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2025-12-29 - 11:21

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 Mon Dec 29, 2025 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
79132236162,23sleep10-21swapper/119:09:531
77902202166,24sleep20-21swapper/219:08:172
59592201166,23sleep30-21swapper/319:05:043
59662200162,26sleep00-21swapper/019:05:090
1399221820,4sleep1800999cyclictest19:20:151
1137921360,3sleep0800299cyclictest00:10:020
167482920,4sleep3802199cyclictest19:25:243
211482660,8sleep341-21ksoftirqd/319:35:233
250342530,7sleep011-21rcuc/022:11:480
302902410,1sleep00-21swapper/022:25:160
802199345,12cyclictest0-21swapper/323:15:093
802199341,12cyclictest8851-21memory21:35:203
802199338,4cyclictest801-21snmpd22:25:433
802199321,14cyclictest6034-21gzip23:55:233
802199311,14cyclictest0-21swapper/321:52:043
800299302,13cyclictest20906-21munin-run22:05:010
800299295,11cyclictest3936-21awk22:40:020
8021992812,3cyclictest17299-21perl21:55:163
802199281,14cyclictest0-21swapper/319:50:273
800999281,18cyclictest23100-21hddtemp_smartct00:35:201
802199279,12cyclictest0-21swapper/320:38:473
802199271,22cyclictest31408-21fschecks_time20:00:153
8021992712,10cyclictest0-21swapper/321:04:573
802199271,13cyclictest764-21ntpd23:25:213
802199271,13cyclictest0-21swapper/300:10:193
802199270,18cyclictest0-21swapper/320:10:113
802199270,18cyclictest0-21swapper/320:10:113
800299271,13cyclictest7704-21munin-run21:35:010
802199269,3cyclictest0-21swapper/321:41:083
802199261,13cyclictest0-21swapper/323:12:033
802199261,13cyclictest0-21swapper/319:10:513
802199261,12cyclictest0-21swapper/323:38:203
802199261,12cyclictest0-21swapper/320:53:473
802199261,12cyclictest0-21swapper/319:33:483
802199261,11cyclictest0-21swapper/321:07:553
802199261,11cyclictest0-21swapper/320:08:353
8002992610,14cyclictest404-21perf20:05:010
800299260,13cyclictest11497-21awk20:30:020
802199259,3cyclictest0-21swapper/322:30:573
802199251,19cyclictest23148-21ntp_states19:40:243
802199251,11cyclictest0-21swapper/323:31:243
802199251,11cyclictest0-21swapper/323:03:313
802199251,11cyclictest0-21swapper/319:58:353
802199251,10cyclictest86950irq/126-enp1s0-00:18:493
802199251,10cyclictest0-21swapper/323:08:513
204212250,4sleep320424-21unixbench_multi22:00:263
802199248,3cyclictest0-21swapper/320:45:393
802199246,3cyclictest0-21swapper/322:15:253
802199241,5cyclictest31402-21kernelversion23:40:203
802199241,21cyclictest0-21swapper/300:28:233
802199241,20cyclictest0-21swapper/300:23:253
802199241,15cyclictest0-21swapper/319:16:033
802199241,12cyclictest8092-21chrt22:47:133
802199241,11cyclictest0-21swapper/323:50:433
802199241,11cyclictest0-21swapper/321:19:473
802199241,10cyclictest13972-21hddtemp_smartct19:20:163
802199241,10cyclictest0-21swapper/322:43:473
800999240,19cyclictest0-21swapper/100:24:061
800299246,15cyclictest17127-21munin-run23:10:010
802199238,3cyclictest0-21swapper/322:12:593
802199236,3cyclictest0-21swapper/320:59:073
802199234,3cyclictest0-21swapper/322:24:593
802199231,9cyclictest0-21swapper/322:37:313
8021992311,3cyclictest0-21swapper/323:20:213
802199231,10cyclictest0-21swapper/322:59:473
802199231,10cyclictest0-21swapper/322:53:553
802199231,10cyclictest0-21swapper/300:00:353
8016992315,5cyclictest20715-21systemd-journal22:02:472
800999236,6cyclictest0-21swapper/121:56:041
8009992314,2cyclictest0-21swapper/121:15:201
8009992313,2cyclictest0-21swapper/100:10:191
800999231,16cyclictest0-21swapper/100:31:241
800999231,16cyclictest0-21swapper/100:04:021
800999231,13cyclictest741-21ntp_states22:30:211
800999231,11cyclictest0-21swapper/122:52:411
800999231,11cyclictest0-21swapper/122:00:301
800299235,15cyclictest19314-21idleruntime-cro23:15:010
800299234,16cyclictest26268-21idleruntime-cro19:50:000
800299234,11cyclictest0-21swapper/023:50:280
253092230,4sleep2801699cyclictest23:25:252
802199228,3cyclictest0-21swapper/323:46:193
802199228,3cyclictest0-21swapper/323:46:193
802199227,3cyclictest0-21swapper/320:40:273
802199225,3cyclictest0-21swapper/321:11:073
802199225,3cyclictest0-21swapper/300:31:433
802199221,14cyclictest0-21swapper/320:16:033
802199221,13cyclictest0-21swapper/320:30:113
802199221,12cyclictest0-21swapper/320:24:353
802199221,11cyclictest0-21swapper/321:23:233
802199221,10cyclictest0-21swapper/322:06:353
802199221,10cyclictest0-21swapper/321:26:203
802199221,10cyclictest0-21swapper/321:26:203
8016992213,6cyclictest12544-21systemd-journal22:57:582
800999229,4cyclictest0-21swapper/100:25:191
800999229,11cyclictest8472-21grep21:35:161
800999223,11cyclictest27323-21latency19:50:181
800999222,12cyclictest0-21swapper/121:50:261
800999221,13cyclictest23107-21perf22:10:001
800999220,4cyclictest0-21swapper/123:52:421
800299221,14cyclictest0-21swapper/023:15:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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