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2026-07-09 - 04:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Thu Jul 09, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81316621170,3sleep10-21swapper/100:30:231
74678721070,4sleep1746782-21cron21:25:001
70912921070,4sleep00-21swapper/019:35:150
69792121000,4sleep20-21swapper/219:05:182
139099770,62rtkit-daemon0-21swapper/319:05:223
69831227642,27sleep10-21swapper/119:05:261
69866726241,13sleep00-21swapper/019:07:090
7888312590,2sleep00-21swapper/023:25:010
7001092430,3sleep00-21swapper/019:10:210
7025412400,3sleep13056-21PK-Backend19:15:241
69904599319,21cyclictest795911-21cron23:45:001
69904599319,21cyclictest795911-21cron23:45:001
139099300,2rtkit-daemon0-21swapper/021:13:590
699045992717,7cyclictest806589-21cron00:15:001
699045992716,7cyclictest436-20systemd-journal23:35:001
139099260,4rtkit-daemon1389-21rtkit-daemon22:55:021
139099260,4rtkit-daemon1389-21rtkit-daemon21:53:031
699051992516,8cyclictest699964-21ntpq19:10:183
69904799250,23cyclictest1788620-21WebKitWebProces23:44:082
69904799250,23cyclictest1788620-21WebKitWebProces23:44:072
7150732240,3sleep33056-21PK-Backend19:55:003
7150732240,3sleep33056-21PK-Backend19:55:003
69905199245,7cyclictest42-21ksoftirqd/320:28:013
69905199245,7cyclictest42-21ksoftirqd/319:40:433
69905199244,7cyclictest42-21ksoftirqd/323:55:233
699051992421,2cyclictest411rcuc/319:37:203
699051992421,2cyclictest411rcuc/319:18:213
699047992414,8cyclictest789416-21basename23:25:122
7236922230,9sleep013-21ksoftirqd/020:19:550
69905199235,7cyclictest42-21ksoftirqd/319:47:413
699051992320,2cyclictest411rcuc/320:19:443
699051992319,3cyclictest411rcuc/323:50:183
699045992315,6cyclictest762662-21/usr/sbin/munin22:10:001
699045992314,6cyclictest730415-21sshd20:37:151
69904599230,9cyclictest7638952sed22:10:211
699041992315,6cyclictest883-21dbus-daemon00:28:030
69904199230,22cyclictest1389-21rtkit-daemon22:19:080
139099230,15rtkit-daemon0-21swapper/200:20:202
7337252220,4sleep13056-21PK-Backend20:45:221
7337252220,4sleep13056-21PK-Backend20:45:221
7325962220,2sleep30-21swapper/320:45:013
69905199228,5cyclictest42-21ksoftirqd/319:35:013
69905199222,7cyclictest42-21ksoftirqd/319:26:123
699051992220,1cyclictest3056-21PK-Backend23:35:003
699051992220,1cyclictest3056-21PK-Backend22:45:313
699051992220,1cyclictest3056-21PK-Backend22:45:313
699051992220,1cyclictest3056-21PK-Backend22:08:343
699051992219,2cyclictest411rcuc/323:20:083
699051992219,2cyclictest411rcuc/322:15:073
699051992215,5cyclictest797658-21ls23:50:003
69905199220,21cyclictest3056-21PK-Backend22:40:323
699047992220,1cyclictest0-21swapper/223:07:442
699047992220,1cyclictest0-21swapper/221:40:102
69904799220,21cyclictest0-21swapper/223:01:292
69904799220,20cyclictest0-21swapper/220:50:092
699045992220,1cyclictest3056-21PK-Backend20:18:151
699045992215,5cyclictest728907-21sh20:35:011
699045992210,10cyclictest774816-21unin-run22:44:591
69904599220,21cyclictest0-21swapper/121:15:131
699041992214,6cyclictest705277-21df19:25:120
69904199220,21cyclictest0-21swapper/023:41:080
69904199220,21cyclictest0-21swapper/023:41:070
139099220,3rtkit-daemon1389-21rtkit-daemon19:41:311
69905199214,6cyclictest42-21ksoftirqd/321:08:163
69905199214,5cyclictest42-21ksoftirqd/322:35:013
699051992119,1cyclictest3056-21PK-Backend23:42:093
699051992119,1cyclictest3056-21PK-Backend23:42:093
699051992119,1cyclictest3056-21PK-Backend22:12:473
699051992119,1cyclictest3056-21PK-Backend22:04:223
699051992119,1cyclictest3056-21PK-Backend21:16:163
699051992119,1cyclictest3056-21PK-Backend20:00:103
699051992119,1cyclictest0-21swapper/320:14:113
699051992119,1cyclictest0-21swapper/319:55:253
699051992119,1cyclictest0-21swapper/319:21:113
699051992118,2cyclictest411rcuc/322:39:543
699051992117,2cyclictest411rcuc/320:50:593
69905199210,20cyclictest3056-21PK-Backend21:46:043
69905199210,20cyclictest3056-21PK-Backend20:56:483
69905199210,20cyclictest3056-21PK-Backend00:38:543
69905199210,20cyclictest3056-21PK-Backend00:33:053
69904799213,16cyclictest792186-21cron23:35:012
699047992119,1cyclictest0-21swapper/223:57:062
699047992119,1cyclictest0-21swapper/222:43:042
699047992119,1cyclictest0-21swapper/222:35:332
699047992119,1cyclictest0-21swapper/222:13:302
699047992119,1cyclictest0-21swapper/222:00:042
699047992119,1cyclictest0-21swapper/221:27:202
699047992119,1cyclictest0-21swapper/221:17:472
699047992119,1cyclictest0-21swapper/221:00:092
699047992119,1cyclictest0-21swapper/220:42:102
699047992119,1cyclictest0-21swapper/220:16:022
699047992119,1cyclictest0-21swapper/220:13:382
699047992119,1cyclictest0-21swapper/219:32:012
699047992119,1cyclictest0-21swapper/219:13:432
699047992119,1cyclictest0-21swapper/200:17:332
699047992119,1cyclictest0-21swapper/200:02:402
699047992113,6cyclictest883-21dbus-daemon20:58:032
69904799210,20cyclictest0-21swapper/223:18:382
69904799210,20cyclictest0-21swapper/222:25:462
69904799210,20cyclictest0-21swapper/221:57:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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