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2026-08-31 - 16:03

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 all highest latencies:
System rack4slot6s.osadl.org (updated Mon Aug 31, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1815722260,3sleep018159-21if_eth012:10:170
1460221320,2sleep014604-21grep09:50:190
787721300,4chrt7715-21/usr/sbin/munin11:30:180
280721110,4sleep02857-21irqstats09:05:150
1588021000,3sleep015907-21ntpq09:55:210
1060721000,3sleep010626-21/usr/sbin/munin11:40:250
183022990,3sleep018334-21if_eth010:05:130
325022960,4sleep032549-21if_eth011:00:150
68272900,3sleep06875-21/usr/sbin/munin11:25:280
128722900,4sleep012874-21/usr/sbin/munin11:50:120
193862880,4sleep019405-21idleruntime12:15:150
280122845,9sleep028013-21users08:35:290
179242830,3sleep017966-21wc12:10:020
247732800,3sleep024774-21basename10:30:160
247992740,2sleep024801-21latency_hist08:25:010
427726917,27sleep04320-21irqstats07:05:160
5377996733,23cyclictest1332-21latency_hist09:00:010
257052640,2sleep025703-21cat12:40:020
238732633,7sleep023874-21sshd12:31:000
5377996125,12cyclictest8585-21grep07:20:280
5377996119,14cyclictest31118-21/usr/sbin/munin10:55:210
5377996034,17cyclictest4108-21/usr/sbin/munin09:10:150
5377996033,17cyclictest7120-21/usr/sbin/munin07:15:240
5377996033,17cyclictest17220-21/usr/sbin/munin10:00:190
5377996033,16cyclictest2678-21/usr/sbin/munin11:10:130
5377996032,16cyclictest23942-21/usr/sbin/munin10:25:270
5377996022,14cyclictest22459-21/usr/sbin/munin10:20:260
537799599,15cyclictest5006-21munin-run11:20:010
537799598,17cyclictest30014-21/usr/sbin/munin08:45:200
537799598,16cyclictest20848-21df_inode10:15:120
537799598,16cyclictest11785-21cat11:45:180
5377995933,17cyclictest13199-21/usr/sbin/munin09:45:160
5377995916,15cyclictest21863-21date12:25:010
5377995910,14cyclictest5700-21find09:15:250
537799589,17cyclictest5731-21/usr/sbin/munin07:10:190
537799589,16cyclictest27271-21/usr/sbin/munin10:40:300
537799588,17cyclictest14448-21ntp_states11:55:230
5377995833,15cyclictest18527-21/usr/sbin/munin08:00:160
5377995832,16cyclictest29919-21/usr/sbin/munin10:50:160
5377995825,24cyclictest26879-21runrttasks08:31:360
5377995810,21cyclictest6613-21/usr/sbin/munin09:20:120
5377995810,17cyclictest21374-21find08:10:260
5377995810,16cyclictest5141-21/usr/sbin/munin11:20:230
5377995810,15cyclictest28919-21memory08:40:180
5377995810,15cyclictest11779-21grep09:40:100
537799578,15cyclictest10943-21ntp_states07:30:240
537799577,17cyclictest22254-21/usr/sbin/munin08:15:170
537799577,14cyclictest10755-21ntp_states09:35:230
5377995734,15cyclictest9851-21runrttasks09:30:580
5377995729,16cyclictest16059-21/usr/sbin/munin07:50:210
537799569,16cyclictest17244-21ls07:55:180
537799569,15cyclictest24994-21irqstats08:25:160
537799568,15cyclictest7897-21/usr/sbin/munin09:25:180
537799567,15cyclictest19698-21memory10:10:180
5377995633,15cyclictest12261-21/usr/sbin/munin07:35:250
5377995633,14cyclictest22053-21/usr/sbin/munin12:25:160
5377995632,15cyclictest9496-21/usr/sbin/munin07:25:160
5377995629,16cyclictest20848-21latency_hist08:10:010
5377995610,16cyclictest26008-21df10:35:120
5377995610,13cyclictest15656-21memory12:00:190
537799559,14cyclictest8995-21/usr/sbin/munin11:35:210
537799557,14cyclictest31295-21/usr/sbin/munin08:50:120
5377995532,15cyclictest1336-21/usr/sbin/munin11:05:140
5377995531,15cyclictest29232-21runrttasks10:46:050
537799549,17cyclictest1619-21memory09:00:180
5377995431,14cyclictest14600-21/usr/sbin/munin07:45:150
5377995410,15cyclictest14401-21munin-run07:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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