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2026-04-18 - 07:20

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 Apr 18, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
113122240163,25sleep00-21swapper/019:05:420
113292236164,22sleep20-21swapper/219:05:562
116232202167,23sleep10-21swapper/119:09:451
114332201165,24sleep30-21swapper/319:07:193
2699621400,5sleep21174199cyclictest23:20:252
191982690,1sleep10-21swapper/119:25:021
11741995148,2cyclictest0-21swapper/221:31:492
26522500,4sleep011-21rcuc/022:25:250
145802500,2sleep314456-21/usr/sbin/munin22:55:133
231952490,4sleep223196-21grep00:25:262
11741994642,2cyclictest0-21swapper/221:48:492
1173599390,34cyclictest0-21swapper/121:41:241
1174699348,3cyclictest32086-21cpu23:35:123
11735993413,12cyclictest0-21swapper/121:57:171
11741993128,2cyclictest0-21swapper/221:26:532
1173599301,11cyclictest579-21systemd-journal21:15:011
11735993010,3cyclictest579-21systemd-journal23:30:011
11735993010,3cyclictest579-21systemd-journal23:30:011
1173599300,21cyclictest0-21swapper/123:30:221
1172799302,17cyclictest8921-21kworker/0:022:41:230
1174699296,10cyclictest0-21swapper/319:55:233
1174699296,10cyclictest0-21swapper/319:55:233
1174699291,6cyclictest0-21swapper/323:25:413
1174699291,6cyclictest0-21swapper/323:25:413
1174199292,14cyclictest1082-40dnf19:55:232
1174199292,14cyclictest1082-40dnf19:55:232
1173599292,8cyclictest13902-21munin-run19:15:021
11735992925,3cyclictest0-21swapper/123:17:441
1173599291,18cyclictest23438-21irqstats22:00:141
1172799292,7cyclictest654-21kworker/0:022:23:210
1174199283,9cyclictest21223-21taskset00:22:032
11735992823,3cyclictest0-21swapper/119:28:391
11735992817,9cyclictest6854-21fw_packets23:50:151
1173599281,3cyclictest0-21swapper/123:45:231
1173599281,10cyclictest13169-21memory22:50:181
1172799286,5cyclictest11603-21kworker/0:120:03:260
1172799281,21cyclictest0-21swapper/022:45:190
1174699271,11cyclictest27994-21/usr/sbin/munin19:45:263
11735992724,2cyclictest0-21swapper/119:17:251
11735992723,3cyclictest0-21swapper/122:46:271
11735992723,3cyclictest0-21swapper/122:43:591
11735992723,3cyclictest0-21swapper/121:50:071
11735992723,3cyclictest0-21swapper/120:46:591
11735992723,2cyclictest0-21swapper/121:45:121
1173599272,12cyclictest20565-21ntp_states00:20:211
1173599271,23cyclictest436-21unixbench-2d22:20:251
1174699261,7cyclictest0-21swapper/323:11:523
1174699261,7cyclictest0-21swapper/322:54:503
1174699261,13cyclictest0-21swapper/321:40:243
1174699261,13cyclictest0-21swapper/321:32:203
1174699261,10cyclictest23237-21sshd19:33:213
1173599266,17cyclictest5676-21cpu22:35:121
11735992623,2cyclictest0-21swapper/123:09:211
11735992623,2cyclictest0-21swapper/121:03:561
11735992623,2cyclictest0-21swapper/119:56:401
11735992623,2cyclictest0-21swapper/119:56:401
11735992623,2cyclictest0-21swapper/100:02:221
11735992622,3cyclictest0-21swapper/123:42:111
11735992622,3cyclictest0-21swapper/121:31:541
11735992622,3cyclictest0-21swapper/100:30:451
1173599261,8cyclictest0-21swapper/100:06:221
1173599261,19cyclictest0-21swapper/122:15:581
1173599261,19cyclictest0-21swapper/122:15:581
1172799268,4cyclictest26630-21kworker/0:222:35:550
1172799261,7cyclictest87350irq/126-enp1s0-22:11:400
11727992613,8cyclictest0-21swapper/023:05:540
11727992613,8cyclictest0-21swapper/000:17:410
1172799261,20cyclictest0-21swapper/023:55:220
1174699254,4cyclictest0-21swapper/321:35:333
1174699253,6cyclictest0-21swapper/319:25:363
11746992520,4cyclictest87350irq/126-enp1s0-23:00:153
1174699251,7cyclictest0-21swapper/322:44:553
1174699251,6cyclictest19494-21sed23:05:163
1174699251,6cyclictest0-21swapper/321:14:163
1174699251,5cyclictest0-21swapper/320:00:223
11746992515,1cyclictest0-21swapper/321:55:173
1174699251,3cyclictest26477-21/usr/sbin/munin23:20:183
1173599259,2cyclictest579-21systemd-journal20:20:011
1173599258,4cyclictest15566-21sed22:55:231
11735992522,2cyclictest0-21swapper/100:17:311
1173599252,20cyclictest0-21swapper/121:37:211
1173599252,11cyclictest0-21swapper/100:37:041
1173599252,11cyclictest0-21swapper/100:37:041
1173599251,11cyclictest4279-21irqstats22:30:181
1173599251,11cyclictest24674-21ntp_states19:35:211
1173599251,11cyclictest1-21systemd00:00:011
1173599250,23cyclictest0-21swapper/120:35:001
1172799255,4cyclictest20032-21kworker/0:022:07:310
1172799254,6cyclictest755-21rngd21:45:210
1172799252,17cyclictest1661-21perf23:40:000
11727992512,7cyclictest0-21swapper/021:11:110
1172799251,18cyclictest0-21swapper/022:15:220
1172799251,18cyclictest0-21swapper/022:15:220
1172799251,17cyclictest0-21swapper/023:01:240
1174699246,9cyclictest0-21swapper/322:45:123
1174699246,4cyclictest316-21diskmemload21:21:133
1174699244,9cyclictest27833-21sshd00:37:223
1174699244,9cyclictest27833-21sshd00:37:223
1174699241,7cyclictest20253-21cat21:55:013
1174699241,7cyclictest10463-40updatedb00:00:023
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