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First byte time grade / https
02-07-2012, 11:44 AM
Post: #10
RE: First byte time grade / https
Hi Patrick,

I am running the private instance in my machine and I face the similar problem discussed in this thread. The target first byte time is the time needed for DNS, socket and SSL negotiations + 100ms, but the value that I see in my results are not matching this formula. Thus, I always see 'F' grade for first byte time.

I ran the performance test for the url https://gmail.com through webpagetest.com and the results can be found at http://www.webpagetest.org/result/120207_KS_34SGK/. For some reason, I am not seeing the ssl negotiations time in this result. I noticed the target first byte time is not matching the total of breakdown values.

And, I also ran the performance test for the url https://gmail.com through private instance and noticed the target first byte time value is not according to the above formula.
Results from the private instance:

First Byte Time (back-end processing): 45/100
846 ms First Byte Time
300 ms Target First Byte Time

URL: https://accounts.google.com/ServiceLogin...mplcache=2
Host: accounts.google.com
IP: 74.125.53.84
Error/Status Code: 200
Start Offset: 0.527 s
DNS Lookup: 30 ms
Initial Connection: 70 ms
SSL Negotiation: 141 ms
Time to First Byte: 78 ms
Content Download: 1057 ms
Bytes In (downloaded): 15.4 KB
Bytes Out (uploaded): 1.5 KB

Also, please correct me if my understanding is wrong.

Thanks
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Messages In This Thread
First byte time grade / https - sreid - 08-10-2011, 07:32 PM
RE: First byte time grade / https - sreid - 08-11-2011, 12:04 AM
RE: First byte time grade / https - sreid - 08-11-2011, 01:39 AM
RE: First byte time grade / https - sreid - 08-11-2011, 02:00 AM
RE: First byte time grade / https - sreid - 08-11-2011, 03:19 AM
RE: First byte time grade / https - maha - 02-07-2012 11:44 AM

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