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2026-03-06 - 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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Click here to display the system's profile data or here to proceed to next system.
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 all highest latencies:
System rackaslot5s.osadl.org (updated Fri Mar 06, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811070,0rcu_preempt19-21ksoftirqd/111:23:591
811010,0rcu_preempt19-21ksoftirqd/108:49:261
81960,0rcu_preempt3-21ksoftirqd/009:40:270
81930,0rcu_preempt9979-21ssh11:01:581
81910,0rcu_preempt54-21kswapd012:14:321
81850,0rcu_preempt19-21ksoftirqd/111:18:591
81770,0rcu_preempt19-21ksoftirqd/110:25:441
81750,0rcu_preempt3-21ksoftirqd/012:13:580
81740,0rcu_preempt3-21ksoftirqd/009:52:430
81740,0rcu_preempt19-21ksoftirqd/112:22:261
81740,0rcu_preempt19-21ksoftirqd/110:58:551
81700,0rcu_preempt3-21ksoftirqd/011:18:170
10050690,0irq/346-48484000-21swapper/009:20:330
9950670,0irq/345-48484000-21swapper/009:26:500
10050670,0irq/346-48484000-21swapper/009:54:220
9950660,0irq/345-4848400135592sleep011:38:240
9950660,0irq/345-48484000-21swapper/010:41:100
9950650,0irq/345-48484000-21swapper/011:51:200
9950650,0irq/345-48484000-21swapper/010:36:550
81650,0rcu_preempt3-21ksoftirqd/007:14:260
9950640,0irq/345-48484000-21swapper/011:47:110
81640,0rcu_preempt19-21ksoftirqd/112:37:561
9950630,0irq/345-48484000-21swapper/012:01:520
81630,0rcu_preempt19-21ksoftirqd/110:42:481
9950620,0irq/345-48484000-21swapper/010:11:110
81620,0rcu_preempt3-21ksoftirqd/008:09:180
81620,0rcu_preempt3-21ksoftirqd/008:09:180
9950610,0irq/345-48484000-21swapper/010:47:440
81610,0rcu_preempt3-21ksoftirqd/009:46:050
10050610,0irq/346-48484001939-1kworker/0:1H10:24:280
10050610,0irq/346-48484000-21swapper/011:03:120
81600,0rcu_preempt19-21ksoftirqd/112:08:451
81590,0rcu_preempt19-21ksoftirqd/111:51:371
81580,0rcu_preempt19-21ksoftirqd/112:03:371
81580,0rcu_preempt19-21ksoftirqd/111:32:311
81580,0rcu_preempt19-21ksoftirqd/109:37:561
81560,0rcu_preempt3-21ksoftirqd/011:24:310
81560,0rcu_preempt26860-21diskmemload10:18:051
81560,0rcu_preempt19-21ksoftirqd/110:00:251
81560,0rcu_preempt19-21ksoftirqd/109:24:421
81550,0rcu_preempt3-21ksoftirqd/009:13:570
81550,0rcu_preempt3-21ksoftirqd/007:54:180
81550,0rcu_preempt19-21ksoftirqd/110:22:181
81540,0rcu_preempt3-21ksoftirqd/010:14:250
81540,0rcu_preempt3-21ksoftirqd/007:04:230
81540,0rcu_preempt26806-21apt-get12:24:190
81540,0rcu_preempt26806-21apt-get12:24:190
81540,0rcu_preempt19-21ksoftirqd/110:45:021
81540,0rcu_preempt19-21ksoftirqd/109:54:311
10050540,0irq/346-484840024384-1kworker/0:0H11:19:290
81530,0rcu_preempt3-21ksoftirqd/012:19:340
81530,0rcu_preempt14693-21ssh11:06:370
81530,0rcu_preempt0-21swapper/108:09:251
81530,0rcu_preempt0-21swapper/108:09:251
81520,0rcu_preempt3-21ksoftirqd/010:54:260
81520,0rcu_preempt3-21ksoftirqd/008:39:220
81520,0rcu_preempt19-21ksoftirqd/108:14:291
81520,0rcu_preempt1627-21kworker/0:009:59:360
10050520,0irq/346-484840024358-1kworker/0:3H10:19:230
10050520,0irq/346-484840016874-1kworker/0:2H09:30:570
81510,0rcu_preempt3-21ksoftirqd/010:50:420
81510,0rcu_preempt25352-21ntpq09:39:321
81510,0rcu_preempt19-21ksoftirqd/111:04:311
81510,0rcu_preempt19-21ksoftirqd/108:34:181
81510,0rcu_preempt12436-1kworker/1:1H08:24:281
10050510,0irq/346-48484000-21swapper/011:10:270
81500,0rcu_preempt3-21ksoftirqd/012:07:370
81500,0rcu_preempt3-21ksoftirqd/008:14:090
81500,0rcu_preempt19-21ksoftirqd/111:49:001
81500,0rcu_preempt19-21ksoftirqd/110:49:231
81500,0rcu_preempt0-21swapper/010:05:070
10050500,0irq/346-484840054-21kswapd012:31:260
10050500,0irq/346-484840054-21kswapd010:29:260
10050500,0irq/346-484840054-21kswapd009:15:350
10050500,0irq/346-484840054-21kswapd009:15:350
81490,0rcu_preempt3-21ksoftirqd/011:39:260
81490,0rcu_preempt3-21ksoftirqd/011:31:490
81490,0rcu_preempt3-21ksoftirqd/008:24:270
81490,0rcu_preempt29369-21apt-get11:54:190
81490,0rcu_preempt21364-21php-cgi07:13:010
81480,0rcu_preempt3-21ksoftirqd/009:04:210
81480,0rcu_preempt3-21ksoftirqd/008:29:370
81480,0rcu_preempt3-21ksoftirqd/008:05:180
81480,0rcu_preempt19-21ksoftirqd/109:29:201
81480,0rcu_preempt19-21ksoftirqd/107:59:191
10050480,0irq/346-48484000-21swapper/012:17:300
10050480,0irq/346-48484000-21swapper/009:37:190
81470,0rcu_preempt3-21ksoftirqd/008:49:170
81470,0rcu_preempt3-21ksoftirqd/008:19:220
81470,0rcu_preempt23130-21ping07:44:190
81470,0rcu_preempt19-21ksoftirqd/112:29:191
81470,0rcu_preempt19-21ksoftirqd/110:04:191
81470,0rcu_preempt19-21ksoftirqd/109:49:171
81470,0rcu_preempt19-21ksoftirqd/109:16:231
81470,0rcu_preempt19-21ksoftirqd/109:16:231
81470,0rcu_preempt19-21ksoftirqd/108:20:111
10050470,0irq/346-48484005566-21ssh12:34:390
81460,0rcu_preempt3-21ksoftirqd/008:04:080
81460,0rcu_preempt3-21ksoftirqd/007:37:370
81460,0rcu_preempt19-21ksoftirqd/107:39:431
81460,0rcu_preempt19-21ksoftirqd/107:29:301
10050460,0irq/346-484840026080-1kworker/0:0H07:29:260
81450,0rcu_preempt19-21ksoftirqd/111:56:151
81450,0rcu_preempt19-21ksoftirqd/110:32:351
81450,0rcu_preempt19-21ksoftirqd/109:19:281
81450,0rcu_preempt19-21ksoftirqd/109:09:261
81450,0rcu_preempt19-21ksoftirqd/107:57:111
81450,0rcu_preempt19011-21diskstats08:44:240
9950440,0irq/345-48484003-21ksoftirqd/007:39:220
81440,0rcu_preempt19-21ksoftirqd/111:41:561
81440,0rcu_preempt19-21ksoftirqd/111:34:331
81440,0rcu_preempt19-21ksoftirqd/110:34:381
81430,0rcu_preempt19-21ksoftirqd/112:12:361
81430,0rcu_preempt19-21ksoftirqd/110:09:291
81430,0rcu_preempt19-21ksoftirqd/108:04:291
81430,0rcu_preempt19-21ksoftirqd/107:37:281
81430,0rcu_preempt0-21swapper/008:59:260
1599430,0migration/016411-21munin-node0
81420,0rcu_preempt3-21ksoftirqd/007:25:000
81420,0rcu_preempt19-21ksoftirqd/109:44:241
81420,0rcu_preempt19-21ksoftirqd/107:04:281
81410,0rcu_preempt19-21ksoftirqd/112:24:281
81410,0rcu_preempt19-21ksoftirqd/112:24:281
81410,0rcu_preempt19-21ksoftirqd/107:49:331
81410,0rcu_preempt19-21ksoftirqd/107:44:211
81400,0rcu_preempt3-21ksoftirqd/007:19:330
81400,0rcu_preempt19-21ksoftirqd/111:26:561
81400,0rcu_preempt19-21ksoftirqd/108:54:171
81400,0rcu_preempt19-21ksoftirqd/108:39:281
81400,0rcu_preempt19-21ksoftirqd/107:25:381
81400,0rcu_preempt19-21ksoftirqd/107:19:391
10050400,0irq/346-484840023249-1kworker/0:0H08:59:070
81390,0rcu_preempt19-21ksoftirqd/109:01:531
81390,0rcu_preempt19-21ksoftirqd/108:33:211
81390,0rcu_preempt19-21ksoftirqd/107:15:301
81390,0rcu_preempt1756-21users07:49:340
81380,0rcu_preempt19-21ksoftirqd/111:09:181
81380,0rcu_preempt19-21ksoftirqd/108:45:101
81370,0rcu_preempt19-21ksoftirqd/109:05:221
81370,0rcu_preempt19-21ksoftirqd/107:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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