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2025-05-13 - 02:58

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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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 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811190,0rcu_preempt19-21ksoftirqd/122:00:081
811060,0rcu_preempt19-21ksoftirqd/121:18:051
81990,0rcu_preempt19-21ksoftirqd/119:19:101
81980,0rcu_preempt3-21ksoftirqd/022:47:120
81940,0rcu_preempt19-21ksoftirqd/123:42:111
81930,0rcu_preempt19-21ksoftirqd/123:23:001
81890,0rcu_preempt19-21ksoftirqd/120:37:541
81890,0rcu_preempt19-21ksoftirqd/119:03:021
81860,0rcu_preempt19-21ksoftirqd/122:37:571
81820,0rcu_preempt19-21ksoftirqd/123:32:541
81820,0rcu_preempt19-21ksoftirqd/121:11:311
81790,0rcu_preempt3-21ksoftirqd/021:12:080
81780,0rcu_preempt3-21ksoftirqd/022:24:070
81750,0rcu_preempt3-21ksoftirqd/021:47:100
81740,0rcu_preempt3-21ksoftirqd/023:59:200
81740,0rcu_preempt3-21ksoftirqd/023:37:380
81740,0rcu_preempt3-21ksoftirqd/022:37:500
81740,0rcu_preempt3-21ksoftirqd/022:19:150
81730,0rcu_preempt3-21ksoftirqd/022:11:230
81730,0rcu_preempt3-21ksoftirqd/000:08:380
81720,0rcu_preempt3-21ksoftirqd/023:21:170
81720,0rcu_preempt3-21ksoftirqd/021:22:550
81720,0rcu_preempt3-21ksoftirqd/000:34:110
81710,0rcu_preempt3-21ksoftirqd/023:05:450
81700,0rcu_preempt3-21ksoftirqd/023:55:550
81700,0rcu_preempt3-21ksoftirqd/023:24:240
81700,0rcu_preempt19-21ksoftirqd/100:22:011
81690,0rcu_preempt3-21ksoftirqd/022:30:460
81690,0rcu_preempt3-21ksoftirqd/021:13:360
81670,0rcu_preempt19-21ksoftirqd/100:13:121
81640,0rcu_preempt8073-21memory00:13:050
81630,0rcu_preempt3-21ksoftirqd/021:29:440
81630,0rcu_preempt3-21ksoftirqd/020:43:100
81630,0rcu_preempt3-21ksoftirqd/019:52:570
81630,0rcu_preempt21660-21ping20:02:580
81630,0rcu_preempt19-21ksoftirqd/119:37:391
81620,0rcu_preempt3-21ksoftirqd/023:41:090
81620,0rcu_preempt19-21ksoftirqd/100:08:081
81610,0rcu_preempt6194-21diskstats20:47:570
81610,0rcu_preempt19-21ksoftirqd/121:54:131
81610,0rcu_preempt19-21ksoftirqd/121:54:131
81610,0rcu_preempt1645-21meminfo20:33:030
81610,0rcu_preempt1645-21meminfo20:33:030
103122610,0chrt10050irq/346-484840019:21:200
81600,0rcu_preempt21660-21ping20:18:050
81600,0rcu_preempt20580-21irqstats23:48:010
81600,0rcu_preempt19-21ksoftirqd/122:57:521
81600,0rcu_preempt19-21ksoftirqd/121:28:011
81590,0rcu_preempt3-21ksoftirqd/023:15:580
118502590,0chrt10050irq/346-484840019:25:210
118502590,0chrt10050irq/346-484840019:25:210
81580,0rcu_preempt19-21ksoftirqd/120:13:041
81580,0rcu_preempt19-21ksoftirqd/120:13:041
81570,0rcu_preempt19-21ksoftirqd/121:22:541
81570,0rcu_preempt19-21ksoftirqd/119:17:391
81560,0rcu_preempt3291-21meminfo20:38:020
81560,0rcu_preempt3-21ksoftirqd/022:02:590
81560,0rcu_preempt3-21ksoftirqd/019:59:240
81560,0rcu_preempt19-21ksoftirqd/122:47:241
81560,0rcu_preempt19-21ksoftirqd/121:45:481
10050560,0irq/346-484840054-21kswapd022:58:270
81550,0rcu_preempt3-21ksoftirqd/023:08:100
81550,0rcu_preempt3-21ksoftirqd/021:55:590
81550,0rcu_preempt3-21ksoftirqd/021:55:590
81550,0rcu_preempt19-21ksoftirqd/120:08:131
81540,0rcu_preempt3-21ksoftirqd/020:13:010
81540,0rcu_preempt3-21ksoftirqd/020:13:010
81540,0rcu_preempt3-21ksoftirqd/019:12:540
10050540,0irq/346-484840054-21kswapd021:18:010
81530,0rcu_preempt3-21ksoftirqd/023:27:540
81530,0rcu_preempt3-21ksoftirqd/022:53:010
81530,0rcu_preempt3-21ksoftirqd/022:32:540
81530,0rcu_preempt3-21ksoftirqd/000:27:520
81530,0rcu_preempt19-21ksoftirqd/100:28:031
5528995312,0cyclictest15696-21apt-get23:42:510
81520,0rcu_preempt3-21ksoftirqd/020:52:550
81510,0rcu_preempt31319-21kworker/0:120:57:530
81510,0rcu_preempt19-21ksoftirqd/122:08:461
81510,0rcu_preempt14334-21apt-get00:22:510
81510,0rcu_preempt0-21swapper/123:05:011
81500,0rcu_preempt3-21ksoftirqd/022:13:500
81500,0rcu_preempt3-21ksoftirqd/020:10:510
81500,0rcu_preempt3-21ksoftirqd/000:06:110
81500,0rcu_preempt19-21ksoftirqd/123:13:101
81500,0rcu_preempt19-21ksoftirqd/122:22:571
81500,0rcu_preempt0-21swapper/122:33:241
9950490,0irq/345-4848400753-21rngd21:51:190
81490,0rcu_preempt3-21ksoftirqd/022:48:010
81490,0rcu_preempt3-21ksoftirqd/022:00:140
81490,0rcu_preempt3-21ksoftirqd/021:36:450
81490,0rcu_preempt32022-21df20:27:560
81490,0rcu_preempt14920-21kworker/0:119:47:520
4350490,0irq/32-433000005849-21dropbear19:07:530
10050490,0irq/346-48484009091-1kworker/0:0H21:03:020
81480,0rcu_preempt5890-21apt-get21:37:510
81480,0rcu_preempt3-21ksoftirqd/020:24:530
81480,0rcu_preempt19-21ksoftirqd/122:54:511
81480,0rcu_preempt19-21ksoftirqd/120:17:551
81470,0rcu_preempt19-21ksoftirqd/121:03:081
552899478,0cyclictest8795-21ping19:37:380
81460,0rcu_preempt8795-21ping19:27:520
81460,0rcu_preempt4029-21apt-get19:02:510
81460,0rcu_preempt19-21ksoftirqd/120:02:591
81460,0rcu_preempt19-21ksoftirqd/100:34:091
5529994626,0cyclictest27361-21ntpq23:18:051
81450,0rcu_preempt19-21ksoftirqd/122:03:071
81440,0rcu_preempt19-21ksoftirqd/123:49:131
81440,0rcu_preempt19-21ksoftirqd/121:14:461
5529994429,0cyclictest1711-21ssh21:32:531
5529994428,0cyclictest2161-21ssh22:48:101
5529994428,0cyclictest12381-21diskmemload23:43:051
81430,0rcu_preempt19-21ksoftirqd/122:27:571
81430,0rcu_preempt19-21ksoftirqd/121:51:571
81430,0rcu_preempt19-21ksoftirqd/119:54:311
81430,0rcu_preempt19-21ksoftirqd/119:52:151
81430,0rcu_preempt19-21ksoftirqd/100:02:151
5529994327,0cyclictest0-21swapper/100:02:531
552899435,0cyclictest15500-21aten_rapower_cu19:37:520
81420,0rcu_preempt3-21ksoftirqd/000:18:030
81420,0rcu_preempt19-21ksoftirqd/123:54:371
81420,0rcu_preempt19-21ksoftirqd/120:25:171
5529994227,0cyclictest19154-21ssh23:08:111
5528994210,0cyclictest0-21swapper/019:42:530
81410,0rcu_preempt19-21ksoftirqd/119:42:591
5529994127,0cyclictest4158-21runrttasks23:28:261
5529994125,0cyclictest4921-21munin-node1
5529994125,0cyclictest22037-21apt-get19:57:511
81400,0rcu_preempt54-21kswapd021:00:231
81400,0rcu_preempt54-21kswapd020:57:361
81400,0rcu_preempt19-21ksoftirqd/120:36:441
81400,0rcu_preempt19-21ksoftirqd/120:36:441
81400,0rcu_preempt19-21ksoftirqd/119:23:051
81400,0rcu_preempt19-21ksoftirqd/119:23:051
81400,0rcu_preempt0-21swapper/122:17:471
5529994025,0cyclictest8795-21ping19:38:091
5529994025,0cyclictest12381-21diskmemload00:22:581
5529994024,0cyclictest12381-21diskmemload21:40:291
81390,0rcu_preempt19-21ksoftirqd/122:13:581
5529993925,0cyclictest6478-21munin-node1
81380,0rcu_preempt19-21ksoftirqd/119:27:571
81380,0rcu_preempt19-21ksoftirqd/119:07:481
5529993722,0cyclictest0-21swapper/120:27:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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