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2024-11-24 - 07:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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.
Unexpectedly long latencies may be caused by SMIs
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 100 highest latencies:
System rack3slot6s.osadl.org (updated Sun Nov 24, 2024 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23031211894,19sleep00-21swapper/019:06:270
23128211495,13sleep20-21swapper/219:07:422
23020211492,16sleep10-21swapper/119:06:201
23044211396,12sleep30-21swapper/319:06:383
182692840,5sleep32334499cyclictest23:35:193
182692840,5sleep32334499cyclictest23:35:193
150692840,0sleep20-21swapper/223:32:062
155612830,1sleep015565-21aten2.4_r3power20:10:120
21912710,0sleep1221ktimersoftd/122:11:321
166592680,0sleep00-21swapper/023:34:360
157692660,0sleep10-21swapper/120:10:121
23340993616,18cyclictest0-21swapper/020:50:110
2334399279,17cyclictest0-21swapper/220:50:112
2334399234,17cyclictest0-21swapper/219:30:122
2334399221,19cyclictest0-21swapper/221:30:142
2334399211,18cyclictest0-21swapper/223:50:162
2334399211,18cyclictest0-21swapper/223:50:162
273592200,1sleep327368-21latency_hist20:39:593
2334399202,16cyclictest0-21swapper/222:18:032
2334399200,4cyclictest0-21swapper/222:53:032
2334399200,2cyclictest0-21swapper/222:35:132
23340992016,2cyclictest30376-21ssh23:15:100
73322190,0sleep30-21swapper/300:30:473
23343991916,2cyclictest781-21kworker/u8:121:07:052
23343991916,2cyclictest23035-21kworker/u8:020:28:042
2334399191,13cyclictest0-21swapper/200:12:042
2334099190,2cyclictest0-21swapper/019:10:100
210932190,1sleep0101ktimersoftd/021:57:440
2334399182,14cyclictest0-21swapper/221:49:042
23343991815,2cyclictest935-21kworker/u8:221:39:032
23343991815,2cyclictest781-21kworker/u8:120:56:042
23343991815,2cyclictest2830-21kworker/u8:220:10:042
23343991815,2cyclictest2830-21kworker/u8:220:08:052
23343991815,2cyclictest2830-21kworker/u8:219:58:042
23343991815,2cyclictest2808-21kworker/u8:021:01:032
23343991815,2cyclictest17493-21kworker/u8:120:36:042
23343991815,2cyclictest16647-21kworker/u8:021:54:032
23343991815,2cyclictest15580-21kworker/u8:219:22:052
2334499172,2cyclictest0-21swapper/322:19:043
2334499171,3cyclictest7173-21diskmemload22:55:253
23343991714,2cyclictest935-21kworker/u8:221:40:052
23343991714,2cyclictest31259-21kworker/u8:019:36:042
23343991714,2cyclictest25585-21kworker/u8:119:44:052
23343991714,2cyclictest23035-21kworker/u8:020:30:052
23343991714,2cyclictest22768-21kworker/u8:100:21:032
23343991714,2cyclictest22768-21kworker/u8:100:16:022
23343991714,2cyclictest21095-21kworker/u8:122:04:042
23343991714,2cyclictest17493-21kworker/u8:120:44:042
23343991714,2cyclictest17493-21kworker/u8:120:18:052
23342991714,2cyclictest3267-21kworker/u8:122:19:041
23342991714,2cyclictest29070-21kworker/u8:122:41:041
23344991613,2cyclictest2891-21kworker/u8:223:29:043
23344991613,2cyclictest28811-21kworker/u8:023:17:043
23344991613,2cyclictest27771-21kworker/u8:022:22:053
2334499161,2cyclictest30940-21ssh22:41:053
2334499161,13cyclictest0-21swapper/321:42:083
23343991613,2cyclictest9783-21kworker/u8:222:58:042
23343991613,2cyclictest9783-21kworker/u8:222:29:042
23343991613,2cyclictest7458-21kworker/u8:021:14:042
23343991613,2cyclictest3267-21kworker/u8:122:20:032
23343991613,2cyclictest31724-21kworker/u8:223:57:042
23343991613,2cyclictest28811-21kworker/u8:023:16:042
23343991613,2cyclictest21095-21kworker/u8:121:28:022
23343991613,2cyclictest17493-21kworker/u8:120:23:032
23343991613,2cyclictest15580-21kworker/u8:219:25:032
23343991613,2cyclictest13998-21kworker/u8:200:06:032
2334399161,2cyclictest0-21swapper/223:01:032
2334399161,13cyclictest27459-21ssh23:45:152
2334299161,13cyclictest9849-21df_inode19:55:161
2334299160,14cyclictest0-21swapper/122:52:301
23340991612,2cyclictest0-21swapper/021:25:170
23340991611,3cyclictest17490-21unixbench_singl23:00:260
2334099160,3cyclictest22002-21ssh23:40:070
23344991512,2cyclictest935-21kworker/u8:221:37:033
23344991511,3cyclictest9783-21kworker/u8:223:00:043
2334499151,12cyclictest21266-21ssh21:58:013
2334499150,2cyclictest0-21swapper/321:29:143
2334499150,13cyclictest0-21swapper/321:51:243
23343991512,2cyclictest2891-21kworker/u8:223:35:042
23343991512,2cyclictest2891-21kworker/u8:223:35:032
23343991512,2cyclictest22723-21kworker/u8:223:12:042
23343991512,2cyclictest16102-21kworker/u8:122:32:042
23343991512,2cyclictest0-21swapper/223:20:172
2334399150,2cyclictest0-21swapper/221:16:052
2334399150,2cyclictest0-21swapper/200:03:052
2334399150,10cyclictest0-21swapper/219:54:032
23342991512,2cyclictest203450irq/24-eth121:45:121
2334299150,14cyclictest0-21swapper/122:55:141
2334299150,13cyclictest7173-21diskmemload22:38:341
2334299150,13cyclictest0-21swapper/123:11:041
2334299150,11cyclictest0-21swapper/121:51:261
23340991512,2cyclictest0-21swapper/022:14:380
2334099150,2cyclictest0-21swapper/022:35:140
2334099150,13cyclictest0-21swapper/000:03:200
23344991411,2cyclictest5056-21kworker/u8:221:17:043
23344991411,2cyclictest31259-21kworker/u8:019:37:043
23344991411,2cyclictest17417-21kworker/u8:023:42:053
23344991411,2cyclictest12932-21kworker/u8:020:13:043
23344991411,2cyclictest0-21swapper/321:20:043
2334499141,11cyclictest20328-21ssh00:10:383
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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