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| author | Akilesh Kailash <akailash@google.com> | 2022-08-04 15:51:49 +0000 |
|---|---|---|
| committer | Akilesh Kailash <akailash@google.com> | 2022-08-12 20:53:32 +0000 |
| commit | 06b537addaaa2c40d24a5b9a89206149b377edc8 (patch) | |
| tree | 1f4d83f8c0e3486bb7747191cb911779600db126 /code_coverage/empty_policy | |
| parent | 6e48a1e5797a91a170ad898239c788b03e39c039 (diff) | |
libsnapshot: Store index of COW ops vector
Using vector + unordered_map to retrieve the index in
a COW op vector consumes significant memory; this
is a problem especially when there are hundreds
of thousands of operations.
Instead, just store the index of the COW op vector
during pre-processing.
On Pixel, peak memory usage when all the partitions
are mapped:
Without patch:
RssAnon: 118804 kB
With path:
RssAnon: 55772 kB
Additionally, post OTA reboot, memory usage further goes
down as the partition merge completes.
Bug: 237490659
Test: OTA on Pixel
Ignore-AOSP-First: cherry-pick from aosp
Signed-off-by: Akilesh Kailash <akailash@google.com>
Change-Id: Icc68a9688ceb89572821cee2dac689779f5e7c11
Diffstat (limited to 'code_coverage/empty_policy')
0 files changed, 0 insertions, 0 deletions