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2026-07-27 - 12:30

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 all highest latencies:
System rack4slot6s.osadl.org (updated Mon Jul 27, 2026 00:44:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1815222550,2sleep018154-21if_eth019:25:150
1825222380,3sleep018251-21wc23:35:300
1435721340,3chrt14356-21switchtime23:20:280
2405421250,2sleep024055-21basename00:00:000
2730221230,4chrt27296-21sendmail_mailqu22:05:250
3084221190,3chrt30840-21df22:20:130
2834221190,3sleep028340-21ntp_states00:15:230
2506321170,3chrt25064-21/usr/sbin/munin19:50:280
1165521170,5chrt11656-21ntp_kernel_pll_21:05:200
775021160,3chrt7752-21processes22:55:260
2049621110,2sleep020497-21/usr/sbin/munin21:40:120
1153621060,21sleep011534-21ntpq23:10:190
507121000,4sleep05088-21/usr/sbin/munin20:40:170
299122990,3sleep029914-21ntp_kernel_pll_20:10:220
158842980,4sleep015947-21switchtime19:15:290
168752960,3sleep016914-21proc_pri21:25:250
229032950,4sleep022891-21latency_hist21:50:020
284262925,10sleep028450-21/usr/sbin/munin20:05:160
258152920,3sleep025887-21sendmail_mailqu00:05:270
130382906,10sleep013101-21sendmail_mailst21:10:270
192932895,8sleep019334-21memory21:35:210
243382874,10sleep024379-21memory00:00:200
152942870,3sleep015296-21cron19:15:000
323162800,2sleep032317-21/usr/sbin/munin22:25:200
10792790,2sleep01080-21awk22:30:180
204622684,9sleep020477-21/usr/sbin/munin19:35:010
1293326818,29sleep012989-21/usr/sbin/munin19:05:150
14050996218,14cyclictest946-21ntpd23:40:240
268122610,3sleep026811-21wc22:05:010
14050996134,17cyclictest32567-21/usr/sbin/munin20:20:230
14050996116,16cyclictest68172chrt22:51:250
1405099609,17cyclictest9984-21/usr/sbin/munin23:05:170
1405099609,17cyclictest15156-21/usr/sbin/munin23:25:270
1405099589,17cyclictest7065-21sshd20:47:250
1405099588,16cyclictest8693-21/usr/sbin/munin23:00:150
14050995835,15cyclictest21013-21/usr/sbin/munin19:35:270
14050995834,15cyclictest4076-21/usr/sbin/munin20:35:270
14050995832,15cyclictest22388-21/usr/sbin/munin19:40:270
14050995811,14cyclictest14463-21wc21:15:290
1405099579,17cyclictest30939-21ntp_states00:25:240
1405099579,17cyclictest24299-21/usr/sbin/munin21:55:240
1405099579,16cyclictest10533-21grep21:00:250
1405099577,18cyclictest17857-21/usr/sbin/munin21:30:240
1405099577,15cyclictest2491-21irqstats20:30:150
14050995731,16cyclictest29777-21/usr/sbin/munin00:20:260
14050995731,16cyclictest23449-21/usr/sbin/munin19:45:200
14050995718,14cyclictest1921-21sendmail00:40:010
14050995711,15cyclictest29546-21/usr/sbin/munin22:15:150
1405099569,17cyclictest31071-21/usr/sbin/munin20:15:180
1405099568,17cyclictest16807-21df_inode19:20:110
1405099568,15cyclictest23312-21ntpq21:50:220
1405099568,14cyclictest3533-21/usr/sbin/munin22:40:120
1405099567,16cyclictest21595-21/usr/sbin/munin23:50:160
14050995633,14cyclictest27319-21/usr/sbin/munin20:00:200
14050995630,16cyclictest12727-21/usr/sbin/munin23:15:170
1405099559,15cyclictest276-21runrttasks21:20:140
1405099559,14cyclictest25755-21/usr/sbin/munin19:55:130
1405099559,13cyclictest28372-21/usr/sbin/munin22:10:170
1405099558,17cyclictest32221-21ntp_states00:30:220
1405099558,15cyclictest1288-21/usr/sbin/munin20:25:180
1405099558,14cyclictest16488-21df23:30:120
1405099557,16cyclictest2226-21/usr/sbin/munin22:35:220
14050995531,17cyclictest5003-21runrttasks22:45:180
14050995531,16cyclictest9051-21/usr/sbin/munin20:55:200
14050995531,15cyclictest20593-21/usr/sbin/munin23:45:200
14050995510,15cyclictest26908-21irqstats00:10:190
1405099537,13cyclictest7698-21memory20:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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