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| author | Jack Ren <jack.ren@intel.com> | 2011-11-19 09:48:03 +0800 |
|---|---|---|
| committer | Elliott Hughes <enh@google.com> | 2012-05-09 09:52:22 -0700 |
| commit | 2fd81ef71c10aecf6583facdd79f8f60f3eed678 (patch) | |
| tree | 222e5cabd3f44a359cb3e05e1eb4093087bcb3a9 /libc/tools/bionic_utils.py | |
| parent | fd95503347acba5c52d669a186ad2b161338a8a7 (diff) | |
bionic: allow the board to customize MALLOC_ALIGNMENT
Currently the dlmalloc allocates the memory with 8-byte alignment.
According to the com.aurorasoftworks.quadrant.ui.professional benchmark data:
We can get much better memory performance if we change it to be 16-byte aligned.
For example, On Nexus-S:
8-byte aligned :
1378 1070 1142 1665 1765 1163 1179 1263 1404 avg: 1336.555555556
16-byte aligned:
1691 1731 1780 1691 1671 1678 1802 1758 1780 avg: 1731.333333333
gain: 29.53%
That patch provides flexibity to customize the MALLOC_ALIGNMENT from the
board config.The macro MALLOC_ALIGNMENT defaults to 8.
To change it, please define BOARD_MALLOC_ALIGNMENT in the BoardConfig.mk:
BOARD_MALLOC_ALIGNMENT := <whatever>
Change-Id: I8da0376944a0bbcef1d0fc026bfb6d9125db9739
Signed-off-by: Jin Wei <wei.a.jin@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Signed-off-by: Beare, Bruce J <bruce.j.beare@intel.com>
Diffstat (limited to 'libc/tools/bionic_utils.py')
0 files changed, 0 insertions, 0 deletions