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2024-06-18 - 06:50

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, slot #3

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack7slot3s.osadl.org (updated Tue Jun 18, 2024 03:36:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9503997829,27cyclictest23511-21timerandwakeup03:08:180
88632612,49sleep30-21swapper/302:29:083
9503996045,4cyclictest0-21swapper/002:52:560
950399591,43cyclictest0-21swapper/003:18:020
9503995844,3cyclictest101ktimersoftd/002:40:200
950399581,44cyclictest32407-21latency03:33:250
950399551,31cyclictest24787-21ls03:13:090
9503995510,26cyclictest22228-21apt03:07:470
950399542,42cyclictest0-21swapper/002:43:120
950399535,35cyclictest0-21swapper/002:52:480
950399531,40cyclictest0-21swapper/003:28:230
9503995138,4cyclictest8050irq/56-dwc_otg_02:58:080
9503995138,4cyclictest8050irq/56-dwc_otg_02:58:080
950399491,34cyclictest29983-21latency_hist03:27:480
951899481,4cyclictest8150irq/56-dwc_otg_02:52:542
9503994811,26cyclictest9550irq/48-DMA14:55:080
9503994811,26cyclictest9550irq/48-DMA14:55:080
77072483,34sleep00-21swapper/002:28:080
951899456,25cyclictest22233-20Xorg03:17:572
951099453,11cyclictest0-21swapper/103:12:541
78262437,24sleep20-21swapper/202:28:102
9510994215,4cyclictest22233-20Xorg03:17:551
952199417,24cyclictest0-21swapper/303:17:573
79882416,24sleep18063-21/usr/sbin/munin02:28:131
9510994011,14cyclictest7950irq/56-dwc_otg03:10:351
178982400,1sleep10-21swapper/102:53:141
9521993914,6cyclictest22233-20Xorg03:17:473
120732390,1sleep30-21swapper/302:38:073
951899379,4cyclictest0-21swapper/203:17:482
9521993618,4cyclictest29931-21latency_hist03:27:483
9518993615,4cyclictest301ktimersoftd/202:42:582
951099369,6cyclictest23-21ksoftirqd/102:42:471
951099362,27cyclictest0-21swapper/103:27:541
9521993514,5cyclictest1292-21runrttasks02:44:343
951099354,8cyclictest0-21swapper/103:33:001
951099354,6cyclictest23-21ksoftirqd/102:48:081
952199348,4cyclictest39-21ksoftirqd/303:28:233
951899349,18cyclictest0-21swapper/203:08:162
9518993413,8cyclictest31853-21/usr/sbin/munin03:33:252
951099346,5cyclictest7950irq/56-dwc_otg02:33:141
951099346,5cyclictest7950irq/56-dwc_otg02:33:141
952199339,5cyclictest22789-21fschecks_count03:08:053
952199337,8cyclictest8150irq/56-dwc_otg_03:07:473
9510993210,6cyclictest131-21systemd-journal03:00:471
9510993210,6cyclictest131-21systemd-journal03:00:471
9521993112,10cyclictest7155-21kworker/3:202:48:023
9521993110,13cyclictest10248-21ntp_states02:33:073
9521993110,13cyclictest10248-21ntp_states02:33:073
9518993113,12cyclictest301ktimersoftd/202:32:552
9518993113,12cyclictest301ktimersoftd/202:32:552
9518993111,8cyclictest301ktimersoftd/202:57:552
9518993111,8cyclictest301ktimersoftd/202:57:552
951099313,11cyclictest21-21rcuc/103:23:061
952199301,9cyclictest0-21swapper/302:58:083
952199301,9cyclictest0-21swapper/302:58:083
9521993011,4cyclictest16925-21/usr/sbin/munin02:53:183
951099309,5cyclictest21798-21unixbench_singl03:03:241
951899297,5cyclictest8050irq/56-dwc_otg_03:07:472
151702290,2sleep20-21swapper/202:48:042
951899288,10cyclictest8150irq/56-dwc_otg_03:28:252
9518992813,7cyclictest301ktimersoftd/202:38:132
952199274,4cyclictest8050irq/56-dwc_otg_03:33:023
951899272,4cyclictest28256-21apt-get03:22:592
951099271,9cyclictest7950irq/56-dwc_otg02:43:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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