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2026-07-20 - 03:14

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 Mon Jul 20, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991080,4rtkit-daemon2193-21rtkit-daemon22:31:132
219499960,25rtkit-daemon0-21swapper/320:11:483
219499910,6rtkit-daemon2193-21rtkit-daemon20:46:170
219499890,6rtkit-daemon0-21swapper/320:31:333
219499880,4rtkit-daemon2193-21rtkit-daemon19:26:282
219499870,5rtkit-daemon2193-21rtkit-daemon18:28:300
219499850,5rtkit-daemon2193-21rtkit-daemon18:36:000
219499850,5rtkit-daemon2193-21rtkit-daemon18:36:000
219499850,4rtkit-daemon2193-21rtkit-daemon23:31:410
79392840,2sleep3361ktimersoftd/321:26:243
219499840,5rtkit-daemon2193-21rtkit-daemon20:51:242
219499830,5rtkit-daemon2193-21rtkit-daemon19:20:050
219499830,5rtkit-daemon2193-21rtkit-daemon19:20:050
219499830,4rtkit-daemon2193-21rtkit-daemon20:41:100
219499820,4rtkit-daemon2193-21rtkit-daemon19:01:290
219499810,5rtkit-daemon2193-21rtkit-daemon21:37:072
219499810,5rtkit-daemon2193-21rtkit-daemon19:11:062
219499810,4rtkit-daemon2193-21rtkit-daemon22:14:362
219499780,4rtkit-daemon2193-21rtkit-daemon21:55:292
219499770,7rtkit-daemon0-21swapper/320:59:313
219499770,5rtkit-daemon2193-21rtkit-daemon22:44:420
219499770,25rtkit-daemon0-21swapper/323:04:123
219499760,6rtkit-daemon0-21swapper/322:24:513
219499760,6rtkit-daemon0-21swapper/322:10:213
219499760,4rtkit-daemon2193-21rtkit-daemon20:38:550
219499760,4rtkit-daemon2193-21rtkit-daemon20:38:550
281432750,5sleep00-21swapper/021:55:240
219499750,6rtkit-daemon0-21swapper/018:50:440
219499750,5rtkit-daemon0-21swapper/321:04:313
219499750,4rtkit-daemon2193-21rtkit-daemon23:25:560
219499740,8rtkit-daemon0-21swapper/321:11:312
31373997333,32cyclictest87341ssh20:42:523
219499710,13rtkit-daemon2193-21rtkit-daemon20:48:391
219499690,5rtkit-daemon2193-21rtkit-daemon23:30:560
219499690,4rtkit-daemon2193-21rtkit-daemon21:33:450
219499690,10rtkit-daemon0-21swapper/021:48:070
219499670,4rtkit-daemon2193-21rtkit-daemon21:36:300
219499660,6rtkit-daemon0-21swapper/221:43:453
219499660,5rtkit-daemon2193-21rtkit-daemon18:41:221
31373996529,14cyclictest0-21swapper/320:40:323
31373996529,14cyclictest0-21swapper/320:40:323
219499650,7rtkit-daemon0-21swapper/223:13:493
219499650,6rtkit-daemon2193-21rtkit-daemon21:21:011
219499650,6rtkit-daemon2193-21rtkit-daemon21:21:011
219499650,5rtkit-daemon723-21yum-updatesd-he22:01:373
219499650,5rtkit-daemon2193-21rtkit-daemon20:43:171
219499650,5rtkit-daemon19321-21latency_hist20:11:033
219499640,7rtkit-daemon0-21swapper/321:43:152
219499640,6rtkit-daemon26-21rcuc/219:41:053
219499640,6rtkit-daemon0-21swapper/222:41:123
219499640,5rtkit-daemon5059-21iostat_ios22:51:203
219499640,5rtkit-daemon24212-21ssh22:33:133
219499640,5rtkit-daemon0-21swapper/219:41:203
219499640,4rtkit-daemon2193-21rtkit-daemon18:36:221
219499640,4rtkit-daemon0-21swapper/222:20:583
3137399634,51cyclictest0-21swapper/323:42:173
3137299638,42cyclictest0-21swapper/222:01:292
275502633,53sleep00-21swapper/020:26:030
219499630,5rtkit-daemon26718-21ssh20:23:252
3137299623,49cyclictest0-21swapper/222:06:262
219499620,6rtkit-daemon0-21swapper/221:58:523
219499620,6rtkit-daemon0-21swapper/221:58:523
219499620,5rtkit-daemon0-21swapper/221:40:073
219499620,5rtkit-daemon0-21swapper/220:21:253
72662614,13sleep00-21swapper/018:36:270
3136999614,48cyclictest0-21swapper/021:41:300
31369996134,15cyclictest1159-21ssh22:01:260
219499610,4rtkit-daemon2193-21rtkit-daemon19:01:591
3137399604,22cyclictest0-21swapper/323:36:103
3137199604,49cyclictest0-21swapper/121:33:001
219499600,6rtkit-daemon0-21swapper/323:16:412
219499600,6rtkit-daemon0-21swapper/323:16:412
219499600,5rtkit-daemon2193-21rtkit-daemon18:51:071
322212593,12sleep20-21swapper/222:45:342
3137399594,36cyclictest0-21swapper/323:21:253
31373995939,12cyclictest24698-21crond21:50:583
31373995935,18cyclictest8828-21latency_hist18:41:073
31373995934,19cyclictest0-21swapper/323:19:123
31373995934,19cyclictest0-21swapper/323:19:123
31373995920,23cyclictest0-21swapper/322:13:293
3136999595,32cyclictest0-21swapper/022:11:190
3136999594,47cyclictest0-21swapper/023:36:070
31369995920,21cyclictest0-21swapper/021:28:300
219499590,6rtkit-daemon0-21swapper/320:11:412
219499590,6rtkit-daemon0-21swapper/319:18:282
219499590,6rtkit-daemon0-21swapper/319:18:282
3137399585,33cyclictest0-21swapper/319:21:283
3137399584,45cyclictest0-21swapper/323:26:083
31373995839,12cyclictest1401-21missed_timers22:46:223
31373995811,30cyclictest0-21swapper/321:06:243
3137299585,36cyclictest0-21swapper/223:28:412
219499580,6rtkit-daemon0-21swapper/321:56:072
219499580,6rtkit-daemon0-21swapper/321:56:072
219499580,6rtkit-daemon0-21swapper/320:58:242
219499580,6rtkit-daemon0-21swapper/320:31:402
219499580,5rtkit-daemon2193-21rtkit-daemon23:38:181
219499580,4rtkit-daemon14874-21ssh23:06:042
208702583,49sleep00-21swapper/022:29:080
158122583,8sleep015850-21ssh23:06:170
3137399575,44cyclictest0-21swapper/323:06:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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