enabling xdebug remote debug makes apache server very slow

Question

If I enable xdebug by settting xdebug.remote_enable=1, the apache server becomes very slow; once I change the setting to 0, it\'s normal.

I

Answer 1

For me I had

xdebug.remote_connect_back = 1

which slowed everything and stopped remote debugging from working. Once I remove it, everything works fine.