You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-03-22 - 13:32

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 Sun Mar 22, 2026 00:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1679421690,2sleep016795-21who19:20:290
2419221400,3sleep024255-21wc21:55:270
1509221210,3chrt15090-21proc_pri21:20:250
198821170,4chrt1987-21/usr/sbin/munin22:35:260
2142721150,4chrt21425-21entropy19:40:140
2241121120,2sleep022412-21if_eth023:55:150
3152521080,4sleep031575-21df22:25:120
2672721050,3chrt26728-21timerwakeupswit00:10:290
3271921020,4sleep032766-21irqstats00:35:170
124132980,4sleep012424-21ntp_states21:10:210
18782970,4sleep01924-21if_eth020:30:140
229832920,3sleep023052-21uptime21:50:270
268162906,9sleep026814-21ntp_states20:00:240
200092850,4sleep020014-21/usr/sbin/munin23:45:220
176892850,4sleep017747-21ntp_kernel_pll_19:25:200
55622840,4sleep05608-21wc20:45:010
285572845,8sleep0114-21systemd-journal22:13:060
161442845,8sleep016164-21open_inodes23:30:240
44092835,67sleep04472-21awk22:45:160
255052825,65sleep025534-21awk19:55:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional