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2025-10-26 - 14:50

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 here to display the system's profile data or here to proceed to next system.
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 792 highest latencies:
System rack4slot6s.osadl.org (updated Sun Oct 26, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2375521360,4chrt23757-21processes08:30:290
920221330,3chrt9203-21if_eth009:40:170
2472721300,3chrt24725-21df_inode08:35:150
1805211718,80sleep01874-21switchtime07:05:280
921721140,4sleep09144-21/usr/sbin/munin07:35:140
2732821070,3sleep027264-21/usr/sbin/munin08:45:170
1165621040,5sleep011701-21cpu09:50:140
145262970,3sleep014529-21sort07:55:210
130032978,12sleep012942-21/usr/sbin/munin09:55:160
165512940,3sleep016583-21cat12:15:020
231512910,3sleep023160-21cron10:35:000
303812896,10sleep030421-21users08:55:300
312432876,10sleep031247-21memory11:05:190
41672845,67sleep04220-21/usr/sbin/munin07:15:200
116502826,9sleep011654-21irqstats11:55:180
301772670,2sleep030176-21/usr/sbin/munin11:00:270
2592996426,26cyclictest7172-21/usr/sbin/munin07:25:290
2592996212,17cyclictest18302-21memory10:15:200
259299619,17cyclictest2489-21/usr/sbin/munin11:20:300
2592996120,15cyclictest6220-21latency_hist11:35:020
2592996111,18cyclictest13152-21/usr/sbin/munin12:00:250
259299609,16cyclictest5224-21seq11:30:180
2592996022,13cyclictest8944-21ls09:40:000
259299599,17cyclictest14259-21irqstats12:05:160
259299598,17cyclictest27362-21memory10:50:210
2592995934,17cyclictest22001-21/usr/sbin/munin12:35:170
2592995910,18cyclictest28828-21ntp_states08:50:230
259299589,15cyclictest31284-21irqstats09:00:170
259299588,15cyclictest28456-21/usr/sbin/munin10:55:210
2592995816,15cyclictest246682chrt10:40:150
2592995811,18cyclictest1459-21ntp_states11:15:250
259299579,17cyclictest20719-21/usr/sbin/munin10:25:310
259299579,16cyclictest19485-21/usr/sbin/munin08:15:270
259299579,14cyclictest1266-21/usr/sbin/munin09:10:290
259299578,15cyclictest7661-21/usr/sbin/munin11:40:150
259299577,18cyclictest20577-21/usr/sbin/munin12:30:260
259299577,15cyclictest26390-21awk08:40:270
2592995735,13cyclictest10503-21/usr/sbin/munin09:45:170
2592995733,15cyclictest4256-21/usr/sbin/munin11:25:280
259299569,16cyclictest2619-21sh09:15:150
259299569,15cyclictest10458-21/usr/sbin/munin07:40:290
259299568,17cyclictest279-21sshd09:28:290
259299568,16cyclictest18009-21/usr/sbin/munin12:20:130
259299567,17cyclictest8945-21/usr/sbin/munin11:45:300
259299567,16cyclictest18202-21/usr/sbin/munin08:10:270
2592995633,15cyclictest16008-21/usr/sbin/munin10:05:270
2592995632,15cyclictest1104-21runrttasks09:09:530
2592995619,12cyclictest5296-21/usr/sbin/munin07:20:220
2592995611,16cyclictest19626-21/usr/sbin/munin10:20:200
2592995610,18cyclictest14997-21seq10:01:350
239162563,8sleep00-21swapper10:35:410
259299559,16cyclictest20872-21/usr/sbin/munin08:20:160
259299559,14cyclictest8008-21/usr/sbin/munin07:30:180
259299558,37cyclictest6489-21/usr/sbin/munin09:30:170
259299558,18cyclictest19346-21df12:25:130
259299558,18cyclictest16792-21/usr/sbin/munin12:15:150
259299558,18cyclictest13079-21df07:50:120
259299558,15cyclictest25953-21df_inode10:45:170
259299558,14cyclictest225992sleep008:25:310
259299557,14cyclictest10386-21cat11:50:170
2592995531,15cyclictest3738-21runrttasks07:14:090
2592995510,17cyclictest4577-21apt-get09:21:100
2592995510,17cyclictest16969-21df08:05:130
2592995510,14cyclictest17262-21tr10:10:280
259299548,16cyclictest16024-21find08:00:270
259299546,14cyclictest32388-21awk11:10:120
259299529,13cyclictest11746-21munin-node07:45:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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