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    <body><span class="vcard"><a class="email" href="mailto:skoppisetty@apple.com" title="Suresh Koppisetty <skoppisetty@apple.com>"> <span class="fn">Suresh Koppisetty</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Don’t use the main queue to create an XPC connection as xpc_connection_set_bootstrap does a dispatch_mach_send_barrier_f on this queue which delays the sending of subsequent bootstrap message"
   href="https://bugs.webkit.org/show_bug.cgi?id=191160">bug 191160</a>
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             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">Keywords</td>
           <td>
                
           </td>
           <td>InRadar
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">CC</td>
           <td>
                
           </td>
           <td>ggaren@apple.com, skoppisetty@apple.com, webkit-bug-importer@group.apple.com
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Don’t use the main queue to create an XPC connection as xpc_connection_set_bootstrap does a dispatch_mach_send_barrier_f on this queue which delays the sending of subsequent bootstrap message"
   href="https://bugs.webkit.org/show_bug.cgi?id=191160#c10">Comment # 10</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Don’t use the main queue to create an XPC connection as xpc_connection_set_bootstrap does a dispatch_mach_send_barrier_f on this queue which delays the sending of subsequent bootstrap message"
   href="https://bugs.webkit.org/show_bug.cgi?id=191160">bug 191160</a>
              from <span class="vcard"><a class="email" href="mailto:skoppisetty@apple.com" title="Suresh Koppisetty <skoppisetty@apple.com>"> <span class="fn">Suresh Koppisetty</span></a>
</span></b>
        <pre><<a href="rdar://problem/45736262">rdar://problem/45736262</a>> Dont use main queue to create an XPC connection as xpc_connection_set_bootstrap does a dispatch_mach_send_barrier_f on this queue which delays the sending of subsequent bootstrap message

Added artraces to the above radar for further reference.

cleanRoot.artrace               - Safari root with no changes   
DefaultDispatchSafari.artrace   - Safari root with the proposed changes.        

Total Process Launch time changed from  330.49 ms to 271.58 ms
Process Launch time changed from 131.45 ms to 65.04 ms

Looks like a ~18% gain in the total process launch time and about ~50% in process launch time.</pre>
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