Bitnami apache + php-fpm stack can't disable buffer

Question

I'm trying to get my service running that requires it output without a buffer. Is it possible to use php-fpm without a buffer with apache?

<IfDefine USE_PHP_FPM> <Proxy "unix:/opt/bitnami/php/var/run/public.sock|fcgi://public-fpm" timeout=300> </Proxy> </IfDefine> <Directory "/var/www/public"> Options +MultiViews +FollowSymlinks AllowOverride All <IfVersion < 2.3 > Order allow,deny Allow from all </IfVersion> <IfVersion >= 2.3> Require all granted </IfVersion> <IfDefine USE_PHP_FPM> <FilesMatch \.php$> SetHandler "proxy:fcgi://public-fpm/" </FilesMatch> </IfDefine> </Directory> 

I've made sure to disable mod_deflate and output_buffering. I'm using this script to test:

<?php ob_end_clean(); ob_implicit_flush(true); out("Starting"); flush(); function out($string) { echo $string . PHP_EOL; } $i = 0; while ($i++ < 100) { out($i); flush(); sleep(1); } out("Done"); 

Answer 1

I continued digging until I found that mod_pagespeed was enabled! Disabling mod_pagespeed solved the issue.