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2026-07-23 - 15:12

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 Thu Jul 23, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1185899260,25cyclictest17355-21dump-pmu-power22:50:010
1185899260,25cyclictest0-21swapper/021:37:520
11866992523,1cyclictest0-21swapper/323:55:473
1186699250,24cyclictest0-21swapper/300:17:533
1186699250,1cyclictest25096-21apt-get21:27:523
11862992521,3cyclictest0-21swapper/222:55:582
11860992523,1cyclictest0-21swapper/122:55:561
1186099250,24cyclictest5884-21diskmemload23:26:341
11858992521,3cyclictest5884-21diskmemload22:59:140
11858992521,3cyclictest0-21swapper/000:39:420
11858992520,4cyclictest0-21swapper/023:08:350
1185899250,24cyclictest27306-21ssh21:28:290
1185899250,24cyclictest0-21swapper/022:31:420
1185899250,24cyclictest0-21swapper/021:42:260
1185899250,24cyclictest0-21swapper/021:32:520
1185899250,24cyclictest0-21swapper/000:13:180
1185899250,21cyclictest20027-21kworker/u8:123:21:240
1185899250,0cyclictest0-21swapper/022:53:080
11866992421,2cyclictest30418-21perf23:30:013
1186699240,23cyclictest5884-21diskmemload23:31:453
11862992423,1cyclictest0-21swapper/221:11:062
11862992422,1cyclictest0-21swapper/223:27:562
11862992421,2cyclictest30196-21/usr/sbin/munin23:58:022
1186299240,24cyclictest0-21swapper/222:52:362
1186299240,23cyclictest9678-21ssh23:11:542
1186299240,23cyclictest5884-21diskmemload21:28:432
1186299240,23cyclictest23916-21latency_hist21:55:012
1186299240,1cyclictest7952-21taskset23:38:202
1186299240,0cyclictest0-21swapper/221:31:112
11860992424,0cyclictest0-21swapper/123:43:021
11860992423,1cyclictest0-21swapper/123:07:091
11860992422,1cyclictest1154-21/usr/sbin/munin00:32:541
1186099240,24cyclictest0-21swapper/123:53:541
1186099240,24cyclictest0-21swapper/122:11:301
1186099240,23cyclictest27911-21ssh23:57:201
1186099240,23cyclictest0-21swapper/121:23:381
1186099240,0cyclictest0-21swapper/122:46:331
11858992424,0cyclictest0-21swapper/021:20:040
11858992422,2cyclictest0-21swapper/023:19:300
11858992421,3cyclictest0-21swapper/022:09:050
11858992421,2cyclictest5884-21diskmemload21:10:010
11858992418,5cyclictest8659-21perf20:10:000
1185899240,23cyclictest5884-21diskmemload00:03:550
1185899240,23cyclictest13484-21grep20:20:010
1185899240,23cyclictest0-21swapper/023:41:570
1185899240,23cyclictest0-21swapper/021:56:040
1185899240,23cyclictest0-21swapper/000:16:150
1185899240,1cyclictest62550irq/127-eno100:31:350
1185899240,0cyclictest0-21swapper/023:00:130
1185899240,0cyclictest0-21swapper/022:41:180
11866992323,0cyclictest0-21swapper/323:43:063
11866992323,0cyclictest0-21swapper/323:16:543
11866992323,0cyclictest0-21swapper/322:39:573
11866992323,0cyclictest0-21swapper/322:17:153
11866992323,0cyclictest0-21swapper/321:17:043
11866992322,1cyclictest0-21swapper/300:11:173
11866992320,2cyclictest8336-21ssh21:41:173
11866992320,2cyclictest7279-21rm23:38:003
11866992320,2cyclictest15576-21cat22:48:013
1186699230,23cyclictest0-21swapper/323:22:433
1186699230,23cyclictest0-21swapper/323:03:553
1186699230,23cyclictest0-21swapper/322:10:383
1186699230,22cyclictest27653-21ssh22:58:093
1186699230,22cyclictest21848-21latency_hist19:30:013
1186699230,22cyclictest21848-21latency_hist19:30:013
1186699230,1cyclictest0-21swapper/322:03:313
1186699230,1cyclictest0-21swapper/300:07:213
1186699230,0cyclictest0-21swapper/323:10:583
1186699230,0cyclictest0-21swapper/321:53:083
1186699230,0cyclictest0-21swapper/321:31:123
11862992323,0cyclictest0-21swapper/222:38:442
11862992323,0cyclictest0-21swapper/222:05:222
11862992323,0cyclictest0-21swapper/222:01:032
11862992323,0cyclictest0-21swapper/221:43:152
11862992323,0cyclictest0-21swapper/221:16:372
11862992321,1cyclictest3485-21cron21:05:012
11862992321,1cyclictest0-21swapper/222:15:142
11862992321,1cyclictest0-21swapper/221:35:332
11862992321,1cyclictest0-21swapper/200:06:542
11862992320,2cyclictest20819-21sh22:21:412
11862992320,2cyclictest13339-21ssh22:46:512
11862992320,2cyclictest0-21swapper/200:11:032
1186299230,23cyclictest15341-21ssh23:16:552
1186299230,22cyclictest8014-21sh22:42:142
1186299230,22cyclictest26742-21ssh22:26:362
1186299230,22cyclictest15191-21ssh23:45:142
1186299230,22cyclictest0-21swapper/222:12:112
1186299230,22cyclictest0-21swapper/220:47:492
1186299230,22cyclictest0-21swapper/200:29:102
1186299230,0cyclictest5884-21diskmemload00:33:462
1186299230,0cyclictest0-21swapper/223:02:462
1186299230,0cyclictest0-21swapper/221:45:492
1186299230,0cyclictest0-21swapper/200:22:072
11860992323,0cyclictest0-21swapper/123:31:071
11860992323,0cyclictest0-21swapper/123:21:001
11860992323,0cyclictest0-21swapper/122:51:291
11860992323,0cyclictest0-21swapper/122:24:061
11860992323,0cyclictest0-21swapper/121:57:461
11860992323,0cyclictest0-21swapper/121:38:091
11860992323,0cyclictest0-21swapper/121:10:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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