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2025-10-10 - 16:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 50 highest latencies:
System rack9slot4s (updated Fri Oct 10, 2025 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
165349912621,4cyclictest0-21swapper/107:25:061
165349911901144,27cyclictest20940-21munin-run07:35:001
165339911731140,23cyclictest0-21swapper/007:25:040
159812562516,31sleep00-21swapper/007:20:300
163542524477,32sleep10-21swapper/107:23:461
16533999570,22cyclictest0-21swapper/007:34:590
61652800,3sleep16160-21unixbench_singl12:10:321
147782740,4sleep1211ktimersoftd/110:40:071
67892620,25sleep122-21ksoftirqd/112:45:191
16534996022,4cyclictest22-21ksoftirqd/111:01:191
16534995917,6cyclictest22-21ksoftirqd/110:51:351
16534995915,6cyclictest22-21ksoftirqd/111:53:121
16534995822,5cyclictest22-21ksoftirqd/109:16:341
16534995822,4cyclictest22-21ksoftirqd/111:57:071
16534995821,5cyclictest22-21ksoftirqd/112:53:361
16534995821,5cyclictest22-21ksoftirqd/110:27:431
16534995819,5cyclictest22-21ksoftirqd/110:04:491
16534995817,4cyclictest22-21ksoftirqd/109:27:141
16534995816,6cyclictest22-21ksoftirqd/109:51:541
16534995816,6cyclictest22-21ksoftirqd/109:24:281
16534995815,6cyclictest22-21ksoftirqd/111:24:151
16534995814,6cyclictest22-21ksoftirqd/109:49:561
16534995813,6cyclictest22-21ksoftirqd/112:16:561
16534995716,6cyclictest22-21ksoftirqd/111:48:021
16534995716,6cyclictest22-21ksoftirqd/110:46:341
16534995716,6cyclictest22-21ksoftirqd/110:33:091
16534995716,6cyclictest22-21ksoftirqd/109:32:001
16534995713,6cyclictest22-21ksoftirqd/111:25:051
16534995619,5cyclictest22-21ksoftirqd/111:09:581
16534995615,7cyclictest22-21ksoftirqd/111:32:041
16534995614,6cyclictest22-21ksoftirqd/111:17:231
16534995613,6cyclictest22-21ksoftirqd/112:38:041
16534995421,9cyclictest22-21ksoftirqd/112:03:221
16534995417,6cyclictest22-21ksoftirqd/109:36:071
16534995415,6cyclictest22-21ksoftirqd/112:33:521
16534995414,6cyclictest22-21ksoftirqd/110:22:591
1653499539,5cyclictest22-21ksoftirqd/112:28:551
1653499539,5cyclictest22-21ksoftirqd/112:06:211
16534995317,11cyclictest22-21ksoftirqd/110:39:531
1653499528,5cyclictest22-21ksoftirqd/110:11:531
16534995217,6cyclictest22-21ksoftirqd/110:08:331
16534995217,15cyclictest22-21ksoftirqd/109:42:241
16534995121,14cyclictest22-21ksoftirqd/111:12:021
16534995120,5cyclictest22-21ksoftirqd/110:18:591
16534995116,15cyclictest22-21ksoftirqd/109:57:101
16534995114,6cyclictest22-21ksoftirqd/109:11:481
16534995021,13cyclictest22-21ksoftirqd/111:37:251
16534995017,6cyclictest22-21ksoftirqd/107:50:171
16534995015,15cyclictest22-21ksoftirqd/112:41:251
16534995014,6cyclictest22-21ksoftirqd/110:55:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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