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2026-09-16 - 08:37

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Wed Sep 16, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115399260,2cyclictest4903-21ssh22:45:552
1153992523,2cyclictest23410-21ssh00:00:142
115399250,24cyclictest27882-21sh22:37:252
115399250,24cyclictest26814-21diskmemload21:26:352
115399250,24cyclictest0-21swapper/223:53:332
115099250,24cyclictest11600-21apt-get22:52:251
115099250,24cyclictest0-21swapper/121:17:241
114599250,1cyclictest26814-21diskmemload00:02:340
1156992424,0cyclictest0-21swapper/321:36:273
1156992422,1cyclictest0-21swapper/322:52:573
115699240,24cyclictest0-21swapper/323:25:383
115699240,23cyclictest0-21swapper/322:43:003
1153992422,1cyclictest0-21swapper/222:57:582
1153992419,0cyclictest0-21swapper/221:55:562
115399240,24cyclictest31659-21apt-get22:12:232
115399240,23cyclictest26814-21diskmemload23:56:302
115399240,1cyclictest0-21swapper/223:18:052
115399240,1cyclictest0-21swapper/223:09:322
115399240,1cyclictest0-21swapper/200:34:492
115399240,0cyclictest26814-21diskmemload22:33:222
1150992424,0cyclictest0-21swapper/122:22:291
1150992422,1cyclictest313-21systemd-journal21:55:001
1150992422,1cyclictest2199-21forks23:12:261
115099242,21cyclictest13810-21awk23:22:291
115099240,24cyclictest0-21swapper/121:31:301
115099240,23cyclictest15848-21ssh22:55:281
115099240,23cyclictest0-21swapper/122:16:091
115099240,1cyclictest313-21systemd-journal00:20:001
115099240,0cyclictest26814-21diskmemload21:26:051
114599240,24cyclictest0-21swapper/000:21:490
114599240,23cyclictest26814-21diskmemload21:15:590
114599240,1cyclictest594-21ssh21:43:050
1156992323,0cyclictest0-21swapper/323:56:003
1156992323,0cyclictest0-21swapper/323:54:033
1156992323,0cyclictest0-21swapper/323:32:163
1156992323,0cyclictest0-21swapper/322:56:143
1156992323,0cyclictest0-21swapper/300:26:123
1156992323,0cyclictest0-21swapper/300:01:283
1156992321,1cyclictest442-21dump-pmu-power21:15:003
1156992321,1cyclictest0-21swapper/323:38:383
1156992321,1cyclictest0-21swapper/321:31:323
115699230,2cyclictest13832-21sh00:20:593
115699230,23cyclictest0-21swapper/322:30:193
115699230,23cyclictest0-21swapper/322:26:273
115699230,23cyclictest0-21swapper/322:03:123
115699230,23cyclictest0-21swapper/300:13:523
115699230,22cyclictest8769-21apt-get19:27:243
115699230,22cyclictest5176-21sh20:25:003
115699230,22cyclictest30380-21perf20:10:003
115699230,22cyclictest26814-21diskmemload23:05:283
115699230,22cyclictest10195-21cat00:17:273
115699230,22cyclictest0-21swapper/321:42:183
115699230,22cyclictest0-21swapper/321:05:003
115699230,1cyclictest0-21swapper/322:17:463
115699230,0cyclictest0-21swapper/323:21:263
1153992323,0cyclictest0-21swapper/222:52:562
1153992323,0cyclictest0-21swapper/221:43:262
1153992323,0cyclictest0-21swapper/200:16:492
1153992321,1cyclictest23976-21cron00:30:002
1153992321,1cyclictest0-21swapper/222:27:502
1153992321,1cyclictest0-21swapper/221:24:472
115399230,2cyclictest22042-21sh23:00:472
115399230,23cyclictest0-21swapper/223:38:012
115399230,23cyclictest0-21swapper/221:54:032
115399230,22cyclictest5201-21ssh23:14:492
115399230,22cyclictest3501-21sh22:44:062
115399230,22cyclictest0-21swapper/221:31:432
115399230,1cyclictest19554-1kworker/u9:023:27:362
115399230,0cyclictest26814-21diskmemload00:20:062
1150992323,0cyclictest0-21swapper/123:04:351
1150992323,0cyclictest0-21swapper/122:46:571
1150992323,0cyclictest0-21swapper/121:11:031
1150992322,0cyclictest26814-21diskmemload23:25:081
1150992321,1cyclictest2603-21apt-get23:42:251
1150992321,1cyclictest20910-21sh22:31:041
1150992321,1cyclictest13507-21ssh21:55:011
1150992321,1cyclictest0-21swapper/122:10:391
1150992321,1cyclictest0-21swapper/100:00:011
1150992320,2cyclictest1982-21cat22:42:301
115099230,2cyclictest26227-21sh22:07:181
115099230,23cyclictest0-21swapper/121:45:341
115099230,22cyclictest28852-21rm00:05:151
115099230,22cyclictest22776-21sh23:30:431
115099230,22cyclictest15412-21ssh22:26:071
115099230,22cyclictest14825-21awk20:45:011
115099230,1cyclictest27738-21ssh23:06:071
115099230,0cyclictest0-21swapper/100:21:281
115099230,0cyclictest0-21swapper/100:04:171
1145992323,0cyclictest2563-21ssh22:42:540
1145992323,0cyclictest0-21swapper/023:57:190
1145992323,0cyclictest0-21swapper/023:29:560
1145992323,0cyclictest0-21swapper/022:08:110
1145992321,1cyclictest7687-21ssh22:47:320
1145992321,1cyclictest29501-21latency_hist00:35:000
1145992321,1cyclictest20433-21sh22:01:580
1145992321,1cyclictest0-21swapper/021:10:010
1145992320,2cyclictest6681-21rm23:16:310
1145992320,2cyclictest31633-21sh23:38:050
1145992320,2cyclictest11954-21ssh23:21:030
114599230,23cyclictest0-21swapper/023:33:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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