如何提高C++大数据开发中的数据流处理速度?

int linearSearch(int arr[], int n, int x)
{
    for(int i = 0; i < n; i++)
    {
        if(arr[i] == x)
            return i;
    }
    return -1;
}

int binarySearch(int arr[], int l, int r, int x)
{
    if (r >= l)
    {
        int mid = l + (r - l) / 2;

        if (arr[mid] == x)
            return mid;

        if (arr[mid] > x)
            return binarySearch(arr, l, mid - 1, x);

        return binarySearch(arr, mid + 1, r, x);
    }

    return -1;
}

#include <iostream>
#include <vector>
#include <thread>
#include <mutex>
using namespace std;

mutex mtx;

bool isPrime(int n)
{
    for(int i = 2; i <= n/2; i++)
    {
        if(n % i == 0)
            return false;
    }
    return true;
}

void findPrimes(int start, int end, vector<int>& primes)
{
    for(int i = start; i <= end; i++)
    {
        if(isPrime(i))
        {
            lock_guard<mutex> lock(mtx);
            primes.push_back(i);
        }
    }
}

int main()
{
    int start = 1;
    int end = 100;
    vector<int> primes;

    thread t1(findPrimes, start, end/2, ref(primes));
    thread t2(findPrimes, end/2 + 1, end, ref(primes));

    t1.join();
    t2.join();

    for(int prime : primes)
    {
        cout << prime << " ";
    }
    cout << endl;

    return 0;
}

#include <iostream>
#include <vector>
using namespace std;

vector<int> addVectors(const vector<int>& vec1, const vector<int>& vec2)
{
    vector<int> result(vec1.size());

    for(int i = 0; i < vec1.size(); i++)
    {
        result[i] = vec1[i] + vec2[i];
    }

    return result;
}

int main()
{
    vector<int> vec1 = {1, 2, 3};
    vector<int> vec2 = {4, 5, 6};

    vector<int> result = addVectors(vec1, vec2);

    for(int num : result)
    {
        cout << num << " ";
    }
    cout << endl;

    return 0;
}