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2024-07-27 - 14:28

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 Sat Jul 27, 2024 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
324539911621146,13cyclictest748-21kworker/1:219:26:521
322572562516,31sleep00-21swapper/019:23:320
316272484436,32sleep10-21swapper/119:20:301
3245299113104,6cyclictest0-21swapper/019:26:520
314942900,3sleep10-21swapper/122:10:261
3245299371,23cyclictest11990-21cron19:55:000
82352361,31sleep08296-21df21:10:120
217762351,4sleep021861-21/usr/sbin/munin21:45:220
32453993418,3cyclictest40950irq/93-i91500:05:421
3245299341,7cyclictest7030-21hddtemp_smartct19:40:200
3245299341,7cyclictest7030-21hddtemp_smartct19:40:200
3245299341,21cyclictest25710-21/usr/sbin/munin21:55:260
266912341,10sleep10-21swapper/120:31:341
3245399335,5cyclictest81rcu_preempt22:27:281
3245399335,17cyclictest40950irq/93-i91521:05:481
3245299337,21cyclictest81rcu_preempt22:30:000
3245299331,19cyclictest12750-21iostat19:55:220
134922331,28sleep113518-21munin-run21:25:001
32453993223,6cyclictest4070-21sh23:50:181
307642321,4sleep130766-21irqstats23:35:181
227632320,3sleep0111rcuc/023:15:120
90152311,5sleep00-21swapper/022:36:410
80682311,26sleep08086-21ntp_states00:00:300
72932311,5sleep10-21swapper/122:33:171
3245399315,4cyclictest81rcu_preempt19:36:131
3245399314,4cyclictest81rcu_preempt20:49:321
3245399312,4cyclictest81rcu_preempt00:47:461
32453993112,6cyclictest40950irq/93-i91523:20:221
32453993111,6cyclictest0-21swapper/119:49:381
32452993117,8cyclictest23734-21diskstats20:25:140
32452993114,6cyclictest3-21ksoftirqd/000:37:580
32452993111,16cyclictest31604-21grep22:10:290
194922311,4sleep019501-21iostat_ios23:05:190
137912311,4sleep113838-21cat22:50:181
70802301,5sleep00-21swapper/022:31:030
3245399305,4cyclictest81rcu_preempt20:16:291
3245399305,4cyclictest81rcu_preempt19:50:441
3245399305,3cyclictest81rcu_preempt20:41:181
3245399303,4cyclictest81rcu_preempt23:48:281
3245399302,11cyclictest32115-21wget23:40:081
32453993014,5cyclictest81rcu_preempt22:20:001
3245399301,24cyclictest19191-21df_inode23:05:131
3245299303,14cyclictest0-21swapper/000:20:240
3245299301,4cyclictest81rcu_preempt22:17:030
32452993012,5cyclictest12665-21users22:45:360
297762301,5sleep00-21swapper/023:32:370
274092301,5sleep00-21swapper/000:51:150
252062300,5sleep0111rcuc/000:45:300
229532301,5sleep10-21swapper/120:21:391
218622301,4sleep121907-21/usr/sbin/munin21:45:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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