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2025-11-30 - 18:01

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 Sun Nov 30, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811310,0rcu_preempt19-21ksoftirqd/110:19:561
704121010,0chrt9950irq/345-484840012:36:200
81950,0rcu_preempt16256-1kworker/0:0H07:34:420
81940,0rcu_preempt54-21kswapd009:39:521
81910,0rcu_preempt19-21ksoftirqd/111:14:581
81750,0rcu_preempt19-21ksoftirqd/111:44:201
81710,0rcu_preempt3-21ksoftirqd/012:20:260
81710,0rcu_preempt3-21ksoftirqd/008:03:180
81700,0rcu_preempt3-21ksoftirqd/011:09:270
81700,0rcu_preempt21441-21kworker/0:011:53:540
81700,0rcu_preempt13357-21kworker/0:210:27:060
81690,0rcu_preempt3-21ksoftirqd/011:24:010
81690,0rcu_preempt3-21ksoftirqd/009:29:370
81690,0rcu_preempt3-21ksoftirqd/008:27:150
81690,0rcu_preempt3-21ksoftirqd/008:14:360
81690,0rcu_preempt3-21ksoftirqd/008:11:210
81690,0rcu_preempt22232-21date07:50:070
81690,0rcu_preempt21441-21kworker/0:011:37:140
81680,0rcu_preempt8288-21kworker/0:108:49:400
81680,0rcu_preempt3-21ksoftirqd/012:32:570
81680,0rcu_preempt3-21ksoftirqd/012:07:330
81680,0rcu_preempt3-21ksoftirqd/009:45:160
81680,0rcu_preempt3-21ksoftirqd/008:22:460
81680,0rcu_preempt3-21ksoftirqd/008:04:580
81680,0rcu_preempt1341-21diskstats11:04:570
81680,0rcu_preempt11418-21kworker/0:311:26:290
81670,0rcu_preempt54-21kswapd012:15:320
81670,0rcu_preempt3-21ksoftirqd/012:24:470
81670,0rcu_preempt3-21ksoftirqd/011:46:330
81670,0rcu_preempt3-21ksoftirqd/010:23:270
81670,0rcu_preempt3-21ksoftirqd/009:50:570
81670,0rcu_preempt3-21ksoftirqd/009:02:280
81670,0rcu_preempt19-21ksoftirqd/111:19:581
81670,0rcu_preempt15046-21kworker/0:207:39:510
81670,0rcu_preempt11500-1kworker/1:2H12:02:231
81670,0rcu_preempt0-21swapper/012:14:120
81670,0rcu_preempt0-21swapper/010:07:070
81660,0rcu_preempt6891-1kworker/0:0H11:16:260
81660,0rcu_preempt3-21ksoftirqd/011:59:490
81660,0rcu_preempt3-21ksoftirqd/009:40:560
81660,0rcu_preempt3-21ksoftirqd/008:34:500
81660,0rcu_preempt3-21ksoftirqd/007:54:540
81660,0rcu_preempt23203-21ntp_states09:19:530
81660,0rcu_preempt23203-21ntp_states09:19:530
81660,0rcu_preempt19-21ksoftirqd/109:19:271
81650,0rcu_preempt3-21ksoftirqd/011:32:330
81650,0rcu_preempt3-21ksoftirqd/010:53:570
81650,0rcu_preempt3-21ksoftirqd/010:16:290
81650,0rcu_preempt3-21ksoftirqd/009:35:280
81650,0rcu_preempt3-21ksoftirqd/008:54:570
81650,0rcu_preempt3-21ksoftirqd/007:44:410
81650,0rcu_preempt19941-21egrep09:59:420
81650,0rcu_preempt15930-21apt-get09:54:410
81650,0rcu_preempt0-21swapper/010:30:290
81650,0rcu_preempt0-21swapper/010:30:290
81640,0rcu_preempt3-21ksoftirqd/011:54:570
81640,0rcu_preempt3-21ksoftirqd/011:02:280
81640,0rcu_preempt3-21ksoftirqd/010:11:450
81640,0rcu_preempt3-21ksoftirqd/008:30:540
81640,0rcu_preempt3-21ksoftirqd/007:29:500
81630,0rcu_preempt3-21ksoftirqd/009:24:580
81630,0rcu_preempt3-21ksoftirqd/009:14:420
81630,0rcu_preempt3-21ksoftirqd/008:44:280
81630,0rcu_preempt3-21ksoftirqd/007:25:060
81630,0rcu_preempt17411-21munin-node0
81620,0rcu_preempt3-21ksoftirqd/011:41:130
81620,0rcu_preempt3-21ksoftirqd/010:54:560
81620,0rcu_preempt3-21ksoftirqd/009:09:520
81620,0rcu_preempt3-21ksoftirqd/009:04:490
81620,0rcu_preempt3-21ksoftirqd/007:14:270
81620,0rcu_preempt3-21ksoftirqd/007:09:470
81620,0rcu_preempt19-21ksoftirqd/107:19:271
81610,0rcu_preempt3-21ksoftirqd/010:34:510
81610,0rcu_preempt3-21ksoftirqd/007:20:030
81610,0rcu_preempt3-21ksoftirqd/007:20:030
4350610,0irq/32-4330000054-21kswapd007:54:421
81600,0rcu_preempt3-21ksoftirqd/008:42:340
81590,0rcu_preempt3-21ksoftirqd/010:45:100
81590,0rcu_preempt19-21ksoftirqd/109:59:291
81590,0rcu_preempt19-21ksoftirqd/109:24:581
10050580,0irq/346-484840054-21kswapd012:09:561
81570,0rcu_preempt19-21ksoftirqd/112:14:301
81560,0rcu_preempt0-21swapper/108:14:501
81540,0rcu_preempt19-21ksoftirqd/111:47:181
81520,0rcu_preempt19-21ksoftirqd/108:59:531
10050510,0irq/346-48484001239-21snmpd09:53:541
81500,0rcu_preempt19-21ksoftirqd/112:19:381
81490,0rcu_preempt19-21ksoftirqd/111:03:221
81490,0rcu_preempt19-21ksoftirqd/109:13:241
247982480,0sleep19950irq/345-484840011:37:481
10050480,0irq/346-484840029658-21ssh10:58:291
10050480,0irq/346-484840024219-1kworker/1:6H09:29:391
10050480,0irq/346-48484000-21swapper/111:29:571
81470,0rcu_preempt19-21ksoftirqd/110:44:401
29912470,0sleep19950irq/345-484840009:36:411
13150470,0irq/301-480200054-21kswapd007:59:441
10050470,0irq/346-484840031655-21ssh10:14:531
10050470,0irq/346-484840011500-1kworker/1:2H12:06:141
123242460,0sleep19950irq/345-484840007:20:081
123242460,0sleep19950irq/345-484840007:20:081
10050460,0irq/346-48484007715-1kworker/1:1H10:44:111
10050460,0irq/346-484840017000-1kworker/1:4H09:19:291
10050460,0irq/346-484840017000-1kworker/1:4H09:19:291
10050460,0irq/346-48484000-21swapper/111:12:221
9950450,0irq/345-484840011200-1kworker/1:0H10:31:351
9950450,0irq/345-484840011200-1kworker/1:0H10:31:351
81450,0rcu_preempt19-21ksoftirqd/109:55:011
10050450,0irq/346-48484000-21swapper/110:27:001
81430,0rcu_preempt24278-21ping08:09:391
81430,0rcu_preempt19-21ksoftirqd/110:04:411
10050430,0irq/346-48484008090-21cyclictest11:27:431
81420,0rcu_preempt20113-21kworker/1:008:39:461
10050420,0irq/346-484840031357-1kworker/1:1H09:44:581
9950410,0irq/345-48484006630-21aten_rapower_cu07:04:400
81410,0rcu_preempt9950irq/345-484840010:52:211
81410,0rcu_preempt31164-21apt-get08:19:381
81410,0rcu_preempt19-21ksoftirqd/107:08:481
81410,0rcu_preempt0-21swapper/108:54:411
9950400,0irq/345-4848400751-21rngd12:34:421
81400,0rcu_preempt19-21ksoftirqd/111:57:321
81400,0rcu_preempt19-21ksoftirqd/107:44:501
180502400,0sleep19950irq/345-484840007:39:321
1699400,0migration/13546-21sh11:51:491
9950390,0irq/345-48484000-21swapper/107:24:571
10050390,0irq/346-484840054-21kswapd012:31:461
10050390,0irq/346-48484000-21swapper/112:29:011
10050390,0irq/346-48484000-21swapper/110:35:011
81380,0rcu_preempt0-21swapper/110:09:591
10050380,0irq/346-484840024278-21ping08:04:451
81360,0rcu_preempt3498-21ssh11:07:361
10050360,0irq/346-48484000-21swapper/107:31:261
81350,0rcu_preempt0-21swapper/108:29:431
10050350,0irq/346-48484008090-21cyclictest08:34:391
81340,0rcu_preempt13901-21if_eth009:04:471
10050340,0irq/346-484840022809-21munin-run07:54:261
10050340,0irq/346-48484000-21swapper/108:27:071
10050330,0irq/346-48484000-21swapper/108:44:401
10050330,0irq/346-48484000-21swapper/107:37:541
81320,0rcu_preempt19-21ksoftirqd/107:09:421
10050320,0irq/346-48484008423-1kworker/1:1H08:49:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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