diff options
| -rw-r--r-- | lz4diff/lz4patch.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lz4diff/lz4patch.cc b/lz4diff/lz4patch.cc index 9de6d580..17fd8a23 100644 --- a/lz4diff/lz4patch.cc +++ b/lz4diff/lz4patch.cc @@ -172,10 +172,14 @@ bool bspatch(std::string_view input_data, bool puffpatch(std::string_view input_data, std::string_view patch_data, Blob* output) { + // Cache size has a big impact on speed of puffpatch, use a default of 5MB to + // match update_engine behavior. + static constexpr size_t kPuffPatchCacheSize = 5 * 1024 * 1024; return puffin::PuffPatch(std::make_unique<StringViewStream>(input_data), puffin::MemoryStream::CreateForWrite(output), reinterpret_cast<const uint8_t*>(patch_data.data()), - patch_data.size()); + patch_data.size(), + kPuffPatchCacheSize); } std::vector<CompressedBlock> ToCompressedBlockVec( |