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2026-05-11 - 06:21

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 Mon May 11, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12766211492,15sleep20-21swapper/219:06:022
13109211186,19sleep00-21swapper/019:06:240
2918021090,1sleep121-21rcuc/100:39:511
13284210998,6sleep10-21swapper/119:08:371
13336210897,6sleep30-21swapper/319:09:193
277642740,0sleep1221ktimersoftd/123:26:561
50252730,0sleep0101ktimersoftd/023:02:410
286622710,1sleep30-21swapper/322:53:393
169292680,0sleep30-21swapper/322:40:153
189632670,0sleep00-21swapper/021:32:430
1342199350,18cyclictest0-21swapper/200:15:122
135612260,0sleep00-21swapper/000:21:300
48002250,0sleep10-21swapper/121:17:131
243922230,1sleep20-21swapper/222:49:132
1342199231,3cyclictest0-21swapper/219:20:102
1342099221,19cyclictest29847-21ssh21:45:111
1342199210,19cyclictest0-21swapper/222:25:122
1341999210,2cyclictest0-21swapper/020:50:110
47542200,0sleep10-21swapper/100:12:131
1342299200,8cyclictest11430-21aten2.4_r3power23:45:133
1342299200,18cyclictest27226-21ssh00:36:253
1342299200,18cyclictest0-21swapper/300:10:003
1342199200,18cyclictest0-21swapper/220:05:122
1341999200,2cyclictest0-21swapper/020:00:120
227182190,1sleep3381ktimersoftd/323:21:163
1342299190,18cyclictest0-21swapper/321:21:023
1342299190,17cyclictest0-21swapper/322:39:173
1342299190,17cyclictest0-21swapper/321:10:373
1342299190,17cyclictest0-21swapper/300:15:123
1342299180,6cyclictest0-21swapper/300:21:173
1342299180,17cyclictest0-21swapper/321:40:133
1342299180,16cyclictest29500-21diskmemload22:05:423
1342299180,16cyclictest0-21swapper/323:18:083
1342299180,16cyclictest0-21swapper/323:10:163
1342299180,16cyclictest0-21swapper/322:19:403
1342299180,16cyclictest0-21swapper/321:32:513
1342299180,16cyclictest0-21swapper/300:04:393
1341999180,17cyclictest0-21swapper/023:55:110
1342299170,7cyclictest0-21swapper/321:53:513
1342299170,5cyclictest0-21swapper/300:30:473
1342299170,16cyclictest0-21swapper/323:07:483
1342299170,16cyclictest0-21swapper/322:46:273
1342299170,15cyclictest4602-21ssh23:01:593
1342299170,15cyclictest0-21swapper/323:58:373
1342299170,15cyclictest0-21swapper/323:41:493
1342299170,15cyclictest0-21swapper/323:33:073
1342299170,15cyclictest0-21swapper/321:26:493
13420991712,3cyclictest29395-21apt-get22:20:081
13420991712,3cyclictest0-21swapper/123:50:181
1341999170,2cyclictest0-21swapper/020:30:110
1342299169,6cyclictest0-21swapper/323:27:463
1342299169,6cyclictest0-21swapper/321:55:333
1342299166,8cyclictest2695-21grep23:35:163
1342299160,15cyclictest0-21swapper/322:25:303
1342299160,15cyclictest0-21swapper/321:15:273
1342299160,15cyclictest0-21swapper/320:16:033
1342299160,15cyclictest0-21swapper/319:22:273
1342299160,14cyclictest0-21swapper/322:34:203
1342299160,14cyclictest0-21swapper/321:45:533
1342299160,14cyclictest0-21swapper/300:08:573
1342199161,3cyclictest16603-21ssh22:40:132
1342099161,13cyclictest7339-21munin-run20:15:011
1342099160,13cyclictest0-21swapper/120:45:001
1341999161,3cyclictest6389-21seq21:54:550
1342299158,6cyclictest0-21swapper/323:50:063
1342299155,8cyclictest3649-21snmpd22:11:253
1342299150,5cyclictest0-21swapper/322:23:123
1342299150,14cyclictest0-21swapper/322:00:583
1342199151,12cyclictest3127-21nscd22:06:222
1342199151,12cyclictest27105-21ssh22:16:132
1342199150,3cyclictest0-21swapper/221:39:552
1342199150,13cyclictest29500-21diskmemload21:55:002
1342199150,13cyclictest0-21swapper/223:30:192
1342099153,10cyclictest30993-21cut00:05:291
1342099152,7cyclictest0-21swapper/119:10:001
1342099152,7cyclictest0-21swapper/119:10:001
1342099151,12cyclictest14274-21iostat20:30:151
1342099150,3cyclictest21567-21cat19:29:591
1342099150,3cyclictest0-21swapper/123:20:011
1341999151,3cyclictest3649-21snmpd21:11:150
13419991511,2cyclictest0-21swapper/023:33:420
1341999150,13cyclictest0-21swapper/022:49:280
1341999150,13cyclictest0-21swapper/000:31:030
1342299144,8cyclictest3127-21nscd21:10:003
1342299144,8cyclictest2850-21rsyslogd20:45:003
1342299144,8cyclictest26071-21df_abs21:00:133
1342299144,8cyclictest16990-21timerwakeupswit19:16:023
1342299144,8cyclictest13377-21cron20:30:003
1342299143,9cyclictest2593-21cat20:01:033
13422991410,2cyclictest0-21swapper/320:50:163
13422991410,2cyclictest0-21swapper/320:30:123
1342299140,13cyclictest0-21swapper/322:56:383
1342299140,12cyclictest2211050ssh21:36:013
1342299140,12cyclictest0-21swapper/300:25:143
1342199142,7cyclictest10914-21copy22:00:002
13421991411,2cyclictest0-21swapper/220:00:182
1342199141,11cyclictest29500-21diskmemload23:10:052
1342199141,11cyclictest20466-21apt-get22:10:112
1342199140,3cyclictest6498-21ssh21:19:592
1342199140,2cyclictest0-21swapper/222:00:052
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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