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2025-11-26 - 17:21

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 100 highest latencies:
System rack4slot6s.osadl.org (updated Wed Nov 26, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
839822670,2sleep08399-21systemctl11:55:270
3156122330,2sleep031563-21latency_hist07:10:020
851621730,3sleep08518-21cut09:50:270
1353421400,4chrt13531-21irqstats08:05:180
1103521370,3sleep011034-21ntp_kernel_err07:55:190
1698921320,3chrt16988-21sshd10:24:510
2274921290,4chrt22748-21mailstats10:45:270
3172521260,3sleep031723-21if_err_eth007:10:160
315279912533,16cyclictest6138-21/usr/sbin/munin07:35:280
3200221220,3sleep032001-21threads09:15:290
315279911724,12cyclictest13992-21seq10:11:370
31527991169,33cyclictest22184-21latency_hist10:45:010
31527991168,27cyclictest26357-21df08:55:130
315279911620,15cyclictest23609-21munin-plugin-st08:45:000
31527991157,12cyclictest7725-21apt-get11:54:200
315279911522,15cyclictest19934-21/usr/sbin/munin08:30:140
315279911427,15cyclictest2640-21sh11:35:020
315279911426,16cyclictest28646-21awk11:10:000
31527991139,22cyclictest11806-21sshd10:04:480
315279911328,14cyclictest15720-21latency_hist12:25:010
315279911327,13cyclictest9635-21ntpq09:55:210
315279911323,14cyclictest24390-21seq10:52:050
315279911313,20cyclictest15278-21seq08:10:300
315279911228,12cyclictest12389-21ntp_states08:00:240
315279911221,15cyclictest17340-21seq12:30:230
315279911123,15cyclictest5463-21/usr/sbin/munin11:45:150
315279911023,15cyclictest10625-21sshd07:54:480
315279911021,15cyclictest18834-21cat12:35:270
315279911020,15cyclictest1150-21runrttasks09:22:070
315279911019,17cyclictest17434-21ntpq10:25:230
315279911012,19cyclictest11173-21users12:05:290
31527991098,20cyclictest7192-21ntpq07:40:200
315279910927,16cyclictest29846-21runrttasks09:08:180
315279910925,16cyclictest19548-21runrttasks08:28:400
315279910924,14cyclictest2288-21threads07:20:290
315279910924,13cyclictest24179-21mailstats08:45:290
315279910923,13cyclictest5808-21/usr/sbin/munin09:40:230
315279910921,13cyclictest4118-21sshd07:29:200
315279910920,15cyclictest13822-21runrttasks12:16:010
315279910912,20cyclictest12459-21users12:10:290
315279910911,17cyclictest27802-21missed_timers09:00:180
315279910910,19cyclictest962-21sshd11:26:480
315279910829,15cyclictest10430-21runrttasks12:04:530
315279910826,15cyclictest18065-21runrttasks08:21:580
315279910825,15cyclictest2241-21runrttasks11:31:450
315279910822,14cyclictest18427-21seq10:30:120
315279910822,13cyclictest22189-21snmpd09:40:020
315279910820,15cyclictest6970-21latency09:45:190
31527991079,25cyclictest22189-21snmpd11:40:280
31527991079,18cyclictest8510-21ntp_states07:45:250
31527991079,15cyclictest25173-21ntp_states10:55:240
31527991077,14cyclictest30340-21/usr/sbin/munin09:10:170
315279910717,17cyclictest2231-21users09:25:340
315279910616,16cyclictest16033-21ntpq12:25:200
315279910612,21cyclictest11966-21/usr/sbin/munin10:05:200
315279910612,17cyclictest290542sleep011:10:220
315279910611,15cyclictest19996-21ntp_states10:35:230
31527991059,20cyclictest30530-21switchtime11:15:280
31527991047,14cyclictest31567-21seq11:20:190
315279910425,12cyclictest4613-21ntpq07:30:210
315279910413,18cyclictest17144-21idleruntime-cro08:20:010
315279910412,18cyclictest2978-21df_inode09:30:140
315279910410,17cyclictest21389-21ntp_kernel_pll_08:35:190
31527991029,12cyclictest746-21ntp_states07:15:260
31527991028,14cyclictest26191-21munin-node11:00:110
31527991026,12cyclictest14535-21/usr/sbin/munin10:15:100
3152799987,12cyclictest26176-21idleruntime-cro08:55:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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