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2021-09-17 - 14:33

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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ARMv7 Processor rev 5 (v7l), 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 alll highest latencies:
System rack4slot6s.osadl.org (updated Fri Sep 17, 2021 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3051821360,3chrt30517-21/usr/sbin/munin19:25:400
401021260,3sleep04012-21find21:55:280
2598821260,3chrt25986-21systemctl23:20:350
1955421240,3chrt19555-21switchtime22:55:300
1565021060,4sleep015459-21/usr/sbin/munin20:35:220
74982917,10sleep07547-21df22:10:210
227402900,3sleep022741-21sshd21:02:230
273712895,9sleep027377-21df_inode19:15:170
22112890,3sleep02213-21wc21:50:000
114212894,12sleep011486-21/usr/sbin/munin00:30:290
144672885,10sleep014465-21ntp_states20:30:260
271062875,11sleep027136-21/usr/sbin/munin23:25:290
109292855,66sleep010930-21sshd22:22:380
47582847,9sleep04789-21if_eth000:05:330
327552775,60sleep032759-21ntp_states19:35:260
2519427019,30sleep025271-21cat19:05:250
2592999639,22cyclictest2334-21ntp_states23:55:240
25929996311,19cyclictest4988-21df_inode22:00:210
25929996226,25cyclictest2507-21/usr/sbin/munin21:50:200
2592999607,18cyclictest24529-21grep21:10:130
25929996016,13cyclictest30676-21/usr/sbin/munin23:40:310
2592999598,18cyclictest28633-21runrttasks23:30:380
25929995933,15cyclictest28862-21/usr/sbin/munin21:25:310
25929995926,24cyclictest27917-21sshd21:22:280
25929995918,13cyclictest4151-21ntpq19:50:230
25929995917,15cyclictest63802chrt20:00:010
2592999589,16cyclictest19742-21awk20:50:310
2592999589,15cyclictest9507-21sshd00:23:430
2592999588,18cyclictest20602-21cpu20:55:130
2592999588,16cyclictest5925-21/usr/sbin/munin00:10:160
2592999588,15cyclictest32229-21/usr/sbin/munin21:40:180
25929995835,15cyclictest29705-21/usr/sbin/munin21:30:170
25929995832,16cyclictest1619-21/usr/sbin/munin19:40:290
25929995832,16cyclictest10792-21/usr/sbin/munin20:15:320
2592999578,19cyclictest26569-21chrt21:17:060
2592999578,17cyclictest18036-21ntpq22:50:270
2592999578,16cyclictest24208-21/usr/sbin/munin23:15:360
2592999578,16cyclictest23196-21/usr/sbin/munin21:05:290
2592999578,15cyclictest22041-21/usr/sbin/munin23:05:290
2592999578,14cyclictest14210-21ntp_states22:35:280
25929995732,16cyclictest17274-21/usr/sbin/munin20:40:280
25929995723,11cyclictest32138-21ls23:45:250
25929995719,12cyclictest12927-21cpu20:25:190
25929995710,19cyclictest18656-21sshd20:45:430
172002573,8sleep00-21swapper22:46:210
2592999569,17cyclictest7212-21/usr/sbin/munin00:15:360
2592999569,16cyclictest6718-21wc22:05:370
2592999568,16cyclictest8762-21egrep22:15:140
25929995633,14cyclictest11507-21/usr/sbin/munin22:25:210
25929995632,15cyclictest31299-21/usr/sbin/munin19:30:170
25929995632,15cyclictest1093-21/usr/sbin/munin23:50:310
25929995631,15cyclictest26624-21/usr/sbin/munin19:10:360
2592999558,18cyclictest20956-21wc23:00:430
2592999558,15cyclictest28629-21/usr/sbin/munin19:20:200
2592999557,17cyclictest3695-21sshd19:49:440
2592999556,16cyclictest8159-21/usr/sbin/munin20:05:340
25929995534,13cyclictest15548-21/usr/sbin/munin22:40:280
25929995533,14cyclictest30354-21sshd23:38:430
25929995530,17cyclictest13834-21latency_hist22:35:020
25929995519,11cyclictest12465-21basename00:35:270
25929995513,17cyclictest32086-21munin-run21:40:000
25929995510,18cyclictest9853-21df00:25:160
25929995510,14cyclictest23522-21awk23:10:340
2592999548,18cyclictest12488-21sshd20:22:440
2592999548,14cyclictest4519-21munin-run00:05:010
2592999547,15cyclictest6457-21/usr/sbin/munin20:00:190
25929995410,18cyclictest10222-21latency_hist20:15:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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