Chrome DNS prefetching & TCP pre-connect

Excerpts from above website:

Each browser tab in Chrome is its own isolated process, which gives us great isolation and many security benefits. 

An average DNS lookup takes 60~120ms, followed by a full round-trip (RTT) to perform the TCP handshake – combined, that creates 100-200ms of latency before we can even send the request! 

  • chrome://network-action-predictor – omnibox predictor stats (tip: check ‘Filter zero confidences’)
  • chrome://net-internals/#sockets – current socket pool status
  • chrome://net-internals#dns – Chrome’s in-memory DNS cache
  • chrome://histograms/DNS – histograms of your DNS performance
  • chrome://dns – startup prefetch list and subresource host cache

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