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2023-01-29 - 16:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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 
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x86 Intel Atom E3940 @1600 MHz, Linux 4.16.15-rt7 (Profile)

Latency plot of shadow in rack #5, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 100 highest latencies:
System rack5slot3s.osadl.org (updated Sun Jan 29, 2023 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36622204166,25sleep20-21swapper/207:05:552
36512202164,25sleep10-21swapper/107:05:461
38092199163,24sleep30-21swapper/307:07:493
37622197162,22sleep00-21swapper/007:07:140
1322021630,4sleep2408499cyclictest08:40:252
4084999490,3cyclictest0-21swapper/210:54:422
226842810,2sleep2311ktimersoftd/207:50:152
302272600,1sleep20-21swapper/209:20:192
89842580,5sleep339-21rcuc/309:45:203
4084995046,3cyclictest0-21swapper/207:39:552
4084994844,3cyclictest0-21swapper/209:00:532
407499461,27cyclictest4196-21kworker/0:210:49:040
407499389,13cyclictest14775-21awk10:00:010
4074993813,12cyclictest1569-21munin-run09:30:010
407499352,14cyclictest25149-21munin-run09:10:020
409199341,15cyclictest0-21swapper/308:42:143
409199331,14cyclictest0-21swapper/311:55:333
409199331,13cyclictest0-21swapper/308:53:343
409199331,12cyclictest0-21swapper/311:19:583
409199321,13cyclictest0-21swapper/310:09:583
407499324,12cyclictest940-21awk08:15:010
407499322,14cyclictest25766-21munin-run10:25:000
407499322,12cyclictest27792-21kworker/0:110:51:140
407499322,10cyclictest20451-21kworker/0:009:00:280
407499321,9cyclictest704-21cat11:55:020
4091993118,8cyclictest0-21swapper/307:42:543
409199311,20cyclictest0-21swapper/308:38:303
409199311,15cyclictest0-21swapper/309:08:103
409199311,12cyclictest0-21swapper/308:21:503
407499318,3cyclictest30760-21kworker/0:008:15:300
409199301,14cyclictest0-21swapper/310:33:503
409199301,13cyclictest0-21swapper/312:27:253
409199301,13cyclictest0-21swapper/310:37:583
409199301,12cyclictest0-21swapper/309:26:543
409199301,12cyclictest0-21swapper/309:23:103
409199301,10cyclictest0-21swapper/309:34:453
407499305,12cyclictest31737-21munin-run09:25:010
409199291,20cyclictest0-21swapper/308:05:583
409199291,15cyclictest0-21swapper/307:33:263
409199291,13cyclictest0-21swapper/309:58:453
409199291,13cyclictest0-21swapper/309:51:583
409199291,13cyclictest0-21swapper/309:02:143
409199291,12cyclictest0-21swapper/309:42:293
409199291,12cyclictest0-21swapper/308:58:463
409199291,11cyclictest496-21jbd2/dm-0-808:00:283
409199291,11cyclictest0-21swapper/311:09:093
409199291,11cyclictest0-21swapper/310:23:183
58372280,4sleep011-21rcuc/008:25:210
409199281,19cyclictest0-21swapper/307:15:423
409199281,13cyclictest0-21swapper/310:46:143
409199281,12cyclictest0-21swapper/308:12:373
409199281,11cyclictest0-21swapper/312:08:453
409199281,11cyclictest0-21swapper/311:31:093
409199281,11cyclictest0-21swapper/310:01:423
409199281,10cyclictest0-21swapper/311:47:013
409199281,10cyclictest0-21swapper/310:57:183
407499287,3cyclictest21706-21kworker/0:311:35:280
92282271,3sleep10-21swapper/112:12:441
409199271,14cyclictest0-21swapper/310:52:143
409199271,13cyclictest0-21swapper/307:55:183
409199271,12cyclictest0-21swapper/312:33:573
409199271,12cyclictest0-21swapper/311:20:463
409199271,12cyclictest0-21swapper/311:13:543
409199271,12cyclictest0-21swapper/307:47:563
409199271,11cyclictest0-21swapper/307:38:143
409199271,11cyclictest0-21swapper/307:26:053
409199271,10cyclictest0-21swapper/312:14:453
407899278,16cyclictest4652-21smart_sda08:20:281
4074992712,3cyclictest25511-21kworker/0:210:27:120
409199261,9cyclictest0-21swapper/312:15:573
409199261,13cyclictest0-21swapper/311:01:023
409199261,12cyclictest0-21swapper/310:42:543
409199261,12cyclictest0-21swapper/310:42:543
409199261,11cyclictest0-21swapper/312:39:093
409199261,11cyclictest0-21swapper/312:22:053
409199261,11cyclictest0-21swapper/310:17:183
409199261,11cyclictest0-21swapper/308:29:093
409199261,11cyclictest0-21swapper/307:11:103
409199261,10cyclictest0-21swapper/312:01:573
409199261,10cyclictest0-21swapper/310:25:183
409199261,10cyclictest0-21swapper/309:38:213
409199261,10cyclictest0-21swapper/309:13:503
407899265,19cyclictest0-21swapper/110:15:471
407499262,12cyclictest2196-21munin-run10:45:010
407499262,12cyclictest2196-21munin-run10:45:010
407499262,11cyclictest22132-21kworker/0:107:50:160
409199251,12cyclictest0-21swapper/308:17:023
409199251,11cyclictest0-21swapper/311:51:173
409199251,11cyclictest0-21swapper/307:52:223
409199251,10cyclictest0-21swapper/311:42:223
407899255,3cyclictest1-21systemd07:15:001
407899252,20cyclictest30774-21munin-run11:50:011
407899252,16cyclictest86750irq/128-enp1s0-11:15:251
407499252,15cyclictest3929-21kworker/0:007:10:180
4078992411,3cyclictest3044-21/usr/sbin/munin12:00:291
407499248,3cyclictest21706-21kworker/0:311:30:180
407499246,9cyclictest10223-21kworker/0:310:00:180
407499242,2cyclictest5278-21kworker/0:108:48:160
407499242,10cyclictest21040-21kworker/0:210:15:420
4074992414,3cyclictest17322-21kworker/0:011:20:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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