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php – Mamp localhost resolving very slowly

Posted by: admin July 12, 2020 Leave a comment


When I make local changes to my PHP / WordPress website, the localhost does not seem to update for 20-30 minutes.

I’m on Mac OSX 10.8.4 and using MAMP Pro. I have two sites that I have created separate host entries for, let’s call them mysite1.dev and mysite2.dev.

Here is my MAMP Server configuration:

Apache: 80
MySQL: 3306
SSL: 443

I saw this article ( How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X Lion? ) on the Bonjour conflicts and edited my /private/etc/hosts file with the suggestions in this article:

  1. I changed the host names from mysite1.localhost to mysite.dev because it sounds like the conflict is with .local names – DID NOT WORK
  2. I updated the Hosts file to have separate ::1 addresses – DID NOT WORK:

    ::1 <tab> mysite1.dev
    ::1 <tab> mysite2.dev
  3. I tried putting all of my host entries onto one line – also didn’t work: localhost mysite1.dev mysite2.dev
    ::1 localhost
    fe80::1%lo0 localhost

It seems like MAMP Pro overwrites the hosts file any time I restart the server.

I would be SUPER grateful for any help you can offer.

How to&Answers:

Change MAMP cache to OPcache. It worked for me enter image description here


I had the same problem and found the solution on this post: MAMP time between seeing live changes

The instructions, which I followed:

The solution is uncommenting lines in the php.ini file, which can be found in

/{MAMP Directory}/bin/php/php5.5.3/conf/php.ini

Comment out Opcache:

;  opcache.memory_consumption=128
;  opcache.interned_strings_buffer=8
;  opcache.max_accelerated_files=4000
;  opcache.revalidate_freq=60
;  opcache.fast_shutdown=1
;  opcache.enable_cli=1

Documentation ( yes it started in 5.5 ):



I had similar problems running php 5.5.3. After I changed back to 5.4.19 it worked.

You can change the version in the MAMP GUI. You might have to rename your 5.5.3 folder to 5.5.X for 5.4.19 to show up in the GUI. The php folders are placed at: Applications/MAMP/bin/php


For me, changing back to MAMPS standard port settings did the trick.


MAMP’s default ports are non-standard. When I switched to standard ports (80 for Apache & 443 for SSL), it sped up dramatically.

I’m not sure if this is what Paul Bakker did, or if he switched the other way.

I’m using MAMP Pro 4.2, PHP 7.1.6, Apache, OS X 10.11.6.


It was really hard, but I found a solution that it works in my environment:

  • MAMP 4.2.1
  • PHP 5.6.31

SETTINGS left menu > Ports settings > Run servers as: > Change it to “Unix Users” option.

enter image description here


I’m not sure about Mamp, however, I use php -S to spin up a local server. Its response got very slow after moving to Mojave.

I was able to fix it by updating /etc/hosts file with

::1             localhost YouMacName.local       localhost YouMacName.local

You can get YourMacName.local by running in terminal:

$ hostname


I was having same issue, I had added virtual host ending with .local which was causing 5 seconds delay in lookup.

To fix this I updated host file.

sudo nano /etc/hosts

And added my site with IPv6 address along with ::1 and

::1             mysite.local       mysite.local
fe80::1%lo0     mysite.local


Changing from PHP 7 to 5 fixed mine.