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2025-12-23 - 15:48

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 Tue Dec 23, 2025 12:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3131222600,2sleep031314-21timerwakeupswit12:25:290
2083322450,3sleep020834-21sh09:40:220
935222360,2sleep09350-21grep08:55:270
2469421190,4chrt24686-21ntp_states09:55:240
1136721160,4chrt11363-21awk09:05:000
2872021150,4chrt28718-21awk10:10:250
283221150,2sleep02834-21uname08:30:240
1398321100,3sleep013984-21latency_hist09:15:010
3120621080,4chrt31207-21/usr/sbin/munin10:20:250
202482920,3sleep020237-21latency_hist11:45:020
1408427922,32sleep014109-21munin-run07:10:010
94742646,50sleep0288-21snmpd11:01:300
14132996317,15cyclictest32321-21/usr/sbin/munin12:30:230
14132996310,19cyclictest25573-21/usr/sbin/munin12:05:200
14132996229,24cyclictest28497-21runrttasks08:05:120
14132996218,13cyclictest21691-21/usr/sbin/munin11:50:130
14132996124,16cyclictest0-21swapper10:59:510
14132996110,16cyclictest1494-21seq12:35:500
1413299607,18cyclictest20504-21irqstats11:45:160
14132996036,15cyclictest15530-21/usr/sbin/munin11:25:240
14132996035,15cyclictest16713-21/usr/sbin/munin11:30:200
14132996021,15cyclictest19191-21runrttasks09:35:020
14132996011,16cyclictest14245-21egrep07:10:130
14132995934,17cyclictest22262-21/usr/sbin/munin07:40:200
14132995933,16cyclictest1220-21/usr/sbin/munin08:25:150
14132995927,19cyclictest0-21swapper10:05:100
14132995912,15cyclictest216-21rs:main0
14132995910,15cyclictest22094-21ntpq09:45:180
1413299589,17cyclictest30880-21cron08:15:000
1413299589,16cyclictest7158-21seq10:53:530
1413299589,16cyclictest4859-21/usr/sbin/munin10:45:140
1413299589,15cyclictest19425-21memory09:35:190
1413299589,14cyclictest3574-21/usr/sbin/munin10:40:130
1413299588,17cyclictest20689-21/usr/sbin/munin07:35:270
1413299588,16cyclictest13915-21/usr/sbin/munin11:20:270
14132995834,16cyclictest14168-21/usr/sbin/munin09:15:130
14132995833,16cyclictest5319-21/usr/sbin/munin08:40:210
14132995833,16cyclictest23672-21/usr/sbin/munin09:50:270
14132995832,16cyclictest10203-21/usr/sbin/munin11:05:160
14132995810,15cyclictest19701-21ntp_states07:30:260
1413299579,16cyclictest17775-21/usr/sbin/munin11:35:290
1413299578,15cyclictest16669-21/usr/sbin/munin09:25:270
1413299578,15cyclictest15380-21/usr/sbin/munin09:20:270
14132995734,15cyclictest30108-21/usr/sbin/munin10:15:280
14132995732,15cyclictest12658-21/usr/sbin/munin11:15:120
14132995726,22cyclictest29669-21sshd12:20:170
14132995712,18cyclictest25727-21munin-run07:55:010
14132995710,15cyclictest25989-21irqstats07:55:160
1413299569,17cyclictest15656-21irqstats07:15:140
1413299569,15cyclictest24334-21df12:00:110
1413299569,12cyclictest235672sleep007:45:210
14132995635,14cyclictest27451-21runrttasks12:10:280
14132995633,14cyclictest11816-21/usr/sbin/munin09:05:250
14132995632,14cyclictest31221-21/usr/sbin/munin08:15:180
14132995631,17cyclictest1967-21runrttasks10:33:380
14132995613,29cyclictest32162-21/usr/sbin/munin10:25:290
14132995610,16cyclictest6579-21ntpq08:45:210
14132995610,16cyclictest28280-21irqstats12:15:170
1413299559,13cyclictest236212chrt11:55:500
1413299558,14cyclictest32335-21/usr/sbin/munin08:20:210
1413299558,14cyclictest11603-21ntp_states11:10:230
14132995532,15cyclictest26180-21/usr/sbin/munin10:00:260
14132995511,16cyclictest16969-21if_eth007:20:160
14132995510,17cyclictest276-21runrttasks08:37:420
14132995510,16cyclictest18308-21memory07:25:160
1413299549,16cyclictest2266-21/usr/sbin/munin10:35:170
1413299548,15cyclictest27154-21/usr/sbin/munin08:00:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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