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2025-11-05 - 17:20

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 Wed Nov 05, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1015422510,2sleep010152-21idleruntime12:00:170
1564021490,4chrt15635-21ntp_states10:15:240
2077821410,4chrt20777-21awk10:35:220
1556821370,4chrt15569-21/usr/sbin/munin08:10:160
2034121340,4chrt20340-21ls12:40:020
1931921310,3chrt19322-21latency_hist08:25:020
645021300,4chrt6447-21ntpq11:45:230
149221260,3chrt1490-21ntp_offset07:15:220
322889912210,19cyclictest28303-21/usr/sbin/munin11:05:370
32288991188,15cyclictest31119-21ntpq11:15:210
32288991187,18cyclictest19008-21ls12:35:000
32288991187,16cyclictest23130-21/usr/sbin/munin10:45:200
322889911810,18cyclictest8774-21munin-run09:50:000
32288991169,15cyclictest4193-21/usr/sbin/munin07:25:250
32288991169,14cyclictest1440-21ntpq09:20:210
32288991167,16cyclictest22189-21snmpd11:35:290
32288991167,14cyclictest12963-21/usr/sbin/munin12:10:250
322889911623,14cyclictest12233-21runrttasks12:07:490
322889911620,14cyclictest3142-21seq11:32:290
31649211617,74sleep031672-21users07:05:260
32288991159,15cyclictest25131-21users08:45:290
32288991158,17cyclictest25691-21/usr/sbin/munin10:55:250
32288991157,20cyclictest10830-21runrttasks09:55:530
32288991157,13cyclictest27693-21/usr/sbin/munin08:55:290
322889911522,18cyclictest4065-21pluginstate09:30:300
322889911511,16cyclictest2537-21/usr/sbin/munin07:20:320
322889911511,14cyclictest7887-21irqstats07:40:170
32288991149,13cyclictest13037-21tr10:05:210
32288991148,15cyclictest1198-21chrt11:25:170
32288991148,14cyclictest3608-21/usr/sbin/munin09:30:010
32288991147,17cyclictest25826-21/usr/sbin/munin08:50:290
32288991147,15cyclictest979-21chrt09:19:530
322889911412,20cyclictest28606-21memory09:00:160
322889911410,17cyclictest21981-21irqstats10:40:180
32288991138,18cyclictest5839-21seq11:43:190
32288991138,15cyclictest27269-21ntp_kernel_pll_11:00:210
32288991138,14cyclictest30012-21/usr/sbin/munin11:10:250
322889911314,13cyclictest23880-21runrttasks08:40:370
322889911311,16cyclictest24462-21df10:50:140
32288991129,13cyclictest9078-21memory09:50:170
32288991129,13cyclictest22208-21ntpq08:35:200
32288991128,22cyclictest9299-21ntpq07:45:210
32288991128,15cyclictest19678-21ntpq08:25:240
32288991128,13cyclictest8564-21sshd11:54:370
32288991127,16cyclictest5978-21chrt07:32:210
32288991127,15cyclictest20944-21ntp_states08:30:210
32288991127,14cyclictest7472-21chrt07:39:050
32288991126,14cyclictest19410-21latency10:30:210
322889911210,15cyclictest11546-21df_inode10:00:130
32288991118,16cyclictest18666-21chrt10:26:210
32288991118,14cyclictest32373-21memory11:20:160
32288991118,14cyclictest17068-21ntp_states08:15:250
32288991118,13cyclictest10581-21/usr/sbin/munin07:50:200
32288991117,15cyclictest14173-21grep12:15:210
32288991117,14cyclictest6833-21sort09:40:290
32288991116,14cyclictest17459-21chrt12:28:130
32288991109,19cyclictest14206-21/usr/sbin/munin08:05:180
32288991108,15cyclictest15236-21/usr/sbin/munin12:20:190
32288991107,14cyclictest789-21chrt07:12:370
32288991107,13cyclictest13980-21chrt08:04:160
322889911011,17cyclictest30007-21ntp_states09:05:240
32288991099,19cyclictest8745-21/usr/sbin/munin11:55:190
32288991098,13cyclictest17405-21seq10:21:330
32288991096,15cyclictest14406-21proc_pri10:10:240
322889910916,16cyclictest5541-21/usr/sbin/munin09:35:330
32288991088,12cyclictest31307-21ntpq09:10:240
32288991078,17cyclictest11602-21/usr/sbin/munin07:55:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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