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2026-07-09 - 16:00

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 Thu Jul 09, 2026 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1043322580,3sleep010432-21sort12:15:020
1321022510,2sleep013211-21cat12:25:150
1883922190,3sleep018840-21which10:40:260
1081421250,3chrt10813-21/usr/sbin/munin12:15:250
1266221190,2sleep012661-21timerandwakeup08:10:260
2386021150,4sleep023871-21ntp_states11:00:200
704821080,3chrt7051-21sort07:50:150
3198921060,2sleep031988-21cut09:25:260
2894921040,4sleep028957-21missed_timers11:20:170
111421010,3sleep0515-21/usr/sbin/munin07:25:290
293912990,3sleep029420-21sshd07:10:220
158302950,2sleep015832-21/usr/sbin/munin10:30:100
214642890,4sleep021467-21sh08:45:240
163132890,3sleep016343-21/usr/sbin/munin08:25:260
186402850,4sleep018657-21/usr/sbin/munin08:35:140
28997998455,19cyclictest9384-21/usr/sbin/munin10:05:210
28997998252,19cyclictest10854-21/usr/sbin/munin10:10:180
28997998157,14cyclictest14608-21/usr/sbin/munin10:25:120
28997997956,14cyclictest5800-21if_eth007:45:140
28997997951,17cyclictest13576-21awk10:20:260
28997997950,18cyclictest31520-21memory11:30:170
28997997949,20cyclictest11860-21df_inode12:20:140
28997997944,23cyclictest5310-21/usr/sbin/munin11:55:210
28997997936,16cyclictest22564-21ntpq10:55:220
28997997857,13cyclictest4500-21/usr/sbin/munin09:45:210
28997997849,17cyclictest3086-21/usr/sbin/munin07:35:250
28997997753,14cyclictest9743-21memory08:00:170
28997997651,15cyclictest6620-21/usr/sbin/munin12:00:180
28997997651,14cyclictest31033-21seq11:28:380
28997997650,15cyclictest30831-21/usr/sbin/munin09:20:300
28997997649,15cyclictest3842-21seq11:49:340
28997997640,24cyclictest4330-21sshd11:50:250
161882760,3sleep016185-21cat12:35:270
28997997552,13cyclictest31985-21ntp_states07:20:210
28997997551,14cyclictest8157-21ntp_kernel_err12:05:170
28997997549,14cyclictest14647-21ntp_states12:30:220
28997997548,17cyclictest26399-21df_inode09:05:130
28997997540,21cyclictest1465-21/usr/sbin/munin11:40:310
28997997538,23cyclictest336-21/usr/sbin/munin09:30:200
2795827521,32sleep027984-21memory07:05:180
28997997449,15cyclictest26305-21irqstats11:10:170
28997997449,15cyclictest17712-21chrt10:35:290
28997997447,18cyclictest4694-21sshd07:40:240
28997997447,16cyclictest3220-21ntp_states09:40:220
28997997445,19cyclictest27912-21/usr/sbin/munin11:15:270
28997997442,18cyclictest32611-21/usr/sbin/munin11:35:100
28997997350,13cyclictest22804-21ps08:50:250
28997997349,15cyclictest20042-21/usr/sbin/munin10:45:240
28997997349,14cyclictest6114-21runrttasks09:50:310
28997997349,14cyclictest25164-21ntp_states11:05:220
28997997348,14cyclictest12117-21wc10:15:170
28997997347,15cyclictest22180-21cat10:55:020
28997997347,15cyclictest20307-21readlink08:40:250
28997997344,16cyclictest6841-21seq09:55:130
28997997249,14cyclictest24528-21chrt08:57:010
28997997246,16cyclictest8274-21/usr/sbin/munin10:00:170
28997997245,17cyclictest30785-21find07:15:260
28997997245,14cyclictest11285-21mailstats08:05:250
28997997237,22cyclictest14585-21idleruntime-cro08:20:010
28997997151,12cyclictest2415-21runrttasks07:30:310
28997997148,14cyclictest17896-21seq08:30:290
28997997143,17cyclictest29492-21timerwakeupswit09:15:290
28997997047,14cyclictest8433-21memory07:55:170
28997997041,16cyclictest15201-21seq08:20:260
28997996944,15cyclictest1761-21irqstats09:35:130
28997996845,13cyclictest26302-21grep09:05:020
28997996842,16cyclictest28169-21cat09:10:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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