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| author | Jani Taskinen <jani@php.net> | 2007-07-19 13:57:06 +0000 |
|---|---|---|
| committer | Jani Taskinen <jani@php.net> | 2007-07-19 13:57:06 +0000 |
| commit | 5778b43e2f7292c39a78f9e6cfc38f9b30ef4a59 (patch) | |
| tree | f7ec7cbbf897d87316dcb377d3d5d7c4811364b9 /Zend/README.ZEND_MM | |
| parent | 0dcd530e229b1654e4e7ec7c60bdb268588b02a7 (diff) | |
| download | php-git-5778b43e2f7292c39a78f9e6cfc38f9b30ef4a59.tar.gz | |
Beautify and reword a bit.
Diffstat (limited to 'Zend/README.ZEND_MM')
| -rw-r--r-- | Zend/README.ZEND_MM | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/Zend/README.ZEND_MM b/Zend/README.ZEND_MM index 0825e08b40..cf9a9b7e83 100644 --- a/Zend/README.ZEND_MM +++ b/Zend/README.ZEND_MM @@ -1,13 +1,34 @@ -The goal of the new memory manager (PHP 5.2 and later) is reducing memory allocation overhead and speedup memory management. +Zend Memory Manager +=================== -The new manager's "configure" has no "--disable-zend-memory-manager" option, but it has "--enable-malloc-mm" instead. It is enabled by default in DEBUG build and disabled by default in RELEASE built. It allows select malloc/emalloc at runtime. So you can use internal and external memory debuggers without recompilation. +General: +-------- -$ sapi/cli/php -r 'leak();' +The goal of the new memory manager (available since PHP 5.2) is to reduce memory +allocation overhead and speedup memory management. -$ USE_ZEND_ALLOC=0 valgrind --leak-check=full -r 'leak();' +The new manager's "configure" has no "--disable-zend-memory-manager" option, +but it has "--enable-malloc-mm" instead. It is enabled by default in DEBUG +build and disabled by default in RELEASE build. when enabled it allows selecting +between malloc and emalloc at runtime so you can use internal and external memory +debuggers without recompilation. -The patch allows tweaking memory manager with ZEND_MM_MEM_TYPE and ZEND_MM_SEG_SIZE environment variables. Default values are "malloc" and "256K". Dependent on target system you can also use "mmap_anon", "mmap_zero" -and "win32" storage managers. +Debugging: +---------- -$ ZEND_MM_MEM_TYPE=mmap_anon ZEND_MM_SEG_SIZE=1M sapi/cli/php +Normal: + $ sapi/cli/php -r 'leak();' + +Zend MM disabled: + + $ USE_ZEND_ALLOC=0 valgrind --leak-check=full sapi/cli/php -r 'leak();' + +Tweaking: +--------- + +The Zend MM can be tweaked using ZEND_MM_MEM_TYPE and ZEND_MM_SEG_SIZE environment +variables. Default values are "malloc" and "256K". Dependent on target system you +can also use "mmap_anon", "mmap_zero" and "win32" storage managers. + + $ ZEND_MM_MEM_TYPE=mmap_anon ZEND_MM_SEG_SIZE=1M sapi/cli/php ..etc. |