diff options
| author | Jason Evans <je@fb.com> | 2012-02-13 12:36:11 -0800 |
|---|---|---|
| committer | Jason Evans <je@fb.com> | 2012-02-13 12:36:11 -0800 |
| commit | 0fee70d718b9846cfab04225dc86a4b4216b963f (patch) | |
| tree | 9d63b65a61fe7ff3ba5a60f37d9afb1b0ae806fb /INSTALL | |
| parent | 6ffbbeb5d60bdf16e15927cb1f173376fe355449 (diff) | |
| download | jemalloc-0fee70d718b9846cfab04225dc86a4b4216b963f.tar.gz | |
Do not enable lazy locking by default.
Do not enable lazy locking by default, because:
- It's fragile (applications can subvert detection of multi-threaded
mode).
- Thread caching amortizes locking overhead in the default
configuration.
Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -128,8 +128,8 @@ any of the following arguments (not a definitive list) to 'configure': a measurable impact on performance, since the compiler is forced to load the page size from memory rather than embedding immediate values. ---disable-lazy-lock - Disable code that wraps pthread_create() to detect when an application +--enable-lazy-lock + Enable code that wraps pthread_create() to detect when an application switches from single-threaded to multi-threaded mode, so that it can avoid mutex locking/unlocking operations while in single-threaded mode. In practice, this feature usually has little impact on performance unless |