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2022-07-06 - 06:26

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, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack9slot3s.osadl.org (updated Wed Jul 06, 2022 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134291650,41ptp4l0-21swapper/019:05:200
134291620,43ptp4l0-21swapper/119:09:591
2472625954,2sleep20-21swapper/219:05:212
2349025048,1sleep30-21swapper/319:05:133
134291320,0ptp4l0-21swapper/123:50:221
134291320,0ptp4l0-21swapper/123:50:221
134291200,7ptp4l13749-21unixbench-2d00:00:250
134291200,0ptp4l0-21swapper/023:35:190
134291190,0ptp4l0-21swapper/121:10:301
134291190,0ptp4l0-21swapper/100:35:201
134291190,0ptp4l0-21swapper/022:30:310
134291180,3ptp4l0-21swapper/021:35:180
134291180,0ptp4l0-21swapper/121:00:171
134291170,0ptp4l0-21swapper/120:25:181
134291170,0ptp4l0-21swapper/019:55:150
134291160,2ptp4l10529-21snmp_o5powerctl22:50:211
134291160,2ptp4l0-21swapper/022:48:500
134291160,1ptp4l8112-21apt-get21:45:121
134291160,1ptp4l8013-21snmp_o5powerctl22:45:201
134291160,1ptp4l27496-21apt-get00:30:130
134291160,0ptp4l0-21swapper/123:35:121
134291160,0ptp4l0-21swapper/023:50:250
134291160,0ptp4l0-21swapper/023:50:250
134291160,0ptp4l0-21swapper/023:45:340
173012150,0sleep10-21swapper/100:10:011
134291150,1ptp4l8994-21snmp_o5powerctl20:40:200
134291150,1ptp4l3917-21/usr/sbin/munin22:40:130
134291150,1ptp4l3415-21snmp_o5powerctl23:40:221
134291150,1ptp4l3402-21diskstats21:35:121
134291150,1ptp4l30975-21hddtemp_smartct21:25:140
134291150,1ptp4l29137-21snmp_o5powerctl19:15:030
134291150,1ptp4l29041-21snmp_o5powerctl00:30:221
134291150,1ptp4l27958-21ntp_states23:25:190
134291150,1ptp4l27794-21snmp_o5powerctl22:20:210
134291150,1ptp4l27601-21snmp_o5powerctl19:10:211
134291150,1ptp4l26228-21ntp_states00:25:180
134291150,1ptp4l23528-21grep00:20:161
134291150,1ptp4l22879-21ntp_states23:15:181
134291150,1ptp4l2073-21snmp_o5powerctl21:30:230
134291150,1ptp4l20457-21hddtemp_smartct00:15:161
134291150,1ptp4l17679-21snmp_o5powerctl22:00:223
134291150,1ptp4l16595-21perl22:00:141
134291150,1ptp4l14921-21diskstats19:50:131
134291150,1ptp4l14919-21snmp_o5powerctl21:55:200
134291150,1ptp4l12267-21ls21:50:240
134291150,1ptp4l12186-21snmp_o5powerctl21:50:221
134291150,0ptp4l0-21swapper/123:25:221
134291150,0ptp4l0-21swapper/123:05:211
134291150,0ptp4l0-21swapper/122:05:131
134291150,0ptp4l0-21swapper/121:15:121
134291150,0ptp4l0-21swapper/120:30:201
134291150,0ptp4l0-21swapper/120:00:101
134291150,0ptp4l0-21swapper/119:25:121
134291150,0ptp4l0-21swapper/023:44:560
134291150,0ptp4l0-21swapper/023:10:220
134291150,0ptp4l0-21swapper/022:10:130
134291150,0ptp4l0-21swapper/022:00:120
134291150,0ptp4l0-21swapper/021:45:200
134291150,0ptp4l0-21swapper/021:05:120
134291150,0ptp4l0-21swapper/020:35:130
134291150,0ptp4l0-21swapper/020:25:120
134291150,0ptp4l0-21swapper/019:45:140
134291150,0ptp4l0-21swapper/000:20:130
134291150,0ptp4l0-21swapper/000:10:120
134291140,1ptp4l864-21which19:20:202
134291140,1ptp4l592-21irqbalance22:40:141
134291140,1ptp4l31827-21apt19:20:111
134291140,1ptp4l29501-21sendmail20:20:010
134291140,1ptp4l28926-21cut22:25:141
134291140,1ptp4l27147-21memory19:10:160
134291140,1ptp4l24861-21expr20:10:120
134291140,1ptp4l24377-21snmp_o5powerctl21:10:280
134291140,1ptp4l19822-21if_err_enp3s023:10:161
134291140,1ptp4l17723-21df_inode00:10:131
134291140,1ptp4l1362-21/usr/sbin/munin22:35:120
134291140,1ptp4l11818-21/usr/sbin/munin20:45:211
134291140,1ptp4l11365-21unixbench_singl19:40:220
134291140,1ptp4l10901-21wc23:55:200
134291140,1ptp4l10695-21timerwakeupswit22:50:230
134291140,0ptp4l30984-21ls23:30:221
134291140,0ptp4l0-21swapper/221:30:232
134291140,0ptp4l0-21swapper/123:55:241
134291140,0ptp4l0-21swapper/123:45:141
134291140,0ptp4l0-21swapper/123:20:211
134291140,0ptp4l0-21swapper/123:00:221
134291140,0ptp4l0-21swapper/122:15:211
134291140,0ptp4l0-21swapper/122:10:221
134291140,0ptp4l0-21swapper/121:40:121
134291140,0ptp4l0-21swapper/121:30:121
134291140,0ptp4l0-21swapper/121:25:211
134291140,0ptp4l0-21swapper/121:05:171
134291140,0ptp4l0-21swapper/120:50:201
134291140,0ptp4l0-21swapper/120:20:201
134291140,0ptp4l0-21swapper/120:05:181
134291140,0ptp4l0-21swapper/119:55:201
134291140,0ptp4l0-21swapper/119:45:261
134291140,0ptp4l0-21swapper/119:40:201
134291140,0ptp4l0-21swapper/119:35:111
134291140,0ptp4l0-21swapper/119:15:021
134291140,0ptp4l0-21swapper/023:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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