You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2022-12-04 - 22:09

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 #4, slot #7

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 Celeron N2930 @1833 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #4, slot #7
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 --smi -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 rack4slot7s.osadl.org (updated Sun Dec 04, 2022 12:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207692474408,44sleep00-21swapper/007:07:040
208422459393,52sleep10-21swapper/107:07:521
242032490,1sleep10-21swapper/108:39:451
4592460,2chrt456-21open_inodes10:25:000
4592460,2chrt456-21open_inodes10:25:000
62612410,1chrt2875-21diskmemload09:15:071
2117399353,24cyclictest22004-21apt-get08:34:430
2117399342,24cyclictest12575-21apt-get09:34:420
2117399333,23cyclictest10683-21apt-get09:29:450
2117399331,29cyclictest23720-21aten2_r4power_e07:14:440
2117399322,23cyclictest9321-21apt-get10:49:470
2117399314,22cyclictest0-21swapper/011:09:440
2117399303,22cyclictest0-21swapper/009:09:420
2117399303,20cyclictest16393-21apt-get09:44:430
2117399303,20cyclictest0-21swapper/012:09:420
2117399302,22cyclictest14380-21apt-get08:14:420
2117399293,21cyclictest0-21swapper/007:54:430
2117399292,22cyclictest0-21swapper/011:54:510
2117399292,21cyclictest23925-21apt-get08:39:440
2117399292,20cyclictest18200-21apt-get08:24:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional