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2024-09-08 - 12:46

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 - 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 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack4slot6s.osadl.org (updated Sun Sep 08, 2024 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
980822560,3sleep09811-21wc19:35:010
2030721380,3chrt20306-21/usr/sbin/munin00:25:260
732621350,3chrt7325-21/usr/sbin/munin23:35:200
303121340,20sleep03032-21sh23:20:010
993221330,4chrt9924-21ntp_states23:45:230
2630212518,83sleep02702-21users19:05:260
2796721200,3chrt27966-21sed20:45:010
692621000,3sleep06975-21cat23:35:010
109442990,2sleep010941-21awk21:45:010
129692960,4sleep013043-21wc19:45:270
149542936,10sleep014969-21latency00:05:170
114832937,11sleep011487-21ntp_states19:40:230
253532916,11sleep025356-21df_inode22:40:130
219812914,9sleep022051-21sed20:20:270
280462906,11sleep028050-21df_inode20:45:130
135812896,12sleep013598-21awk00:00:140
5442780,2sleep0542-21grep23:10:020
174462705,55sleep017449-21df_inode00:15:160
3325996635,22cyclictest17953-21/usr/sbin/munin20:05:240
3325996611,15cyclictest8649-21ntp_states23:40:240
3325996528,28cyclictest22922-21/usr/sbin/munin22:30:180
3325996224,15cyclictest11161-21netstat23:50:210
3325996210,20cyclictest25687-21ntpq20:35:220
3325996112,21cyclictest2190-21memory21:10:180
332599608,16cyclictest4615-21/usr/sbin/munin21:20:210
332599607,18cyclictest18849-21awk00:20:160
332599598,19cyclictest21787-21grep00:30:310
332599597,18cyclictest706-21/usr/sbin/munin21:05:210
3325995935,15cyclictest3683-21/usr/sbin/munin23:20:270
3325995929,20cyclictest7533-21/usr/sbin/munin21:30:230
3325995918,14cyclictest18960-21wc22:15:180
332599589,18cyclictest16212-21idleruntime-cro20:00:010
332599589,16cyclictest5889-21munin-run19:20:010
332599589,15cyclictest116292sleep021:45:280
332599588,16cyclictest24169-21chrt20:30:120
332599588,15cyclictest24267-21ntp_states22:35:220
3325995834,15cyclictest4523-21/usr/sbin/munin23:25:100
3325995833,15cyclictest28473-21/usr/sbin/munin22:50:330
3325995830,16cyclictest6491-21/usr/sbin/munin21:25:290
3325995810,16cyclictest14823-21sendmail-msp22:00:010
332599579,16cyclictest21419-21/usr/sbin/munin22:25:310
332599579,15cyclictest20222-21/usr/sbin/munin20:15:250
332599578,17cyclictest23116-21chrt20:25:220
332599577,16cyclictest8342-21sshd19:29:010
3325995733,15cyclictest3365-21/usr/sbin/munin21:15:140
3325995733,15cyclictest20424-21/usr/sbin/munin22:20:220
3325995732,15cyclictest17717-21/usr/sbin/munin22:10:180
3325995710,15cyclictest30559-21/usr/sbin/munin20:55:240
332599568,19cyclictest12208-21/usr/sbin/munin23:55:320
332599568,16cyclictest8878-21/usr/sbin/munin21:35:260
332599568,15cyclictest6027-21/usr/sbin/munin19:20:140
332599568,15cyclictest32549-21sshd21:01:010
332599568,14cyclictest4605-21sshd19:15:020
332599568,14cyclictest22561-21/usr/sbin/munin00:35:290
332599567,18cyclictest14943-21/usr/sbin/munin22:00:200
3325995634,15cyclictest679-21/usr/sbin/munin23:10:140
3325995632,14cyclictest9883-21/usr/sbin/munin19:35:120
3325995611,16cyclictest16501-21ntpq22:05:190
332599558,15cyclictest16096-21/usr/sbin/munin00:10:150
332599558,15cyclictest12349-21/usr/sbin/munin21:50:150
3325995534,13cyclictest14008-21/usr/sbin/munin19:50:190
3325995530,16cyclictest29604-21/usr/sbin/munin20:50:240
3325995511,14cyclictest29429-21ntp_states22:55:200
3325995510,17cyclictest16951-21users20:00:290
332599547,15cyclictest19223-21ntp_states20:10:210
3325995432,14cyclictest26892-21/usr/sbin/munin22:45:240
332599538,13cyclictest30461-21/usr/sbin/munin23:00:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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