You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-29 - 07:44

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 #7, 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.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack7slot7s.osadl.org (updated Wed Apr 29, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2190621300,0sleep00-21swapper/000:05:220
2436929850,37sleep20-21swapper/219:06:352
2466628874,9sleep00-21swapper/019:09:550
2434828568,13sleep10-21swapper/119:06:181
2444828471,9sleep30-21swapper/319:07:043
2476699271,5cyclictest17521-21diskmemload23:25:163
2476699261,2cyclictest0-21swapper/322:48:083
2476699253,2cyclictest17521-21diskmemload00:00:173
2476699251,23cyclictest0-21swapper/321:20:133
2476699250,2cyclictest0-21swapper/323:02:223
24756992421,2cyclictest23562-21python00:25:250
2476699231,2cyclictest0-21swapper/322:52:433
2476699230,2cyclictest0-21swapper/321:18:283
2476699223,1cyclictest27811-21apt-get23:50:133
2476699221,4cyclictest4651-21grep23:35:273
2476699221,4cyclictest17521-21diskmemload00:22:173
2476699220,0cyclictest0-21swapper/320:50:133
24763992219,2cyclictest27807-21memory21:15:212
2476399221,20cyclictest0-21swapper/223:49:552
24756992219,2cyclictest4447-21df_inode23:55:160
2476699215,14cyclictest16798-21apt-get23:05:023
24766992119,1cyclictest27176-21df23:30:153
2476699210,21cyclictest0-21swapper/322:05:143
2476699210,1cyclictest791-21fschecks_count22:55:173
2476699210,16cyclictest0-21swapper/319:40:143
24761992121,0cyclictest0-21swapper/123:52:031
24761992120,1cyclictest0-21swapper/122:10:231
2476199210,21cyclictest0-21swapper/123:36:151
2476199210,20cyclictest17552-21kworker/1:022:55:031
2476199210,19cyclictest0-21swapper/100:19:021
2476699207,7cyclictest16739-21sh21:47:323
2476699204,1cyclictest17521-21diskmemload21:35:133
2476699203,1cyclictest17521-21diskmemload21:54:233
2476699202,3cyclictest0-21swapper/322:00:153
2476699200,4cyclictest0-21swapper/323:23:193
2476699200,14cyclictest28997-21sh00:29:193
2476399200,20cyclictest0-21swapper/223:13:042
2476399200,1cyclictest0-21swapper/200:33:062
24761992020,0cyclictest0-21swapper/100:24:361
24761992018,1cyclictest2167-21munin-run23:35:001
24756992017,2cyclictest22799-21/usr/sbin/munin22:30:160
30442190,0chrt0-21swapper/319:30:163
2476699191,12cyclictest14421-21ssh22:25:123
2476699190,5cyclictest3326-21latency_hist20:40:013
24763991919,0cyclictest0-21swapper/223:56:152
2476399190,19cyclictest0-21swapper/200:02:022
2476399190,18cyclictest0-21swapper/223:26:072
24761991917,1cyclictest28347-21munin-run21:55:001
2476199191,18cyclictest16022-21kworker/1:000:06:131
2476199190,19cyclictest0-21swapper/122:09:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional