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2025-05-02 - 12:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, slot #7

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 rackcslot7s.osadl.org (updated Fri May 02, 2025 00:44:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3224692991221,22cyclictest3312406-21taskset23:14:491
32246899910740,19cyclictest13-21ksoftirqd/022:26:520
33413122990,7sleep30-21swapper/300:35:163
32242102960,8sleep00-21swapper/019:05:290
322469299905,22cyclictest26-21ksoftirqd/123:00:251
322455429060,22sleep30-21swapper/319:09:483
322469699873,23cyclictest0-21swapper/222:48:092
3224692998717,15cyclictest26-21ksoftirqd/122:28:541
3224692998715,21cyclictest26-21ksoftirqd/123:16:341
3224692998619,51cyclictest26-21ksoftirqd/123:25:221
322469299854,60cyclictest3302403-21diskstats22:45:181
322469699842,21cyclictest0-21swapper/223:20:202
322469699832,20cyclictest0-21swapper/222:28:362
322469299828,15cyclictest26-21ksoftirqd/122:24:211
322469299824,19cyclictest26-21ksoftirqd/122:57:161
3224692998217,7cyclictest141rcu_preempt23:23:221
322469299821,15cyclictest3304566-21/usr/sbin/munin22:50:291
3224692998118,51cyclictest141rcu_preempt22:38:141
3224701998033,43cyclictest1753-21gnome-shell22:50:593
3224692998011,56cyclictest26-21ksoftirqd/122:30:311
3224701997962,5cyclictest42-21ksoftirqd/323:03:493
322469699792,8cyclictest0-21swapper/222:24:332
322469699792,19cyclictest0-21swapper/223:15:132
322469699792,18cyclictest0-21swapper/222:36:452
322469299798,18cyclictest26-21ksoftirqd/122:40:141
3224692997918,6cyclictest141rcu_preempt23:05:591
3224701997854,13cyclictest42-21ksoftirqd/322:45:203
3224701997829,45cyclictest1753-21gnome-shell23:13:133
322469699783,18cyclictest0-21swapper/222:51:372
322469699782,21cyclictest0-21swapper/222:55:292
322469699782,18cyclictest0-21swapper/223:10:382
322469699772,18cyclictest0-21swapper/223:25:272
322469699772,18cyclictest0-21swapper/222:41:002
3224689997769,5cyclictest2197014-21PK-Backend23:02:280
3224689997737,8cyclictest141rcu_preempt23:26:120
322469699762,15cyclictest141rcu_preempt23:09:212
322469699752,9cyclictest0-21swapper/222:32:192
3224689997538,8cyclictest141rcu_preempt22:55:480
3224701997464,5cyclictest42-21ksoftirqd/322:27:163
3224701997424,46cyclictest1753-21gnome-shell22:58:373
3224692997415,7cyclictest141rcu_preempt23:30:041
3224701997322,46cyclictest1753-21gnome-shell23:28:443
322470199725,6cyclictest141rcu_preempt23:22:353
322470199722,66cyclictest1753-21gnome-shell23:05:443
322469699722,15cyclictest0-21swapper/223:01:492
3224689997229,16cyclictest141rcu_preempt22:54:180
3224689997226,16cyclictest141rcu_preempt23:14:560
3224689997219,15cyclictest141rcu_preempt23:19:210
3224689997219,11cyclictest13-21ksoftirqd/022:50:020
3224689997217,43cyclictest13-21ksoftirqd/023:22:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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