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2024-04-20 - 15:39

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #7

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 50.5 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 highest latencies:
System rack5slot7s.osadl.org (updated Sat Apr 20, 2024 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8608224452212,89sleep00-21swapper07:07:070
89779916819,121cyclictest15675-21apt-get11:10:290
89779916217,121cyclictest4994-21munin-run10:10:010
89779916215,123cyclictest25948-21munin-run09:00:020
89779916119,28cyclictest30086-21users12:31:150
89779916113,27cyclictest10152-21/usr/sbin/munin10:40:300
89779916112,123cyclictest18797-21/usr/sbin/munin08:16:020
89779916110,98cyclictest21509-21ntpq08:30:500
89779915917,117cyclictest4992-21apt-get10:11:210
89779915823,28cyclictest13943-21diskstats11:00:550
89779915816,117cyclictest13509-21munin-run11:00:020
89779915721,29cyclictest15580-21apt-get07:55:170
89779915714,120cyclictest19331-21df11:30:370
89779915632,19cyclictest0-21swapper07:45:360
89779915617,22cyclictest14558-21apt-get11:06:170
89779915610,123cyclictest9317-21cat10:35:050
89779915610,123cyclictest16966-21grep11:16:000
89779915522,104cyclictest1076-21apt-get09:45:240
89779915521,106cyclictest19744-21diskstats08:20:350
89779915519,112cyclictest27762-21df09:10:250
89779915513,119cyclictest11796-21processes07:26:410
89779915513,117cyclictest17152-21wc08:05:050
89779915511,120cyclictest13738-21sshd07:40:020
89779915439,22cyclictest30544-21open_files12:35:580
89779915419,22cyclictest9927-21munin-node12:22:490
89779915415,98cyclictest28306-21apt-get12:26:380
89779915415,114cyclictest29392-21df09:20:260
89779915414,116cyclictest7392-21/usr/sbin/munin10:21:010
89779915413,116cyclictest22555-21apt-get11:50:240
89779915413,101cyclictest12243-21apt-get07:30:120
89779915412,40cyclictest24260-21sshd12:00:030
89779915410,120cyclictest9832-21munin-node07:15:120
89779915329,16cyclictest31808-21latency_hist09:35:040
89779915312,116cyclictest4198-21munin-run10:05:020
89779915310,119cyclictest974-21munin-plugin-st09:45:020
8977991529,24cyclictest17564-21wc11:20:240
89779915220,105cyclictest25982-21apt-get12:10:200
89779915219,25cyclictest6130-21apt-get10:15:220
89779915217,111cyclictest21837-21df_inode11:45:300
89779915215,110cyclictest31910-21/usr/sbin/munin09:35:440
89779915214,26cyclictest9314-21memory07:10:460
89779915214,117cyclictest29987-21apt-get09:26:450
89779915212,24cyclictest24427-21grep08:50:060
89779915211,98cyclictest2295-21fgrep09:51:010
89779915210,23cyclictest21299-21grep11:40:560
8977991519,100cyclictest18352-21cstates11:25:220
89779915135,94cyclictest20736-21unixbench_singl11:36:140
89779915118,26cyclictest3374-21munin-run10:00:030
89779915115,20cyclictest17899-21munin-run08:10:030
89779915113,98cyclictest20539-21diskstats08:25:350
89779915112,27cyclictest9904-21timerandwakeup10:36:030
89779915112,26cyclictest24625-21cut12:01:010
89779915112,114cyclictest26142-21cstates09:00:240
8977991509,103cyclictest10419-21apt-get07:20:140
89779915021,28cyclictest28568-21diskstats09:15:340
89779915018,106cyclictest11210-21apt-get10:45:220
89779915015,114cyclictest26877-21df12:15:260
89779914918,108cyclictest24617-21irqstats08:50:410
89779914827,21cyclictest27405-21/usr/sbin/munin09:06:010
89779914814,108cyclictest18474-21systemctl08:11:000
8977991478,101cyclictest12569-21ls10:51:020
89779914714,23cyclictest15570-21latency_hist07:55:060
89779914713,25cyclictest23118-21sort08:40:480
89779914712,24cyclictest7842-21cstates10:25:230
89779914617,106cyclictest22725-21munin-run08:40:020
89779914614,110cyclictest13856-21apt-get07:40:160
89779914410,111cyclictest25592-21ps12:06:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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