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Thread: RAM effect on performence of SSH tunnel, SFTP, and samba

  1. #1
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    RAM effect on performence of SSH tunnel, SFTP, and samba

    Does additional RAM make an SSH tunnel, SFTP connection, or samba share faster (independent of internet speed of either the server location or remote client)?

    Basically would a 1 GB (RAM) ssh server have the same SFTP, ssh tunnel, and samba upload and downspeeds over an equal internet or LAN connection as the same server with 8 GB of RAM?

  2. #2
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    Oct 2009
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    Ubuntu 12.04 Precise Pangolin

    Re: RAM effect on performence of SSH tunnel, SFTP, and samba

    Doubt it, especially considering the load those services exert on the server itself. If you are transferring files, you would probably get hung up with I/O before you ran into memory issues.
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  3. #3
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    Re: RAM effect on performence of SSH tunnel, SFTP, and samba

    You can test this yourself. Open two terminal windows and run top in one of them. In the other one use something like rsync to transfer a large file and watch what happens to resource utilization. Like Charles, I don't think you'll see much of a memory effect.
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  4. #4
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    Aug 2009
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    Re: RAM effect on performence of SSH tunnel, SFTP, and samba

    Same here, I don't think more RAM will affect the transfer speed. Although it's good that the minimum is 1GB.
    A faster CPU, faster hard drive and fast connection (Gigabit LAN or faster internet) will increase the transfer speed.
    CPU: SSH and SFTP uses encryption so it need more cpu cycles than regular copying.
    Faster HDD: sure do! Fast read times will make the data fly out more quickly!
    Faster Connection: you need a connection that will maximized the transfer capability of the SFTP/SAMBA server.
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