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2026-03-10 - 23:29

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 highest latencies:
System rack4slot6s.osadl.org (updated Tue Mar 10, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2148522540,2sleep021482-21grep12:25:260
2650222100,3sleep026506-21if_err_eth008:35:160
1612521270,3chrt16123-21df_inode07:55:120
3198821250,3sleep031989-21wc11:00:280
2822721230,3chrt28226-21timerandwakeup08:40:260
1489121150,3chrt14893-21grep12:00:240
200212950,3sleep020053-21grep10:15:180
49542900,3sleep05031-21ls07:10:270
44282870,3sleep04431-21sh11:20:230
159722870,4sleep015921-21/usr/sbin/munin10:00:130
241732867,63sleep024242-21/usr/sbin/munin10:30:260
305622837,64sleep030564-21ntp_states08:50:210
105612830,2sleep010562-21modprobe11:45:020
135352825,62sleep013584-21which11:55:240
135522776,59sleep013558-21df_inode07:45:130
342427319,31sleep03441-21ntp_states07:05:200
4355996520,15cyclictest22321-21date10:25:010
435599628,20cyclictest31560-21/usr/sbin/munin08:55:200
4355996237,16cyclictest22381-21/usr/sbin/munin12:30:160
435599608,17cyclictest14608-21/usr/sbin/munin09:55:300
4355996026,22cyclictest0-21swapper08:33:210
435599598,16cyclictest28819-21/usr/sbin/munin10:50:190
4355995917,13cyclictest3288-21ntp_states09:10:230
4355995910,18cyclictest12043-21grep09:45:090
4355995910,17cyclictest21369-21/usr/sbin/munin08:15:160
435599589,19cyclictest1784-21ntpq11:10:190
435599588,17cyclictest18892-21runrttasks10:10:250
435599587,16cyclictest19676-21/usr/sbin/munin12:20:130
435599586,18cyclictest401-21/usr/sbin/munin11:05:160
4355995834,15cyclictest7172-21/usr/sbin/munin09:25:210
4355995833,16cyclictest27750-21/usr/sbin/munin10:45:200
4355995833,15cyclictest18724-21/usr/sbin/munin12:15:250
4355995832,16cyclictest5524-21/usr/sbin/munin11:25:150
4355995831,15cyclictest17294-21/usr/sbin/munin10:05:150
4355995810,17cyclictest13325-21/usr/sbin/munin09:50:260
435599578,16cyclictest18717-21df08:05:130
435599578,16cyclictest17468-21runrttasks12:10:260
435599577,17cyclictest9296-21/usr/sbin/munin11:40:180
4355995733,16cyclictest24987-21/usr/sbin/munin10:35:100
4355995733,15cyclictest6849-21/usr/sbin/munin11:30:150
4355995733,15cyclictest4596-21/usr/sbin/munin09:15:220
4355995732,16cyclictest15173-21/usr/sbin/munin07:50:240
4355995732,16cyclictest12144-21/usr/sbin/munin11:50:200
4355995732,15cyclictest23858-21/usr/sbin/munin12:35:240
4355995731,16cyclictest30184-21/usr/sbin/munin10:55:150
4355995730,16cyclictest7243-21/usr/sbin/munin07:20:170
4355995719,13cyclictest133352chrt07:44:450
4355995710,18cyclictest29054-21df_inode08:45:140
4355995710,16cyclictest9683-21df_inode07:30:150
4355995710,15cyclictest8528-21memory07:25:180
435599569,19cyclictest22551-21/usr/sbin/munin08:20:240
435599569,16cyclictest5877-21/usr/sbin/munin09:20:210
435599569,15cyclictest10960-21df07:35:130
435599568,16cyclictest7987-21/usr/sbin/munin11:35:290
435599567,16cyclictest6919-21munin-plugin-st07:20:000
435599567,16cyclictest26254-21/usr/sbin/munin10:40:280
435599567,15cyclictest22379-21/usr/sbin/munin10:25:250
4355995632,15cyclictest24315-21runrttasks08:25:280
4355995630,16cyclictest11444-21runrttasks09:41:070
435599559,15cyclictest2898-21chrt11:15:130
435599558,16cyclictest19949-21/usr/sbin/munin08:10:250
435599558,15cyclictest1759-21df_inode09:05:120
435599558,14cyclictest401-21/usr/sbin/munin09:00:130
4355995532,13cyclictest16269-21/usr/sbin/munin12:05:280
4355995512,17cyclictest9738-21ntp_states09:35:220
435599548,18cyclictest8414-21netstat09:30:190
4355995429,16cyclictest18377-21runrttasks08:03:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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