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2026-05-27 - 14:29

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6s.osadl.org (updated Wed May 27, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24812114103,6sleep30-21swapper/307:06:553
2621211190,16sleep00-21swapper/007:08:390
2588211099,6sleep10-21swapper/107:08:161
2544210991,12sleep20-21swapper/207:07:412
67952810,0sleep00-21swapper/010:03:330
208532760,0sleep00-21swapper/009:10:380
101342600,5sleep1275299cyclictest09:33:351
2752993918,19cyclictest13735-21ssh12:25:111
275499271,2cyclictest0-21swapper/311:50:113
275499260,10cyclictest0-21swapper/310:20:113
164962230,0sleep00-21swapper/009:40:120
275499221,3cyclictest13736-21runrttasks12:25:113
275299220,3cyclictest0-21swapper/109:50:151
275499210,19cyclictest0-21swapper/307:55:153
275299210,3cyclictest8258-21iostat11:45:141
275299210,3cyclictest0-21swapper/109:12:201
275299210,2cyclictest0-21swapper/111:16:461
275299210,2cyclictest0-21swapper/110:30:111
275299210,2cyclictest0-21swapper/110:07:161
275299210,19cyclictest0-21swapper/109:36:021
275299210,12cyclictest0-21swapper/112:12:421
275299200,3cyclictest5539-21ssh11:42:181
275299200,3cyclictest14471-21sensors10:10:581
275299200,3cyclictest13614-21ssh11:50:341
275299200,3cyclictest0-21swapper/112:37:381
275299200,3cyclictest0-21swapper/111:39:541
275299200,3cyclictest0-21swapper/111:25:541
275299200,3cyclictest0-21swapper/107:15:421
275299200,2cyclictest0-21swapper/112:33:581
275299200,2cyclictest0-21swapper/112:24:461
275299200,2cyclictest0-21swapper/111:22:071
275299200,2cyclictest0-21swapper/111:08:201
275299200,2cyclictest0-21swapper/110:18:151
275299200,2cyclictest0-21swapper/109:00:521
275299200,2cyclictest0-21swapper/107:40:121
275299200,18cyclictest0-21swapper/109:58:591
2751992017,2cyclictest14923-21kworker/u8:009:46:040
27672190,0sleep00-21swapper/012:13:400
2752991913,5cyclictest0-21swapper/110:20:161
275299190,3cyclictest28391-21pzem_current10:25:181
275299190,3cyclictest27004-21ssh09:17:061
275299190,3cyclictest17337-21ssh10:47:381
275299190,3cyclictest0-21swapper/110:56:181
275299190,3cyclictest0-21swapper/109:25:591
275299190,2cyclictest21567-21aten2.4-expect07:55:141
275299190,2cyclictest0-21swapper/112:15:141
275299190,2cyclictest0-21swapper/111:55:221
275299190,2cyclictest0-21swapper/111:30:111
275299190,2cyclictest0-21swapper/111:01:411
275299190,2cyclictest0-21swapper/110:44:431
275299190,2cyclictest0-21swapper/110:37:161
275299190,2cyclictest0-21swapper/109:47:481
275299190,2cyclictest0-21swapper/109:23:311
275299190,2cyclictest0-21swapper/108:40:101
275299190,2cyclictest0-21swapper/108:25:141
275299190,2cyclictest0-21swapper/107:20:111
275299190,12cyclictest0-21swapper/112:01:171
275499181,2cyclictest0-21swapper/309:05:103
275299180,2cyclictest17446-21apt-get09:05:101
275299180,2cyclictest0-21swapper/112:08:301
275299180,2cyclictest0-21swapper/111:10:031
275299180,2cyclictest0-21swapper/110:50:181
275299180,2cyclictest0-21swapper/110:00:261
275299180,2cyclictest0-21swapper/109:40:141
275299180,2cyclictest0-21swapper/108:55:181
275299180,2cyclictest0-21swapper/108:20:101
275299180,2cyclictest0-21swapper/108:15:141
275299180,2cyclictest0-21swapper/108:10:151
275299180,2cyclictest0-21swapper/108:00:141
275299180,2cyclictest0-21swapper/107:45:111
275299180,2cyclictest0-21swapper/107:34:461
2751991815,2cyclictest30240-21kworker/u8:010:28:040
275199181,15cyclictest0-21swapper/011:23:480
275299170,2cyclictest0-21swapper/108:50:101
275299170,2cyclictest0-21swapper/108:05:101
275299170,2cyclictest0-21swapper/107:50:341
275299170,2cyclictest0-21swapper/107:35:141
275299170,2cyclictest0-21swapper/107:27:301
275299170,2cyclictest0-21swapper/107:10:101
275199171,14cyclictest1237-21ssh10:30:580
275399160,14cyclictest29984-21grep08:15:132
275299160,2cyclictest0-21swapper/108:45:021
275299160,2cyclictest0-21swapper/108:35:431
275299160,2cyclictest0-21swapper/108:31:141
275199161,3cyclictest14728-21runrttasks12:25:180
275199161,12cyclictest0-21swapper/011:45:130
275499151,3cyclictest5212-21cat08:35:003
275499151,12cyclictest0-21swapper/310:15:593
2754991510,3cyclictest25499-21apt-get09:50:053
275499150,13cyclictest5198-21ssh09:28:233
275499150,13cyclictest3063-21diskstats11:40:123
2753991512,2cyclictest0-21swapper/209:00:132
2753991512,2cyclictest0-21swapper/208:30:132
275199151,3cyclictest0-21swapper/011:59:350
2751991512,2cyclictest29113-21kworker/u8:209:54:050
2751991512,2cyclictest19519-21kworker/u8:111:37:040
2751991512,2cyclictest13910-21kworker/u8:011:43:040
275199151,12cyclictest0-21swapper/009:32:550
2751991510,3cyclictest0-21swapper/011:10:390
275199150,3cyclictest0-21swapper/010:45:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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