You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-08-30 - 01:03

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 #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.

Total number of samples: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack4slot6s.osadl.org (updated Fri Aug 29, 2025 12:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1505121310,3sleep015050-21netstat07:30:200
1500221310,2sleep015001-21/usr/sbin/munin11:40:270
1335921300,4chrt13361-21wc09:30:020
1217221290,4chrt12173-21latency_hist07:20:010
95529911810,92cyclictest13764-21threads11:35:290
95529911710,92cyclictest23979-21processes12:15:250
9552991139,91cyclictest16445-21systemctl09:40:300
95529911328,74cyclictest31591-21latency_hist08:35:010
9552991119,88cyclictest27479-21/usr/sbin/munin12:30:250
9552991108,88cyclictest4538-21/usr/sbin/munin11:00:250
95529911032,66cyclictest3102-21/usr/sbin/munin08:50:150
9552991099,85cyclictest8504-21ntp_states09:10:210
9552991099,85cyclictest5762-21if_eth009:00:170
9552991098,88cyclictest9149-21chrt11:19:210
9552991098,85cyclictest2087-21/usr/sbin/munin10:50:300
95529910912,85cyclictest22642-21df08:00:130
9552991089,86cyclictest27629-21munin-run08:20:010
9552991089,85cyclictest269-21runrttasks07:11:090
9552991088,87cyclictest23491-21cat12:15:010
9552991088,87cyclictest20591-21users07:50:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional