[Boost-users] Bad performance over UDP and ASIO

Subject: [Boost-users] Bad performance over UDP and ASIO
From: Vadim Shmelev (vadim.shmelev_at_[hidden])
Date: 2008-12-19 04:39:07

Good day.

I'm developing an application that transfer video data and there is problem with transfer big data chunk (~600 Kb) over UDP. Data processing consumes 50% CPU and performance is not good ( i need transfer 25 chunks in sec, but really there is about 18). 
Below is code snippet:

.......

// Get video data chunk
void Receive(ISample* pSample)
{
     // Divide chunk on RTP packets
     IPacketIterator* iter = m_accessor->GetIterator(pSample);
     SendDatagram(iter);
}

// Send datagram
void SendDatagram(IPacketIterator* iter)
{
    if (iter->IsValid())
    {
        IProtocolPacket* packet = iter->Next();

        std::vector<asio::const_buffer> buffs(2);
        buffs.push_back(asio::const_buffer(packet->GetHeader(), packet->GetHeaderSize());
        buffs.push_back(asio::const_buffer(packet->GetBody(), packet->GetBodySize());

        m_socket.async_send_to(buffs, m_endpoint,
            boost::bind(&CChannel::handle_send, this, iter,
            placeholders::error, placeholders::bytes_transferred);
    }
    else
    {
        // Query next chunk
        ........
    }
}

void handle_send(IPacketIterator* iter, const boost::system::error_code& error, size_t bytes_trans)
{
    if (!error)
        SendDatagram(iter);
}

Anyone can help me with that problem?

Best regards,
Vadim