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2026-07-20 - 02:54

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 Mon Jul 20, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1714522950,2sleep017142-21grep20:35:180
202322600,3sleep02021-21grep19:35:290
2971222480,2sleep029713-21latency_hist23:30:010
303321290,3chrt3030-21users23:50:280
1062221250,4chrt10623-21/usr/sbin/munin22:15:210
1593921210,3chrt15929-21netstat20:30:200
671321200,4chrt6711-21df19:55:140
676021190,4chrt6758-21ntpq22:00:180
359521190,4chrt3593-21sshd21:48:290
562921160,4chrt5627-21grep21:55:270
1444421150,4chrt14447-21cut00:35:240
2257521140,3chrt22578-21sed23:00:290
94162980,3sleep09480-21users00:15:280
52582970,3sleep05318-21grep19:50:020
81522930,3sleep08226-21grep22:05:280
2633229114,61sleep00-21swapper19:05:150
209902865,8sleep021033-21ps22:55:250
117812864,8sleep011784-21sh00:25:220
7042850,2chrt706-21switchtime19:30:290
102462840,3sleep010325-21wc22:15:010
323532828,63sleep032355-21sshd19:28:290
12062810,3sleep01207-21run-parts21:40:000
65102796,61sleep06524-21memory00:05:230
122722776,62sleep012273-21users22:20:290
211952690,2sleep021194-21pluginstate20:50:250
145082670,3sleep014510-21grep22:30:210
27405996213,20cyclictest18582-21ntp_states20:40:220
2740599609,18cyclictest24571-21/usr/sbin/munin23:10:250
27405996012,17cyclictest13087-21/usr/sbin/munin22:25:160
27405996011,16cyclictest5435-21/usr/sbin/munin00:00:270
2740599597,19cyclictest15528-21/usr/sbin/munin22:35:300
2740599597,18cyclictest10539-21/usr/sbin/munin20:10:270
2740599589,18cyclictest27646-21/usr/sbin/munin19:10:160
2740599589,17cyclictest32197-21munin-run23:40:000
2740599588,17cyclictest10798-21users00:20:290
2740599587,17cyclictest28790-21/usr/sbin/munin19:15:220
2740599587,16cyclictest9266-21/usr/sbin/munin20:05:310
27405995834,14cyclictest12965-21/usr/sbin/munin00:30:200
27405995832,17cyclictest869-21runrttasks23:43:450
27405995818,11cyclictest0-21swapper22:45:280
27405995817,14cyclictest288-21snmpd21:01:580
27405995810,16cyclictest7901-21ntp_states00:10:240
2740599579,15cyclictest19628-21df20:45:100
2740599578,17cyclictest27315-21/usr/sbin/munin23:20:160
2740599578,16cyclictest28796-21/usr/sbin/munin21:20:240
2740599578,14cyclictest5640-21ntpq19:50:200
27405995711,18cyclictest30223-21ntp_states21:25:210
2740599569,17cyclictest1159-21/usr/sbin/munin23:45:110
2740599568,16cyclictest7962-21/usr/sbin/munin20:00:130
2740599567,17cyclictest22150-21/usr/sbin/munin20:55:120
2740599566,17cyclictest26044-21/usr/sbin/munin21:10:120
27405995632,15cyclictest30182-21/usr/sbin/munin19:20:150
27405995632,15cyclictest25148-21/usr/sbin/munin21:05:260
27405995630,16cyclictest29826-21/usr/sbin/munin23:30:150
27405995615,14cyclictest17162-21open_inodes22:40:240
27405995611,15cyclictest31406-21memory21:30:200
27405995610,17cyclictest19403-21/usr/sbin/munin22:50:260
27405995610,14cyclictest14708-21ntp_states20:25:220
2740599559,15cyclictest13005-21munin-run20:20:010
2740599559,14cyclictest1347-21/usr/sbin/munin21:40:190
2740599558,15cyclictest25853-21/usr/sbin/munin23:15:240
2740599557,13cyclictest2808-21/usr/sbin/munin19:40:150
27405995526,21cyclictest5102-21runrttasks21:55:010
27405995510,18cyclictest3866-21irqstats23:55:160
2740599548,17cyclictest23556-21/usr/sbin/munin23:05:210
2740599548,15cyclictest13139-21/usr/sbin/munin20:20:180
2740599547,14cyclictest28507-21munin-plugin-st21:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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