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2024-11-22 - 03:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #2

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 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 rack0slot2s.osadl.org (updated Fri Nov 22, 2024 00:44:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221327999444444,0cyclictest2325788-21kworker/8:1+pm23:11:128
221327499413412,1cyclictest1352-21snmpd23:11:127
221326499402401,1cyclictest1991708-21gnome-shell21:38:594
221328199397395,2cyclictest1991708-21gnome-shell00:05:599
221326199393393,0cyclictest58550irq/143-i91521:05:213
221326199388388,0cyclictest58550irq/143-i91520:55:443
221326199387386,1cyclictest58550irq/143-i91523:05:213
221326499386384,2cyclictest1352-21snmpd22:19:114
221326199381381,0cyclictest58550irq/143-i91523:21:593
221326199381381,0cyclictest58550irq/143-i91522:44:433
221326199381381,0cyclictest58550irq/143-i91521:45:323
221326199381381,0cyclictest58550irq/143-i91520:33:313
221326199381381,0cyclictest58550irq/143-i91519:56:433
221326199381381,0cyclictest58550irq/143-i91500:02:433
221326199381380,1cyclictest58550irq/143-i91523:40:593
221326199380380,0cyclictest58550irq/143-i91523:47:463
221326199380380,0cyclictest58550irq/143-i91523:31:433
221326199380380,0cyclictest58550irq/143-i91523:25:443
221326199380380,0cyclictest58550irq/143-i91523:18:443
221326199380380,0cyclictest58550irq/143-i91522:56:433
221326199380380,0cyclictest58550irq/143-i91522:51:223
221326199380380,0cyclictest58550irq/143-i91522:36:213
221326199380380,0cyclictest58550irq/143-i91522:18:443
221326199380380,0cyclictest58550irq/143-i91522:12:443
221326199380380,0cyclictest58550irq/143-i91521:25:323
221326199380380,0cyclictest58550irq/143-i91521:22:433
221326199380380,0cyclictest58550irq/143-i91521:14:543
221326199380380,0cyclictest58550irq/143-i91520:24:313
221326199380380,0cyclictest58550irq/143-i91520:06:423
221326199380380,0cyclictest58550irq/143-i91520:04:433
221326199380380,0cyclictest58550irq/143-i91519:54:203
221326199380380,0cyclictest58550irq/143-i91519:47:443
221326199380380,0cyclictest58550irq/143-i91519:37:443
221326199380380,0cyclictest58550irq/143-i91519:28:433
221326199380380,0cyclictest58550irq/143-i91519:24:423
221326199380380,0cyclictest58550irq/143-i91519:14:433
221326199380380,0cyclictest58550irq/143-i91500:37:433
221326199380380,0cyclictest58550irq/143-i91500:26:443
221326199380380,0cyclictest58550irq/143-i91500:15:433
221326199379379,0cyclictest58550irq/143-i91523:59:213
221326199379379,0cyclictest58550irq/143-i91523:35:533
221326199379379,0cyclictest58550irq/143-i91523:00:533
221326199379379,0cyclictest58550irq/143-i91522:30:533
221326199379379,0cyclictest58550irq/143-i91522:08:443
221326199379379,0cyclictest58550irq/143-i91522:03:443
221326199379379,0cyclictest58550irq/143-i91521:40:533
221326199379379,0cyclictest58550irq/143-i91521:35:433
221326199379379,0cyclictest58550irq/143-i91521:32:213
221326199379379,0cyclictest58550irq/143-i91520:36:593
221326199379379,0cyclictest58550irq/143-i91500:32:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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