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2026-04-08 - 04:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Wed Apr 08, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13684210174,8sleep20-21swapper/219:09:522
1348928859,9sleep30-21swapper/319:07:213
1349128471,9sleep00-21swapper/019:07:210
1353427958,6sleep10-21swapper/119:07:541
281152620,0sleep10-21swapper/123:17:011
1378399271,1cyclictest25364-21sed19:30:271
1378399270,2cyclictest23270-21cron21:19:591
13788992625,1cyclictest0-21swapper/323:13:253
1378599260,26cyclictest0-21swapper/222:23:152
1378399241,1cyclictest22712-21ssh22:55:121
1378399231,17cyclictest0-21swapper/100:22:091
13788992222,0cyclictest0-21swapper/300:22:193
1378899220,21cyclictest0-21swapper/323:20:353
1378599229,2cyclictest141rcu_preempt23:53:492
13783992221,1cyclictest0-21swapper/122:34:431
13783992219,2cyclictest0-21swapper/122:06:071
1378599210,20cyclictest0-21swapper/221:15:172
1378399212,19cyclictest6337-21diskmemload23:45:491
1378399210,20cyclictest0-21swapper/121:30:141
1378899201,1cyclictest0-21swapper/322:58:583
13783992019,1cyclictest0-21swapper/120:22:021
1378399192,16cyclictest21304-21apt-get22:35:121
1378399190,18cyclictest0-21swapper/122:40:131
1377899190,19cyclictest0-21swapper/023:30:480
1378899181,8cyclictest6337-21diskmemload23:56:173
1378899180,17cyclictest0-21swapper/322:13:423
1378599180,13cyclictest0-21swapper/219:45:142
13783991816,1cyclictest0-21swapper/121:49:001
1378399180,17cyclictest0-21swapper/122:03:081
1378399180,17cyclictest0-21swapper/122:03:081
1377899189,2cyclictest13-21ksoftirqd/022:50:000
1378899172,2cyclictest225-21systemd-journal22:54:593
1378399175,11cyclictest1142-21runrttasks22:49:071
13783991716,1cyclictest25-21ksoftirqd/121:43:081
13783991713,2cyclictest0-21swapper/100:31:291
1378399170,17cyclictest0-21swapper/100:27:431
1377899172,11cyclictest16929-21/usr/sbin/munin21:35:110
13788991615,1cyclictest0-21swapper/322:05:133
13788991615,0cyclictest0-21swapper/300:39:003
13788991614,1cyclictest0-21swapper/322:49:443
1378899160,2cyclictest0-21swapper/323:00:133
1378899160,0cyclictest0-21swapper/300:32:183
1378599160,15cyclictest0-21swapper/222:29:582
1378599160,14cyclictest0-21swapper/200:20:282
1378399169,4cyclictest0-21swapper/121:38:211
1378399160,16cyclictest0-21swapper/121:58:001
1378399160,0cyclictest0-21swapper/123:57:431
1377899165,6cyclictest225-21systemd-journal00:15:010
1377899160,15cyclictest0-21swapper/000:02:460
13788991514,1cyclictest0-21swapper/323:19:533
1378899150,15cyclictest0-21swapper/321:57:203
1378899150,14cyclictest0-21swapper/323:26:363
13785991515,0cyclictest0-21swapper/223:22:312
1378599150,15cyclictest0-21swapper/221:35:592
1378399153,11cyclictest7835-21dump-pmu-power20:05:011
1378399153,11cyclictest7835-21dump-pmu-power20:05:001
13783991515,0cyclictest0-21swapper/122:29:131
13778991513,1cyclictest13-21ksoftirqd/022:11:340
13778991511,3cyclictest24140-21tr23:15:140
1377899150,1cyclictest0-21swapper/023:36:330
1378899143,10cyclictest11389-21ssh00:05:153
13788991414,0cyclictest0-21swapper/322:03:573
13788991414,0cyclictest0-21swapper/322:03:563
13788991410,3cyclictest20695-21head20:30:173
1378899140,0cyclictest0-21swapper/300:16:183
13785991410,3cyclictest27825-21sh00:14:552
1378399142,6cyclictest6337-21diskmemload23:01:341
13783991413,1cyclictest0-21swapper/122:50:321
13783991413,1cyclictest0-21swapper/100:17:571
13783991412,1cyclictest0-21swapper/100:02:321
1378399141,1cyclictest6337-21diskmemload21:11:201
1378399140,1cyclictest0-21swapper/121:23:481
1377899147,6cyclictest22191-21awk22:55:000
1377899142,7cyclictest6337-21diskmemload00:40:000
1377899142,4cyclictest0-21swapper/022:20:160
13778991410,3cyclictest16115-21cron19:15:000
1377899140,1cyclictest0-21swapper/022:07:050
1377899140,1cyclictest0-21swapper/000:17:450
1377899140,14cyclictest0-21swapper/023:24:130
1377899140,14cyclictest0-21swapper/021:20:590
1378899139,3cyclictest23077-21grep19:25:273
1378899135,6cyclictest18247-21ssh22:33:033
13788991311,1cyclictest0-21swapper/300:28:073
13788991310,2cyclictest8064-21grep23:05:173
13788991310,2cyclictest3996-21grep19:55:183
13788991310,2cyclictest25790-21grep23:35:153
13788991310,2cyclictest23441-21cat21:20:013
13788991310,2cyclictest21773-21wc00:10:243
13788991310,2cyclictest16617-21cut19:15:143
13788991310,2cyclictest1161-21grep19:50:133
13788991310,2cyclictest10651-21grep23:45:163
1378899130,9cyclictest17894-21smartctl23:30:153
1378599139,3cyclictest22857-21cat19:25:262
1378599139,3cyclictest18848-21ssh00:09:352
13785991310,2cyclictest28760-21grep19:40:142
13785991310,2cyclictest28693-21cat20:45:262
13785991310,2cyclictest27219-21grep19:35:202
13785991310,2cyclictest25864-21ls19:35:002
13785991310,2cyclictest22679-21grep22:35:212
13785991310,2cyclictest17024-21dpkg23:30:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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