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2025-05-05 - 01:14

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 Sun May 04, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
729522430,2sleep07296-21missed_timers07:55:210
2974222410,3sleep029744-21wc07:15:290
2629522230,65sleep026299-21modprobe09:10:010
2362721500,3sleep023653-21cpu11:05:140
3208621480,2sleep032090-21wc09:30:300
1173721430,4chrt11740-21wc12:25:020
1225321410,3chrt12254-21missed_timers10:20:190
1574721320,2sleep015749-21modprobe10:35:000
457021200,2sleep04569-21cpu07:45:160
52532920,3sleep05254-21sshd09:53:330
314682880,2sleep031469-21if_eth011:35:160
30922860,3sleep03093-21latency_hist07:40:010
2713027618,32sleep027202-21users07:05:300
238772685,51sleep023909-21df09:00:130
120502684,52sleep012076-21ntp_states12:25:220
27809996019,15cyclictest300952chrt09:24:170
27809996017,13cyclictest22342-21seq11:00:140
2780999599,16cyclictest26459-21grep11:15:210
2780999598,18cyclictest14833-21/usr/sbin/munin08:25:200
27809995910,18cyclictest9663-21chrt12:15:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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