You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-07 - 20:22

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 #8

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 100 highest latencies:
System rackcslot8s.osadl.org (updated Tue Apr 07, 2026 12:46:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2250321100,0sleep10-21swapper/109:50:191
212912600,0sleep30-21swapper/312:05:193
111391600,5ptp4l0-21swapper/007:07:520
111391580,4ptp4l0-21swapper/407:07:144
55425634,7sleep30-21swapper/307:09:153
111391560,4ptp4l0-21swapper/207:05:482
3114525442,7sleep70-21swapper/707:05:017
111391530,5ptp4l0-21swapper/607:05:196
3270825038,7sleep10-21swapper/107:05:361
40524636,6sleep50-21swapper/507:07:335
111391340,0ptp4l0-21swapper/509:25:195
111391330,4ptp4l0-21swapper/708:55:157
111391330,3ptp4l0-21swapper/510:23:575
111391330,0ptp4l0-21swapper/612:03:196
111391320,4ptp4l24088-21diskmemload09:58:427
111391320,1ptp4l8313-21latency_hist08:35:015
111391320,0ptp4l0-21swapper/709:18:297
111391310,0ptp4l0-21swapper/711:36:147
111391310,0ptp4l0-21swapper/512:02:245
111391310,0ptp4l0-21swapper/508:40:195
111391310,0ptp4l0-21swapper/308:05:143
111391310,0ptp4l0-21swapper/009:40:150
111391300,0ptp4l0-21swapper/510:38:195
111391300,0ptp4l0-21swapper/510:38:195
111391300,0ptp4l0-21swapper/510:33:555
111391300,0ptp4l0-21swapper/510:33:555
111391300,0ptp4l0-21swapper/510:12:455
111391300,0ptp4l0-21swapper/009:36:110
111391290,2ptp4l0-21swapper/710:21:317
111391290,0ptp4l0-21swapper/309:59:003
111391290,0ptp4l0-21swapper/010:11:560
111391290,0ptp4l0-21swapper/010:05:510
97299280,26cyclictest0-21swapper/508:49:385
111391280,2ptp4l0-21swapper/012:35:130
111391280,0ptp4l0-21swapper/609:13:416
111391280,0ptp4l0-21swapper/512:22:335
111391280,0ptp4l0-21swapper/511:06:285
111391280,0ptp4l0-21swapper/012:26:590
111391280,0ptp4l0-21swapper/011:40:220
111391280,0ptp4l0-21swapper/011:25:250
111391280,0ptp4l0-21swapper/010:57:380
111391270,0ptp4l0-21swapper/710:02:387
111391270,0ptp4l0-21swapper/510:57:575
111391270,0ptp4l0-21swapper/510:47:525
111391270,0ptp4l0-21swapper/311:48:073
111391270,0ptp4l0-21swapper/311:24:593
111391270,0ptp4l0-21swapper/310:07:503
111391270,0ptp4l0-21swapper/011:52:450
972992624,1cyclictest0-21swapper/508:15:355
111391260,0ptp4l0-21swapper/711:43:307
111391260,0ptp4l0-21swapper/710:31:067
111391260,0ptp4l0-21swapper/710:31:067
111391260,0ptp4l0-21swapper/511:37:095
111391260,0ptp4l0-21swapper/510:50:135
111391260,0ptp4l0-21swapper/510:43:085
111391260,0ptp4l0-21swapper/310:15:193
111391260,0ptp4l0-21swapper/110:52:291
111391260,0ptp4l0-21swapper/110:33:561
111391260,0ptp4l0-21swapper/110:33:561
111391260,0ptp4l0-21swapper/012:32:060
111391260,0ptp4l0-21swapper/011:30:340
111391260,0ptp4l0-21swapper/009:19:220
111391250,1ptp4l20383-21df_inode07:50:117
111391250,1ptp4l20383-21df_inode07:50:117
111391250,1ptp4l1963-21df_inode12:25:121
111391250,1ptp4l0-21swapper/711:49:077
111391250,0ptp4l1461-21ssh09:21:283
111391250,0ptp4l0-21swapper/711:54:427
111391250,0ptp4l0-21swapper/707:15:157
111391250,0ptp4l0-21swapper/608:28:176
111391250,0ptp4l0-21swapper/512:29:425
111391250,0ptp4l0-21swapper/512:10:565
111391250,0ptp4l0-21swapper/511:11:425
111391250,0ptp4l0-21swapper/509:51:545
111391250,0ptp4l0-21swapper/509:02:385
111391250,0ptp4l0-21swapper/507:26:085
111391250,0ptp4l0-21swapper/410:20:154
111391250,0ptp4l0-21swapper/309:36:383
111391250,0ptp4l0-21swapper/309:12:123
111391250,0ptp4l0-21swapper/307:50:133
111391250,0ptp4l0-21swapper/307:50:133
111391250,0ptp4l0-21swapper/111:59:271
111391250,0ptp4l0-21swapper/111:45:201
111391250,0ptp4l0-21swapper/109:49:101
111391250,0ptp4l0-21swapper/109:42:251
111391250,0ptp4l0-21swapper/012:20:370
111391250,0ptp4l0-21swapper/012:10:000
111391250,0ptp4l0-21swapper/012:02:200
111391250,0ptp4l0-21swapper/010:30:170
111391250,0ptp4l0-21swapper/010:30:170
111391240,3ptp4l0-21swapper/707:33:327
111391240,1ptp4l8031-21sh12:34:061
111391240,1ptp4l6670-21fw_conntrack10:15:137
111391240,1ptp4l3799-21memory09:25:160
111391240,1ptp4l31323-21cat10:05:004
111391240,1ptp4l20208-21df12:05:121
111391240,1ptp4l13498-21irqrtprio08:45:167
111391240,1ptp4l13363-21kernelversion11:55:167
111391240,1ptp4l1-21systemd09:30:000
111391240,0ptp4l0-21swapper/712:15:217
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional