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2026-06-24 - 18:21

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 Wed Jun 24, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81700,0rcu_preempt3-21ksoftirqd/009:38:120
81660,0rcu_preempt3-21ksoftirqd/012:16:220
81650,0rcu_preempt3-21ksoftirqd/010:25:070
157792650,0chrt10050irq/346-484840007:27:170
81640,0rcu_preempt3-21ksoftirqd/012:22:370
81640,0rcu_preempt3-21ksoftirqd/010:35:570
81640,0rcu_preempt3-21ksoftirqd/009:17:300
81630,0rcu_preempt29629-21kworker/0:011:37:370
81630,0rcu_preempt19-21ksoftirqd/107:26:041
81620,0rcu_preempt2330-21sed09:57:520
81570,0rcu_preempt3-21ksoftirqd/010:47:400
81560,0rcu_preempt3-21ksoftirqd/011:57:330
81560,0rcu_preempt3-21ksoftirqd/009:13:370
81560,0rcu_preempt19-21ksoftirqd/111:40:541
81560,0rcu_preempt11675-21ntp_states07:12:460
81540,0rcu_preempt3-21ksoftirqd/011:32:170
81540,0rcu_preempt3-21ksoftirqd/011:07:480
81540,0rcu_preempt3-21ksoftirqd/011:02:350
81540,0rcu_preempt3-21ksoftirqd/009:25:440
81540,0rcu_preempt22212-21kworker/0:008:01:140
81540,0rcu_preempt20821-21kworker/0:009:47:480
81540,0rcu_preempt1470-21runrttasks10:30:030
10050540,0irq/346-48484000-21swapper/012:07:440
81530,0rcu_preempt3-21ksoftirqd/012:18:370
10050530,0irq/346-48484005860-1kworker/0:3H09:42:440
81520,0rcu_preempt3-21ksoftirqd/011:51:240
81520,0rcu_preempt3-21ksoftirqd/011:17:480
81510,0rcu_preempt3-21ksoftirqd/012:27:270
81510,0rcu_preempt3-21ksoftirqd/012:02:350
81510,0rcu_preempt3-21ksoftirqd/010:42:220
81510,0rcu_preempt3-21ksoftirqd/009:53:170
81510,0rcu_preempt3-21ksoftirqd/008:17:320
81510,0rcu_preempt3-21ksoftirqd/008:12:470
81510,0rcu_preempt3-21ksoftirqd/008:02:350
81510,0rcu_preempt25409-21ping08:22:330
10050510,0irq/346-4848400851-21rngd11:23:490
81500,0rcu_preempt54-21kswapd009:02:490
81500,0rcu_preempt3-21ksoftirqd/011:57:120
81500,0rcu_preempt3-21ksoftirqd/011:13:220
81500,0rcu_preempt3-21ksoftirqd/010:56:020
81500,0rcu_preempt3-21ksoftirqd/010:56:020
81500,0rcu_preempt19-21ksoftirqd/112:12:401
81490,0rcu_preempt3-21ksoftirqd/012:32:470
81490,0rcu_preempt3-21ksoftirqd/011:32:390
81490,0rcu_preempt3-21ksoftirqd/010:07:220
81490,0rcu_preempt3-21ksoftirqd/008:11:490
81490,0rcu_preempt19-21ksoftirqd/111:58:481
81490,0rcu_preempt19-21ksoftirqd/111:45:131
81490,0rcu_preempt19-21ksoftirqd/111:45:131
81490,0rcu_preempt19-21ksoftirqd/108:12:481
81490,0rcu_preempt19-21ksoftirqd/107:56:261
81490,0rcu_preempt1470-21runrttasks09:28:501
81480,0rcu_preempt3-21ksoftirqd/010:42:230
81480,0rcu_preempt3-21ksoftirqd/010:42:230
81480,0rcu_preempt3-21ksoftirqd/010:12:340
81480,0rcu_preempt3-21ksoftirqd/009:36:590
81480,0rcu_preempt23492-21kworker/0:211:43:160
81480,0rcu_preempt23492-21kworker/0:211:43:160
81480,0rcu_preempt19-21ksoftirqd/111:17:441
81480,0rcu_preempt19-21ksoftirqd/108:25:381
81480,0rcu_preempt19-21ksoftirqd/108:12:061
81480,0rcu_preempt19-21ksoftirqd/108:04:531
81480,0rcu_preempt19-21ksoftirqd/107:18:241
81480,0rcu_preempt19-21ksoftirqd/107:18:241
10050480,0irq/346-48484003-21ksoftirqd/007:39:380
81470,0rcu_preempt3-21ksoftirqd/009:09:320
81470,0rcu_preempt31204-21kworker/0:009:30:390
81470,0rcu_preempt19-21ksoftirqd/112:32:311
81470,0rcu_preempt19-21ksoftirqd/111:50:221
81470,0rcu_preempt19-21ksoftirqd/109:44:551
81470,0rcu_preempt19-21ksoftirqd/108:19:031
81470,0rcu_preempt19-21ksoftirqd/107:44:321
10050470,0irq/346-48484003-21ksoftirqd/007:43:390
10050470,0irq/346-484840023017-1kworker/0:1H10:20:010
81460,0rcu_preempt3-21ksoftirqd/007:56:000
81460,0rcu_preempt3-21ksoftirqd/007:35:300
81460,0rcu_preempt25409-21ping07:57:481
81460,0rcu_preempt19-21ksoftirqd/110:47:431
81460,0rcu_preempt17591-1kworker/1:1H12:24:391
81460,0rcu_preempt12504-21ping07:20:370
81460,0rcu_preempt12504-21ping07:20:370
10050460,0irq/346-48484007715-21apt-get07:02:320
10050460,0irq/346-48484005364-21munin-node0
10050460,0irq/346-484840012200-21ssh10:07:520
81450,0rcu_preempt3492-21php-cgi08:27:390
81450,0rcu_preempt3-21ksoftirqd/007:07:420
81450,0rcu_preempt19-21ksoftirqd/110:08:001
81450,0rcu_preempt19-21ksoftirqd/110:02:471
81450,0rcu_preempt19-21ksoftirqd/108:54:321
81450,0rcu_preempt19-21ksoftirqd/107:32:551
10050450,0irq/346-484840029865-21ssh10:58:290
81440,0rcu_preempt7288-1kworker/1:3H07:02:401
81440,0rcu_preempt19-21ksoftirqd/112:31:211
81440,0rcu_preempt19-21ksoftirqd/110:36:411
81440,0rcu_preempt19-21ksoftirqd/110:29:191
81440,0rcu_preempt19-21ksoftirqd/110:22:481
81440,0rcu_preempt19-21ksoftirqd/109:52:391
81440,0rcu_preempt12936-21kworker/1:211:54:591
81430,0rcu_preempt54-21kswapd012:02:531
81430,0rcu_preempt19-21ksoftirqd/111:27:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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