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2025-06-28 - 23:21

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 28, 2025 12:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2777921490,2sleep027780-21egrep11:00:170
966121300,3chrt9662-21missed_timers11:55:190
971521200,4chrt9717-21sort07:45:000
1224321200,2sleep012246-21wc10:00:160
6849911181,19cyclictest17480-21ntpq12:25:250
6849910980,16cyclictest20563-21find08:25:290
179821090,4sleep01732-21/usr/sbin/munin11:25:190
6849910878,16cyclictest23792-21seq08:39:260
6849910779,15cyclictest7901-21seq09:42:210
6849910680,13cyclictest3054-21/usr/sbin/munin11:30:130
6849910677,16cyclictest6478-21sshd09:36:240
6849910672,21cyclictest686-21latency_hist07:10:010
6849910578,15cyclictest29381-21runrttasks09:00:210
6849910577,16cyclictest8402-21munin-run07:40:020
6849910577,16cyclictest3266-21sendmail-msp07:20:010
6849910577,16cyclictest13615-21ntp_states12:10:240
6849910576,15cyclictest31986-21ps11:15:330
6849910576,15cyclictest27880-21/usr/sbin/munin08:55:300
6849910573,17cyclictest7475-21users11:45:310
6849910558,21cyclictest6940-21sshd07:33:420
6849910479,15cyclictest10231-21find07:45:300
6849910479,14cyclictest20948-21munin-run12:40:010
6849910478,16cyclictest21023-21chrt10:34:130
6849910474,17cyclictest4918-21ntpq07:25:220
6849910378,15cyclictest4577-21ntp_states11:35:240
6849910378,14cyclictest922-21interrupts07:10:210
6849910377,15cyclictest31074-21users09:05:340
6849910376,15cyclictest732-21/usr/sbin/munin11:20:240
6849910376,15cyclictest31772-21/usr/sbin/munin09:10:340
6849910376,15cyclictest15478-21chrt12:17:370
6849910375,16cyclictest17287-21sendmail-msp10:20:000
6849910374,17cyclictest8911-21runrttasks11:51:410
6849910276,15cyclictest14846-21cpu10:10:120
6849910267,20cyclictest23850-21/usr/sbin/munin10:45:330
6849910175,15cyclictest22738-21cat10:40:210
6849910175,14cyclictest17617-21sh08:15:170
6849910174,15cyclictest12005-21chrt07:52:570
6849910173,17cyclictest25434-21ntp_states10:50:290
6849910171,18cyclictest19363-21chrt12:32:400
1640121010,2sleep016463-21timerandwakeup12:20:300
1125121010,3sleep011318-21sendmail_mailqu09:55:280
6849910075,15cyclictest25610-21ntp_states08:45:260
6849910075,14cyclictest14465-21seq10:08:210
6849910073,15cyclictest5658-21latency_hist09:35:010
6849910073,15cyclictest3408-21sed09:25:210
6849910071,18cyclictest31155-21seq11:12:360
6849910071,17cyclictest16178-21wc08:10:010
6849910071,15cyclictest19472-21seq08:20:340
6849910067,21cyclictest21260-21/usr/sbin/munin10:35:230
684999974,15cyclictest9926-21ntp_states09:50:240
684999973,15cyclictest3983-21users07:20:330
684999973,15cyclictest27066-21grep08:50:290
684999972,15cyclictest17157-21runrttasks08:12:500
684999968,16cyclictest6231-21sshd11:40:430
684999963,21cyclictest12640-21awk07:55:200
684999875,14cyclictest845-21awk09:15:210
684999873,14cyclictest22619-21cut08:35:010
684999866,20cyclictest11052-21ntp_states12:00:260
684999864,19cyclictest17601-21memory10:20:230
684999772,14cyclictest12112-21df_inode12:05:170
684999769,16cyclictest14094-21ps08:00:290
684999765,20cyclictest29213-21memory11:05:250
684999765,20cyclictest1916-21/usr/sbin/munin09:20:280
684999762,22cyclictest26416-21/usr/sbin/munin10:55:310
684999673,14cyclictest25192-21munin-run08:45:010
684999462,19cyclictest18695-21/usr/sbin/munin10:25:200
684999461,18cyclictest8415-21df_inode09:45:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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