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2026-07-21 - 06:14

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 Tue Jul 21, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12555991034,74cyclictest28246-21fschecks_time23:20:173
12555991026,71cyclictest0-21swapper/322:05:343
12555991015,88cyclictest1227-21runrttasks20:54:373
12555991014,90cyclictest11536-21wc21:15:363
1255599994,73cyclictest21485-21df_abs23:10:153
1255199994,45cyclictest0-21swapper/023:49:490
1255599984,68cyclictest22948-21latency_hist21:35:043
1255199973,87cyclictest0-21swapper/021:40:200
1255599964,74cyclictest0-21swapper/321:02:233
12555999626,44cyclictest1227-21runrttasks23:30:453
12551999522,12cyclictest0-21swapper/019:45:070
1255599944,84cyclictest0-21swapper/321:50:233
1255599944,71cyclictest9827-21fschecks_time19:20:263
1255599944,71cyclictest9827-21fschecks_time19:20:263
1255599934,83cyclictest0-21swapper/321:45:373
1255599934,67cyclictest0-21swapper/322:00:363
1255599934,64cyclictest29270-21ssh20:55:183
1255199934,40cyclictest0-21swapper/021:48:340
1255599925,67cyclictest0-21swapper/320:40:063
1255599924,70cyclictest16717-21chrt22:14:453
1255599924,67cyclictest0-21swapper/322:55:203
12555999210,63cyclictest0-21swapper/322:52:473
1255199923,42cyclictest0-21swapper/022:00:290
12551999217,13cyclictest0-21swapper/021:55:180
1255599914,63cyclictest19342-21cpuspeed_turbos20:40:203
1255599913,62cyclictest11627-21ls23:44:593
12551999131,9cyclictest11903-21sadc20:30:050
1255599909,50cyclictest0-21swapper/320:21:303
1255599905,60cyclictest23744-21ntp_kernel_pll_20:45:353
1255599904,65cyclictest0-21swapper/323:38:013
1255599904,62cyclictest0-21swapper/320:30:233
12555999020,52cyclictest0-21swapper/322:15:143
1255599894,67cyclictest0-21swapper/322:45:313
1255599894,67cyclictest0-21swapper/322:45:313
1255599893,54cyclictest13081-21cpuspeed_turbos18:20:243
1255199893,12cyclictest0-21swapper/023:00:380
1255599885,62cyclictest0-21swapper/322:29:103
1255599884,63cyclictest0-21swapper/320:25:233
1255599883,63cyclictest0-21swapper/323:00:203
12555998812,53cyclictest2385-21ssh22:40:253
12551998822,13cyclictest0-21swapper/020:55:400
12551998821,12cyclictest0-21swapper/018:50:100
1255599875,65cyclictest0-21swapper/323:26:033
1255599875,65cyclictest0-21swapper/323:26:033
1255599874,76cyclictest29102-21gltestperf20:00:273
1255599874,61cyclictest0-21swapper/321:28:273
1255599874,61cyclictest0-21swapper/321:28:273
1255599873,61cyclictest31893-21sort22:35:343
1255599873,61cyclictest0-21swapper/321:35:283
1255599873,11cyclictest0-21swapper/319:56:363
12555998716,52cyclictest0-21swapper/322:20:293
1255599865,57cyclictest0-21swapper/323:05:473
1255599864,64cyclictest0-21swapper/321:11:403
1255599864,56cyclictest0-21swapper/321:43:233
1255199864,22cyclictest0-21swapper/023:30:190
1255599856,63cyclictest0-21swapper/321:10:023
1255599855,59cyclictest0-21swapper/323:15:233
1255599855,59cyclictest0-21swapper/321:57:063
1255599854,75cyclictest0-21swapper/322:31:063
1255599854,75cyclictest0-21swapper/321:20:253
1255599854,66cyclictest0-21swapper/323:45:333
1255599854,56cyclictest0-21swapper/318:25:233
1255199853,41cyclictest0-21swapper/022:44:050
12551998527,13cyclictest0-21swapper/021:00:290
12551998519,13cyclictest0-21swapper/022:20:240
1255599845,72cyclictest0-21swapper/319:45:343
1255599844,73cyclictest0-21swapper/319:30:383
12551998430,14cyclictest0-21swapper/022:05:200
12551998421,12cyclictest0-21swapper/022:45:300
12551998421,12cyclictest0-21swapper/022:45:300
1255599836,62cyclictest0-21swapper/319:00:223
1255599824,57cyclictest0-21swapper/320:10:063
1255599824,54cyclictest0-21swapper/319:15:213
1255599815,61cyclictest0-21swapper/319:15:093
1255599815,58cyclictest0-21swapper/320:20:073
1255599814,44cyclictest0-21swapper/319:30:083
12551998122,12cyclictest0-21swapper/019:05:310
1255599804,56cyclictest1388-21runrttasks20:10:253
1255599804,55cyclictest17917-21cpuspeed_turbos18:30:243
1255599804,54cyclictest20498-21yum19:40:423
1255599804,53cyclictest0-21swapper/318:40:443
12555998010,51cyclictest0-21swapper/319:00:083
1255599799,48cyclictest7150irq/45-ahci19:35:403
1255599784,52cyclictest0-21swapper/318:50:223
1255599784,45cyclictest0-21swapper/319:50:183
1255199783,32cyclictest0-21swapper/023:35:040
12555997635,34cyclictest25386-21sort18:45:283
1255599755,48cyclictest0-21swapper/318:35:233
1255599755,48cyclictest0-21swapper/318:35:233
1255599754,61cyclictest2835-21gltestperf19:05:283
1255599725,58cyclictest0-21swapper/318:20:113
12554996923,39cyclictest8873-21aten_r1power_po20:25:182
12554996921,41cyclictest8793-21timerandwakeup22:00:362
164582680,3sleep116471-21munin-node21:25:141
164582680,3sleep116471-21munin-node21:25:141
12554996821,38cyclictest29355-21head23:20:342
12554996716,45cyclictest0-21swapper/221:00:172
12554996710,50cyclictest0-21swapper/222:38:192
12554996614,33cyclictest0-21swapper/222:31:512
219499650,4rtkit-daemon2193-21rtkit-daemon23:11:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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