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2024-11-22 - 06:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Fri Nov 22, 2024 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15259210489,10sleep10-21swapper/119:07:021
1528129885,9sleep30-21swapper/319:07:203
1528528564,6sleep20-21swapper/219:07:232
171112800,1sleep2311rcuc/222:00:182
1533828068,8sleep00-21swapper/019:08:030
107292670,0sleep10-21swapper/121:33:561
71022660,0sleep10-21swapper/100:16:001
15588992625,1cyclictest0-21swapper/322:39:233
15582992524,1cyclictest0-21swapper/121:39:061
1558499240,24cyclictest0-21swapper/223:22:052
1557999240,14cyclictest0-21swapper/022:41:430
15579992117,3cyclictest13-21ksoftirqd/021:13:530
1558299200,1cyclictest0-21swapper/119:10:141
15588991817,1cyclictest0-21swapper/300:13:563
15584991815,2cyclictest0-21swapper/221:41:202
1558299181,1cyclictest10470-21/usr/sbin/munin23:05:191
1558299180,0cyclictest0-21swapper/123:22:171
1558899170,0cyclictest0-21swapper/323:50:093
1558499170,14cyclictest0-21swapper/223:48:372
1558299178,4cyclictest24677-21ssh21:20:211
1557999175,6cyclictest19593-21perf20:25:010
15579991716,1cyclictest0-21swapper/021:38:380
15584991612,3cyclictest31730-21ssh00:10:232
1558499160,15cyclictest0-21swapper/223:28:362
1558299160,1cyclictest141rcu_preempt22:11:341
1558299160,1cyclictest0-21swapper/123:48:561
1558299160,13cyclictest0-21swapper/122:33:351
1557999165,7cyclictest3877-21apache_volume23:50:100
301312150,0chrt0-21swapper/300:36:393
15584991514,1cyclictest0-21swapper/223:31:462
15584991512,2cyclictest12945-21/usr/sbin/munin22:20:212
1558499150,1cyclictest0-21swapper/222:33:202
1558499150,15cyclictest8634-21diskmemload22:19:282
1558299159,2cyclictest21563-21ntp_states22:25:201
1558299150,13cyclictest0-21swapper/122:24:021
1557999150,14cyclictest0-21swapper/021:45:110
15588991413,1cyclictest361irq_work/321:59:373
1558899141,12cyclictest16512-21grep23:10:123
15588991410,3cyclictest17636-21expr00:00:143
15588991410,2cyclictest27499-21cut21:45:153
1558499149,3cyclictest2959-21basename23:00:132
1558499145,5cyclictest224-21systemd-journal22:49:592
1558499143,8cyclictest0-21swapper/222:55:102
15584991411,2cyclictest32668-21grep22:10:282
15584991410,3cyclictest5481-21head00:15:182
1558499140,2cyclictest0-21swapper/200:21:412
15582991414,0cyclictest0-21swapper/122:55:111
1558299140,13cyclictest31762-21tr20:50:151
1558299140,12cyclictest0-21swapper/122:36:471
1557999143,6cyclictest224-21systemd-journal20:45:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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