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2024-11-22 - 08:50

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 Fri Nov 22, 2024 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1714121370,4chrt17144-21latency_hist23:35:010
859821320,4chrt8599-21ntpq20:55:170
1893121230,2sleep018933-21awk23:40:260
1376121200,3sleep013762-21sendmail_mailqu23:20:260
223321020,3sleep02237-21timerandwakeup22:35:280
240232990,3sleep024030-21egrep19:50:120
164262990,2sleep016427-21cat19:20:150
281962954,11sleep028194-21ntp_states20:05:210
75842936,12sleep07645-21users20:50:300
152962920,3sleep015368-21/usr/sbin/munin19:15:250
111242916,9sleep011141-21/usr/sbin/munin21:05:190
249352894,9sleep024981-21users00:05:300
177262895,8sleep017731-21latency19:25:160
268152823,5sleep00-21swapper20:00:210
1290427820,33sleep012979-21/usr/sbin/munin19:05:250
106392785,61sleep010721-21sort23:10:010
70532775,61sleep07054-21memory22:55:160
7072730,2sleep0708-21cat20:25:140
13601996631,26cyclictest17891-21/usr/sbin/munin21:30:310
13601996629,14cyclictest32121-21/usr/sbin/munin00:35:110
13601996426,14cyclictest108-21systemd-journal21:25:480
303772620,2sleep030378-21/usr/sbin/munin22:20:120
1360199618,18cyclictest13232-21grep23:20:000
13601996135,16cyclictest3421-21/usr/sbin/munin22:40:250
13601996035,16cyclictest29999-21/usr/sbin/munin00:25:270
1360199599,23cyclictest18085-21sshd23:37:470
1360199596,18cyclictest10747-21/usr/sbin/munin23:10:170
1360199589,15cyclictest26436-21sshd00:11:480
13601995834,16cyclictest31667-21/usr/sbin/munin22:25:130
13601995813,18cyclictest4575-21ls20:40:140
13601995810,17cyclictest21272-21/usr/sbin/munin21:45:250
1360199578,18cyclictest31037-21memory00:30:210
1360199578,17cyclictest1897-21/usr/sbin/munin20:30:180
1360199578,15cyclictest23834-21/usr/sbin/munin21:55:170
13601995731,15cyclictest8315-21/usr/sbin/munin23:00:150
13601995711,18cyclictest20804-21/usr/sbin/munin23:50:210
1360199569,18cyclictest27492-21wc00:15:270
1360199569,16cyclictest19869-21sshd19:33:470
1360199569,16cyclictest13553-21cron19:10:020
1360199569,14cyclictest28868-21users00:20:300
1360199568,15cyclictest712-21ntpq22:30:240
1360199566,17cyclictest23151-21/usr/sbin/munin21:50:310
13601995634,14cyclictest21674-21/usr/sbin/munin19:40:230
13601995633,15cyclictest5953-21/usr/sbin/munin20:45:160
13601995633,14cyclictest5993-21/usr/sbin/munin22:50:280
13601995632,15cyclictest25748-21/usr/sbin/munin19:55:250
13601995611,14cyclictest12275-21egrep21:10:110
13601995610,14cyclictest29194-21/usr/sbin/munin20:10:200
1360199559,17cyclictest14693-21systemctl21:20:010
1360199559,16cyclictest31791-21/usr/sbin/munin20:20:130
1360199558,17cyclictest9646-21/usr/sbin/munin21:00:250
1360199558,16cyclictest3176-21/usr/sbin/munin20:35:180
1360199558,14cyclictest25146-21/usr/sbin/munin22:00:160
1360199557,16cyclictest29610-21/usr/sbin/munin22:15:300
13601995533,15cyclictest26776-21/usr/sbin/munin22:05:270
13601995531,15cyclictest20076-21/usr/sbin/munin21:40:130
13601995531,14cyclictest27871-21/usr/sbin/munin22:10:180
13601995531,14cyclictest22267-21/usr/sbin/munin23:55:260
13601995510,15cyclictest30770-21ntp_states20:15:260
1360199548,16cyclictest15363-21chrt23:26:290
1360199547,18cyclictest4822-21/usr/sbin/munin22:45:270
13601995432,15cyclictest18774-21/usr/sbin/munin21:35:120
1360199538,16cyclictest14831-21/usr/sbin/munin21:20:150
1360199538,15cyclictest19783-21seq23:45:050
1360199538,14cyclictest22824-21/usr/sbin/munin19:45:150
1360199537,14cyclictest23098-21/usr/sbin/munin00:00:270
13601995330,15cyclictest20543-21/usr/sbin/munin19:35:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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