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TTFB - 3063ms on AWS EC2 Instance
10-25-2017, 03:49 AM
Post: #1
TTFB - 3063ms on AWS EC2 Instance
We recently switch out hosting from one AWS system to another one (switch the region from Asia to US-east).

The old system is very different from the current one. The old system is one EC2 instances that hosted multiple website and configure using cpanel.

This new one is having a load balancer that round robin between two instances and the websites files are hosted on a Network File System (EFS in Amazon). Instances are also connected to a Relationtional Database.

Once we switch over the hosting of one of the website to the new system. The site now takes a very long time to load (20-60+ seconds). I tried to optimize the page as much as possible (through google page insight), but the load time still takes forever.
http://www.webpagetest.org/result/171024...1/details/

I'm not sure how i can fix this issue.

I very new to server administration, so this is all very new to me.
Any advice on how I can go tackle this situation would be very helpful.

Thanks in advance.
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10-26-2017, 11:09 PM
Post: #2
RE: TTFB - 3063ms on AWS EC2 Instance
So it turn out that one of the instance had a steal time % of 90.
I rebooted it and the load time improve drastically.
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