You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-07-12 - 09:47

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 #c, 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 rackcslot7s.osadl.org (updated Sun Jul 12, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246888021440,3sleep33056-21PK-Backend22:00:003
243421621180,3sleep13056-21PK-Backend20:20:131
240828527940,13sleep10-21swapper/119:06:261
240712227948,21sleep00-21swapper/019:05:140
139099780,62rtkit-daemon0-21swapper/219:05:112
240823227638,14sleep30-21swapper/319:05:453
24654362520,4sleep30-21swapper/321:50:013
25102692460,4sleep13056-21PK-Backend23:55:221
24903752270,3chrt3056-21PK-Backend23:00:113
240872699262,8cyclictest2465692-21apt21:50:113
25065892250,6sleep00-21swapper/023:45:190
25091622240,3sleep00-21swapper/023:55:010
240872699241,21cyclictest2515435-21/usr/sbin/munin00:10:183
2408726992410,12cyclictest1095-21runrttasks23:50:123
24348962230,4sleep20-21swapper/220:20:212
2408726992320,2cyclictest3056-21PK-Backend22:59:343
2408726992315,6cyclictest2445789-21apt-get20:55:003
240871899230,21cyclictest3056-21PK-Backend21:53:531
139099230,16rtkit-daemon3056-21PK-Backend20:33:583
139099230,15rtkit-daemon0-21swapper/300:22:353
2408726992220,1cyclictest3056-21PK-Backend23:06:233
2408726992220,1cyclictest3056-21PK-Backend23:06:233
2408726992219,2cyclictest3056-21PK-Backend23:30:093
2408726992219,2cyclictest3056-21PK-Backend23:15:573
2408726992219,2cyclictest0-21swapper/322:30:213
2408726992214,6cyclictest2520128-21grep00:25:123
2408722992220,1cyclictest0-21swapper/223:45:122
2408722992220,1cyclictest0-21swapper/223:17:132
2408722992220,1cyclictest0-21swapper/222:16:032
2408722992220,1cyclictest0-21swapper/222:14:072
2408722992220,1cyclictest0-21swapper/221:45:352
2408722992220,1cyclictest0-21swapper/220:59:102
2408722992220,1cyclictest0-21swapper/219:40:432
2408722992220,1cyclictest0-21swapper/200:39:062
2408722992217,3cyclictest2486486-21taskset22:49:562
2408722992214,6cyclictest2468498-21users21:55:252
240872299220,3cyclictest2513421-21df00:05:122
240872299220,2cyclictest2509313-21apt23:55:132
240872299220,21cyclictest0-21swapper/221:03:372
2408718992220,1cyclictest3056-21PK-Backend20:55:181
2408718992220,1cyclictest0-21swapper/100:28:241
2408718992219,2cyclictest3056-21PK-Backend23:48:291
2408718992213,7cyclictest883-21dbus-daemon23:35:011
2408716992215,5cyclictest2156-21gnome-shell22:02:090
240871699220,20cyclictest0-21swapper/019:50:170
139099220,15rtkit-daemon3056-21PK-Backend23:14:593
139099220,15rtkit-daemon3056-21PK-Backend22:00:173
139099220,15rtkit-daemon0-21swapper/220:26:412
139099220,14rtkit-daemon0-21swapper/322:44:253
139099220,14rtkit-daemon0-21swapper/220:47:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional