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2025-07-04 - 07:28

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 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 the highest latencies:
System rackaslot5s.osadl.org (updated Fri Jul 04, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811300,0rcu_preempt3-21ksoftirqd/023:46:020
81980,0rcu_preempt3-21ksoftirqd/023:26:280
81950,0rcu_preempt3-21ksoftirqd/000:31:580
81790,0rcu_preempt7074-21kworker/0:221:09:470
81790,0rcu_preempt3-21ksoftirqd/023:31:360
81780,0rcu_preempt23486-21kworker/0:121:52:390
81770,0rcu_preempt3-21ksoftirqd/023:41:200
81750,0rcu_preempt3-21ksoftirqd/022:33:120
81750,0rcu_preempt3-21ksoftirqd/021:26:490
81740,0rcu_preempt3-21ksoftirqd/021:13:410
81730,0rcu_preempt3-21ksoftirqd/023:21:300
81730,0rcu_preempt3-21ksoftirqd/023:09:090
81730,0rcu_preempt3-21ksoftirqd/022:44:540
81730,0rcu_preempt3-21ksoftirqd/022:19:460
81730,0rcu_preempt3-21ksoftirqd/021:21:010
81720,0rcu_preempt4721-21apt-get21:02:030
81720,0rcu_preempt3-21ksoftirqd/022:49:290
81720,0rcu_preempt3-21ksoftirqd/022:22:240
81720,0rcu_preempt3-21ksoftirqd/022:22:240
81720,0rcu_preempt3-21ksoftirqd/021:39:180
81720,0rcu_preempt3-21ksoftirqd/019:47:030
81720,0rcu_preempt3-21ksoftirqd/000:12:100
81710,0rcu_preempt3-21ksoftirqd/000:10:510
81710,0rcu_preempt3-21ksoftirqd/000:10:510
81700,0rcu_preempt7074-21kworker/0:222:27:060
81700,0rcu_preempt3-21ksoftirqd/023:16:280
81700,0rcu_preempt3-21ksoftirqd/022:14:360
81700,0rcu_preempt3-21ksoftirqd/000:29:070
81690,0rcu_preempt3-21ksoftirqd/023:32:070
81690,0rcu_preempt3-21ksoftirqd/023:32:070
81690,0rcu_preempt3-21ksoftirqd/023:04:390
81690,0rcu_preempt3-21ksoftirqd/022:53:230
81690,0rcu_preempt3-21ksoftirqd/020:57:190
81690,0rcu_preempt3-21ksoftirqd/000:20:470
81680,0rcu_preempt3-21ksoftirqd/021:59:250
81670,0rcu_preempt3-21ksoftirqd/000:01:140
81670,0rcu_preempt24717-21ps20:22:191
81660,0rcu_preempt8606-21ssh21:47:100
81660,0rcu_preempt3-21ksoftirqd/020:32:120
81660,0rcu_preempt19-21ksoftirqd/122:02:211
81650,0rcu_preempt6203-21diskmemload23:05:171
81650,0rcu_preempt3-21ksoftirqd/023:52:470
81650,0rcu_preempt15391-21ping20:27:020
81640,0rcu_preempt9453-21df_abs00:22:060
81640,0rcu_preempt54-21kswapd022:03:510
81640,0rcu_preempt19-21ksoftirqd/120:32:161
81630,0rcu_preempt27411-21ssh00:02:190
81620,0rcu_preempt3-21ksoftirqd/022:37:060
81620,0rcu_preempt3-21ksoftirqd/021:27:210
81620,0rcu_preempt3-21ksoftirqd/019:07:030
81620,0rcu_preempt29591-21ntp_states20:37:170
81620,0rcu_preempt29591-21ntp_states20:37:170
81620,0rcu_preempt15391-21ping20:02:180
56992620,0chrt10050irq/346-484840019:25:580
81610,0rcu_preempt19-21ksoftirqd/123:52:141
81610,0rcu_preempt15391-21ping20:22:080
81610,0rcu_preempt15391-21ping20:07:140
81600,0rcu_preempt3-21ksoftirqd/019:12:020
81590,0rcu_preempt54-21kswapd019:37:111
81590,0rcu_preempt19-21ksoftirqd/120:05:201
81590,0rcu_preempt15391-21ping19:56:510
81580,0rcu_preempt753-21rngd22:52:091
81580,0rcu_preempt54-21kswapd020:42:220
81580,0rcu_preempt19-21ksoftirqd/123:42:111
81580,0rcu_preempt15391-21ping20:17:061
81570,0rcu_preempt19-21ksoftirqd/121:47:151
81570,0rcu_preempt19-21ksoftirqd/120:07:241
81560,0rcu_preempt6460-21ssh22:22:191
81560,0rcu_preempt6460-21ssh22:22:191
81560,0rcu_preempt15391-21ping20:17:030
81550,0rcu_preempt3-21ksoftirqd/022:57:110
81550,0rcu_preempt3-21ksoftirqd/022:57:110
81550,0rcu_preempt19-21ksoftirqd/123:11:511
81550,0rcu_preempt19-21ksoftirqd/121:39:521
81540,0rcu_preempt4643-21ntp_states21:42:160
81540,0rcu_preempt19-21ksoftirqd/123:38:141
81540,0rcu_preempt19-21ksoftirqd/123:08:031
81540,0rcu_preempt19-21ksoftirqd/122:08:381
81540,0rcu_preempt19-21ksoftirqd/119:29:141
81540,0rcu_preempt19-21ksoftirqd/119:12:161
81540,0rcu_preempt19-21ksoftirqd/100:05:261
81530,0rcu_preempt3-21ksoftirqd/023:50:430
81530,0rcu_preempt3-21ksoftirqd/022:07:050
81530,0rcu_preempt19-21ksoftirqd/123:33:281
81530,0rcu_preempt19-21ksoftirqd/123:33:281
81530,0rcu_preempt19-21ksoftirqd/123:29:301
81530,0rcu_preempt19-21ksoftirqd/123:17:171
81530,0rcu_preempt19-21ksoftirqd/122:13:521
81530,0rcu_preempt19-21ksoftirqd/121:22:141
81520,0rcu_preempt3-21ksoftirqd/019:45:370
81520,0rcu_preempt26987-21dropbear22:47:071
81520,0rcu_preempt2503-21ping19:32:040
81520,0rcu_preempt2503-21ping19:27:060
81520,0rcu_preempt21341-1kworker/1:3H21:27:211
81520,0rcu_preempt19-21ksoftirqd/121:33:551
81520,0rcu_preempt19-21ksoftirqd/120:12:131
81520,0rcu_preempt19-21ksoftirqd/119:49:171
81510,0rcu_preempt3-21ksoftirqd/021:32:180
81510,0rcu_preempt3-21ksoftirqd/020:52:120
81510,0rcu_preempt3-21ksoftirqd/020:12:170
81510,0rcu_preempt19-21ksoftirqd/100:21:411
81510,0rcu_preempt19-21ksoftirqd/100:07:171
81510,0rcu_preempt19-21ksoftirqd/100:07:171
81500,0rcu_preempt3-21ksoftirqd/020:47:140
81500,0rcu_preempt19-21ksoftirqd/121:42:271
81490,0rcu_preempt19-21ksoftirqd/123:26:211
81490,0rcu_preempt19-21ksoftirqd/121:07:541
81490,0rcu_preempt19-21ksoftirqd/121:02:121
81490,0rcu_preempt19-21ksoftirqd/120:50:521
10050490,0irq/346-484840029966-1kworker/0:1H19:03:240
81480,0rcu_preempt19-21ksoftirqd/121:58:421
31631994810,0cyclictest10772-21ssh21:12:061
81470,0rcu_preempt54-21kswapd000:16:511
3163199472,0cyclictest31741-21runrttasks20:43:431
81460,0rcu_preempt3-21ksoftirqd/019:57:110
3163199467,0cyclictest6203-21diskmemload22:39:331
3163199467,0cyclictest2878-21df19:17:101
3163199467,0cyclictest2878-21df19:17:101
3163199462,0cyclictest13110-21load21:52:141
3163199461,0cyclictest6203-21diskmemload23:57:041
3163199461,0cyclictest6203-21diskmemload00:32:021
81450,0rcu_preempt19-21ksoftirqd/119:57:171
3163199459,0cyclictest11687-1kworker/1:1H22:36:321
3163199458,0cyclictest17038-1kworker/1:0H21:21:201
3163199457,0cyclictest31629-21cyclictest00:27:041
3163199457,0cyclictest15572-21ssh23:48:171
3163199449,0cyclictest10929-21aten_rapower_po19:42:071
3163199448,0cyclictest4962-21ntpq19:22:231
3163199442,0cyclictest6203-21diskmemload22:17:031
81430,0rcu_preempt3-21ksoftirqd/019:37:090
81430,0rcu_preempt2503-21ping19:17:240
81430,0rcu_preempt2503-21ping19:17:240
81430,0rcu_preempt19-21ksoftirqd/119:36:181
3163199439,0cyclictest9233-21ssh00:22:021
3163199438,0cyclictest54-21kswapd022:59:251
3163199438,0cyclictest54-21kswapd022:59:251
3163199438,0cyclictest54-21kswapd022:27:041
3163199438,0cyclictest54-21kswapd020:52:161
3163199438,0cyclictest20336-1kworker/1:3H22:42:261
3163199437,0cyclictest3088-21apt-get20:57:061
81420,0rcu_preempt19-21ksoftirqd/120:37:031
81420,0rcu_preempt19-21ksoftirqd/120:37:031
3163199426,0cyclictest473-1kworker/1:3H19:11:501
31631994210,0cyclictest0-21swapper/120:26:541
3163199417,0cyclictest13660-1kworker/1:1H19:52:171
81390,0rcu_preempt19-21ksoftirqd/119:03:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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