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2026-05-16 - 06:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 rack5slot3s.osadl.org (updated Sat May 16, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10082233165,56sleep20-21swapper/219:09:502
9782228161,55sleep30-21swapper/319:09:273
10062202165,25sleep00-21swapper/019:09:470
6042201166,23sleep10-21swapper/119:05:331
2851421490,4sleep0111199cyclictest23:50:140
11249910399,3cyclictest0-21swapper/221:25:542
2266921000,4sleep122667-21latency19:55:181
214752690,4sleep2112499cyclictest21:05:222
214752690,4sleep2112499cyclictest21:05:222
207352520,1sleep30-21swapper/319:50:223
111199377,14cyclictest753-21munin-run21:35:010
112899341,11cyclictest0-21swapper/320:17:073
112499331,10cyclictest0-21swapper/219:25:262
112499321,22cyclictest0-21swapper/220:06:112
111199326,12cyclictest9-21rcu_preempt21:05:020
112499310,23cyclictest0-21swapper/221:50:272
111199316,12cyclictest3320-21perf19:15:010
111199314,12cyclictest32235-21awk00:00:010
111199311,14cyclictest27219-21munin-run22:35:020
10212310,4sleep339-21rcuc/300:00:223
39232300,5sleep3112899cyclictest22:55:113
112499301,13cyclictest30704-21ntp_states22:40:222
111199307,11cyclictest8410-21perf19:25:020
111199306,12cyclictest18429-21munin-run22:15:010
1111993011,16cyclictest28807-21awk21:25:010
94532290,4sleep09-21rcu_preempt20:40:120
112899291,9cyclictest22202-21diskmemload00:35:263
112899291,18cyclictest0-21swapper/319:42:463
112899291,10cyclictest0-21swapper/320:33:293
112899290,12cyclictest0-21swapper/322:53:263
112499290,20cyclictest0-21swapper/220:39:062
112899281,10cyclictest0-21swapper/300:15:353
112899280,20cyclictest0-21swapper/322:41:123
112499281,13cyclictest0-21swapper/221:31:232
112499281,13cyclictest0-21swapper/219:55:232
112499281,12cyclictest0-21swapper/221:00:182
112499280,9cyclictest0-21swapper/223:26:512
111799282,12cyclictest7530-21irqstats00:15:181
111199284,12cyclictest15293-21perf00:35:020
112899271,9cyclictest0-21swapper/322:31:143
112899271,17cyclictest0-21swapper/319:39:463
112899271,11cyclictest0-21swapper/323:58:103
112899271,11cyclictest0-21swapper/319:26:303
112899270,16cyclictest0-21swapper/322:06:053
112899270,11cyclictest0-21swapper/323:37:223
112899270,11cyclictest0-21swapper/322:24:303
1124992715,6cyclictest0-21swapper/222:29:022
112499271,16cyclictest0-21swapper/200:08:502
112499270,12cyclictest0-21swapper/220:03:072
112899261,12cyclictest0-21swapper/319:23:063
112899261,11cyclictest0-21swapper/320:50:053
112899260,5cyclictest0-21swapper/321:11:303
112899260,10cyclictest0-21swapper/300:14:553
112499266,2cyclictest0-21swapper/223:48:552
112499264,10cyclictest88950irq/132-enp2s0-23:43:172
112499261,7cyclictest0-21swapper/220:33:342
112499261,7cyclictest0-21swapper/200:15:102
1124992616,2cyclictest108562sleep220:40:422
1124992615,3cyclictest0-21swapper/223:04:142
112499261,11cyclictest0-21swapper/222:23:182
112499261,10cyclictest0-21swapper/220:59:222
112499260,18cyclictest0-21swapper/222:56:462
112899251,11cyclictest0-21swapper/321:06:483
112899251,11cyclictest0-21swapper/321:06:483
112899251,11cyclictest0-21swapper/320:29:213
112899251,11cyclictest0-21swapper/320:22:353
112899251,10cyclictest0-21swapper/322:38:403
112899251,10cyclictest0-21swapper/319:16:363
112899251,10cyclictest0-21swapper/319:12:043
112899250,9cyclictest0-21swapper/300:27:153
112499251,9cyclictest16199-21strings19:40:192
112499251,20cyclictest12405-21users19:30:272
112499251,12cyclictest32276-21chrt20:16:232
112499250,9cyclictest0-21swapper/223:37:072
112499250,12cyclictest0-21swapper/222:11:262
112499250,11cyclictest0-21swapper/221:47:032
112499250,11cyclictest0-21swapper/200:14:142
112499250,10cyclictest8860-21fw_packets23:05:142
112499250,10cyclictest0-21swapper/222:19:582
112499250,10cyclictest0-21swapper/222:19:582
111199258,14cyclictest8059-21munin-run23:05:010
35412240,3sleep0111199cyclictest00:05:230
112899249,3cyclictest0-21swapper/321:37:323
112899241,9cyclictest0-21swapper/322:15:053
112899241,9cyclictest0-21swapper/322:15:053
112899241,9cyclictest0-21swapper/321:21:003
112899241,9cyclictest0-21swapper/320:56:443
112899241,9cyclictest0-21swapper/320:07:083
112899241,9cyclictest0-21swapper/319:31:163
112899241,7cyclictest0-21swapper/300:20:393
112899241,12cyclictest12715-21hddtemp_smartct22:00:153
112899241,11cyclictest23813-21if_err_enp1s022:25:173
112899241,10cyclictest0-21swapper/323:50:343
112899241,10cyclictest0-21swapper/319:47:283
112899240,8cyclictest0-21swapper/321:58:193
112899240,13cyclictest0-21swapper/323:30:283
112899240,13cyclictest0-21swapper/323:30:283
112899240,11cyclictest0-21swapper/323:13:583
112499249,3cyclictest0-21swapper/219:54:032
112499245,10cyclictest0-21swapper/220:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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