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2024-07-21 - 07:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #1

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.

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 100 highest latencies:
System rack0slot1s.osadl.org (updated Sun Jul 21, 2024 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1664399126126,0cyclictest1725250irq/36-eth1-rx-20:38:081
1668199124124,0cyclictest1725250irq/36-eth1-rx-23:20:087
1666899124123,1cyclictest0-21swapper/520:38:085
1664399120119,0cyclictest1725250irq/36-eth1-rx-20:08:081
1663299119118,1cyclictest0-21swapper/023:52:080
1666899117116,1cyclictest0-21swapper/520:08:085
1666099116116,0cyclictest1725250irq/36-eth1-rx-19:29:094
1663299113111,1cyclictest0-21swapper/023:49:080
1665699108108,0cyclictest0-21swapper/321:24:093
1664399104103,0cyclictest1725250irq/36-eth1-rx-23:43:081
1666899101100,1cyclictest0-21swapper/523:43:085
166569910098,2cyclictest1725250irq/36-eth1-rx-00:03:083
16681999897,1cyclictest0-21swapper/720:52:097
16656999896,2cyclictest1725250irq/36-eth1-rx-20:23:093
16656999896,2cyclictest1725250irq/36-eth1-rx-20:23:093
16656999796,1cyclictest0-21swapper/322:42:083
16632999493,1cyclictest0-21swapper/019:29:090
16656999393,0cyclictest1725250irq/36-eth1-rx-21:33:093
16656998887,1cyclictest0-21swapper/321:06:423
16656998787,0cyclictest1725250irq/36-eth1-rx-20:16:093
16656998787,0cyclictest1725250irq/36-eth1-rx-20:16:093
16681998684,1cyclictest0-21swapper/722:47:087
16656998685,1cyclictest0-21swapper/322:53:083
16660997170,1cyclictest0-21swapper/419:35:094
16656996867,1cyclictest0-21swapper/320:30:093
16643996868,0cyclictest21-21ksoftirqd/122:13:091
16668996564,1cyclictest0-21swapper/522:13:095
16643996565,0cyclictest1725250irq/36-eth1-rx-20:11:081
16643996565,0cyclictest1725250irq/36-eth1-rx-20:11:081
16656996460,4cyclictest1725250irq/36-eth1-rx-23:07:083
16643996462,2cyclictest1725250irq/36-eth1-rx-22:29:451
16660996361,1cyclictest1725250irq/36-eth1-rx-23:29:084
16668996261,1cyclictest0-21swapper/520:11:085
16668996261,1cyclictest0-21swapper/520:11:085
16668996059,1cyclictest0-21swapper/522:29:455
16649995555,0cyclictest29-21ksoftirqd/219:28:422
16681994646,0cyclictest1725250irq/36-eth1-rx-21:24:097
16632994646,0cyclictest1725250irq/36-eth1-rx-19:35:090
16643994444,0cyclictest1725250irq/36-eth1-rx-21:35:091
1638624414,27sleep00-21swapper/019:09:190
16656994341,1cyclictest0-21swapper/323:23:083
16668994241,1cyclictest0-21swapper/521:35:095
16681994038,1cyclictest0-21swapper/700:03:087
16632993938,1cyclictest0-21swapper/023:29:080
16681993735,1cyclictest0-21swapper/720:23:097
16681993735,1cyclictest0-21swapper/720:23:097
16681993535,0cyclictest1725250irq/36-eth1-rx-22:42:087
16643993535,0cyclictest1725250irq/36-eth1-rx-20:32:081
1520323514,17sleep30-21swapper/319:05:133
16681993433,1cyclictest0-21swapper/721:33:097
1630523413,18sleep20-21swapper/219:08:092
16668993332,1cyclictest0-21swapper/520:32:085
1611623313,17sleep10-21swapper/119:05:281
16674993231,1cyclictest0-21swapper/619:28:426
1638423211,18sleep70-21swapper/719:09:187
1550323211,17sleep50-21swapper/519:05:165
1535223110,17sleep40-21swapper/419:05:144
163452298,17sleep60-21swapper/619:08:456
16643992827,1cyclictest0-21swapper/122:03:091
16681992726,1cyclictest0-21swapper/720:16:097
16681992726,1cyclictest0-21swapper/720:16:097
16681992626,0cyclictest1725250irq/36-eth1-rx-21:06:427
16660992524,1cyclictest0-21swapper/421:04:094
16681992323,0cyclictest1725250irq/36-eth1-rx-22:53:087
16668992323,0cyclictest1725250irq/36-eth1-rx-22:03:095
16660991916,2cyclictest0-21swapper/421:05:164
1666899170,14cyclictest0-21swapper/522:34:535
16643991716,0cyclictest1725250irq/36-eth1-rx-21:42:421
1668199160,13cyclictest0-21swapper/700:07:087
16674991611,4cyclictest0-21swapper/623:52:386
1668199150,12cyclictest0-21swapper/722:32:537
1666899151,2cyclictest0-21swapper/500:18:385
16660991511,4cyclictest0-21swapper/419:58:084
16681991411,2cyclictest0-21swapper/721:38:537
1668199140,2cyclictest0-21swapper/723:49:237
16674991412,2cyclictest0-21swapper/621:48:236
16668991413,1cyclictest0-21swapper/521:42:425
16681991311,2cyclictest0-21swapper/720:36:537
1667499130,13cyclictest0-21swapper/623:00:186
1666099130,1cyclictest0-21swapper/420:27:534
16643991312,0cyclictest1725250irq/36-eth1-rx-23:48:081
16632991312,1cyclictest30554-21snmpd21:28:520
16632991310,1cyclictest0-21swapper/022:40:000
1668199120,11cyclictest0-21swapper/719:36:227
16674991211,1cyclictest0-21swapper/621:40:126
1666099129,3cyclictest0-21swapper/420:42:084
1666099120,11cyclictest0-21swapper/400:32:234
16656991211,1cyclictest30554-21snmpd00:34:383
1664999120,1cyclictest0-21swapper/200:18:092
16643991211,0cyclictest30554-21snmpd00:22:241
1663299127,2cyclictest0-21swapper/021:35:000
16632991211,1cyclictest30554-21snmpd23:03:530
16632991211,0cyclictest30554-21snmpd23:12:080
1663299120,9cyclictest0-21swapper/021:59:590
1663299120,11cyclictest0-21swapper/020:25:010
1663299120,11cyclictest0-21swapper/020:25:010
1668199118,2cyclictest0-21swapper/720:13:237
1668199118,2cyclictest0-21swapper/720:13:237
1667499119,2cyclictest0-21swapper/621:10:136
1664999110,1cyclictest0-21swapper/223:05:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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