When running Laravel 5.2 within a PHP-7 docker container I'm getting response times in 300ms - 400ms.

That is extremely slow although if I'm just echoing out phpinfo() on the same container the response time is 15ms - 50ms is anyone experiencing these slow response times with Laravel in a Docker container?

Okay, problem solved.

On a local development environment using Docker 1.10 with the VirtualBox driver and a volume mounted to the host system (that would be Boot2Docker VM and OSX) the performance is incredibly woeful, as described above 300ms - 600ms.

Use the same configuration without the mounted volumes 20ms - 30ms response times. My assumption is that because Laravel has intensive disk I/O due to the large amount of files it loads on each request this is impacted by how VirtualBox shares folders between the host and a VM.

Issue is not a Docker or Laravel, its a VirtualBox VM issue.

UPDATE:

Comparing differing environments in a docker

Note: the below are without artisan optimize --force or artisan config:cache

• HHVM 13ms - 31ms (TCP port 9000)
• HHVM 12ms - 22ms (Unix socket)
• PHP-7 FPM 42ms - 73ms (TCP port 9000)
• PHP-7 FPM 38ms - 55ms (Unix socket)

WOW...!

HHVM with artisan optimisations + unix sockets: 8ms - 12ms

PHP-7 FPM with artisan optimisations + unix sockets: 38ms - 42ms

Take a look at HHVM with optimizations and unix sockets. It's very fast.