Verified Commit 3410955d authored by Tommaso Tocci's avatar Tommaso Tocci
Browse files

performance: do not zero temporary buffer 

On C++14 make_unique function also zeroes the newly allocated buffer.

It turns out that this operation is increadibly slow for such a big
buffer. Moreover we don't need a zeroed buffer here.
parent f6f80b9b

ifs/src/preload/rpc/ld_rpc_metadentry.cpp

+1 −1
Original line number Diff line number Diff line
@@ -469,7 +469,7 @@ void rpc_send_get_dirents(OpenDir& open_dir){ 
    std::vector<char*> recv_buffers(host_size);



    // preallocate receiving buffer. The actual size is not known yet.

    auto recv_buff = std::make_unique<char[]>(RPC_DIRENTS_BUFF_SIZE);

    auto recv_buff = std::unique_ptr<char[]>(new char[RPC_DIRENTS_BUFF_SIZE]);

    const unsigned long int per_host_buff_size = RPC_DIRENTS_BUFF_SIZE / host_size;



    hg_return_t hg_ret;