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2026-03-29 - 01:42

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 Sun Mar 29, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12878211996,17sleep30-21swapper/319:07:273
13065211794,18sleep00-21swapper/019:09:520
11223211693,16sleep20-21swapper/219:05:022
13031210695,6sleep10-21swapper/119:09:251
107872680,0sleep20-21swapper/222:30:172
107872680,0sleep20-21swapper/222:30:162
13106993918,19cyclictest0-21swapper/319:45:123
178072300,1sleep229-21rcuc/221:30:322
104362250,0sleep30-21swapper/322:30:143
104362250,0sleep30-21swapper/322:30:133
1310399240,2cyclictest0-21swapper/022:20:030
1310599230,22cyclictest0-21swapper/222:20:012
1310699210,19cyclictest0-21swapper/321:50:103
1310499210,19cyclictest0-21swapper/100:05:111
1310699190,2cyclictest0-21swapper/319:10:103
1310499190,1cyclictest0-21swapper/123:35:121
171042180,1sleep117105-21sh23:44:511
13106991813,3cyclictest7904-21ssh23:35:123
1310599180,2cyclictest0-21swapper/219:15:112
1310499180,4cyclictest0-21swapper/123:25:051
1310499180,16cyclictest0-21swapper/121:50:111
121782170,2sleep212183-21ntp_kernel_pll_20:25:172
1310699160,14cyclictest0-21swapper/321:32:083
13105991612,2cyclictest29-21rcuc/219:20:132
13104991613,2cyclictest29177-21kworker/u8:223:02:051
1310499161,13cyclictest23292-21munin-node1
1310499160,14cyclictest0-21swapper/121:35:121
1310699151,12cyclictest0-21swapper/323:48:353
1310699150,13cyclictest0-21swapper/323:41:483
1310599151,12cyclictest0-21swapper/221:00:132
1310599151,12cyclictest0-21swapper/200:14:222
13105991510,3cyclictest7897-21ntp_states21:20:182
13105991510,3cyclictest19823-21ssh22:06:022
1310599150,13cyclictest0-21swapper/200:35:142
1310599150,13cyclictest0-21swapper/200:00:542
1310599150,12cyclictest32200-21latency_hist22:20:012
13104991512,2cyclictest31420-21kworker/u8:120:25:051
13104991512,2cyclictest18949-21kworker/u8:021:30:041
13104991512,2cyclictest0-21swapper/119:21:021
1310499151,12cyclictest28875-21users19:46:031
13104991510,3cyclictest6985-21apt-get20:15:051
1310499150,13cyclictest0-21swapper/123:11:171
1310499150,13cyclictest0-21swapper/122:39:281
1310399151,12cyclictest7958-21ssh21:20:180
13103991510,3cyclictest5266-21irqstats00:05:160
1310699149,3cyclictest29715-21munin-node3
1310699149,3cyclictest0-21swapper/319:30:123
13106991411,2cyclictest29672-21ssh23:24:093
13106991411,2cyclictest0-21swapper/323:50:283
13106991411,2cyclictest0-21swapper/322:52:183
13106991411,2cyclictest0-21swapper/322:45:293
13106991411,2cyclictest0-21swapper/300:02:093
1310699140,2cyclictest0-21swapper/321:47:293
1310699140,2cyclictest0-21swapper/321:43:283
1310699140,13cyclictest0-21swapper/323:15:083
1310699140,13cyclictest0-21swapper/322:02:593
1310699140,12cyclictest0-21swapper/323:09:183
1310699140,12cyclictest0-21swapper/322:05:143
1310599149,3cyclictest0-21swapper/223:45:042
1310599142,6cyclictest0-21swapper/222:45:002
13105991410,2cyclictest301ktimersoftd/219:36:022
1310599140,12cyclictest31-21ksoftirqd/223:55:352
1310599140,12cyclictest24114-21ssh21:37:132
1310599140,12cyclictest0-21swapper/223:02:462
1310499142,6cyclictest0-21swapper/122:45:001
13104991411,2cyclictest0-21swapper/121:42:231
13104991411,2cyclictest0-21swapper/119:30:121
1310499140,3cyclictest16045-21ls19:15:161
1310499140,2cyclictest0-21swapper/120:00:201
1310499140,13cyclictest0-21swapper/122:16:131
1310499140,12cyclictest0-21swapper/100:15:391
13103991411,2cyclictest29232-21diskmemload21:49:290
13103991411,2cyclictest0-21swapper/023:38:200
13103991411,2cyclictest0-21swapper/023:03:300
13103991411,2cyclictest0-21swapper/000:02:000
1310399140,2cyclictest0-21swapper/023:48:190
1310399140,2cyclictest0-21swapper/022:26:300
1310399140,2cyclictest0-21swapper/020:59:590
1310399140,13cyclictest0-21swapper/021:25:100
1310399140,12cyclictest20180-21ssh22:06:180
1310399140,12cyclictest0-21swapper/022:42:250
1310399140,12cyclictest0-21swapper/022:13:150
1310399140,12cyclictest0-21swapper/022:00:180
1310399140,12cyclictest0-21swapper/019:10:120
12982140,2sleep129232-21diskmemload22:20:301
1310699132,6cyclictest0-21swapper/321:00:003
13106991310,2cyclictest0-21swapper/323:12:093
13106991310,2cyclictest0-21swapper/321:59:183
13106991310,2cyclictest0-21swapper/321:16:013
13106991310,2cyclictest0-21swapper/300:23:393
13106991310,2cyclictest0-21swapper/300:16:583
13106991310,2cyclictest0-21swapper/300:07:503
1310699130,2cyclictest6947-21ssh21:20:123
1310699130,2cyclictest0-21swapper/323:57:403
1310699130,2cyclictest0-21swapper/322:21:383
1310699130,12cyclictest0-21swapper/322:59:193
1310699130,12cyclictest0-21swapper/322:25:293
1310699130,12cyclictest0-21swapper/321:10:203
1310699130,12cyclictest0-21swapper/300:14:093
1310599138,3cyclictest29997-21ssh00:30:422
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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