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2024-07-13 - 21:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #4

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 50 highest latencies:
System rackeslot4s.osadl.org (updated Sat Jul 13, 2024 12:44:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1188979994943,4cyclictest3067417-21systemd-journal12:10:013
1188979994038,1cyclictest1272992-21lspci08:25:463
1188976993936,2cyclictest1509330-21kworker/u8:1+events_unbound11:55:132
1188970993832,4cyclictest74-21kswapd012:15:001
1188967993733,3cyclictest1547513-21kworker/u8:3+events_unbound12:00:130
1188976993429,4cyclictest1279077-21latency_hist08:35:012
1188967993329,3cyclictest1284255-21kworker/u8:1+events_unbound09:05:000
1188976993229,2cyclictest1408135-21kworker/u8:1+flush-259:010:20:112
1188967993228,3cyclictest1305537-21kworker/u8:4+flush-259:009:15:110
1188976993128,2cyclictest1294576-21kworker/u8:0+flush-259:009:10:412
1188976993027,2cyclictest1331447-21kworker/u8:2+events_unbound09:30:212
1188967992924,4cyclictest3067417-21systemd-journal10:30:000
1188976992825,2cyclictest1530385-21kworker/u8:2+flush-259:011:30:012
1188976992825,2cyclictest1331447-21kworker/u8:2+flush-259:010:25:262
1188970992825,2cyclictest1331447-21kworker/u8:2+flush-259:009:45:291
1188970992825,2cyclictest1331447-21kworker/u8:2+flush-259:009:45:281
1188976992724,2cyclictest1509330-21kworker/u8:1+events_unbound11:40:142
1188970992725,1cyclictest1606832-21kworker/u8:1+flush-259:012:35:291
1188970992724,2cyclictest74-21kswapd012:15:121
1188979992619,5cyclictest1231042-21latency_hist07:50:013
1188976992623,2cyclictest1469268-21kworker/u8:1+flush-259:011:05:012
1188976992623,2cyclictest1331447-21kworker/u8:2+flush-259:010:35:262
1188976992623,2cyclictest1284255-21kworker/u8:1+flush-259:008:45:272
1188976992623,2cyclictest1252354-21kworker/u8:1+flush-259:008:26:102
1188976992622,3cyclictest1241324-21latency_hist08:00:012
1188970992623,2cyclictest1331447-21kworker/u8:2+events_unbound10:26:031
1188979992520,3cyclictest1593756-21kworker/u8:4+events_unbound12:20:143
1188976992522,2cyclictest1173563-21kworker/u8:3+flush-259:007:15:282
1188976992520,4cyclictest1460080-21ssh10:40:552
1188970992523,2cyclictest1530385-21kworker/u8:2+flush-259:011:45:111
1188967992522,2cyclictest1331447-21kworker/u8:2+flush-259:010:15:330
1188967992520,3cyclictest3067417-21systemd-journal10:45:000
1188979992420,3cyclictest516-21rs:main3
1188979992420,3cyclictest1509330-21kworker/u8:1+flush-259:011:25:013
1188979992419,3cyclictest1-21systemd12:00:003
1188976992420,3cyclictest1368168-21ssh09:42:152
1188970992421,2cyclictest74-21kswapd012:25:131
1188970992420,3cyclictest1391725-21ssh09:58:071
1188967992421,2cyclictest74-21kswapd011:45:000
1188979992320,2cyclictest2904-21cron08:15:003
1188979992319,3cyclictest1594136-21ssh12:10:113
1188976992320,2cyclictest1485434-21kworker/u8:0+events_unbound11:35:332
1188976992319,3cyclictest1478305-21ssh10:55:162
1188976992319,3cyclictest1393120-21apt-get10:00:102
1188976992315,2cyclictest1385457-21kworker/u8:0+events_unbound10:30:152
1188970992318,4cyclictest1362049-21latency_hist09:40:011
1188967992320,2cyclictest1274096-21kworker/u8:3+flush-259:008:55:190
1188979992216,4cyclictest1563353-21/usr/sbin/munin11:50:153
1188976992219,2cyclictest1509330-21kworker/u8:1+flush-259:011:15:272
1188976992219,2cyclictest1331447-21kworker/u8:2+events_unbound10:50:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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