kireal

- Tune /etc/ssh/sshd_config

UseDNS no  # Disable DNS lookups
GSSAPIAuthentication no # Disable negotation of slow GSSAPI

don't forget to restart it, use a script provider to set it , or create it with veewee or snapshot it

- Tune Vagrantfile

    vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]

kireal

# Read more https://github.com/jpetazzo/dockvpn
# Read more http://p.umputun.com/p/2014/08/12/svoi-sobstviennyi-vpn-za-3-minuty/
CID=$(docker run -d --privileged -p 1194:1194/udp -p 443:443/tcp jpetazzo/openvpn)
docker run -t -i -p 8080:8080 --volumes-from $CID jpetazzo/openvpn serveconfig
#download configuration and run client
#echo '#!/bin/sh' > /etc/rc.local
#echo 'docker run -d --privileged -p 1194:1194/udp -p 443:443/tcp jpetazzo/openvpn' >> /etc/rc.local

kireal

docker rm $(docker ps -a | grep -v NAMES | awk '{print $1}')

kireal

docker rmi $(docker images | grep -v REPOSITORY | awk '{print $3}')

kireal

docker stop $(docker ps -a | grep -v NAMES | grep -v openvpn | awk '{print $1}')

kireal

#Server side
echo "ClientAliveInterval 60" | sudo tee -a /etc/ssh/sshd_config
# Ubuntu
service ssh restart
# CentOS
service sshd restart

#Client side
echo "ServerAliveInterval 60" >> ~/.ssh/config
echo "ServerAliveCountMax = 120" >> ~/.ssh/config

kireal

SELECT
  DatabaseName
  ,SUM(CurrentPerm)/1024/1024 AS USEDSPACE_IN_MB
  ,SUM(MaxPerm)/1024/1024 AS MAXSPACE_IN_MB
  ,SUM(CurrentPerm)/ NULLIFZERO (SUM(MaxPerm)) *100 (FORMAT 'zz9.99%') AS Percentage_Used 
  ,MAXSPACE_IN_MB- USEDSPACE_IN_MB AS REMAININGSPACE_IN_MB
FROM DBC.DiskSpace
WHERE DatabaseName = <<DatabaseName>>
GROUP BY DatabaseName;

kireal

#include <iostream>
#include <sys/time.h>                // for gettimeofday()
using namespace std;


double r2()
{
    return (double)rand() / (double)RAND_MAX ;
}

kireal

#include <vector>
#include <algorithm>
#include <iostream>
#include <sys/time.h>
#include <cstdlib>
 
using namespace std;

int main()
{

kireal

#include <vector>
#include <cstdlib>
#include <algorithm>
#include <iostream>
#include <sys/time.h>

using namespace std;

std::pair<int, int> minimax (std::vector<long long> &v)
{