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2025-11-16 - 04:13

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 Sun Nov 16, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2129022180,2sleep021289-21/usr/sbin/munin21:30:160
2771621500,2sleep027717-21/usr/sbin/munin21:55:140
1786021450,3sleep017863-21fgrep19:10:290
2297421350,2sleep022977-21grep21:35:280
1247921250,3sleep012482-21cut23:00:280
2161221220,4chrt21613-21/usr/sbin/munin23:35:310
728321070,2sleep07282-21open_inodes20:35:270
2922021030,2sleep029223-21wc00:05:260
1869921000,4sleep018723-21/usr/sbin/munin21:20:140
37212960,3sleep03112-21/usr/sbin/munin20:20:330
31662920,3sleep03183-21/usr/sbin/munin22:25:220
315052880,2sleep031508-21df_inode00:15:160
251322845,8sleep025143-21ls23:50:190
304672804,63sleep030496-21proc_pri00:10:300
1629527719,31sleep016336-21/usr/sbin/munin19:05:200
292212755,59sleep029224-21irqstats19:55:200
306332725,8sleep030661-21grep20:00:190
199192705,53sleep019969-21df21:25:120
17355996933,26cyclictest26501-21/usr/sbin/munin23:55:210
17355996826,15cyclictest28591-21sshd00:03:480
239692660,2sleep023968-21df19:35:150
225022620,2sleep022503-21idleruntime-cro19:30:000
1735599617,19cyclictest26510-21/usr/sbin/munin19:45:300
1735599609,24cyclictest32416-21runrttasks22:12:440
17355995915,15cyclictest30739-21/usr/sbin/munin22:05:270
17355995910,17cyclictest22189-21snmpd23:08:010
1735599589,17cyclictest2331-21sshd22:20:470
1735599588,17cyclictest15189-21who23:10:320
1735599587,18cyclictest22374-21/usr/sbin/munin23:40:270
1735599587,17cyclictest9424-21/usr/sbin/munin22:50:220
17355995833,16cyclictest19859-21/usr/sbin/munin23:30:140
17355995833,16cyclictest16163-21/usr/sbin/munin23:15:220
17355995821,13cyclictest269-21runrttasks22:55:170
17355995810,17cyclictest5220-21sshd22:33:290
1735599579,16cyclictest9561-21/usr/sbin/munin20:45:320
1735599579,16cyclictest8277-21/usr/sbin/munin20:40:200
1735599579,16cyclictest4155-21/usr/sbin/munin00:35:220
1735599579,15cyclictest14729-21/usr/sbin/munin21:05:150
1735599578,17cyclictest5874-21memory20:30:230
1735599578,15cyclictest13437-21/usr/sbin/munin21:00:260
1735599577,16cyclictest16020-21/usr/sbin/munin21:10:300
1735599576,16cyclictest28978-21grep22:00:150
17355995710,16cyclictest6689-21cron22:40:020
116622573,9sleep00-21swapper20:52:190
1735599569,34cyclictest22189-21snmpd00:28:460
1735599569,17cyclictest1793-21/usr/sbin/munin20:15:170
1735599569,14cyclictest3013-21irqstats00:30:180
1735599568,16cyclictest18499-21/usr/sbin/munin23:25:320
1735599568,15cyclictest28372-21uptime19:50:300
1735599568,15cyclictest17313-21/usr/sbin/munin21:15:140
1735599567,16cyclictest31681-21/usr/sbin/munin20:05:240
1735599567,14cyclictest12419-21ntp_states20:55:270
17355995633,14cyclictest5867-21/usr/sbin/munin22:35:260
17355995632,14cyclictest18807-21/usr/sbin/munin19:15:170
17355995630,15cyclictest17255-21/usr/sbin/munin23:20:140
17355995610,16cyclictest16707-21rs:main0
17355995610,15cyclictest26666-21ntp_states21:50:260
1735599559,15cyclictest23808-21/usr/sbin/munin21:40:270
1735599558,16cyclictest25306-21ls21:45:210
1735599558,16cyclictest22189-21snmpd20:12:160
1735599557,16cyclictest25226-21/usr/sbin/munin19:40:180
17355995532,15cyclictest5530-21runrttasks20:29:570
17355995510,16cyclictest818-21/usr/sbin/munin00:20:280
1735599549,14cyclictest8138-21/usr/sbin/munin22:45:160
1735599548,15cyclictest363-21/usr/sbin/munin22:15:120
17355995429,15cyclictest24502-21runrttasks23:47:310
1735599538,16cyclictest22911-21ntp_states19:30:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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