You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-19 - 00:00

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 #3

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 rack0slot3s.osadl.org (updated Mon May 18, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21016682274252,6sleep00-21swapper/019:08:250
21015842263239,16sleep30-21swapper/319:07:163
21017032259219,31sleep70-21swapper/719:08:567
21017622258216,32sleep60-21swapper/619:09:446
21015942256216,17sleep40-21swapper/419:07:254
21015602256210,36sleep10-21swapper/119:06:571
21015922253212,32sleep20-21swapper/219:07:232
21016552243220,15sleep50-21swapper/519:08:155
22333742850,0sleep32233371-21ntpq23:05:203
2102082993632,3cyclictest2230300-21cat23:00:172
210206999341,32cyclictest151ktimers/023:31:520
210206999341,32cyclictest151ktimers/023:31:520
210209699290,28cyclictest0-21swapper/520:15:125
210206999290,25cyclictest21765792sleep021:22:290
210210099280,24cyclictest0-21swapper/600:15:136
210210099270,1cyclictest0-21swapper/620:16:156
210209699270,25cyclictest0-21swapper/522:35:135
210208799270,25cyclictest0-21swapper/319:23:493
210208299270,25cyclictest0-21swapper/200:22:102
210206999270,22cyclictest0-21swapper/000:31:520
210210599260,22cyclictest0-21swapper/719:36:567
2102100992620,4cyclictest0-21swapper/600:03:166
2102096992622,3cyclictest2178151-21cat21:25:155
210209699260,22cyclictest0-21swapper/523:51:455
2102091992622,3cyclictest1391-21snmpd22:59:384
210209199260,24cyclictest0-21swapper/421:59:244
210209199260,22cyclictest0-21swapper/422:09:224
2102087992625,1cyclictest0-21swapper/320:16:593
210208799260,24cyclictest0-21swapper/322:48:443
210208299269,16cyclictest2252277-21cat23:40:142
2102074992625,1cyclictest0-21swapper/100:03:161
210206999260,22cyclictest0-21swapper/022:59:500
2102105992518,5cyclictest0-21swapper/722:01:087
2102100992518,5cyclictest0-21swapper/621:20:356
210210099250,23cyclictest0-21swapper/619:17:046
2102096992521,3cyclictest1391-21snmpd21:40:205
2102096992518,3cyclictest0-21swapper/523:22:125
210209699250,23cyclictest0-21swapper/520:52:525
2102091992522,3cyclictest1391-21snmpd22:28:314
2102091992522,2cyclictest1391-21snmpd22:19:004
2102091992521,3cyclictest1391-21snmpd23:35:124
2102091992521,3cyclictest1391-21snmpd23:26:124
2102091992521,3cyclictest1391-21snmpd23:26:124
2102091992518,5cyclictest0-21swapper/419:33:004
2102087992518,5cyclictest0-21swapper/322:13:193
2102087992518,5cyclictest0-21swapper/319:45:423
2102087992518,3cyclictest0-21swapper/322:58:503
210208799250,1cyclictest0-21swapper/322:31:313
2102082992521,3cyclictest2235811-21cat23:10:172
2102082992521,3cyclictest1391-21snmpd23:46:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional