You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2025-12-14 - 00:12

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 Sat Dec 13, 2025 12:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111391680,5ptp4l0-21swapper/407:05:154
111391680,28ptp4l0-21swapper/107:05:101
111391610,30ptp4l0-21swapper/207:09:572
111391610,29ptp4l0-21swapper/007:05:130
111391560,4ptp4l0-21swapper/507:07:295
249592540,0sleep60-21swapper/611:15:176
747425241,6sleep70-21swapper/707:06:107
752824938,6sleep60-21swapper/607:06:506
770724635,7sleep30-21swapper/307:09:103
111391350,0ptp4l0-21swapper/012:25:130
111391300,0ptp4l13425-21latency10:50:160
111391290,0ptp4l0-21swapper/407:20:214
111391280,3ptp4l0-21swapper/510:00:155
111391280,0ptp4l0-21swapper/412:15:124
111391280,0ptp4l0-21swapper/110:05:201
111391280,0ptp4l0-21swapper/011:58:450
111391270,0ptp4l0-21swapper/410:50:004
111391260,0ptp4l0-21swapper/409:39:214
111391260,0ptp4l0-21swapper/012:20:190
111391260,0ptp4l0-21swapper/009:45:130
111391260,0ptp4l0-21swapper/008:55:190
111391250,0ptp4l0-21swapper/711:05:167
111391250,0ptp4l0-21swapper/510:10:135
111391250,0ptp4l0-21swapper/410:05:184
111391250,0ptp4l0-21swapper/407:58:034
111391250,0ptp4l0-21swapper/407:40:134
111391250,0ptp4l0-21swapper/012:10:160
111391250,0ptp4l0-21swapper/012:01:010
111391250,0ptp4l0-21swapper/009:50:200
111391250,0ptp4l0-21swapper/009:20:130
111391240,1ptp4l6109-21fw_forwarded_lo10:35:144
111391240,1ptp4l24240-21idleruntime12:25:154
111391240,1ptp4l23132-21processes10:00:251
111391240,1ptp4l2210-21latency09:15:164
111391240,1ptp4l20371-21hostname08:45:151
111391240,0ptp4l0-21swapper/511:40:175
111391240,0ptp4l0-21swapper/510:40:215
111391240,0ptp4l0-21swapper/508:10:015
111391240,0ptp4l0-21swapper/411:30:004
111391240,0ptp4l0-21swapper/409:05:154
111391240,0ptp4l0-21swapper/408:30:214
111391240,0ptp4l0-21swapper/110:55:181
111391240,0ptp4l0-21swapper/109:00:121
111391240,0ptp4l0-21swapper/108:35:171
111391240,0ptp4l0-21swapper/012:15:120
111391240,0ptp4l0-21swapper/011:10:120
111391240,0ptp4l0-21swapper/009:10:280
111391240,0ptp4l0-21swapper/007:20:190
111391230,1ptp4l8172-21fw_forwarded_lo11:50:121
111391230,1ptp4l29404-21if_err_eno110:15:154
111391230,1ptp4l25799-21/usr/sbin/munin07:45:170
111391230,1ptp4l25799-21/usr/sbin/munin07:45:170
111391230,1ptp4l25447-21irqrtprio07:45:164
111391230,1ptp4l25447-21irqrtprio07:45:154
111391230,1ptp4l20946-21timerwakeupswit11:05:203
111391230,1ptp4l20171-21cut07:35:000
111391230,1ptp4l16912-21munin-run11:00:014
111391230,0ptp4l10129-21users08:20:200
111391230,0ptp4l0-21swapper/512:35:125
111391230,0ptp4l0-21swapper/512:00:115
111391230,0ptp4l0-21swapper/511:55:175
111391230,0ptp4l0-21swapper/511:50:175
111391230,0ptp4l0-21swapper/511:35:155
111391230,0ptp4l0-21swapper/511:15:205
111391230,0ptp4l0-21swapper/509:40:395
111391230,0ptp4l0-21swapper/509:25:015
111391230,0ptp4l0-21swapper/509:00:125
111391230,0ptp4l0-21swapper/508:35:125
111391230,0ptp4l0-21swapper/508:10:115
111391230,0ptp4l0-21swapper/411:20:124
111391230,0ptp4l0-21swapper/410:10:154
111391230,0ptp4l0-21swapper/409:50:224
111391230,0ptp4l0-21swapper/409:20:134
111391230,0ptp4l0-21swapper/409:10:304
111391230,0ptp4l0-21swapper/408:55:194
111391230,0ptp4l0-21swapper/408:40:314
111391230,0ptp4l0-21swapper/408:25:184
111391230,0ptp4l0-21swapper/408:20:154
111391230,0ptp4l0-21swapper/408:18:284
111391230,0ptp4l0-21swapper/312:05:143
111391230,0ptp4l0-21swapper/307:25:213
111391230,0ptp4l0-21swapper/208:15:132
111391230,0ptp4l0-21swapper/208:00:182
111391230,0ptp4l0-21swapper/207:10:122
111391230,0ptp4l0-21swapper/110:30:201
111391230,0ptp4l0-21swapper/109:40:351
111391230,0ptp4l0-21swapper/108:50:141
111391230,0ptp4l0-21swapper/108:00:011
111391230,0ptp4l0-21swapper/011:45:190
111391230,0ptp4l0-21swapper/010:45:130
111391230,0ptp4l0-21swapper/010:30:190
111391230,0ptp4l0-21swapper/010:15:130
111391230,0ptp4l0-21swapper/009:30:120
111391230,0ptp4l0-21swapper/009:30:000
111391230,0ptp4l0-21swapper/009:15:140
111391230,0ptp4l0-21swapper/008:15:180
111391230,0ptp4l0-21swapper/007:45:000
111391230,0ptp4l0-21swapper/007:15:090
111391220,3ptp4l0-21swapper/510:50:265
111391220,0ptp4l0-21swapper/712:25:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional