You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-05-04 - 23:57

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 #b, 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 - 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.

Note that this system runs a non-RT kernel.
Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot7s.osadl.org (updated Sun May 04, 2025 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
319482324515,3217sleep318341-21kworker/3:009:43:363
2434728838,863sleep224387-21ntpq11:03:282
25223256811,542sleep325262-21ntpq07:38:303
1072240912,383sleep11075-21ntpq09:48:351
25126239653,286sleep225154-21fschecks_count09:23:232
25126239653,286sleep225154-21fschecks_count09:23:232
31750229121,250sleep331874-21/usr/sbin/munin07:58:383
9996224090,105sleep20-21swapper/208:33:352
17514223546,131sleep217658-21latency_hist10:43:052
30111223124,187sleep230202-21xargs07:53:362
14563222649,118sleep20-21swapper/208:48:292
28858222225,158sleep228921-21cpuspeed11:18:192
22222221929,133sleep222266-21latency09:13:252
7710221642,117sleep20-21swapper/211:53:252
7710221642,117sleep20-21swapper/211:53:252
2728022168,46sleep227299-21apt-get11:13:142
20496221616,119sleep220568-21fschecks_time09:08:252
13036221611,35sleep213063-21munin-plugin-st07:03:022
24390221312,75sleep223473-21/usr/sbin/munin09:18:392
24390221312,75sleep223473-21/usr/sbin/munin09:18:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional