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2025-09-17 - 22:59

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 Wed Sep 17, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1178721740,3sleep011784-21ntp_kernel_pll_11:45:200
2656721380,2sleep026570-21sort08:30:270
2004721340,3chrt20049-21sed08:05:280
667021300,3chrt6668-21ntp_states11:25:270
49221230,2sleep0490-21users11:00:300
2265921190,2sleep022658-21timerandwakeup08:15:290
2389321000,4sleep023959-21/usr/sbin/munin08:20:290
289142990,3sleep028949-21proc_pri08:40:290
107062970,4sleep010758-21ntpq07:30:220
52022950,3sleep05189-21latency_hist07:10:010
236202940,3sleep023666-21ps10:25:280
230462920,4sleep023116-21latency_hist12:30:010
101772840,2sleep010178-21latency_hist11:40:020
225392814,63sleep022613-21sed10:20:310
130922755,58sleep013105-21ntp_states11:50:240
29552740,3sleep03024-21cat11:10:300
5222996925,15cyclictest10216-21sshd09:34:550
217452653,6sleep00-21swapper08:13:030
5222996425,15cyclictest14238-21irqstats11:55:180
5222996116,15cyclictest12826-21cron09:45:010
5222996110,17cyclictest11777-21/usr/sbin/munin07:35:280
522299608,24cyclictest2611-21/usr/sbin/munin09:05:160
5222996036,15cyclictest14817-21/usr/sbin/munin07:45:280
5222996035,16cyclictest7122-21/usr/sbin/munin07:15:270
5222996024,13cyclictest32272-21latency_hist11:00:020
522299598,17cyclictest24724-21ntpq12:35:220
5222995935,16cyclictest18172-21/usr/sbin/munin12:10:180
5222995922,25cyclictest16008-21/usr/sbin/munin09:55:270
5222995911,17cyclictest1675-21/usr/sbin/munin11:05:300
5222995910,17cyclictest15547-21irqstats12:00:170
522299589,17cyclictest16950-21/usr/sbin/munin07:55:130
522299589,14cyclictest8442-21grep07:20:280
522299588,19cyclictest22189-21snmpd11:30:260
522299588,16cyclictest10966-21sshd11:41:260
5222995834,15cyclictest8388-21/usr/sbin/munin09:25:300
5222995831,16cyclictest18467-21/usr/sbin/munin10:05:260
5222995815,15cyclictest5450-21awk09:15:200
5222995810,17cyclictest24728-21/usr/sbin/munin08:25:220
522299579,16cyclictest16700-21/usr/sbin/munin12:05:130
522299578,16cyclictest5322-21/usr/sbin/munin07:10:200
522299577,17cyclictest23447-21/usr/sbin/munin12:30:220
522299577,16cyclictest4304-21find09:10:270
5222995734,15cyclictest1974-21runrttasks09:00:570
5222995733,15cyclictest13558-21/usr/sbin/munin09:45:310
5222995732,16cyclictest27011-21runrttasks10:39:550
5222995732,16cyclictest13147-21df07:40:120
5222995732,16cyclictest10122-21runrttasks07:28:040
5222995712,17cyclictest10548-21memory09:35:170
5222995710,17cyclictest5363-21ntpq11:20:200
522299569,19cyclictest19480-21cat12:15:190
522299569,18cyclictest3906-21latency11:15:190
522299569,17cyclictest20705-21/usr/sbin/munin10:15:250
522299569,14cyclictest28381-21seq08:39:310
5222995625,14cyclictest18026-21wc10:05:010
5222995611,16cyclictest19431-21awk08:05:010
522299559,17cyclictest14295-21df09:50:130
522299559,13cyclictest31176-21/usr/sbin/munin08:50:290
522299558,18cyclictest20845-21ntpq12:20:210
522299557,17cyclictest29759-21/usr/sbin/munin10:50:280
5222995532,14cyclictest25040-21/usr/sbin/munin10:30:290
5222995510,31cyclictest30396-21ls08:45:280
5222995510,18cyclictest27254-21df_inode10:40:150
522299549,17cyclictest15947-21ntp_states07:50:240
522299549,14cyclictest19419-21/usr/sbin/munin10:10:190
5222995410,16cyclictest32684-21chrt08:55:200
5222995330,15cyclictest29070-21users10:45:290
5222995310,15cyclictest6928-21/usr/sbin/munin09:20:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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