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Base Line Time to First Byte
04-29-2011, 06:39 AM
Post: #2
RE: Base Line Time to First Byte
The initial connection time basically sets the floor for a round trip time (so the first byte time will never be able to be faster than that). The difference between the connection and first byte time is basically the time for the web server to process the request and to improve that you'll need to tune the web server (or switch) - the rest is network round trip and the only way to speed that up is with a CDN.

That said, 20ms is pretty respectable for the difference, I'm not sure I'd focus on it. You can try Nginx to see if it can respond faster. Also make sure the static files are reasonably fast to access (memory cache or SSDs are great for this). If it's on a SAN or even magnetic media that can cost a few ms to access.

The latency setting in the test configuration definetly impacts the times. The 50ms default latency for the default connectivity is directly added to the network round trip time. You can eliminate that from the testing but it's there because that's a reasonable last-mile RTT for your users.
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Base Line Time to First Byte - netentropy - 04-28-2011, 11:27 AM
RE: Base Line Time to First Byte - pmeenan - 04-29-2011 06:39 AM

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