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2026-06-20 - 14:50

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 Sat Jun 20, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
893922560,2sleep08940-21timerwakeupswit10:55:290
994721480,3sleep09946-21tr11:00:210
185821340,3chrt1731-21/usr/sbin/munin12:35:160
1247921300,4chrt12477-21df09:05:130
2305921260,3chrt23057-21ntp_states09:45:210
2220021250,3sleep022201-21cat07:35:300
1889521250,3chrt18893-21memory11:35:190
458321230,2sleep04585-21latency_hist08:35:020
2156221230,4chrt21564-21awk11:45:180
378221170,3chrt3783-21timerwakeupswit10:35:280
2075521140,2sleep020754-21find07:30:260
1407721130,4chrt14078-21timerandwakeup11:15:270
1628721080,2sleep016290-21latency11:25:150
3165121040,3sleep031669-21idleruntime-cro10:19:590
178321010,3sleep01794-21cron10:30:000
99702990,4sleep09989-21/usr/sbin/munin08:55:180
9082910,3sleep0974-21timerandwakeup12:30:260
194242880,2sleep019420-21ps07:25:260
161902840,3sleep016191-21modprobe09:20:010
203992800,2sleep020402-21processes11:40:260
178152790,3sleep017872-21grep09:25:210
1416127923,32sleep014169-21ntp_states07:05:190
22212764,59sleep02264-21ps10:30:240
22272690,2sleep02229-21if_eth008:25:170
15084996627,13cyclictest17174-21runrttasks09:22:300
15084996122,28cyclictest11463-21/usr/sbin/munin09:00:240
1508499609,18cyclictest25507-21/usr/sbin/munin07:50:120
1508499609,18cyclictest18892-21/usr/sbin/munin09:30:290
1508499607,20cyclictest22576-21/usr/sbin/munin11:50:260
15084996036,15cyclictest28079-21/usr/sbin/munin10:05:170
15084996035,16cyclictest15404-21/usr/sbin/munin11:20:280
15084996021,13cyclictest276-21runrttasks08:02:030
15084996010,16cyclictest29442-21df08:05:120
1508499599,16cyclictest16467-21/usr/sbin/munin07:15:180
1508499599,16cyclictest15268-21fw_packets07:10:150
15084995935,16cyclictest26888-21/usr/sbin/munin07:55:150
15084995934,16cyclictest18320-21/usr/sbin/munin07:20:280
15084995933,16cyclictest30926-21/usr/sbin/munin12:20:280
1508499589,17cyclictest5853-21df_inode10:45:130
1508499589,16cyclictest31956-21/usr/sbin/munin08:15:130
15084995834,15cyclictest32093-21/usr/sbin/munin12:25:250
15084995830,17cyclictest27029-21/usr/sbin/munin12:05:300
15084995812,18cyclictest24532-21/usr/sbin/munin07:45:240
15084995811,16cyclictest25578-21/usr/sbin/munin09:55:190
1508499579,18cyclictest1008-21missed_timers08:20:180
1508499579,17cyclictest25051-21sendmail-msp12:00:010
1508499579,15cyclictest30676-21/usr/sbin/munin08:10:250
1508499579,15cyclictest29183-21sshd12:15:160
1508499579,15cyclictest20315-21irqstats09:35:160
1508499578,16cyclictest31815-21/usr/sbin/munin10:20:290
1508499577,15cyclictest4668-21/usr/sbin/munin08:35:150
15084995734,14cyclictest7519-21/usr/sbin/munin08:45:190
15084995733,15cyclictest6033-21runrttasks08:40:130
15084995729,17cyclictest28500-21runrttasks12:11:450
15084995725,22cyclictest25416-21netstat12:00:190
15084995710,15cyclictest22946-21/usr/sbin/munin07:40:200
1508499569,15cyclictest7162-21fw_packets10:50:150
15084995632,16cyclictest29461-21/usr/sbin/munin10:10:200
15084995632,16cyclictest24488-21/usr/sbin/munin09:50:260
15084995632,16cyclictest17558-21/usr/sbin/munin11:30:160
15084995631,15cyclictest4760-21/usr/sbin/munin10:40:190
15084995528,17cyclictest9228-21runrttasks08:51:080
15084995517,14cyclictest13862-21irqstats09:10:160
15084995510,16cyclictest11229-21ntpq11:05:200
15084995510,14cyclictest21782-21ntp_states09:40:260
1508499549,15cyclictest12714-21/usr/sbin/munin11:10:260
1508499548,15cyclictest26639-21/usr/sbin/munin10:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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