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2025-05-09 - 05:29

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 Fri May 09, 2025 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
853221370,24sleep00-21swapper/019:05:180
114091690,30ptp4l0-21swapper/119:05:121
114091660,5ptp4l0-21swapper/219:07:472
922926150,7sleep60-21swapper/619:09:266
918926050,6sleep30-21swapper/319:08:593
114091570,6ptp4l0-21swapper/419:07:184
815925430,7sleep50-21swapper/519:05:175
924825242,6sleep70-21swapper/719:09:437
114091380,0ptp4l0-21swapper/522:30:005
114091380,0ptp4l0-21swapper/522:30:005
114091370,1ptp4l28656-21fw_forwarded_lo21:00:155
114091340,0ptp4l0-21swapper/522:47:295
114091340,0ptp4l0-21swapper/521:44:295
114091330,0ptp4l0-21swapper/700:20:277
114091330,0ptp4l0-21swapper/022:16:510
114091320,7ptp4l0-21swapper/221:38:312
114091320,0ptp4l0-21swapper/623:05:166
114091320,0ptp4l0-21swapper/521:35:145
114091320,0ptp4l0-21swapper/520:00:195
114091320,0ptp4l0-21swapper/221:50:222
114091320,0ptp4l0-21swapper/023:44:450
114091310,2ptp4l0-21swapper/221:23:402
114091310,0ptp4l0-21swapper/723:30:417
114091300,0ptp4l0-21swapper/523:17:455
114091300,0ptp4l0-21swapper/522:39:305
114091300,0ptp4l0-21swapper/500:06:475
114091300,0ptp4l0-21swapper/322:27:573
114091300,0ptp4l0-21swapper/322:27:573
114091290,0ptp4l0-21swapper/721:49:537
114091290,0ptp4l0-21swapper/623:53:116
114091290,0ptp4l0-21swapper/500:35:155
114091290,0ptp4l0-21swapper/500:15:195
114091290,0ptp4l0-21swapper/500:10:165
114091290,0ptp4l0-21swapper/423:58:334
114091290,0ptp4l0-21swapper/123:18:191
114091290,0ptp4l0-21swapper/023:54:520
114091290,0ptp4l0-21swapper/021:36:440
114091280,1ptp4l32560-21diskmemload22:40:125
114091280,0ptp4l0-21swapper/622:16:396
114091280,0ptp4l0-21swapper/522:55:095
114091280,0ptp4l0-21swapper/021:18:300
123212270,0sleep60-21swapper/621:25:176
114091270,7ptp4l0-21swapper/519:20:415
114091270,0ptp4l0-21swapper/723:25:357
114091270,0ptp4l0-21swapper/523:53:455
114091270,0ptp4l0-21swapper/522:05:185
114091270,0ptp4l0-21swapper/520:45:175
114091270,0ptp4l0-21swapper/520:20:125
114091270,0ptp4l0-21swapper/500:22:095
114091270,0ptp4l0-21swapper/222:45:442
114091270,0ptp4l0-21swapper/200:37:152
114091270,0ptp4l0-21swapper/121:13:421
114091260,3ptp4l561ktimersoftd/521:34:145
114091260,2ptp4l0-21swapper/522:02:005
114091260,0ptp4l0-21swapper/721:53:557
114091260,0ptp4l0-21swapper/623:56:556
114091260,0ptp4l0-21swapper/523:49:355
114091260,0ptp4l0-21swapper/523:36:435
114091260,0ptp4l0-21swapper/500:04:055
114091260,0ptp4l0-21swapper/321:50:003
114091260,0ptp4l0-21swapper/223:46:262
114091260,0ptp4l0-21swapper/100:21:571
114091250,1ptp4l20893-21irqstats00:30:165
114091250,1ptp4l19932-21users23:00:205
114091250,0ptp4l0-21swapper/623:45:206
114091250,0ptp4l0-21swapper/621:18:146
114091250,0ptp4l0-21swapper/600:36:546
114091250,0ptp4l0-21swapper/522:13:525
114091250,0ptp4l0-21swapper/520:15:365
114091250,0ptp4l0-21swapper/520:05:135
114091250,0ptp4l0-21swapper/519:27:315
114091250,0ptp4l0-21swapper/500:28:175
114091250,0ptp4l0-21swapper/319:45:133
114091250,0ptp4l0-21swapper/123:55:001
114091250,0ptp4l0-21swapper/021:04:590
114091250,0ptp4l0-21swapper/000:35:420
114091240,3ptp4l321ktimersoftd/221:29:582
114091240,2ptp4l0-21swapper/520:13:555
114091240,2ptp4l0-21swapper/519:34:595
114091240,1ptp4l5776-21smartctl20:10:143
114091240,1ptp4l359-21ssh21:51:301
114091240,1ptp4l29427-21/usr/sbin/munin22:30:191
114091240,1ptp4l24573-21sh21:40:191
114091240,1ptp4l2404-21users20:00:201
114091240,1ptp4l16984-21latency_hist22:15:000
114091240,1ptp4l14659-21date19:20:005
114091240,0ptp4l0-21swapper/719:45:177
114091240,0ptp4l0-21swapper/622:59:516
114091240,0ptp4l0-21swapper/621:30:166
114091240,0ptp4l0-21swapper/620:05:166
114091240,0ptp4l0-21swapper/600:25:136
114091240,0ptp4l0-21swapper/600:24:516
114091240,0ptp4l0-21swapper/600:12:536
114091240,0ptp4l0-21swapper/523:34:275
114091240,0ptp4l0-21swapper/523:22:515
114091240,0ptp4l0-21swapper/522:50:175
114091240,0ptp4l0-21swapper/522:20:125
114091240,0ptp4l0-21swapper/522:20:125
114091240,0ptp4l0-21swapper/522:18:005
114091240,0ptp4l0-21swapper/521:07:485
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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