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2026-06-27 - 13:20

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 792 highest latencies:
System rack4slot6s.osadl.org (updated Sat Jun 27, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2828423050,2sleep028283-21sort21:50:270
2483722480,4sleep024838-21munin-run23:45:000
1743822420,2sleep017436-21netstat23:15:200
489021330,3sleep04889-21uptime22:25:280
3029921260,3sleep030302-21sed00:05:180
2543421240,3chrt25433-21/usr/sbin/munin23:45:250
1279321230,3chrt12791-21users20:50:280
1887421200,3chrt18877-21processes23:20:240
2030021190,3chrt20302-21sed19:15:190
3065421030,3sleep030719-21systemctl22:00:260
79721020,4sleep0848-21/usr/sbin/munin22:10:260
1237621020,4sleep012457-21mailstats22:55:230
567721010,3sleep05678-21ntp_states00:35:210
320202990,4sleep031717-21/usr/sbin/munin20:00:250
293452990,4sleep029344-21wc21:55:260
325702950,2sleep032571-21modprobe00:15:010
266982930,2sleep026694-21ntpq21:45:220
157732919,66sleep015799-21cat23:10:010
304902880,3sleep030526-21if_eth019:55:160
18972860,4sleep01957-21awk22:15:180
1762027519,31sleep017637-21irqstats19:05:150
69252670,3sleep06927-21latency_hist20:30:010
1869699619,18cyclictest4400-21ntp_states00:30:220
18696996135,15cyclictest24024-21/usr/sbin/munin21:35:180
18696996127,24cyclictest23810-21latency_hist21:35:010
18696996113,17cyclictest20040-21df_inode21:20:120
18696996035,16cyclictest25798-21/usr/sbin/munin19:35:270
18696996010,17cyclictest795-21ntpq20:05:190
1869699599,17cyclictest18795-21/usr/sbin/munin19:10:140
1869699598,14cyclictest3302-21ntp_states22:20:220
18696995934,16cyclictest28636-21runrttasks19:47:020
18696995911,20cyclictest6919-21df_inode22:35:120
1869699588,17cyclictest26562-21chrt19:40:110
18696995838,13cyclictest17280-21latency_hist21:10:010
18696995834,17cyclictest24376-21/usr/sbin/munin19:30:250
18696995833,16cyclictest29304-21/usr/sbin/munin19:50:160
1869699579,17cyclictest3116-21ntpq00:25:220
1869699579,17cyclictest13623-21ntp_states23:00:220
1869699578,17cyclictest17376-21/usr/sbin/munin21:10:250
1869699578,17cyclictest11000-21ntpq22:50:190
1869699578,15cyclictest27521-21/usr/sbin/munin23:55:280
18696995735,14cyclictest19929-21/usr/sbin/munin23:25:160
18696995733,16cyclictest8614-21/usr/sbin/munin20:35:240
18696995732,16cyclictest9942-21/usr/sbin/munin22:45:270
18696995732,16cyclictest8322-21/usr/sbin/munin22:40:150
18696995710,15cyclictest21371-21ntp_states23:30:210
1869699569,19cyclictest4431-21/usr/sbin/munin20:20:150
1869699569,16cyclictest7000-21/usr/sbin/munin20:30:120
1869699569,14cyclictest31642-21df22:05:120
1869699569,14cyclictest26334-21cat23:50:140
1869699568,15cyclictest21397-21/usr/sbin/munin19:20:240
1869699568,14cyclictest15906-21/usr/sbin/munin23:10:130
18696995633,15cyclictest29104-21/usr/sbin/munin00:00:200
18696995633,15cyclictest25446-21runrttasks21:40:240
18696995633,15cyclictest13750-21/usr/sbin/munin20:55:200
18696995630,17cyclictest22998-21/usr/sbin/munin19:25:250
18696995610,17cyclictest11511-21users20:45:290
18696995610,15cyclictest23536-21munin-run23:40:000
1869699559,16cyclictest19504-21sshd21:17:210
1869699559,14cyclictest1804-21/usr/sbin/munin00:20:190
1869699558,16cyclictest14791-21/usr/sbin/munin21:00:270
1869699558,15cyclictest5580-21/usr/sbin/munin22:30:200
18696995530,16cyclictest1352-21runrttasks00:19:430
1869699548,15cyclictest10035-21ps20:40:260
18696995432,15cyclictest21351-21/usr/sbin/munin21:25:160
18696995430,16cyclictest3239-21/usr/sbin/munin20:15:150
1869699537,15cyclictest2016-21/usr/sbin/munin20:10:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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