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2024-04-26 - 15:55

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 Fri Apr 26, 2024 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13229210888,15sleep00-21swapper/007:08:570
11317210896,6sleep10-21swapper/107:05:011
13251210695,6sleep20-21swapper/207:09:152
11532210583,16sleep30-21swapper/307:05:073
248342860,1sleep30-21swapper/310:15:363
157762840,0sleep00-21swapper/010:41:180
27452800,1sleep30-21swapper/309:52:033
67902790,0sleep20-21swapper/212:18:242
227392760,0sleep30-21swapper/309:39:083
165162730,0sleep30-21swapper/309:31:193
91422710,1sleep00-21swapper/012:20:240
178422670,0sleep00-21swapper/012:30:180
13340993817,19cyclictest0-21swapper/011:25:100
13340993817,19cyclictest0-21swapper/010:05:120
145152270,1sleep1221ktimersoftd/108:35:101
1334199240,6cyclictest0-21swapper/108:55:131
300962230,0sleep30-21swapper/310:21:453
211032220,0sleep10-21swapper/112:34:351
1334399221,2cyclictest0-21swapper/311:10:123
13342992118,2cyclictest18994-21kworker/u8:309:44:042
1334299210,2cyclictest0-21swapper/210:25:092
1334299210,19cyclictest0-21swapper/212:00:112
13343992017,2cyclictest0-21swapper/312:35:093
13342992017,2cyclictest9751-21kworker/u8:009:28:042
13342992017,2cyclictest29598-21kworker/u8:011:42:042
13342992017,2cyclictest27845-21kworker/u8:109:17:042
13342992017,2cyclictest21022-21kworker/u8:010:22:042
13342992017,2cyclictest1322-21kworker/u8:011:04:042
13342992017,2cyclictest1162-21kworker/u8:008:17:042
13341992017,2cyclictest0-21swapper/112:35:091
3932190,0sleep00-21swapper/007:55:230
13342991916,2cyclictest2106-21kworker/u8:211:48:042
13342991916,2cyclictest18934-21kworker/u8:212:33:042
13342991916,2cyclictest16576-21kworker/u8:107:58:052
13342991916,2cyclictest14094-21kworker/u8:110:06:052
1334299191,2cyclictest0-21swapper/210:04:042
47582180,0sleep10-21swapper/109:19:501
1334399180,16cyclictest0-21swapper/310:40:103
13342991815,2cyclictest7651-21kworker/u8:209:58:042
13342991815,2cyclictest6629-21kworker/u8:211:11:032
13342991815,2cyclictest29598-21kworker/u8:011:33:052
13342991815,2cyclictest28956-21kworker/u8:210:59:042
13342991815,2cyclictest23850-21kworker/u8:209:08:042
13342991815,2cyclictest21022-21kworker/u8:010:12:042
13342991815,2cyclictest18025-21kworker/u8:009:00:042
13342991815,2cyclictest17873-21kworker/u8:211:21:032
13342991815,2cyclictest16576-21kworker/u8:107:37:042
13342991815,2cyclictest13935-21kworker/u8:208:34:052
13342991815,2cyclictest1162-21kworker/u8:008:06:052
1334299180,13cyclictest0-21swapper/211:15:042
13342991714,2cyclictest29598-21kworker/u8:011:51:042
13342991714,2cyclictest25834-21kworker/u8:007:41:052
13342991714,2cyclictest23850-21kworker/u8:209:14:042
13342991714,2cyclictest2043-21kworker/u8:112:35:032
13342991714,2cyclictest19301-21kworker/u8:007:30:052
13342991714,2cyclictest18025-21kworker/u8:008:58:052
13342991714,2cyclictest18025-21kworker/u8:008:47:032
13342991714,2cyclictest1162-21kworker/u8:008:26:042
13342991714,2cyclictest1162-21kworker/u8:008:10:042
1334299170,2cyclictest0-21swapper/211:09:052
1334299170,2cyclictest0-21swapper/209:20:122
1334399161,13cyclictest27713-21pzem_current12:05:213
13342991613,2cyclictest9671-21kworker/u8:108:42:042
13342991613,2cyclictest16576-21kworker/u8:107:18:052
13342991613,2cyclictest13935-21kworker/u8:208:39:042
13341991611,3cyclictest9404-21timerandwakeup12:20:301
1334199161,13cyclictest0-21swapper/107:45:161
1334199160,14cyclictest0-21swapper/109:45:111
1334199160,14cyclictest0-21swapper/109:45:101
1334099161,3cyclictest0-21swapper/011:11:460
13340991611,3cyclictest26354-21interrupts07:40:150
13340991611,3cyclictest0-21swapper/011:45:140
1334399152,9cyclictest0-21swapper/308:09:063
1334399151,12cyclictest561-21ssh09:15:113
1334399151,12cyclictest0-21swapper/312:04:043
1334399150,12cyclictest0-21swapper/311:15:053
13342991512,2cyclictest8850-21kworker/u8:010:35:042
13342991512,2cyclictest16576-21kworker/u8:108:01:032
13342991510,3cyclictest28568-21df_inode09:45:142
13342991510,3cyclictest28568-21df_inode09:45:132
1334299150,2cyclictest0-21swapper/212:06:042
13341991512,2cyclictest0-21swapper/107:10:101
13341991510,3cyclictest385-21aten2.4-expect09:50:121
13341991510,3cyclictest28120-21diskmemload11:40:211
1334199150,13cyclictest28120-21diskmemload11:32:201
1334099152,7cyclictest0-21swapper/008:50:000
1334099151,12cyclictest32320-21apt-get10:25:090
1334099151,12cyclictest1601-21ssh12:12:390
13340991510,3cyclictest16671-21ssh12:29:450
13340991510,3cyclictest16671-21ssh12:29:450
13340991510,3cyclictest14756-21grep11:15:280
1334099150,13cyclictest8066-21ssh09:22:280
1334099150,13cyclictest0-21swapper/010:02:200
1334099150,12cyclictest0-21swapper/009:08:580
233952140,2sleep023407-21munin-run07:35:010
1334399149,3cyclictest8472-21ssh09:23:103
1334399149,3cyclictest7541-21ssh11:08:363
1334399149,3cyclictest0-21swapper/309:56:023
1334399142,6cyclictest0-21swapper/307:15:003
1334399141,2cyclictest3283-21apt-get11:40:083
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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