Description
| Q | A |
|---|---|
| Bug report? | no |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 4.0 |
We're so close to 4.0 release that I wanted to analyze its performance in comparison with 3.3. If my profiles are correct, then I'm disappointed because Symfony 4.0 is significantly slower, both at dev and prod.
Context
The analyzed application was Symfony Demo. I used master branch for Symfony 3.3.9 and symfony/demo#673 for Symfony 4.0 beta2.
I executed rm -fr var/cache/* and composer dump -o and restarted my web server before each benchmark (3.3.9 dev, 3.3.9 prod, 4.0 beta2 dev 4.0 beta2 prod).
The environment was PHP 7.1, Apache, SSD disk, OPCache enabled, Xdebug disabled, native PHP (no Docker or VM).
Results for PROD environment
(differences are from 3.3 to 4.0; positive values means worse performance)
| Page | URL | Time difference | Memory difference | Comparison profile |
|---|---|---|---|---|
| Home | / |
+17% | +4% | Details |
| Blog index | /en/blog/ |
+8% | +0% | Details |
| Blog show | /en/blog/posts/lorem-ipsum-dolor-sit-amet-consectetur-adipiscing-elit |
+12% | +1% | Details |
| Backend index | /en/admin/post/ |
+16% | +0% | Details |
| Backend edit | /en/admin/post/1/edit |
+10% | +0% | Details |
Results for DEV environment
(differences are from 3.3 to 4.0; positive values means worse performance)
| Page | URL | Time difference | Memory difference | Comparison profile |
|---|---|---|---|---|
| Home | / |
+24% | +10% | Details |
| Blog index | /en/blog/ |
+15% | +6% | Details |
| Blog show | /en/blog/posts/lorem-ipsum-dolor-sit-amet-consectetur-adipiscing-elit |
+16% | +7% | Details |
| Backend index | /en/admin/post/ |
+20% | +8% | Details |
| Backend edit | /en/admin/post/1/edit |
+17% | +6% | Details |
In the dev environment, there's an explosion of new function calls. Example:
