You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-09-17 - 04:01

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 Wed Sep 17, 2025 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
478322920,2sleep04781-21ls19:10:290
2309122420,2sleep023093-21grep00:35:230
106221300,3chrt1063-21missed_timers23:10:230
2415121260,2sleep024154-21latency_hist22:35:010
1052621230,2sleep010527-21cut21:40:020
2963212018,81sleep02970-21sh19:05:130
2838121030,4sleep028385-21open_files22:50:250
123512960,4sleep012419-21sed23:55:010
234872930,4sleep023501-21idleruntime-cro20:24:590
181422906,67sleep018211-21/usr/sbin/munin00:15:290
162172840,4sleep016229-21sh00:10:000
25282830,3sleep02531-21fgrep23:15:250
110922830,3sleep011091-21timerandwakeup21:40:300
129412820,4sleep013003-21grep23:55:270
187332816,62sleep018744-21ntp_states20:05:260
290752800,2sleep029073-21ntp_states20:45:210
4052770,3sleep0459-21/usr/sbin/munin21:00:220
144772764,61sleep014482-21df_inode21:55:130
219372740,3sleep021940-21fgrep00:30:260
4121996640,15cyclictest5135-21/usr/sbin/munin23:25:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional