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2025-11-22 - 14:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Sat Nov 22, 2025 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17467849912320,1228cyclictest18184642sleep320:05:013
17467849911600,1156cyclictest17867812sleep319:40:013
17467849911401,1133cyclictest1932373-21sleep21:30:013
17467849911200,1116cyclictest17530032sleep319:14:573
1746784992700,267cyclictest2232392-21turbostat00:39:553
17865502710,3sleep21223-21cron19:40:002
1746784991916,1cyclictest0-21swapper/300:05:143
1746784991815,1cyclictest0-21swapper/323:45:013
1746784991815,1cyclictest0-21swapper/319:40:003
1746784991815,1cyclictest0-21swapper/300:15:133
174678499176,7cyclictest1817969-21turbostat20:05:003
1746784991714,1cyclictest0-21swapper/321:20:013
174678499171,12cyclictest1767978-21taskset19:25:153
19571622161,11sleep30-21swapper/321:45:103
174678499166,8cyclictest2086484-21turbostat23:09:553
174678499165,8cyclictest1908183-21taskset21:15:013
19757892150,7sleep21977766-21tr21:55:202
174678499156,6cyclictest20372782sleep322:33:203
174678499154,8cyclictest1849615-21turbostat20:30:003
174678499154,8cyclictest1849615-21turbostat20:30:003
1746784991513,1cyclictest0-21swapper/321:30:193
1746784991513,0cyclictest0-21swapper/322:52:173
1746784991513,0cyclictest0-21swapper/322:20:163
1746784991513,0cyclictest0-21swapper/300:25:153
1746784991512,1cyclictest0-21swapper/323:50:213
1746784991512,1cyclictest0-21swapper/323:03:153
1746784991512,1cyclictest0-21swapper/322:35:243
1746784991512,1cyclictest0-21swapper/322:05:243
1746784991512,1cyclictest0-21swapper/320:55:323
1746784991512,1cyclictest0-21swapper/319:45:593
1746784991512,1cyclictest0-21swapper/319:33:483
174678499151,11cyclictest2111030-21taskset23:20:123
1746784991511,1cyclictest0-21swapper/322:05:003
174678499151,10cyclictest18940942sleep321:05:113
174678499151,10cyclictest1824763-21taskset20:10:093
174678499145,6cyclictest2158928-21turbostat23:50:013
174678499145,6cyclictest1875002-21taskset20:50:093
174678499144,7cyclictest1923246-21taskset21:22:413
174678499141,9cyclictest21028822sleep323:15:123
1746784991413,0cyclictest0-21swapper/300:30:563
1746784991412,1cyclictest0-21swapper/321:55:023
1746784991411,1cyclictest0-21swapper/323:35:173
1746784991411,1cyclictest0-21swapper/322:45:583
1746784991411,1cyclictest0-21swapper/322:45:583
1746784991411,1cyclictest0-21swapper/321:42:593
1746784991411,1cyclictest0-21swapper/320:24:163
174678499141,10cyclictest2197105-21taskset00:10:213
174678499141,10cyclictest2167222-21taskset23:55:103
174678499141,10cyclictest2134406-21chrt23:34:103
174678499141,10cyclictest2012455-21taskset22:17:163
174678499141,10cyclictest1947595-21taskset21:37:213
174678499140,11cyclictest1970317-21taskset21:50:193
22378072131,9sleep22237976-21ntpq00:35:212
20467712130,3sleep22046921-21ps22:40:152
174678499133,7cyclictest0-21swapper/319:55:173
174678499131,9cyclictest2208392-21taskset00:20:143
174678499131,9cyclictest2175530-21taskset00:00:033
174678499131,9cyclictest2076802-21chrt22:56:193
174678499131,9cyclictest20464112sleep322:40:133
174678499131,9cyclictest2025482-21taskset22:25:173
174678499131,9cyclictest1862170-21sleep20:40:003
1746784991312,0cyclictest0-21swapper/319:18:593
1746784991311,1cyclictest0-21swapper/322:11:023
174678499131,10cyclictest1837061-21turbostat20:20:003
174678499131,10cyclictest1805408-21taskset19:55:003
1746784991310,1cyclictest0-21swapper/320:46:383
1746784991310,1cyclictest0-21swapper/320:30:153
1746784991310,1cyclictest0-21swapper/320:30:153
174678499130,10cyclictest2094869-21taskset23:10:103
174678499130,10cyclictest1761651-21taskset19:20:023
190898120,8rtkit-daemon1753179-21munin-node20:44:262
19080432120,8sleep21908181-21ls21:15:012
174678499129,1cyclictest0-21swapper/323:25:163
174678499129,1cyclictest0-21swapper/320:40:093
174678499121,9cyclictest1893802-21taskset21:04:313
20936752110,7sleep22093683-21ssh23:08:012
190898110,7rtkit-daemon667-21snmpd00:13:280
190898110,4rtkit-daemon2061535-21ssh22:48:270
190898110,4rtkit-daemon2061535-21ssh22:48:270
190898110,3rtkit-daemon2086470-21cron23:04:592
18377212111,7sleep11838334-21sed20:20:191
18375192110,1sleep00-21swapper/020:20:170
22323602100,7sleep12232385-21munin-run00:35:001
20680322101,7sleep22068247-21sed22:50:262
20355182101,2sleep10-21swapper/122:30:221
20150782100,8sleep12016247-21grep22:20:161
19816602101,5sleep21981699-21apt-get22:00:122
190898100,6rtkit-daemon421-21avahi-daemon23:06:541
190898100,6rtkit-daemon2167384-21diskstats23:55:110
190898100,5rtkit-daemon2111023-21apt-get23:20:122
190898100,5rtkit-daemon1798765-21users19:45:222
190898100,3rtkit-daemon667-21snmpd22:22:490
18747512100,6sleep21874817-21sed20:50:012
18486832100,7sleep11848754-21ntp_states20:25:201
18486832100,7sleep11848754-21ntp_states20:25:191
17997912101,6sleep01800352-21irqcore19:50:170
174678499108,1cyclictest0-21swapper/319:10:013
2224666291,4sleep22224705-21apt-get00:30:122
2198437290,2sleep20-21swapper/200:12:252
2162010290,6sleep22164097-21cut23:50:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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