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2022-07-05 - 09:20

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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 Core i7 7828EQ @3000 MHz, Linux 4.19.37-rt20 (Profile)

Latency plot of shadow in rack #9, 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 rack9slot3s.osadl.org (updated Tue Jul 05, 2022 00:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134291630,32ptp4l0-21swapper/019:07:500
134291570,39ptp4l0-21swapper/119:09:481
134291530,31ptp4l0-21swapper/219:05:192
150325046,2sleep30-21swapper/319:06:233
132112440,0sleep00-21swapper/019:30:120
203799231,4cyclictest33-21ksoftirqd/219:25:122
2037992120,0cyclictest33-21ksoftirqd/220:30:132
134291210,0ptp4l0-21swapper/022:55:130
134291200,6ptp4l2690-21cut21:15:171
134291200,0ptp4l0-21swapper/021:55:210
134291190,0ptp4l0-21swapper/122:40:221
134291190,0ptp4l0-21swapper/122:35:161
134291180,0ptp4l0-21swapper/119:45:191
134291180,0ptp4l0-21swapper/119:10:161
134291170,2ptp4l3436-21snmp_o5powerctl00:25:220
134291170,1ptp4l4370-21apt-get21:20:101
134291170,0ptp4l0-21swapper/121:50:241
134291170,0ptp4l0-21swapper/023:45:230
134291160,2ptp4l11172-21snmp_o5powerctl21:30:210
134291160,1ptp4l833-21apt-get23:20:111
134291160,1ptp4l7876-21apt-get19:20:130
134291160,1ptp4l7783-21snmp_o5powerctl20:20:240
134291160,1ptp4l6585-21snmp_o5powerctl22:25:220
134291160,1ptp4l5334-21apt-get19:15:130
134291160,1ptp4l3393-21apt-get23:25:111
134291160,1ptp4l1130-21apt-get20:10:111
134291160,0ptp4l0-21swapper/019:50:170
134291150,2ptp4l2199migration/121:10:151
134291150,1ptp4l9103-21snmp_o5powerctl22:30:220
134291150,1ptp4l6578-21snmp_o5powerctl22:25:221
134291150,1ptp4l31469-21diskmemload22:45:311
134291150,1ptp4l31393-21snmp_o5powerctl22:10:211
134291150,1ptp4l30725-21smartctl21:05:211
134291150,1ptp4l30585-21latency_hist20:05:011
134291150,1ptp4l25014-21apt-get23:05:031
134291150,1ptp4l23581-21df19:50:131
134291150,1ptp4l22734-21apt-get23:00:110
134291150,1ptp4l2121-21ntp_states23:20:160
134291150,1ptp4l20488-21ps20:45:190
134291150,1ptp4l18100-21snmp_o5powerctl20:40:210
134291150,1ptp4l17786-21smartctl21:45:161
134291150,0ptp4l0-21swapper/122:05:261
134291150,0ptp4l0-21swapper/120:25:021
134291150,0ptp4l0-21swapper/119:25:011
134291150,0ptp4l0-21swapper/023:27:290
134291150,0ptp4l0-21swapper/021:18:320
134291150,0ptp4l0-21swapper/020:50:120
134291150,0ptp4l0-21swapper/019:45:130
134291150,0ptp4l0-21swapper/000:00:130
203199143,5cyclictest19524-21cut20:45:141
134291140,1ptp4l7278-21cstates21:25:131
134291140,1ptp4l679-21perf20:10:021
134291140,1ptp4l6040-21chrt00:30:230
134291140,1ptp4l30951-21cpuspeed_turbos20:05:110
134291140,1ptp4l29612-21perf22:10:012
134291140,1ptp4l28186-21ls00:10:251
134291140,1ptp4l26700-21users22:00:260
134291140,1ptp4l26271-21find00:10:010
134291140,1ptp4l25665-21snmp_o5powerctl20:55:221
134291140,1ptp4l25-21ksoftirqd/119:55:021
134291140,1ptp4l24854-21/usr/sbin/munin20:55:170
134291140,1ptp4l23371-21if_enp3s023:00:141
134291140,1ptp4l23251-21sed20:50:221
134291140,1ptp4l19347-21sed19:40:161
134291140,1ptp4l19263-21runrttasks23:55:160
134291140,1ptp4l18449-21ntpq21:45:180
134291140,1ptp4l14356-21df20:35:131
134291140,1ptp4l11252-21cstates23:40:131
134291140,0ptp4l29001-21latency_hist21:05:011
134291140,0ptp4l26984-21cstates21:00:140
134291140,0ptp4l0-21swapper/321:25:233
134291140,0ptp4l0-21swapper/223:45:202
134291140,0ptp4l0-21swapper/223:15:212
134291140,0ptp4l0-21swapper/222:04:392
134291140,0ptp4l0-21swapper/123:55:121
134291140,0ptp4l0-21swapper/123:50:141
134291140,0ptp4l0-21swapper/123:10:131
134291140,0ptp4l0-21swapper/122:30:131
134291140,0ptp4l0-21swapper/121:55:281
134291140,0ptp4l0-21swapper/121:35:131
134291140,0ptp4l0-21swapper/121:30:111
134291140,0ptp4l0-21swapper/120:40:161
134291140,0ptp4l0-21swapper/120:30:201
134291140,0ptp4l0-21swapper/120:20:141
134291140,0ptp4l0-21swapper/120:15:211
134291140,0ptp4l0-21swapper/119:15:231
134291140,0ptp4l0-21swapper/100:30:171
134291140,0ptp4l0-21swapper/100:05:131
134291140,0ptp4l0-21swapper/100:00:271
134291140,0ptp4l0-21swapper/023:40:160
134291140,0ptp4l0-21swapper/022:20:200
134291140,0ptp4l0-21swapper/022:10:130
134291140,0ptp4l0-21swapper/021:50:210
134291140,0ptp4l0-21swapper/021:44:040
134291140,0ptp4l0-21swapper/021:35:220
134291140,0ptp4l0-21swapper/021:20:210
134291140,0ptp4l0-21swapper/021:13:090
134291140,0ptp4l0-21swapper/020:35:210
134291140,0ptp4l0-21swapper/020:25:170
134291140,0ptp4l0-21swapper/020:15:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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