You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-15 - 13:01

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 Wed Jul 15, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5368502259217,32sleep40-21swapper/418:35:174
5368672258212,37sleep70-21swapper/718:35:307
5369012256231,16sleep30-21swapper/318:35:513
5368042256216,31sleep00-21swapper/018:34:470
5369932255230,16sleep20-21swapper/218:37:102
5367552254229,16sleep50-21swapper/518:34:155
5369412252213,16sleep10-21swapper/118:36:251
5367682244219,16sleep60-21swapper/618:34:266
537363993718,4cyclictest0-21swapper/300:39:193
537354993328,3cyclictest0-21swapper/119:38:251
537372993228,3cyclictest649417-21cat22:17:215
53736799320,1cyclictest0-21swapper/421:27:594
53736799320,1cyclictest0-21swapper/421:27:584
537363993225,5cyclictest680360-21/usr/sbin/munin23:17:503
537363993123,7cyclictest617574-21taskset21:14:173
537363992922,5cyclictest528-21systemd-journal23:39:063
537363992921,6cyclictest331290-21kworker/3:1+mm_percpu_wq18:54:333
537376992827,1cyclictest0-21swapper/621:05:396
537363992821,5cyclictest701710-21awk00:01:293
537363992821,5cyclictest331290-21kworker/3:1+mm_percpu_wq21:50:113
53736799270,1cyclictest0-21swapper/422:33:424
53736399272,24cyclictest528-21systemd-journal19:11:013
537363992718,8cyclictest331290-21kworker/3:1+mm_percpu_wq19:49:363
53738099260,24cyclictest0-21swapper/723:37:447
53736799260,24cyclictest0-21swapper/421:19:124
537363992622,3cyclictest1390-21snmpd22:26:193
537363992619,5cyclictest657347-21fschecks_count22:33:473
537363992617,5cyclictest528-21systemd-journal20:23:303
53736399260,24cyclictest0-21swapper/323:26:453
53736399260,24cyclictest0-21swapper/319:17:133
53736399260,22cyclictest0-21swapper/321:47:303
537358992622,3cyclictest1390-21snmpd19:13:512
53735899261,23cyclictest0-21swapper/220:16:542
53735499260,25cyclictest0-21swapper/120:33:281
53735499260,22cyclictest0-21swapper/122:39:121
537349992622,3cyclictest1390-21snmpd23:14:080
537349992622,3cyclictest1390-21snmpd23:03:220
537380992521,3cyclictest1390-21snmpd18:46:427
537380992521,3cyclictest1390-21snmpd18:46:427
537380992518,5cyclictest0-21swapper/722:08:307
537376992518,5cyclictest0-21swapper/618:43:386
537376992518,5cyclictest0-21swapper/618:43:386
537372992521,3cyclictest1390-21snmpd21:46:535
537372992518,5cyclictest0-21swapper/518:53:315
537367992521,3cyclictest1390-21snmpd20:30:004
537367992521,3cyclictest1390-21snmpd20:26:434
537367992518,3cyclictest0-21swapper/423:44:094
53736799250,23cyclictest0-21swapper/419:03:564
537363992521,3cyclictest1390-21snmpd23:49:103
537363992521,3cyclictest1390-21snmpd21:27:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional