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2025-10-19 - 14:14

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 Sun Oct 19, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811140,0rcu_preempt6822-21meminfo00:25:351
811140,0rcu_preempt19-21ksoftirqd/120:30:251
811100,0rcu_preempt2272-21ssh23:41:001
811100,0rcu_preempt19-21ksoftirqd/122:42:391
811090,0rcu_preempt19-21ksoftirqd/121:49:291
81970,0rcu_preempt19-21ksoftirqd/123:19:061
81960,0rcu_preempt54-21kswapd000:19:561
81950,0rcu_preempt19-21ksoftirqd/122:50:531
81910,0rcu_preempt19-21ksoftirqd/121:23:071
81900,0rcu_preempt0-21swapper/123:27:241
81890,0rcu_preempt54-21kswapd000:10:321
81890,0rcu_preempt19-21ksoftirqd/100:30:291
81890,0rcu_preempt0-21swapper/122:00:371
81880,0rcu_preempt19-21ksoftirqd/122:37:391
81870,0rcu_preempt19-21ksoftirqd/122:56:581
81870,0rcu_preempt19-21ksoftirqd/122:47:431
81860,0rcu_preempt54-21kswapd021:07:171
81860,0rcu_preempt0-21swapper/121:35:441
81850,0rcu_preempt54-21kswapd023:09:241
81850,0rcu_preempt19-21ksoftirqd/122:27:021
81850,0rcu_preempt19-21ksoftirqd/122:12:521
81840,0rcu_preempt19-21ksoftirqd/122:08:391
81840,0rcu_preempt19-21ksoftirqd/121:32:191
81830,0rcu_preempt19-21ksoftirqd/123:01:561
81820,0rcu_preempt54-21kswapd000:00:201
81810,0rcu_preempt753-21rngd23:54:131
81780,0rcu_preempt19-21ksoftirqd/121:13:341
81770,0rcu_preempt2577-21ssh00:20:281
81770,0rcu_preempt2577-21ssh00:20:281
81770,0rcu_preempt19-21ksoftirqd/123:30:541
81740,0rcu_preempt23031-21kworker/1:023:58:481
81740,0rcu_preempt19-21ksoftirqd/120:20:311
81740,0rcu_preempt19-21ksoftirqd/120:15:341
81720,0rcu_preempt19-21ksoftirqd/122:16:391
81710,0rcu_preempt28454-21apt-get22:20:231
81710,0rcu_preempt19-21ksoftirqd/123:20:401
81700,0rcu_preempt19-21ksoftirqd/121:52:171
81700,0rcu_preempt19-21ksoftirqd/120:10:271
81670,0rcu_preempt19-21ksoftirqd/122:32:281
81670,0rcu_preempt0-21swapper/123:12:041
81650,0rcu_preempt19-21ksoftirqd/119:55:331
81640,0rcu_preempt19-21ksoftirqd/121:56:591
81640,0rcu_preempt19-21ksoftirqd/121:16:371
81640,0rcu_preempt19-21ksoftirqd/100:05:581
81630,0rcu_preempt19-21ksoftirqd/121:41:071
81630,0rcu_preempt19-21ksoftirqd/121:26:191
81630,0rcu_preempt0-21swapper/120:43:151
2053599632,0cyclictest27600-21diskmemload22:20:570
81620,0rcu_preempt19-21ksoftirqd/123:37:491
81620,0rcu_preempt19-21ksoftirqd/119:10:251
81610,0rcu_preempt3-21ksoftirqd/022:57:000
81610,0rcu_preempt19-21ksoftirqd/123:45:231
2053599613,0cyclictest0-21swapper/021:09:360
20535996110,0cyclictest4254-21munin-node0
81600,0rcu_preempt54-21kswapd020:55:281
81600,0rcu_preempt22807-21apt-get20:50:231
2053599602,0cyclictest0-21swapper/023:30:270
2053599602,0cyclictest0-21swapper/023:25:260
2053599602,0cyclictest0-21swapper/021:00:290
81590,0rcu_preempt19-21ksoftirqd/120:35:301
2053599597,0cyclictest0-21swapper/023:42:140
2053599583,0cyclictest0-21swapper/023:40:100
2053599583,0cyclictest0-21swapper/023:00:540
2053599582,0cyclictest27600-21diskmemload00:27:050
2053599582,0cyclictest22784-21runrttasks00:05:300
2053599582,0cyclictest0-21swapper/021:50:220
2053599582,0cyclictest0-21swapper/019:50:320
2053599581,0cyclictest7169-21munin-node0
2053599581,0cyclictest0-21swapper/022:46:530
20535995810,0cyclictest0-21swapper/022:11:340
81570,0rcu_preempt19-21ksoftirqd/120:06:111
2053599575,0cyclictest3-21ksoftirqd/021:13:060
2053599573,0cyclictest0-21swapper/021:30:440
2053599573,0cyclictest0-21swapper/020:30:390
2053599572,0cyclictest18134-1kworker/0:0H23:23:550
2053599572,0cyclictest0-21swapper/022:05:310
2053599572,0cyclictest0-21swapper/019:55:160
81560,0rcu_preempt19-21ksoftirqd/120:04:281
81560,0rcu_preempt19-21ksoftirqd/119:45:281
2053599562,0cyclictest29000-21ssh21:43:360
2053599562,0cyclictest0-21swapper/023:49:580
2053599562,0cyclictest0-21swapper/021:30:020
20535995613,0cyclictest0-21swapper/022:25:460
2053599552,0cyclictest2022-21ssh00:20:040
2053599552,0cyclictest0-21swapper/021:58:260
81540,0rcu_preempt19-21ksoftirqd/120:25:421
2053599543,0cyclictest0-21swapper/023:15:280
2053599543,0cyclictest0-21swapper/022:51:080
2053599543,0cyclictest0-21swapper/021:24:510
20535995418,0cyclictest0-21swapper/000:22:120
20535995418,0cyclictest0-21swapper/000:22:120
20535995413,0cyclictest0-21swapper/022:30:420
2053599541,0cyclictest10513-21ssh00:30:350
20535995410,0cyclictest30795-21fschecks_count19:35:360
81530,0rcu_preempt22254-21ssh21:35:350
81530,0rcu_preempt19-21ksoftirqd/121:00:341
81530,0rcu_preempt19-21ksoftirqd/119:50:251
2053599534,0cyclictest23846-21grep19:15:120
2053599533,0cyclictest0-21swapper/022:41:540
2053599532,0cyclictest0-21swapper/022:37:020
20535995313,0cyclictest0-21swapper/023:55:310
2053599522,0cyclictest0-21swapper/023:05:280
81510,0rcu_preempt3-21ksoftirqd/023:50:410
81510,0rcu_preempt19-21ksoftirqd/119:24:351
2053599513,0cyclictest0-21swapper/022:01:330
2053599512,0cyclictest23824-21ping19:15:340
2053599512,0cyclictest23824-21ping19:15:340
2053599512,0cyclictest0-21swapper/020:58:550
2053599512,0cyclictest0-21swapper/020:12:550
2053599512,0cyclictest0-21swapper/000:03:350
2053599511,0cyclictest23824-21ping19:20:510
81500,0rcu_preempt19-21ksoftirqd/119:05:261
2053599503,0cyclictest0-21swapper/019:25:200
2053599502,0cyclictest0-21swapper/021:45:250
2053599502,0cyclictest0-21swapper/019:30:280
81490,0rcu_preempt21168-21apt-get20:45:271
2053599492,0cyclictest0-21swapper/022:19:260
2053599492,0cyclictest0-21swapper/019:05:330
81460,0rcu_preempt3-21ksoftirqd/019:00:310
81460,0rcu_preempt19-21ksoftirqd/119:40:331
81460,0rcu_preempt19-21ksoftirqd/119:15:401
81460,0rcu_preempt19-21ksoftirqd/119:15:401
2053599462,0cyclictest0-21swapper/019:41:080
10050460,0irq/346-4848400171rcuc/119:40:111
81450,0rcu_preempt19-21ksoftirqd/119:29:281
81440,0rcu_preempt3-21ksoftirqd/020:15:320
81440,0rcu_preempt19-21ksoftirqd/119:31:261
10050440,0irq/346-484840020095-21sshd19:00:551
81430,0rcu_preempt3-21ksoftirqd/020:24:010
81430,0rcu_preempt3-21ksoftirqd/019:48:260
20535994312,0cyclictest0-21swapper/020:48:570
81400,0rcu_preempt3-21ksoftirqd/000:10:260
81390,0rcu_preempt3-21ksoftirqd/020:05:330
81380,0rcu_preempt3-21ksoftirqd/020:30:120
81370,0rcu_preempt3-21ksoftirqd/020:50:380
81370,0rcu_preempt3-21ksoftirqd/020:05:120
81350,0rcu_preempt3-21ksoftirqd/020:35:400
81340,0rcu_preempt3-21ksoftirqd/020:42:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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