Below is a ring buffer sample from SQL 2014 Enterprise. The majority of the time is SSPI time for Windows Authentication, but I am curious if anyone knows exactly what is happening during login in the section highlighted below:[code="xml"]<?xml version="1.0" encoding="UTF-8"?><Record id="258575" type="RING_BUFFER_CONNECTIVITY" time="13564458048"> <ConnectivityTraceRecord> <RecordType>LoginTimers</RecordType> <Spid>88</Spid> <SniConnId>4D288781-7495-4007-BAE9-BD3FB0A04D83</SniConnId> <ClientConnectionId>F22D0AFE-B321-4B99-B429-5A3F43D52C5A</ClientConnectionId> <SniConsumerError>17830</SniConsumerError> <SniProvider>7</SniProvider> <State>107</State> <RemoteHost><![CDATA[10.168.122.183]]></RemoteHost> <RemotePort>63521</RemotePort> <LocalHost><![CDATA[10.168.121.188]]></LocalHost> <LocalPort>1433</LocalPort> <RecordTime>12/10/2015 17:22:15.80</RecordTime> <TdsBufInfo> <InputBufError>10054</InputBufError> <OutputBufError>0</OutputBufError> <InputBufBytes>0</InputBufBytes> </TdsBufInfo> <LoginTimersInMilliseconds> <TotalTime>2297</TotalTime> <EnqueueTime>0</EnqueueTime> <NetWritesTime>0</NetWritesTime> <NetReadsTime>0</NetReadsTime> <Ssl> <TotalTime>4</TotalTime> <NetReadsTime>2</NetReadsTime> <NetWritesTime>0</NetWritesTime> <SecAPITime>1</SecAPITime> <EnqueueTime>0</EnqueueTime> </Ssl> <Sspi> <TotalTime>2292</TotalTime> <NetReadsTime>2</NetReadsTime> <NetWritesTime>0</NetWritesTime> [highlight]<SecAPITime>2290</SecAPITime>[/highlight] <EnqueueTime>0</EnqueueTime> </Sspi> <TriggerAndResGovTime>0</TriggerAndResGovTime> </LoginTimersInMilliseconds> </ConnectivityTraceRecord> <Stack> <frame id="0">0X00007FFB4652EC33</frame> <frame id="1">0X00007FFB46533BDE</frame> <frame id="2">0X00007FFB45A68107</frame> <frame id="3">0X00007FFB45A68B9B</frame> <frame id="4">0X00007FFB45BC5DCD</frame> <frame id="5">0X00007FFB45BC5B08</frame> <frame id="6">0X00007FFB45BBA28B</frame> <frame id="7">0X00007FFB3ED84780</frame> <frame id="8">0X00007FFB3ED84547</frame> <frame id="9">0X00007FFB3ED84216</frame> <frame id="10">0X00007FFB3EDA53DF</frame> <frame id="11">0X00007FFB3EDA5530</frame> <frame id="12">0X00007FFB3EDA54B9</frame> <frame id="13">0X00007FFB3EDA5D48</frame> <frame id="14">0X00007FFB517E15CD</frame> <frame id="15">0X00007FFB53F943D1</frame> </Stack></Record>[/code]
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