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2026-03-13 - 19:24

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 Fri Mar 13, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2958121140,0sleep10-21swapper/109:34:431
2770128774,9sleep00-21swapper/007:08:590
2743028665,16sleep30-21swapper/307:05:273
2746428370,9sleep20-21swapper/207:05:542
2751628059,6sleep10-21swapper/107:06:341
185852620,0sleep30-21swapper/312:02:033
2787399287,20cyclictest0-21swapper/211:03:132
27873992725,1cyclictest0-21swapper/209:24:282
2787399270,27cyclictest0-21swapper/212:26:342
18122270,0sleep10-21swapper/109:56:031
2787399260,25cyclictest0-21swapper/211:30:042
2787399240,23cyclictest0-21swapper/212:03:322
2787099240,22cyclictest0-21swapper/110:34:081
2787399230,22cyclictest0-21swapper/212:05:152
2787399230,22cyclictest0-21swapper/211:42:532
2787399221,20cyclictest0-21swapper/210:32:362
2787399217,11cyclictest0-21swapper/212:20:122
27873992119,1cyclictest20469-21diskmemload09:50:102
27873992110,10cyclictest0-21swapper/210:40:112
27870992120,1cyclictest0-21swapper/110:08:081
2786899217,7cyclictest28861-21ssh09:15:010
27868992117,4cyclictest28312-21apache209:53:470
2787399209,10cyclictest0-21swapper/212:39:092
2787399203,8cyclictest0-21swapper/209:30:082
27873992018,1cyclictest20469-21diskmemload10:27:442
27873992018,1cyclictest20469-21diskmemload09:45:142
27873992017,3cyclictest0-21swapper/211:09:492
27873992015,3cyclictest55650irq/127-enp2s0-09:13:412
27873992015,3cyclictest20469-21diskmemload10:45:242
27870992019,1cyclictest0-21swapper/109:46:491
2787099200,9cyclictest0-21swapper/112:08:561
2787099200,1cyclictest0-21swapper/109:15:161
2787099200,18cyclictest0-21swapper/112:20:141
2786899205,3cyclictest141rcu_preempt12:03:500
2786899202,3cyclictest141rcu_preempt11:31:480
2787599191,10cyclictest19663-21sensors10:45:233
27873991913,5cyclictest2159-21sed10:35:172
27873991913,5cyclictest2159-21sed10:35:162
2787399191,17cyclictest0-21swapper/209:40:432
2787399190,19cyclictest0-21swapper/210:58:482
2787099190,18cyclictest0-21swapper/111:35:041
2787099190,18cyclictest0-21swapper/107:30:221
2786899190,6cyclictest0-21swapper/012:15:070
2787599180,15cyclictest1142-21runrttasks09:34:243
2787399187,10cyclictest0-21swapper/211:45:232
2787399186,8cyclictest0-21swapper/207:55:132
27873991816,2cyclictest55650irq/127-enp2s0-10:12:142
27873991816,1cyclictest20469-21diskmemload11:17:322
27873991812,1cyclictest225-21systemd-journal10:05:002
2787399181,16cyclictest30373-21seq11:10:592
2787099180,16cyclictest0-21swapper/110:00:111
2786899180,18cyclictest0-21swapper/012:31:040
2787599178,7cyclictest11403-21apt-get11:20:013
27875991714,2cyclictest15865-21sendmail12:40:003
2787599170,16cyclictest0-21swapper/309:20:333
2787399176,8cyclictest20469-21diskmemload10:54:522
27873991716,1cyclictest0-21swapper/211:27:182
27873991716,1cyclictest0-21swapper/211:27:172
27873991716,1cyclictest0-21swapper/209:35:112
27873991713,3cyclictest27301-21uniq08:15:162
2787099171,15cyclictest1250-21needreboot10:15:181
2787099170,16cyclictest20469-21diskmemload09:26:301
2786899170,1cyclictest0-21swapper/009:27:270
36472160,0sleep30-21swapper/310:55:193
27875991615,1cyclictest0-21swapper/309:18:203
2787399169,7cyclictest0-21swapper/211:52:272
2787399168,7cyclictest0-21swapper/209:19:212
27873991615,1cyclictest20469-21diskmemload11:37:252
27873991615,1cyclictest0-21swapper/209:55:132
27873991614,1cyclictest6551-21apt12:14:592
27873991611,4cyclictest0-21swapper/208:55:002
27873991610,5cyclictest13599-21/usr/sbin/munin09:25:202
2787099168,6cyclictest8885-21ssh09:40:481
27870991614,2cyclictest0-21swapper/109:12:451
2787099160,4cyclictest4520-21kworker/1:011:00:381
27875991513,1cyclictest0-21swapper/310:39:563
27875991513,1cyclictest0-21swapper/310:39:553
2787399159,5cyclictest0-21swapper/207:50:142
2787399157,7cyclictest20469-21diskmemload11:22:202
2787399155,9cyclictest0-21swapper/212:32:132
27873991510,2cyclictest0-21swapper/211:55:162
2787099158,5cyclictest6549-21sh12:34:131
2787099158,3cyclictest2149-21rm11:14:191
2787099152,12cyclictest18032-21awk10:25:191
27870991515,0cyclictest0-21swapper/111:27:501
27870991515,0cyclictest0-21swapper/111:27:491
2787099150,14cyclictest3268-21ssh12:12:241
2786899154,6cyclictest7922-21munin-run10:20:010
2786899151,2cyclictest0-21swapper/010:45:200
2786899150,2cyclictest0-21swapper/011:35:010
2786899150,15cyclictest0-21swapper/012:24:190
2786899150,14cyclictest0-21swapper/012:10:120
74162140,0sleep30-21swapper/310:19:383
2787599149,3cyclictest27909-21tr08:15:213
2787599147,6cyclictest25206-21kworker/3:209:47:543
2787599147,6cyclictest12040-21/usr/sbin/munin11:20:133
2787599142,6cyclictest0-21swapper/311:45:153
27875991410,3cyclictest7635-21grep10:00:123
27875991410,3cyclictest15049-21grep11:40:263
27875991410,2cyclictest7169-21grep12:15:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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