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2025-07-08 - 13:22

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 Tue Jul 08, 2025 00:46:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
109012690,0sleep60-21swapper/623:45:126
109012690,0sleep60-21swapper/623:45:116
84582620,0sleep20-21swapper/221:28:262
317526252,6sleep60-21swapper/619:09:266
114091620,5ptp4l0-21swapper/119:07:071
114091610,5ptp4l0-21swapper/519:09:015
114091610,5ptp4l0-21swapper/019:05:020
45252570,0sleep70-21swapper/723:35:207
203032570,0sleep30-21swapper/321:45:003
302125545,6sleep70-21swapper/719:07:277
114091550,5ptp4l0-21swapper/419:09:594
53722520,0sleep10-21swapper/121:24:551
292225140,6sleep30-21swapper/319:06:113
289525039,7sleep20-21swapper/219:05:532
114091320,0ptp4l0-21swapper/722:08:347
114091320,0ptp4l0-21swapper/423:35:144
114091310,0ptp4l0-21swapper/423:15:214
114091310,0ptp4l0-21swapper/422:14:024
114091310,0ptp4l0-21swapper/400:11:084
114091310,0ptp4l0-21swapper/122:35:221
114091310,0ptp4l0-21swapper/100:10:221
114091310,0ptp4l0-21swapper/021:58:200
114091310,0ptp4l0-21swapper/000:35:270
114091300,0ptp4l0-21swapper/122:25:221
114091300,0ptp4l0-21swapper/120:35:151
114091300,0ptp4l0-21swapper/100:39:021
114091290,2ptp4l0-21swapper/122:04:481
114091290,0ptp4l0-21swapper/723:42:127
114091290,0ptp4l0-21swapper/621:18:466
114091290,0ptp4l0-21swapper/519:49:595
114091290,0ptp4l0-21swapper/500:18:225
114091290,0ptp4l0-21swapper/123:05:291
114091290,0ptp4l0-21swapper/122:46:421
114091280,2ptp4l0-21swapper/121:15:151
114091280,0ptp4l0-21swapper/622:49:066
114091280,0ptp4l0-21swapper/500:20:235
114091280,0ptp4l0-21swapper/223:21:302
114091280,0ptp4l0-21swapper/223:01:442
114091280,0ptp4l0-21swapper/121:39:311
114091280,0ptp4l0-21swapper/023:31:150
114091280,0ptp4l0-21swapper/022:55:220
114091280,0ptp4l0-21swapper/020:40:140
114091270,2ptp4l0-21swapper/422:58:104
114091270,0ptp4l0-21swapper/721:23:207
114091270,0ptp4l0-21swapper/623:28:366
114091270,0ptp4l0-21swapper/622:39:276
114091270,0ptp4l0-21swapper/422:50:564
114091270,0ptp4l0-21swapper/422:30:134
114091270,0ptp4l0-21swapper/421:28:504
114091270,0ptp4l0-21swapper/400:20:014
114091270,0ptp4l0-21swapper/123:28:071
114091270,0ptp4l0-21swapper/023:15:560
114091270,0ptp4l0-21swapper/023:05:170
114091270,0ptp4l0-21swapper/000:12:110
114091260,0ptp4l26596-21diskmemload23:51:431
114091260,0ptp4l0-21swapper/622:52:586
114091260,0ptp4l0-21swapper/600:32:306
114091260,0ptp4l0-21swapper/523:08:265
114091260,0ptp4l0-21swapper/522:30:405
114091260,0ptp4l0-21swapper/422:45:154
114091260,0ptp4l0-21swapper/421:36:384
114091260,0ptp4l0-21swapper/420:10:154
114091260,0ptp4l0-21swapper/400:37:474
114091260,0ptp4l0-21swapper/323:04:283
114091260,0ptp4l0-21swapper/200:21:072
114091260,0ptp4l0-21swapper/121:33:381
114091260,0ptp4l0-21swapper/100:02:141
114091260,0ptp4l0-21swapper/020:57:280
114091260,0ptp4l0-21swapper/019:35:110
114091250,1ptp4l3768-21/usr/sbin/munin19:10:110
114091250,1ptp4l28677-21grep20:00:220
114091250,0ptp4l0-21swapper/723:24:047
114091250,0ptp4l0-21swapper/623:30:166
114091250,0ptp4l0-21swapper/621:35:196
114091250,0ptp4l0-21swapper/621:34:406
114091250,0ptp4l0-21swapper/522:27:055
114091250,0ptp4l0-21swapper/522:20:135
114091250,0ptp4l0-21swapper/521:20:115
114091250,0ptp4l0-21swapper/423:56:274
114091250,0ptp4l0-21swapper/423:42:464
114091250,0ptp4l0-21swapper/422:20:054
114091250,0ptp4l0-21swapper/221:14:372
114091250,0ptp4l0-21swapper/221:14:362
114091250,0ptp4l0-21swapper/221:00:172
114091250,0ptp4l0-21swapper/123:33:221
114091250,0ptp4l0-21swapper/123:24:521
114091250,0ptp4l0-21swapper/122:13:041
114091250,0ptp4l0-21swapper/121:50:211
114091250,0ptp4l0-21swapper/100:23:041
114091250,0ptp4l0-21swapper/023:58:260
114091250,0ptp4l0-21swapper/023:50:540
114091250,0ptp4l0-21swapper/023:11:420
114091250,0ptp4l0-21swapper/022:44:310
114091250,0ptp4l0-21swapper/022:24:590
114091240,2ptp4l0-21swapper/400:07:544
114091240,1ptp4l7272-21fw_conntrack00:25:151
114091240,1ptp4l65-21ksoftirqd/623:02:236
114091240,1ptp4l4694-21/usr/sbin/munin20:20:161
114091240,1ptp4l3715-21cat20:20:005
114091240,1ptp4l28506-21/usr/sbin/munin22:40:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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