54:100
81480,0rcu_preempt3-21ksoftirqd/010:08:300
81480,0rcu_preempt19-21ksoftirqd/110:48:001
81480,0rcu_preempt19-21ksoftirqd/109:43:201
81480,0rcu_preempt19-21ksoftirqd/109:43:201
10050480,0irq/346-48484000-21swapper/010:00:190
81470,0rcu_preempt3-21ksoftirqd/011:08:350
81470,0rcu_preempt3-21ksoftirqd/008:51:050
81470,0rcu_preempt3050-21ping08:18:140
81470,0rcu_preempt19-21ksoftirqd/112:10:231
81470,0rcu_preempt19-21ksoftirqd/111:03:111
81470,0rcu_preempt19-21ksoftirqd/107:43:061
10050470,0irq/346-484840054-21kswapd008:39:190
9950460,0irq/345-4848400181ktimersoftd/110:30:561
81460,0rcu_preempt3-21ksoftirqd/008:06:320
81460,0rcu_preempt21410-21kworker/1:010:06:081
81460,0rcu_preempt19-21ksoftirqd/108:03:591
81450,0rcu_preempt3-21ksoftirqd/007:03:080
81450,0rcu_preempt19467-21apt-get07:08:010
81450,0rcu_preempt19-21ksoftirqd/111:55:051
81450,0rcu_preempt19-21ksoftirqd/110:02:481
81450,0rcu_preempt19-21ksoftirqd/107:28:101
81450,0rcu_preempt19-21ksoftirqd/107:23:571
81440,0rcu_preempt19-21ksoftirqd/112:28:061
81440,0rcu_preempt19-21ksoftirqd/107:19:361
81430,0rcu_preempt3-21ksoftirqd/009:03:070
81430,0rcu_preempt19-21ksoftirqd/112:13:091
81430,0rcu_preempt19-21ksoftirqd/111:29:301
81430,0rcu_preempt19-21ksoftirqd/110:44:321
81430,0rcu_preempt19-21ksoftirqd/110:33:021
81430,0rcu_preempt19-21ksoftirqd/110:33:021
81430,0rcu_preempt19-21ksoftirqd/110:18:001
81430,0rcu_preempt19-21ksoftirqd/110:18:001
81430,0rcu_preempt19-21ksoftirqd/109:53:161
81430,0rcu_preempt19-21ksoftirqd/109:37:481
81430,0rcu_preempt19-21ksoftirqd/108:18:031
81430,0rcu_preempt19-21ksoftirqd/108:07:591
81430,0rcu_preempt19-21ksoftirqd/107:58:061
81430,0rcu_preempt19-21ksoftirqd/107:34:351
81420,0rcu_preempt19-21ksoftirqd/111:37:131
81420,0rcu_preempt19-21ksoftirqd/111:25:121
81420,0rcu_preempt19-21ksoftirqd/110:23:001
81420,0rcu_preempt19-21ksoftirqd/109:38:201
81420,0rcu_preempt19-21ksoftirqd/108:48:081
81420,0rcu_preempt19-21ksoftirqd/108:28:161
81420,0rcu_preempt18862-21ps08:43:130
9950410,0irq/345-48484003-21ksoftirqd/007:18:260
81410,0rcu_preempt22596-21ping07:23:110
81410,0rcu_preempt19-21ksoftirqd/110:15:061
81410,0rcu_preempt19-21ksoftirqd/107:38:131
81410,0rcu_preempt19-21ksoftirqd/107:03:081
241942410,0sleep119301-1kworker/1:0H08:59:011
81400,0rcu_preempt19-21ksoftirqd/111:49:361
81400,0rcu_preempt19-21ksoftirqd/111:46:051
81400,0rcu_preempt19-21ksoftirqd/110:56:381
81400,0rcu_preempt19-21ksoftirqd/110:56:381
81400,0rcu_preempt19-21ksoftirqd/108:32:561
81400,0rcu_preempt19-21ksoftirqd/107:13:151
81400,0rcu_preempt19-21ksoftirqd/107:11:301
81390,0rcu_preempt3-21ksoftirqd/007:38:280
81390,0rcu_preempt19-21ksoftirqd/111:07:521
81390,0rcu_preempt19-21ksoftirqd/108:52:491
81390,0rcu_preempt19-21ksoftirqd/107:53:171
264542390,0chrt22575-1kworker/1:1H09:08:001
81380,0rcu_preempt19-21ksoftirqd/110:08:271
81380,0rcu_preempt19-21ksoftirqd/109:03:171
81380,0rcu_preempt19-21ksoftirqd/108:43:261
81370,0rcu_preempt19-21ksoftirqd/108:39:021
81370,0rcu_preempt19-21ksoftirqd/107:50:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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