You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2024-07-27 - 07:40

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 Sat Jul 27, 2024 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5853210278,1004sleep35897-21ntpq22:16:223
20427296678,805sleep320457-21fschecks_count21:21:213
10866252516,492sleep210870-21df00:16:082
3876247826,435sleep03894-21/usr/sbin/munin22:11:020
14878247811,404sleep315013-21head21:01:463
14878247811,404sleep315013-21head21:01:463
839724090,15sleep112-21rcu_sched00:06:251
22892232241,260sleep00-21swapper/023:11:160
24604231414,287sleep024614-21irqstats23:16:130
20411230923,198sleep320441-21modprobe19:40:533
22564230382,203sleep322689-21latency_hist23:10:553
31770227315,113sleep331809-21fschecks_count21:56:153
8343225077,98sleep38289-21latency_hist22:25:553
2927224362,161sleep33001-21threads22:06:243
29089222736,104sleep329106-21fschecks_count23:31:103
19383220312,178sleep319405-21munin-run23:00:533
8953219985,81sleep38979-21ntp_kernel_pll_22:26:243
1771219829,109sleep313199-1kworker/3:2H23:46:253
261821870,65sleep30-21swapper/320:25:553
25344218177,86sleep30-21swapper/321:36:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional