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2025-07-01 - 08:19

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 20 highest latencies:
System rack4slot6s.osadl.org (updated Tue Jul 01, 2025 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
595121390,3sleep05954-21wc19:45:020
1524221320,3chrt15240-21load20:20:220
111121320,3sleep01113-21ntpq19:25:210
2003421310,4chrt20035-21munin-node22:45:130
2910921260,3chrt29111-21modprobe21:15:000
380921250,3chrt3808-21/usr/sbin/munin21:40:290
2190421230,3chrt21903-21awk22:50:300
1744321020,4sleep017493-21df22:35:160
119842980,2sleep011982-21sendmail_mailtr00:20:290
102172960,3sleep010218-21/usr/sbin/munin00:15:110
35692930,3sleep03594-21grep19:35:230
188982916,11sleep018939-21memory22:40:200
6692907,12sleep0719-21df21:30:140
22112830,3sleep02252-21if_eth019:30:180
321812820,2sleep032179-21irqstats19:20:220
2838328023,31sleep028409-21ntp_states19:05:200
60152785,63sleep025266-21snmpd21:50:220
241242770,2sleep024125-21sh20:55:150
129632730,2sleep012964-21awk00:25:170
152862650,2sleep015287-21cut00:35:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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