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2022-12-04 - 22:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #6

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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ARM Freescale i.MX535 @1000 MHz, Linux 4.19.142-rt63+ (Profile)

Latency plot of shadow in rack #4, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l50000000 -m -n -a0 -t1 -p99 -h400 -i400 -q
Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot6s.osadl.org (updated Sun Dec 04, 2022 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2882423000,2sleep028825-21sh08:50:130
572022570,3sleep05719-21wc09:25:290
2172422510,2sleep021727-21sh12:35:010
1480822430,2sleep014807-21sort07:55:210
698021250,3chrt6979-21/usr/sbin/munin09:30:290
44021020,3sleep0439-21wc11:10:290
113992990,4sleep011414-21munin-run11:55:000
172502920,4sleep017267-21/usr/sbin/munin08:05:160
314612916,12sleep031531-21find11:05:290
34772905,11sleep03543-21timerandwakeup07:10:280
169982900,3sleep017004-21awk12:15:300
83152870,3sleep08353-21grep09:35:300
185222867,9sleep018525-21df_inode08:10:140
262732850,3sleep026284-21/usr/sbin/munin08:40:150
195812856,9sleep019585-21ntp_states12:25:240
245772830,3sleep024647-21cat10:40:020
229832784,8sleep0277-21snmpd12:39:560
285027620,31sleep02876-21basename07:10:000
163492743,5sleep00-21swapper12:13:180
2899996635,21cyclictest25098-21/usr/sbin/munin10:40:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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