You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-06 - 19:29

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #0, slot #4

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack0slot4s.osadl.org (updated Mon Apr 06, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38096312386366,13sleep140-21swapper/1419:08:316
38095822384348,30sleep100-21swapper/1019:07:542
38093982368348,13sleep130-21swapper/1319:05:325
38094722365358,5sleep20-21swapper/219:06:268
38095382364325,13sleep80-21swapper/819:07:2014
38096872362355,5sleep110-21swapper/1119:09:163
38096042361343,12sleep90-21swapper/919:08:0915
38097322356347,6sleep150-21swapper/1519:09:527
38096342353334,13sleep00-21swapper/019:08:320
38095192353332,13sleep60-21swapper/619:07:0212
38095592352340,8sleep50-21swapper/519:07:3311
38096382351331,13sleep30-21swapper/319:08:369
38095902349329,13sleep10-21swapper/119:08:011
38097212347329,12sleep40-21swapper/419:09:4110
38097112347328,12sleep120-21swapper/1219:09:334
38096832347324,14sleep70-21swapper/719:09:1113
3810197994040,0cyclictest4064986-21kworker/0:2-events23:18:170
3810197994040,0cyclictest0-21swapper/022:35:500
3810205993837,1cyclictest3979395-21ntpq22:00:238
3810205993837,1cyclictest3979395-21ntpq22:00:238
3810205993837,1cyclictest3929897-21kworker/u32:3+events_unbound22:22:098
3810197993838,0cyclictest0-21swapper/023:23:460
381021699370,1cyclictest0-21swapper/620:40:1812
3810205993635,1cyclictest3873467-21kworker/u32:5+flush-259:021:19:538
3810205993633,3cyclictest3967497-21kworker/u32:4+events_unbound22:15:038
381024299349,0cyclictest0-21swapper/1422:52:066
3810237993434,0cyclictest0-21swapper/1321:35:535
3810205993432,2cyclictest0-21swapper/222:10:478
381020599340,32cyclictest0-21swapper/200:22:038
3810197993434,0cyclictest0-21swapper/021:09:050
381022899330,30cyclictest0-21swapper/1020:20:142
3810205993331,0cyclictest0-21swapper/223:23:518
3810205993330,3cyclictest43-21ksoftirqd/221:35:538
3810197993333,0cyclictest0-21swapper/020:33:190
3810197993333,0cyclictest0-21swapper/020:19:470
3810243993231,1cyclictest1581rcuc/1521:35:537
381022699320,29cyclictest0-21swapper/921:35:1515
3810216993229,3cyclictest3913952-21mii-tool21:10:1512
3810216993229,3cyclictest1774-21snmpd22:12:3912
3810205993232,0cyclictest0-21swapper/221:20:138
3810205993230,2cyclictest0-21swapper/223:40:158
3810205993230,2cyclictest0-21swapper/223:35:298
3810205993229,3cyclictest0-21swapper/200:06:408
381020599320,29cyclictest0-21swapper/200:03:298
3810200993231,1cyclictest4067666-21kworker/u32:3+flush-259:023:20:151
3810197993232,0cyclictest0-21swapper/019:45:390
381019799322,30cyclictest0-21swapper/000:35:050
381024399310,30cyclictest0-21swapper/1520:37:217
3810242993129,1cyclictest1774-21snmpd00:20:376
381024299310,30cyclictest0-21swapper/1419:30:146
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional