You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-07-12 - 11:08

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 #3, 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 
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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot6s.osadl.org (updated Sat Jul 12, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
51772124114,6sleep30-21swapper/319:08:353
52672114103,6sleep00-21swapper/019:09:440
5078210888,15sleep20-21swapper/219:07:262
5253210685,16sleep10-21swapper/119:09:331
105212860,0sleep30-21swapper/322:04:213
300582740,0sleep30-21swapper/321:18:073
128702710,0sleep00-21swapper/022:39:530
285482680,0sleep20-21swapper/221:15:502
141022670,0sleep30-21swapper/323:13:353
144822600,1sleep20-21swapper/223:45:522
5317993717,18cyclictest0-21swapper/219:30:122
136792320,0sleep20-21swapper/200:19:002
531899300,12cyclictest0-21swapper/300:10:133
253222290,1sleep20-21swapper/223:57:272
55942240,0sleep30-21swapper/322:31:223
81412230,1sleep1221ktimersoftd/123:06:561
531799220,20cyclictest0-21swapper/220:00:132
193992220,0sleep00-21swapper/023:50:520
5317992117,2cyclictest0-21swapper/219:10:112
531599211,2cyclictest0-21swapper/020:30:110
531599210,19cyclictest0-21swapper/020:00:130
531899200,18cyclictest0-21swapper/321:35:143
531699200,2cyclictest0-21swapper/100:10:131
531699190,17cyclictest19690-21interrupts21:40:161
78702170,1sleep20-21swapper/222:34:422
5317991712,3cyclictest28041-21ssh22:55:122
5317991712,3cyclictest25970-21ssh22:20:122
276232170,0sleep00-21swapper/022:54:560
531799160,14cyclictest0-21swapper/200:00:132
531699161,13cyclictest12775-21grep22:05:261
531699160,14cyclictest0-21swapper/122:24:571
531899151,2cyclictest21522-21diskmemload00:05:253
531899151,12cyclictest9538-21cut22:35:233
5318991510,3cyclictest12042-21runrttasks23:44:393
5317991510,3cyclictest30299-21hostname23:30:132
531799150,13cyclictest21522-21diskmemload22:29:232
531799150,13cyclictest0-21swapper/221:28:552
5316991510,3cyclictest27457-21kworker/u8:222:13:041
531599153,9cyclictest8903-21ssh23:40:220
531599151,3cyclictest0-21swapper/022:09:270
5315991512,2cyclictest9129-21kworker/u8:019:22:040
531599151,12cyclictest7646-21apt-get19:15:130
531899149,3cyclictest28895-21sh21:50:163
531899142,7cyclictest17860-21ssh22:45:003
531899140,12cyclictest7732-21ssh23:06:193
531799149,3cyclictest15416-21aten2.4-expect23:15:132
531799141,2cyclictest5273-21apt-get20:30:062
5317991411,2cyclictest0-21swapper/200:37:122
5317991411,2cyclictest0-21swapper/200:09:232
531799141,11cyclictest26878-21ssh23:25:352
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional