You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-02 - 09:13

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 Tue Dec 02, 2025 00:46:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10688812403382,14sleep40-21swapper/419:08:1310
10689352369347,14sleep50-21swapper/519:09:0311
10688772364356,5sleep00-21swapper/019:08:090
10687802359339,13sleep70-21swapper/719:06:5513
10689192354312,14sleep60-21swapper/619:08:4712
10687092352311,14sleep130-21swapper/1319:05:575
10686732352341,7sleep20-21swapper/219:05:298
10687052349328,13sleep90-21swapper/919:05:5315
10688642348335,8sleep100-21swapper/1019:08:022
10688802347326,14sleep30-21swapper/319:08:129
10690022345325,13sleep110-21swapper/1119:09:563
10688742345324,14sleep140-21swapper/1419:08:076
10688722345323,14sleep120-21swapper/1219:08:044
10655602345322,14sleep150-21swapper/1519:05:107
10687042344324,13sleep80-21swapper/819:05:5214
10688782339320,13sleep10-21swapper/119:08:111
106941299426,11cyclictest0-21swapper/522:37:3611
106941299415,11cyclictest0-21swapper/523:43:3011
106941299415,11cyclictest0-21swapper/523:32:3111
106941299415,11cyclictest0-21swapper/522:59:3411
106941299415,11cyclictest0-21swapper/521:09:4411
106941299404,11cyclictest0-21swapper/522:48:3511
106941299404,11cyclictest0-21swapper/522:04:3911
106941299404,11cyclictest0-21swapper/521:20:4311
1069412994038,2cyclictest1020718-21kworker/u32:3+flush-259:019:20:1811
1069412994038,2cyclictest1020718-21kworker/u32:3+flush-259:019:20:1811
1069437993939,0cyclictest0-21swapper/1323:35:185
1069437993535,0cyclictest0-21swapper/1323:18:375
106941299340,9cyclictest0-21swapper/523:21:3211
106941299340,9cyclictest0-21swapper/522:26:3811
106941299340,9cyclictest0-21swapper/522:26:3811
106941299340,9cyclictest0-21swapper/520:36:4711
106941299339,11cyclictest0-21swapper/519:52:5111
106941299335,4cyclictest0-21swapper/500:38:2611
106939699330,30cyclictest0-21swapper/021:30:140
1069445993228,4cyclictest1213969-21mii-tool22:00:157
1069437993225,3cyclictest0-21swapper/1320:45:015
1069435993231,1cyclictest0-21swapper/1222:35:184
106943599320,29cyclictest0-21swapper/1220:40:204
106944599310,30cyclictest0-21swapper/1523:22:507
106944099310,30cyclictest0-21swapper/1422:47:316
106944099310,30cyclictest0-21swapper/1421:37:506
106943599310,28cyclictest0-21swapper/1219:30:164
106943199310,30cyclictest0-21swapper/1123:00:293
106943199310,30cyclictest0-21swapper/1120:27:333
106943199310,30cyclictest0-21swapper/1100:05:423
1069425993130,1cyclictest2395797-21snmpd23:25:4015
106942199310,30cyclictest0-21swapper/823:40:0514
106942199310,30cyclictest0-21swapper/823:33:0614
106942199310,30cyclictest0-21swapper/823:05:5314
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional