We got a Problem with the 220.127.116.11 Version and exporting of huge Tables oder Databases. Since we upgraded to Major-Release 4 exporting of huge Tables wont work and causes errors like
Out of memory (allocated 1270349824) (tried to allocate 629166081 bytes) in libraries/Response.class.php
Allowed memory size of 1073741824 bytes exhausted (tried to allocate 697377364 bytes) in libraries/OutputBuffering.class.php on line 114
A raw-Dump of this Table is about 578MB (very close to that 62916.. bytes), and we already tried to set memory_limit to maximum-value but it didnt help.
I suspect Output-Buffering to be a Problem, the Content of the Output-Buffer is copied on some Parts, for example in OutputBuffering.class.php
$buffer->_content = ob_get_contents(); ob_end_clean();
At the moment when ob_get_contents is called the buffer-content is hold twice times and causing memory Problems.
According to my Customer, exporting this huge Table was no Problem in phpMyAdmin 3.
Thanks for help!