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2025-11-29 - 22:18

OSADL QA Farm on Real-time of Mainline Linux

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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 
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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 Nov 29, 2025 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
746426442,7sleep70-21swapper/707:07:297
114091640,30ptp4l0-21swapper/007:09:490
114091630,32ptp4l0-21swapper/107:06:061
114091630,14ptp4l0-21swapper/407:08:494
114091600,29ptp4l0-21swapper/207:05:022
114091590,2ptp4l0-21swapper/607:05:176
753325846,7sleep30-21swapper/307:08:213
36642570,0sleep10-21swapper/112:09:051
731625432,7sleep50-21swapper/507:05:355
179702430,0sleep60-21swapper/611:44:116
114091350,0ptp4l0-21swapper/509:55:065
114091340,0ptp4l0-21swapper/511:25:145
114091320,0ptp4l0-21swapper/511:47:115
114091320,0ptp4l0-21swapper/411:55:174
114091320,0ptp4l0-21swapper/010:57:230
114091310,0ptp4l0-21swapper/512:10:575
114091310,0ptp4l0-21swapper/511:34:495
114091310,0ptp4l0-21swapper/510:48:515
114091310,0ptp4l0-21swapper/508:45:135
114091310,0ptp4l0-21swapper/507:10:185
114091310,0ptp4l0-21swapper/210:40:212
114091300,2ptp4l0-21swapper/507:25:205
114091300,0ptp4l0-21swapper/512:18:025
114091300,0ptp4l0-21swapper/511:23:545
114091300,0ptp4l0-21swapper/510:25:425
114091300,0ptp4l0-21swapper/510:20:185
114091300,0ptp4l0-21swapper/510:11:475
114091300,0ptp4l0-21swapper/509:42:315
114091300,0ptp4l0-21swapper/110:19:261
114091300,0ptp4l0-21swapper/010:41:470
114091300,0ptp4l0-21swapper/007:45:000
114091290,1ptp4l7044-21ssh10:02:025
114091290,0ptp4l0-21swapper/512:31:095
114091290,0ptp4l0-21swapper/510:36:045
114091290,0ptp4l0-21swapper/509:05:235
114091290,0ptp4l0-21swapper/312:01:483
114091290,0ptp4l0-21swapper/309:37:153
114091290,0ptp4l0-21swapper/011:13:050
114091290,0ptp4l0-21swapper/009:49:120
114091280,0ptp4l0-21swapper/612:38:236
114091280,0ptp4l0-21swapper/610:38:216
114091280,0ptp4l0-21swapper/509:54:255
114091280,0ptp4l0-21swapper/111:07:591
114091280,0ptp4l0-21swapper/110:28:311
114091270,0ptp4l31138-21diskmemload11:44:364
114091270,0ptp4l0-21swapper/510:18:315
114091270,0ptp4l0-21swapper/211:23:102
114091270,0ptp4l0-21swapper/110:24:421
114091270,0ptp4l0-21swapper/109:40:051
114091270,0ptp4l0-21swapper/011:17:580
114091260,6ptp4l0-21swapper/510:33:055
114091260,0ptp4l31138-21diskmemload10:59:401
114091260,0ptp4l29289-21latency_hist09:50:005
114091260,0ptp4l0-21swapper/611:47:486
114091260,0ptp4l0-21swapper/510:55:145
114091260,0ptp4l0-21swapper/410:32:454
114091260,0ptp4l0-21swapper/211:53:522
114091260,0ptp4l0-21swapper/211:13:492
114091250,2ptp4l0-21swapper/511:44:185
114091250,1ptp4l17768-21diskstats11:00:130
114091250,1ptp4l11536-21irqstats09:25:154
114091250,0ptp4l0-21swapper/712:02:157
114091250,0ptp4l0-21swapper/709:37:187
114091250,0ptp4l0-21swapper/708:40:007
114091250,0ptp4l0-21swapper/610:30:126
114091250,0ptp4l0-21swapper/512:05:135
114091250,0ptp4l0-21swapper/511:51:005
114091250,0ptp4l0-21swapper/511:12:325
114091250,0ptp4l0-21swapper/509:32:485
114091250,0ptp4l0-21swapper/509:14:515
114091250,0ptp4l0-21swapper/411:24:334
114091250,0ptp4l0-21swapper/410:42:194
114091250,0ptp4l0-21swapper/211:44:592
114091250,0ptp4l0-21swapper/209:11:072
114091250,0ptp4l0-21swapper/208:55:192
114091250,0ptp4l0-21swapper/112:16:001
114091250,0ptp4l0-21swapper/111:49:401
114091250,0ptp4l0-21swapper/111:37:111
114091250,0ptp4l0-21swapper/109:30:131
114091250,0ptp4l0-21swapper/107:10:191
114091250,0ptp4l0-21swapper/009:55:170
114091250,0ptp4l0-21swapper/009:25:140
114091250,0ptp4l0-21swapper/008:50:210
114091240,1ptp4l811-21NetworkManager07:25:001
114091240,1ptp4l31138-21diskmemload10:11:531
114091240,1ptp4l29715-21phc2sys11:15:185
114091240,1ptp4l2621-21expr10:40:126
114091240,1ptp4l19866-21smart_sda11:45:222
114091240,1ptp4l12853-21ps10:10:160
114091240,1ptp4l11308-21/usr/sbin/munin07:15:132
114091240,1ptp4l0-21swapper/512:00:175
114091240,0ptp4l0-21swapper/612:28:296
114091240,0ptp4l0-21swapper/612:24:196
114091240,0ptp4l0-21swapper/611:54:536
114091240,0ptp4l0-21swapper/609:10:376
114091240,0ptp4l0-21swapper/608:15:216
114091240,0ptp4l0-21swapper/608:15:206
114091240,0ptp4l0-21swapper/511:38:315
114091240,0ptp4l0-21swapper/511:04:315
114091240,0ptp4l0-21swapper/509:27:385
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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