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2022-07-05 - 08:08

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 
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x86 Intel Core i7-M620 @2667 MHz, Linux 4.19.106-rt45+ (Profile)

Latency plot of shadow in rack #3, slot #6
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Tue Jul 05, 2022 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17008211796,16sleep30-21swapper/319:08:223
17124210884,19sleep00-21swapper/019:09:520
17083210897,6sleep10-21swapper/119:09:201
16211210379,16sleep20-21swapper/219:05:162
215752710,1sleep321579-21head23:40:253
197112680,0sleep00-21swapper/019:15:160
17164993517,16cyclictest0-21swapper/200:00:132
17162992514,10cyclictest0-21swapper/023:45:100
1716299240,2cyclictest0-21swapper/019:20:110
17162992218,2cyclictest0-21swapper/000:25:110
1716299211,2cyclictest0-21swapper/022:40:150
1716299210,19cyclictest0-21swapper/021:55:170
1716499200,18cyclictest0-21swapper/220:50:102
1716299200,2cyclictest0-21swapper/022:00:130
1716299190,2cyclictest0-21swapper/023:25:100
17165991815,2cyclictest21191-21kworker/u8:022:29:053
17165991714,2cyclictest23669-21kworker/u8:121:02:043
17165991714,2cyclictest20524-21kworker/u8:119:27:053
17165991714,2cyclictest13233-21kworker/u8:222:04:043
17165991713,3cyclictest20524-21kworker/u8:119:35:043
1716499173,12cyclictest6285-21cut20:05:192
1716499171,13cyclictest0-21swapper/223:10:182
17165991613,2cyclictest26288-21kworker/u8:021:38:043
17165991613,2cyclictest26288-21kworker/u8:021:27:043
17165991613,2cyclictest26288-21kworker/u8:021:17:043
17165991613,2cyclictest23669-21kworker/u8:120:57:053
17165991613,2cyclictest21191-21kworker/u8:023:04:043
17165991613,2cyclictest20524-21kworker/u8:119:33:043
17164991611,3cyclictest19343-21cut23:35:202
17163991613,2cyclictest12613-21kworker/u8:123:32:051
1716299160,2cyclictest0-21swapper/021:40:140
17165991512,2cyclictest939-21kworker/u8:019:20:043
17165991512,2cyclictest939-21kworker/u8:019:10:033
17165991512,2cyclictest27343-21kworker/u8:100:02:043
17165991512,2cyclictest26288-21kworker/u8:021:52:043
17165991512,2cyclictest26288-21kworker/u8:020:14:043
17165991512,2cyclictest23669-21kworker/u8:121:34:043
17165991512,2cyclictest21191-21kworker/u8:023:12:043
17165991512,2cyclictest21191-21kworker/u8:022:41:043
17165991512,2cyclictest21191-21kworker/u8:022:36:043
17165991512,2cyclictest21191-21kworker/u8:022:31:043
17165991512,2cyclictest20524-21kworker/u8:119:44:043
17165991512,2cyclictest14256-21kworker/u8:220:45:043
17165991512,2cyclictest13233-21kworker/u8:222:07:043
17165991512,2cyclictest12613-21kworker/u8:123:39:043
17165991512,2cyclictest12613-21kworker/u8:123:27:043
17165991512,2cyclictest12613-21kworker/u8:123:19:053
17165991512,2cyclictest0-21swapper/321:55:173
17165991512,2cyclictest0-21swapper/320:30:183
1716599151,12cyclictest12968-21apt-get23:20:103
1716499151,12cyclictest0-21swapper/223:45:192
17164991511,2cyclictest0-21swapper/223:15:212
17164991510,3cyclictest1524-21ntpdc00:15:162
1716399151,2cyclictest0-21swapper/100:30:111
17163991511,3cyclictest4465-21cat21:30:001
17162991512,2cyclictest0-21swapper/000:35:230
17162991511,2cyclictest20480-21timerwakeupswit22:10:240
17165991411,2cyclictest26288-21kworker/u8:021:46:053
17165991411,2cyclictest26288-21kworker/u8:021:23:053
17165991411,2cyclictest26288-21kworker/u8:020:22:033
17165991411,2cyclictest23631-21kworker/u8:223:56:043
17165991411,2cyclictest23631-21kworker/u8:223:51:043
17165991411,2cyclictest21191-21kworker/u8:022:21:043
17165991411,2cyclictest21191-21kworker/u8:000:20:043
17165991411,2cyclictest20524-21kworker/u8:119:55:043
17165991411,2cyclictest20524-21kworker/u8:119:51:053
17165991411,2cyclictest20524-21kworker/u8:119:48:043
17165991411,2cyclictest14256-21kworker/u8:220:52:043
17165991411,2cyclictest0-21swapper/320:15:183
1716599140,13cyclictest0-21swapper/300:25:173
1716599140,11cyclictest0-21swapper/323:32:043
1716499149,3cyclictest17559-21df_abs19:10:122
1716499149,3cyclictest0-21swapper/221:05:252
1716499149,3cyclictest0-21swapper/220:55:152
1716499142,7cyclictest0-21swapper/223:55:002
17164991410,3cyclictest0-21swapper/221:50:172
1716499140,3cyclictest9221-21cut00:35:172
1716499140,3cyclictest4189-21uname22:55:162
1716499140,3cyclictest19252-21cut20:40:232
1716499140,12cyclictest15659-21cut23:25:192
1716499140,12cyclictest13823-21sed23:20:192
17163991411,2cyclictest23669-21kworker/u8:120:55:041
17163991411,2cyclictest14256-21kworker/u8:220:51:041
1716399140,2cyclictest0-21swapper/122:35:201
1716399140,2cyclictest0-21swapper/122:05:191
1716299142,9cyclictest0-21swapper/022:30:010
1716299140,2cyclictest0-21swapper/021:00:160
17165991310,2cyclictest27343-21kworker/u8:100:10:043
17165991310,2cyclictest27343-21kworker/u8:100:07:053
17165991310,2cyclictest26288-21kworker/u8:020:25:043
17165991310,2cyclictest26288-21kworker/u8:020:09:053
17165991310,2cyclictest21191-21kworker/u8:023:06:043
17165991310,2cyclictest21191-21kworker/u8:022:17:043
17165991310,2cyclictest21191-21kworker/u8:000:35:043
17165991310,2cyclictest14256-21kworker/u8:220:41:053
1716599130,2cyclictest0-21swapper/322:55:183
1716499138,3cyclictest0-21swapper/219:47:582
1716499132,8cyclictest0-21swapper/221:18:582
1716499132,6cyclictest0-21swapper/222:34:592
1716499132,6cyclictest0-21swapper/219:40:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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