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2021-06-16 - 21:52

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 
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ARMv7 Processor rev 5 (v7l), Linux 4.18.7-rt5 (Profile)

Latency plot of shadow in rack #5, slot #7
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50500000 -m -n -a0 -t1 -p99 -i396 -h400 -q
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 alll highest latencies:
System rack5slot7s.osadl.org (updated Wed Jun 16, 2021 12:45:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6998223902174,163sleep00-21swapper07:07:290
73299916318,121cyclictest32652-21munin-run09:40:030
73299916214,121cyclictest28815-21cut09:16:190
73299916115,120cyclictest11071-21sshd10:45:330
73299916113,33cyclictest15654-21head11:11:090
73299916019,114cyclictest28934-21apt-get12:35:240
73299916014,123cyclictest18071-21grep11:26:090
73299916014,120cyclictest1011-21apt-get09:46:340
73299915920,22cyclictest26641-21df_inode12:20:370
73299915916,118cyclictest6436-21ntpq10:15:560
73299915732,105cyclictest2125-21apt-get09:50:200
73299915716,116cyclictest14108-21apt-get07:51:270
73299915716,115cyclictest9471-21df10:35:320
73299915714,119cyclictest29973-21apt-get09:25:210
73299915714,117cyclictest19290-21grep08:16:130
73299915616,24cyclictest22582-21munin-run08:40:020
73299915616,24cyclictest16736-21apt-get08:05:500
73299915516,99cyclictest9278-21munin-run07:20:030
73299915515,114cyclictest24472-21ps12:06:010
73299915439,22cyclictest930-21unixbench_singl09:41:100
73299915429,102cyclictest30977-21apt-config09:30:130
73299915419,29cyclictest15328-21diskstats07:55:490
73299915418,27cyclictest8569-21/usr/sbin/munin10:30:140
73299915415,23cyclictest16738-21munin-run08:05:020
73299915413,114cyclictest11793-21/usr/sbin/munin10:50:420
73299915340,23cyclictest21083-21processes11:46:020
73299915318,107cyclictest21475-21apt-get11:50:260
73299915313,29cyclictest8091-21ntp_states10:25:590
73299915312,116cyclictest26411-21sendmail12:20:010
73299915310,27cyclictest19628-21wc11:36:110
73299915310,25cyclictest23269-21grep12:00:050
73299915221,27cyclictest17850-21apt-get08:10:370
73299915221,107cyclictest25756-21users08:56:250
73299915216,111cyclictest23602-21df_inode08:45:330
73299915215,112cyclictest3625-21munin-run10:00:030
73299915213,31cyclictest7082-21diskstats10:20:380
73299915213,116cyclictest28025-21latency_hist12:30:020
73299915213,115cyclictest16949-21awk11:20:590
73299915212,115cyclictest27019-21awk09:05:540
73299915210,41cyclictest7711-21grep07:10:530
73299915210,114cyclictest12592-21/usr/sbin/munin10:55:430
73299915139,20cyclictest19719-21load08:20:510
73299915119,106cyclictest3986-21memory10:00:570
73299915118,28cyclictest12615-21apt-get07:40:290
73299915117,109cyclictest29855-21munin-run09:25:030
73299915117,107cyclictest20276-21apt-get08:25:190
73299915110,38cyclictest18382-21/usr/sbin/munin11:30:440
73299915018,23cyclictest23480-21irqstats12:00:440
73299915014,22cyclictest25218-21ntp_states12:11:000
73299915012,26cyclictest27704-21kernelversion09:10:480
73299915011,116cyclictest5707-21grep10:11:000
73299914930,20cyclictest0-21swapper11:01:000
73299914929,21cyclictest0-21swapper11:15:540
73299914929,21cyclictest0-21swapper07:30:580
73299914918,23cyclictest24395-21df08:50:290
73299914914,22cyclictest20117-21memory11:40:520
73299914912,114cyclictest21821-21wc08:35:050
73299914872,54cyclictest26650-21wc09:05:040
73299914815,22cyclictest9510-21diskstats07:20:430
73299914814,25cyclictest10293-21df07:25:360
73299914813,24cyclictest23016-21ntp_states08:40:580
7329991478,25cyclictest12215-21grep07:36:080
73299914717,106cyclictest10441-21memory10:40:530
73299914714,24cyclictest4638-21df10:05:320
73299914713,112cyclictest28893-21cat12:35:080
73299914613,24cyclictest13409-21/usr/sbin/munin07:45:450
73299914513,106cyclictest14218-21apt-get11:05:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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