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2026-10-29 - 21:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 rackeslot5s.osadl.org (updated Thu Oct 29, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24287992923,5cyclictest11949-21sh11:00:210
2428799290,28cyclictest27763-21ssh10:16:040
2428799280,27cyclictest0-21swapper/010:04:530
2428799280,1cyclictest622-21gdbus11:45:010
2428799280,0cyclictest17665-21diskmemload12:12:340
24287992721,5cyclictest21366-21ssh11:08:210
2428799270,22cyclictest20969-21ssh10:39:090
2428799270,0cyclictest17665-21diskmemload12:25:000
2428799270,0cyclictest0-21swapper/009:11:070
2429899260,25cyclictest25433-21ssh12:39:473
24295992625,1cyclictest1250-21apt-get10:50:592
24295992624,1cyclictest23771-21ssh09:15:002
2429599260,25cyclictest606-21dbus-daemon12:05:002
2429199260,2cyclictest2810-21munin-run11:50:011
24287992622,4cyclictest17665-21diskmemload10:12:330
24287992621,4cyclictest0-21swapper/012:36:020
24287992620,5cyclictest32465-21ssh12:16:070
24287992620,5cyclictest25999-21ntpq09:16:070
24287992620,5cyclictest17665-21diskmemload09:54:060
24287992620,5cyclictest0-21swapper/011:56:030
2428799260,21cyclictest2513-21ssh11:20:260
2429899250,24cyclictest0-21swapper/311:08:163
2429599250,24cyclictest0-21swapper/211:44:412
24287992523,1cyclictest0-21swapper/010:22:380
24287992520,4cyclictest30470-21ssh10:46:410
2428799250,25cyclictest0-21swapper/012:08:410
2428799250,24cyclictest0-21swapper/010:26:470
2428799250,0cyclictest0-21swapper/009:36:380
24298992424,0cyclictest8655-21ssh11:55:063
24298992423,1cyclictest17665-21diskmemload09:37:113
2429899240,23cyclictest17665-21diskmemload11:01:383
2429899240,23cyclictest17665-21diskmemload10:50:233
2429899240,23cyclictest17665-21diskmemload09:30:053
2429899240,23cyclictest0-21swapper/310:37:463
2429599240,23cyclictest17665-21diskmemload11:54:422
2429599240,23cyclictest17665-21diskmemload10:17:512
2429599240,23cyclictest0-21swapper/212:36:542
2429599240,23cyclictest0-21swapper/211:03:182
2429599240,23cyclictest0-21swapper/209:21:212
2429599240,22cyclictest313-21systemd-journal08:10:002
2429599240,1cyclictest0-21swapper/211:06:152
2429599240,1cyclictest0-21swapper/209:15:562
2429199240,23cyclictest18031-21sh12:02:571
2429199240,23cyclictest14141-21ssh12:00:001
2429199240,23cyclictest0-21swapper/112:30:251
2429199240,0cyclictest17665-21diskmemload12:18:341
2429199240,0cyclictest0-21swapper/109:20:271
24287992421,3cyclictest0-21swapper/012:03:280
24287992421,3cyclictest0-21swapper/011:51:420
24287992419,5cyclictest0-21swapper/007:11:010
24287992418,0cyclictest0-21swapper/007:51:020
2428799240,24cyclictest0-21swapper/010:51:100
2428799240,24cyclictest0-21swapper/009:31:290
2428799240,23cyclictest0-21swapper/009:40:090
2428799240,20cyclictest17665-21diskmemload11:29:400
2428799240,0cyclictest17665-21diskmemload12:32:470
2428799240,0cyclictest17665-21diskmemload12:25:070
2428799240,0cyclictest17665-21diskmemload09:29:260
2428799240,0cyclictest0-21swapper/009:47:520
2428799240,0cyclictest0-21swapper/009:20:380
24298992323,0cyclictest0-21swapper/310:58:083
24298992323,0cyclictest0-21swapper/309:50:453
24298992323,0cyclictest0-21swapper/309:41:113
24298992322,1cyclictest7166-21ssh11:53:243
24298992322,1cyclictest17665-21diskmemload11:41:183
24298992322,1cyclictest17665-21diskmemload09:28:313
24298992320,2cyclictest23948-21rm11:39:423
2429899230,2cyclictest13658-21rm11:30:293
2429899230,22cyclictest17665-21diskmemload10:42:203
2429899230,22cyclictest13640-21ssh12:28:403
2429899230,0cyclictest0-21swapper/312:23:023
2429899230,0cyclictest0-21swapper/310:30:193
2429899230,0cyclictest0-21swapper/310:13:503
2429899230,0cyclictest0-21swapper/310:09:283
2429899230,0cyclictest0-21swapper/309:55:393
2429899230,0cyclictest0-21swapper/309:10:173
24295992323,0cyclictest17665-21diskmemload09:52:152
24295992323,0cyclictest0-21swapper/210:49:342
24295992323,0cyclictest0-21swapper/210:31:372
24295992323,0cyclictest0-21swapper/210:11:052
24295992322,1cyclictest28-21ksoftirqd/211:30:082
24295992321,1cyclictest0-21swapper/211:36:582
24295992321,1cyclictest0-21swapper/211:30:002
24295992321,1cyclictest0-21swapper/211:10:192
24295992321,1cyclictest0-21swapper/209:45:002
24295992321,1cyclictest0-21swapper/209:32:062
2429599230,2cyclictest29638-21ssh09:48:162
2429599230,2cyclictest0-21swapper/211:45:372
2429599230,23cyclictest17665-21diskmemload12:19:042
2429599230,22cyclictest9538-21awk10:00:002
2429599230,22cyclictest25709-21ssh12:10:442
2429599230,22cyclictest17665-21diskmemload12:05:292
2429599230,22cyclictest17665-21diskmemload10:55:242
2429599230,22cyclictest17665-21diskmemload10:38:252
2429599230,22cyclictest17665-21diskmemload10:09:282
2429599230,22cyclictest17665-21diskmemload09:26:102
2429599230,22cyclictest0-21swapper/212:22:082
2429599230,0cyclictest17665-21diskmemload12:30:072
2429599230,0cyclictest0-21swapper/212:25:362
2429599230,0cyclictest0-21swapper/210:23:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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