You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-08-12 - 19:44

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  

x86 Intel Core i7-4960X @3600 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of shadow in rack #0, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 20 highest latencies:
System rack0slot4s.osadl.org (updated Fri Aug 12, 2022 00:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39719472404386,11sleep20-21swapper/219:08:348
39719132386379,4sleep90-21swapper/919:08:0915
39719862371352,11sleep40-21swapper/419:09:0810
39720342367329,12sleep110-21swapper/1119:09:483
39717262362345,10sleep150-21swapper/1519:06:077
39719292361340,14sleep70-21swapper/719:08:2313
39720502358340,11sleep60-21swapper/619:09:5812
39716972354334,12sleep50-21swapper/519:05:4011
39719962349328,13sleep130-21swapper/1319:09:175
39717652349330,12sleep80-21swapper/819:06:3214
39717432348328,12sleep140-21swapper/1419:06:226
39719942347328,12sleep120-21swapper/1219:09:164
39717862347327,12sleep100-21swapper/1019:06:502
39716952347328,12sleep30-21swapper/319:05:389
39720432346326,12sleep10-21swapper/119:09:541
39717762346327,12sleep00-21swapper/019:06:400
3972479998928,20cyclictest0-21swapper/722:35:0413
3972479998928,20cyclictest0-21swapper/722:32:0913
3972479998928,20cyclictest0-21swapper/721:22:0813
3972479998927,20cyclictest3985915-21kworker/7:020:51:3713
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional