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2026-04-21 - 06:04

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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  Intel
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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Tue Apr 21, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1355421120,6sleep00-21swapper/020:14:210
2485991070,19rtkit-daemon17754-21fschecks_time21:09:100
220602970,4sleep222063-21sh19:39:202
248599920,6rtkit-daemon19234-21fschecks_time21:59:080
707199913,80cyclictest25964-21gltestperf18:54:163
234512910,13sleep015-21rcuc/020:29:170
707199894,78cyclictest0-21swapper/318:14:253
707199894,65cyclictest0-21swapper/321:50:203
707199894,62cyclictest0-21swapper/320:18:543
707199884,77cyclictest7385-21cpuspeed_turbos19:19:103
248599880,31rtkit-daemon7057-21cyclictest22:06:380
707199874,65cyclictest0-21swapper/321:57:263
707199874,63cyclictest0-21swapper/319:59:193
707199873,75cyclictest12133-21unixbench_singl20:59:263
707199873,75cyclictest12133-21unixbench_singl20:59:263
707199864,75cyclictest0-21swapper/321:23:503
707199864,73cyclictest19476-21ssh20:24:103
707199864,66cyclictest0-21swapper/322:30:203
707199863,76cyclictest3534-21munin-node20:49:173
707199863,76cyclictest0-21swapper/317:19:173
707199855,73cyclictest0-21swapper/317:30:433
707199854,74cyclictest0-21swapper/322:14:213
707199854,74cyclictest0-21swapper/322:14:213
707199854,74cyclictest0-21swapper/322:03:083
707199854,73cyclictest0-21swapper/321:44:223
707199854,72cyclictest0-21swapper/320:44:023
707199853,75cyclictest6042-21iostat_ios21:39:133
707199853,74cyclictest0-21swapper/319:37:283
707199853,62cyclictest320991diskmemload20:43:493
248599850,24rtkit-daemon2822-21ssh20:47:180
707199847,56cyclictest0-21swapper/320:04:193
707199844,73cyclictest0-21swapper/321:29:223
707199844,72cyclictest31632-21df_inode19:54:113
707199844,61cyclictest0-21swapper/319:49:003
707199844,57cyclictest0-21swapper/317:24:293
707199843,74cyclictest18415-21open_inodes21:09:213
707199843,71cyclictest0-21swapper/319:11:043
248599840,28rtkit-daemon27995-21ssh22:12:370
248599840,28rtkit-daemon2484-21rtkit-daemon17:14:343
248599840,25rtkit-daemon0-21swapper/121:56:450
707199834,73cyclictest0-21swapper/322:05:453
707199834,72cyclictest0-21swapper/320:19:183
707199834,72cyclictest0-21swapper/320:19:183
707199833,65cyclictest4909-21ntp_offset19:14:253
707199833,46cyclictest121850irq/46-eth020:37:453
248599830,5rtkit-daemon2484-21rtkit-daemon20:44:032
707199824,71cyclictest0-21swapper/322:27:093
707199824,71cyclictest0-21swapper/321:15:173
707199824,71cyclictest0-21swapper/319:44:093
707199824,71cyclictest0-21swapper/319:44:093
707199824,71cyclictest0-21swapper/317:59:303
707199824,70cyclictest0-21swapper/319:28:563
707199824,62cyclictest0-21swapper/320:58:533
707199824,60cyclictest0-21swapper/320:30:533
707199824,57cyclictest0-21swapper/321:05:363
707199823,62cyclictest0-21swapper/319:30:523
248599820,24rtkit-daemon7938-21fschecks_count17:09:190
707199816,55cyclictest0-21swapper/321:38:173
707199816,55cyclictest0-21swapper/321:38:173
707199814,70cyclictest0-21swapper/319:39:333
707199814,59cyclictest0-21swapper/322:22:333
707199814,59cyclictest0-21swapper/322:22:333
707199813,71cyclictest28899-21unixbench-2d21:24:253
707199813,46cyclictest27298-21runrttasks22:10:043
248599810,26rtkit-daemon0-21swapper/122:28:370
248599810,26rtkit-daemon0-21swapper/122:19:150
248599810,26rtkit-daemon0-21swapper/122:19:150
707199804,69cyclictest0-21swapper/318:59:093
707199804,60cyclictest0-21swapper/318:19:103
707199804,56cyclictest21402-21iostat_ios18:44:193
248599800,6rtkit-daemon0-21swapper/020:59:250
248599800,6rtkit-daemon0-21swapper/020:59:250
248599800,28rtkit-daemon0-21swapper/122:17:450
248599800,28rtkit-daemon0-21swapper/122:17:450
707199793,68cyclictest12359-21sshd22:36:533
707199793,59cyclictest9401-21munin-node20:09:103
248599790,24rtkit-daemon5201-21timerwakeupswit20:49:260
707199784,66cyclictest0-21swapper/319:08:563
707199784,66cyclictest0-21swapper/319:08:563
707199783,66cyclictest15774-21cpu18:34:113
248599780,5rtkit-daemon2484-21rtkit-daemon18:24:463
707199774,66cyclictest0-21swapper/317:34:173
707199773,47cyclictest7878-21forks17:09:193
707199754,55cyclictest0-21swapper/317:54:103
707199734,63cyclictest0-21swapper/318:04:273
707199734,62cyclictest0-21swapper/317:54:003
707199733,63cyclictest14153-21munin-node18:29:213
707199733,63cyclictest14153-21munin-node18:29:213
248599730,20rtkit-daemon0-21swapper/122:34:062
707199724,47cyclictest0-21swapper/317:44:173
707199723,62cyclictest19715-21tail18:39:303
707199723,59cyclictest3726-21stty18:09:103
707199714,60cyclictest0-21swapper/318:53:543
707199704,58cyclictest0-21swapper/317:43:593
248599670,5rtkit-daemon2484-21rtkit-daemon21:37:392
248599670,5rtkit-daemon2484-21rtkit-daemon21:37:392
248599670,5rtkit-daemon2484-21rtkit-daemon19:57:132
248599660,5rtkit-daemon2484-21rtkit-daemon19:37:512
195726618,41sleep22058-21sh18:04:192
707099654,53cyclictest0-21swapper/221:44:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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