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2023-01-29 - 17:33

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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  Kontron

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 Sun Jan 29, 2023 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134291700,49ptp4l0-21swapper/007:07:000
134291600,37ptp4l0-21swapper/107:05:121
1716025551,2sleep20-21swapper/207:05:292
1725325349,2sleep30-21swapper/307:06:423
25922450,0sleep02597-21unixbench_singl09:45:280
134291280,0ptp4l0-21swapper/010:05:270
134291210,1ptp4l4401-21df07:45:141
134291210,0ptp4l0-21swapper/111:50:011
134291190,0ptp4l0-21swapper/111:45:271
134291190,0ptp4l0-21swapper/008:35:250
134291180,0ptp4l0-21swapper/110:25:221
134291180,0ptp4l0-21swapper/109:10:181
134291180,0ptp4l0-21swapper/108:31:061
134291180,0ptp4l0-21swapper/008:45:280
134291170,0ptp4l0-21swapper/110:20:171
134291160,1ptp4l23816-21apt-get07:20:140
134291160,1ptp4l16378-21apt-get08:08:481
134291160,1ptp4l15918-21apt-get10:15:181
134291150,1ptp4l30274-21/usr/sbin/munin07:30:270
134291150,1ptp4l23150-21ls11:30:280
134291150,1ptp4l18983-21ls07:10:221
134291150,1ptp4l18464-21ntpq12:25:280
134291150,1ptp4l13989-21snmp_o5powerctl09:05:270
134291150,0ptp4l0-21swapper/112:15:161
134291150,0ptp4l0-21swapper/109:00:181
134291150,0ptp4l0-21swapper/108:55:201
134291150,0ptp4l0-21swapper/108:20:151
134291150,0ptp4l0-21swapper/108:00:001
134291150,0ptp4l0-21swapper/009:30:190
134291150,0ptp4l0-21swapper/008:15:160
134291150,0ptp4l0-21swapper/008:10:160
134291150,0ptp4l0-21swapper/007:15:140
1776899148,2cyclictest9-21ksoftirqd/012:05:230
134291140,1ptp4l8071-21perf10:00:010
134291140,1ptp4l7786-21netstat07:50:211
134291140,1ptp4l30699-21cat11:45:280
134291140,1ptp4l30427-21sed08:35:201
134291140,1ptp4l29413-21cut07:30:201
134291140,1ptp4l28822-21cstates10:40:190
134291140,1ptp4l27292-21cstates08:30:210
134291140,1ptp4l26421-21memory09:30:241
134291140,1ptp4l2530-21hddtemp_smartct11:55:231
134291140,1ptp4l24610-21hddtemp_smartct11:35:220
134291140,1ptp4l23792-21irqstats09:25:301
134291140,1ptp4l22403-21df08:20:160
134291140,1ptp4l20778-21ntp_states08:15:231
134291140,1ptp4l17360-21cstates12:25:231
134291140,1ptp4l14959-21cat09:10:160
134291140,1ptp4l13359-21/usr/sbin/munin10:10:251
134291140,1ptp4l11025-21sed09:00:230
134291140,0ptp4l13742-21ls12:15:280
134291140,0ptp4l0-21swapper/207:30:272
134291140,0ptp4l0-21swapper/112:30:231
134291140,0ptp4l0-21swapper/112:10:171
134291140,0ptp4l0-21swapper/112:05:181
134291140,0ptp4l0-21swapper/112:00:221
134291140,0ptp4l0-21swapper/111:24:441
134291140,0ptp4l0-21swapper/111:15:281
134291140,0ptp4l0-21swapper/110:50:261
134291140,0ptp4l0-21swapper/110:40:181
134291140,0ptp4l0-21swapper/110:35:191
134291140,0ptp4l0-21swapper/110:05:181
134291140,0ptp4l0-21swapper/109:40:221
134291140,0ptp4l0-21swapper/109:35:021
134291140,0ptp4l0-21swapper/109:20:201
134291140,0ptp4l0-21swapper/108:54:561
134291140,0ptp4l0-21swapper/108:40:251
134291140,0ptp4l0-21swapper/108:25:271
134291140,0ptp4l0-21swapper/108:10:251
134291140,0ptp4l0-21swapper/108:00:291
134291140,0ptp4l0-21swapper/012:30:290
134291140,0ptp4l0-21swapper/012:20:250
134291140,0ptp4l0-21swapper/011:40:280
134291140,0ptp4l0-21swapper/011:25:360
134291140,0ptp4l0-21swapper/011:15:180
134291140,0ptp4l0-21swapper/011:10:220
134291140,0ptp4l0-21swapper/011:05:240
134291140,0ptp4l0-21swapper/010:55:320
134291140,0ptp4l0-21swapper/010:50:170
134291140,0ptp4l0-21swapper/010:25:330
134291140,0ptp4l0-21swapper/010:10:180
134291140,0ptp4l0-21swapper/009:25:310
134291140,0ptp4l0-21swapper/008:55:270
134291140,0ptp4l0-21swapper/008:40:160
134291140,0ptp4l0-21swapper/008:05:230
1777099132,2cyclictest134291ptp4l08:45:242
134291130,2ptp4l31797-21fschecks_count07:35:200
134291130,0ptp4l16611-21/usr/sbin/munin11:20:200
134291130,0ptp4l0-21swapper/211:15:202
134291130,0ptp4l0-21swapper/210:20:262
134291130,0ptp4l0-21swapper/210:05:202
134291130,0ptp4l0-21swapper/208:15:212
134291130,0ptp4l0-21swapper/207:35:232
134291130,0ptp4l0-21swapper/112:35:201
134291130,0ptp4l0-21swapper/112:20:181
134291130,0ptp4l0-21swapper/111:40:191
134291130,0ptp4l0-21swapper/111:35:211
134291130,0ptp4l0-21swapper/111:30:241
134291130,0ptp4l0-21swapper/111:25:281
134291130,0ptp4l0-21swapper/111:10:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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