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2025-05-05 - 01:02

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 792 highest latencies:
System rackaslot5s.osadl.org (updated Sun May 04, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81980,0rcu_preempt22252-21kworker/0:110:27:070
81940,0rcu_preempt3-21ksoftirqd/011:43:110
81910,0rcu_preempt3-21ksoftirqd/007:23:230
81890,0rcu_preempt3-21ksoftirqd/007:38:220
81880,0rcu_preempt3-21ksoftirqd/011:27:590
81760,0rcu_preempt21011-21kworker/0:110:08:130
10050760,0irq/346-48484007140-1kworker/0:0H11:57:160
81730,0rcu_preempt3-21ksoftirqd/012:17:150
81720,0rcu_preempt3-21ksoftirqd/009:26:250
10050720,0irq/346-484840012449-1kworker/0:2H11:32:590
81710,0rcu_preempt3-21ksoftirqd/012:27:580
81710,0rcu_preempt3-21ksoftirqd/008:25:000
81700,0rcu_preempt3-21ksoftirqd/008:07:470
81700,0rcu_preempt28882-1kworker/0:2H11:18:140
10050700,0irq/346-484840012952-1kworker/0:2H09:53:550
81680,0rcu_preempt3-21ksoftirqd/009:32:290
81670,0rcu_preempt3-21ksoftirqd/010:29:430
81650,0rcu_preempt3-21ksoftirqd/007:08:130
81640,0rcu_preempt8792-21kworker/0:108:13:140
81640,0rcu_preempt21011-21kworker/0:110:05:480
81640,0rcu_preempt21011-21kworker/0:110:05:480
81620,0rcu_preempt3-21ksoftirqd/012:24:570
81610,0rcu_preempt5848-21apt-get07:48:000
81610,0rcu_preempt3-21ksoftirqd/009:03:070
10050610,0irq/346-484840054-21kswapd011:38:161
81600,0rcu_preempt3-21ksoftirqd/011:02:260
81600,0rcu_preempt3-21ksoftirqd/010:38:290
81600,0rcu_preempt29251-21kworker/0:211:08:100
81600,0rcu_preempt29251-21kworker/0:211:08:100
81590,0rcu_preempt3-21ksoftirqd/008:38:140
10050590,0irq/346-484840054-21kswapd012:05:150
81580,0rcu_preempt8767-21ping08:13:191
81580,0rcu_preempt3-21ksoftirqd/011:48:150
81580,0rcu_preempt3-21ksoftirqd/010:17:580
81580,0rcu_preempt3-21ksoftirqd/008:17:580
10050580,0irq/346-48484000-21swapper/009:48:070
81570,0rcu_preempt19340-21users09:33:190
10050570,0irq/346-484840012466-21taskset12:07:191
81560,0rcu_preempt3-21ksoftirqd/009:43:040
81560,0rcu_preempt19-21ksoftirqd/107:24:501
81550,0rcu_preempt3-21ksoftirqd/009:13:100
81550,0rcu_preempt3-21ksoftirqd/007:58:200
81540,0rcu_preempt3-21ksoftirqd/012:32:580
81540,0rcu_preempt3-21ksoftirqd/011:23:070
81540,0rcu_preempt3-21ksoftirqd/008:53:080
81540,0rcu_preempt19-21ksoftirqd/110:13:051
10050540,0irq/346-484840012398-1kworker/1:0H09:36:361
81530,0rcu_preempt8767-21ping08:02:580
81530,0rcu_preempt3-21ksoftirqd/012:02:230
81530,0rcu_preempt3-21ksoftirqd/010:33:130
81530,0rcu_preempt3-21ksoftirqd/010:13:180
81530,0rcu_preempt12952-1kworker/dying10:00:100
81530,0rcu_preempt11974-21apt-get10:52:570
81520,0rcu_preempt3-21ksoftirqd/012:08:010
81520,0rcu_preempt3-21ksoftirqd/010:51:510
81520,0rcu_preempt32128-21apt-get09:08:000
81520,0rcu_preempt19-21ksoftirqd/111:19:191
81510,0rcu_preempt3-21ksoftirqd/011:38:310
81510,0rcu_preempt3-21ksoftirqd/007:12:480
81510,0rcu_preempt21011-21kworker/0:109:41:040
81510,0rcu_preempt19-21ksoftirqd/108:18:291
81510,0rcu_preempt16902-21kworker/0:008:43:040
81510,0rcu_preempt15188-21kworker/0:209:18:080
81510,0rcu_preempt1250-21lldpd07:03:100
10050510,0irq/346-48484001059-1kworker/1:3H11:59:061
81500,0rcu_preempt8792-21kworker/0:107:57:410
81500,0rcu_preempt3-21ksoftirqd/011:13:150
81500,0rcu_preempt3-21ksoftirqd/010:43:150
81500,0rcu_preempt3-21ksoftirqd/010:43:150
81500,0rcu_preempt3-21ksoftirqd/008:52:160
81500,0rcu_preempt21899-21kworker/0:212:18:010
10050500,0irq/346-484840054-21kswapd011:25:171
10050500,0irq/346-484840054-21kswapd009:45:201
10050500,0irq/346-484840028836-21ssh12:23:531
81480,0rcu_preempt3-21ksoftirqd/011:03:040
81480,0rcu_preempt21283-21ps08:33:110
10050480,0irq/346-484840028770-21ssh10:30:501
81470,0rcu_preempt3-21ksoftirqd/008:28:060
81470,0rcu_preempt3-21ksoftirqd/007:42:540
81470,0rcu_preempt0-21swapper/112:17:591
9950460,0irq/345-48484007882-1kworker/1:0H10:07:591
81460,0rcu_preempt19-21ksoftirqd/107:38:111
10050460,0irq/346-484840054-21kswapd009:13:161
10050460,0irq/346-484840016901-21ssh12:11:581
81450,0rcu_preempt3-21ksoftirqd/008:57:550
81450,0rcu_preempt19-21ksoftirqd/109:18:191
10050450,0irq/346-484840024135-21ssh09:40:091
10050450,0irq/346-484840023548-21ssh11:43:351
10050450,0irq/346-484840013648-21ssh11:33:141
81440,0rcu_preempt3-21ksoftirqd/007:22:310
81440,0rcu_preempt27453-21meminfo11:48:091
81440,0rcu_preempt19-21ksoftirqd/110:45:271
81440,0rcu_preempt19-21ksoftirqd/110:45:271
81440,0rcu_preempt19-21ksoftirqd/107:33:251
81440,0rcu_preempt19-21ksoftirqd/107:18:181
10050440,0irq/346-484840054-21kswapd010:27:281
10050440,0irq/346-484840031097-21ssh09:49:291
81430,0rcu_preempt19-21ksoftirqd/111:53:151
81430,0rcu_preempt19-21ksoftirqd/110:52:581
81430,0rcu_preempt19-21ksoftirqd/109:28:141
81430,0rcu_preempt19-21ksoftirqd/107:28:011
81430,0rcu_preempt19-21ksoftirqd/107:28:011
25026994320,0cyclictest28298-21ping07:28:000
25026994320,0cyclictest28298-21ping07:28:000
10050430,0irq/346-4848400753-21rngd11:31:391
10050430,0irq/346-484840030246-21ssh11:16:511
81420,0rcu_preempt4285-21latency_hist09:57:471
81420,0rcu_preempt31724-21date12:27:461
81420,0rcu_preempt19-21ksoftirqd/112:33:171
81420,0rcu_preempt19-21ksoftirqd/110:57:471
81420,0rcu_preempt19-21ksoftirqd/110:47:551
81420,0rcu_preempt19-21ksoftirqd/107:54:071
81420,0rcu_preempt19-21ksoftirqd/107:43:241
2502699426,0cyclictest28298-21ping07:33:010
10050420,0irq/346-484840020586-21ssh12:15:321
81410,0rcu_preempt19-21ksoftirqd/107:03:041
81400,0rcu_preempt19-21ksoftirqd/111:08:151
81400,0rcu_preempt19-21ksoftirqd/111:08:151
81400,0rcu_preempt19-21ksoftirqd/111:03:351
81400,0rcu_preempt19-21ksoftirqd/110:33:311
81400,0rcu_preempt19-21ksoftirqd/110:21:321
81400,0rcu_preempt19-21ksoftirqd/109:54:531
81400,0rcu_preempt19-21ksoftirqd/108:38:021
10050400,0irq/346-48484008678-1kworker/1:0H07:58:211
81390,0rcu_preempt19-21ksoftirqd/110:38:311
81390,0rcu_preempt19-21ksoftirqd/110:03:051
81390,0rcu_preempt19-21ksoftirqd/110:03:051
81390,0rcu_preempt19-21ksoftirqd/109:08:041
81390,0rcu_preempt19-21ksoftirqd/108:12:471
10050390,0irq/346-484840013496-21ssh09:26:131
81380,0rcu_preempt19-21ksoftirqd/108:28:221
81380,0rcu_preempt19-21ksoftirqd/108:02:481
81360,0rcu_preempt19-21ksoftirqd/108:58:001
81360,0rcu_preempt19-21ksoftirqd/108:53:121
81360,0rcu_preempt19-21ksoftirqd/108:37:461
81360,0rcu_preempt19-21ksoftirqd/108:23:191
81360,0rcu_preempt19-21ksoftirqd/107:50:381
10050360,0irq/346-484840031883-21munin-run09:07:461
81350,0rcu_preempt19-21ksoftirqd/108:47:471
81350,0rcu_preempt19-21ksoftirqd/107:13:111
81340,0rcu_preempt19-21ksoftirqd/107:08:021
81320,0rcu_preempt19-21ksoftirqd/108:43:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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