ttfb is very high for symfony2 php project

Question

I have xampp apache runnnig on my windows 8, 64 bit laptop. With symfony 2, the TTFB is about 4 sec, on prod, for every server response and about 8-10 secs on dev. I have no idea how to reduce this to under 1 sec. It is not possible to work with such latency.

To isolate the issue I did the following 1. localhost/xampp/ loads very fast (within 1 sec) 2. localhost/ims/web/test.php loads immediately. ims is the symfony2 project. The test.php has

Please tell me how to reduce the TTFB. It does seem to be an apache issue.

Did you check where is the bottleneck in the profiler timeline? — Absalon Valdes
– Absalon Valdes, Commented Jul 25, 2015 at 20:42
I am doing web development after a very long time. From the profiler timeline I cant see the evidence that I see in the chrome dev app timeline. Please advise what all things can I check. — Rajeev Pandey
– Rajeev Pandey, Commented Jul 26, 2015 at 22:35
It seem to be Symfony/component/security/http/firewall and the controller; these two take 80% of the time. Still can't tell if the firewall is responsible for high TTFB — Rajeev Pandey
– Rajeev Pandey, Commented Jul 27, 2015 at 2:47

Absalon Valdes · Accepted Answer · 2015-07-27 03:21:38Z

0

If the firewall is using database for authenticate users maybe the bottleneck is in the database connection itself. Look at this link http://12wiki.blogspot.com/2012/11/why-does-symfony-2-firewall-take-so.html. Changing database_host from localhost to 127.0.0.1 solved the problem.

answered Jul 27, 2015 at 3:21

Absalon Valdes

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4 Comments

Rajeev Pandey Over a year ago

This is the result of a small ajax query using GET. Connection Setup TIME Stalled 1.571 ms DNS Lookup 0.898 ms Initial connection 1.025 ms Request/Response TIME Request sent 2.019 ms Waiting (TTFB) 2.07 s Content Download 1.192 ms.<br><br> I hace a very high TFTB of 2000 ms compared to the 10 ms of actual work done.

Rajeev Pandey Over a year ago

I NEED SOME SERIOUS HELP HERE. I can't do ajax with this kind of slow response. There must be a solution to this. I really appreciate anyone giving a good clue.

Rajeev Pandey Over a year ago

One more difference I noted. All the assets in DEV takes longer (php, js, css and png). In PROD environment, only the php takes longer and everything else is superfast.

Rajeev Pandey Over a year ago

I followed suggestion on the following post to bring the ttfb a tad bit lower but not much. stackoverflow.com/questions/9854848/…

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