Slow sFTP Transfer Speed with SSH Connection (SSH2)缓慢SFTP发布传输速度与ssh连接（ ssh2 ）

When using FileZille, SSH Secure Shell client, CoreFTP, PSFTP and other secure FTP clients to transfer files between computers or servers, the transfer (upload and download) speed can be very slow compared with the speed achievable by FTP connection even though there is enough fast bandwidth on network and routers.当使用filezille ， SSH的安全壳客户端， coreftp ， psftp和其他安全FTP客户端之间传输文件的电脑或伺服器，转让（上传和下载）速度可以非常缓慢相比，与加快实现由FTP连接，即使有足够的快速的网络带宽和路由器等。

Compare with FTP which transfer speeds can easily go up to a few or tens of MB/s or GB/s, transferring files with sFTP connection typically lands you at around 30 - 60 KB/s.比较与FTP ，其中传输速度可以轻松地去到一个或少数几MB /秒或Gb /秒，传输档案与网友连线，通常地政你在约30 -6 0K B的/秒。 The main reason for the reduced transmitting speed is due to the fact that SSH, or SSH2 (which both sFTP and SCP depend on) has protocol implementation and encryption overhead that based on the amount of CPU processor and memory (used in internal flow control buffers) resources given to that transfer session.主要的原因为减少传输速度，是因为事实的SSH ，或ssh2 （双方SFTP发布和SCP依赖于）议定书的执行情况和加密开销的基础上，数额的CPU处理器和内存（用于在内部流动的控制缓冲器）的资源给转让会议。 The buffers and limited availability of resources often end up become a bottleneck for network throughput of sFTP and SCP, especially on long and high bandwidth network links.该缓冲器和资源有限，往往最终成为一个瓶颈，为网络的吞吐量SFTP发布和SCP ，尤其是对长期和高带宽的网络链接。

If you only able to transfer at a ridiculous low speed of tens of KB/s, try to download and use如果你只能够转移在一个荒谬的低速数以万计的是KB / s ，尝试下载并使用 WinSCP winscp . 。 Once installed, establish a connection session to remote machine or computer by using the following settings and options:一旦安装后，建立连接会议远程机器或电脑使用下列设置和选项：

File Protocol: SCP or sFTP with Allow SCP fallback ticked文件协议： SCP的或sFTP与允许SCP的后备分
SSH Encryption cipher selection policy: Move Blowfish to the first priority slot SSH的加密密码选择的政策：提出河豚 ，以第一优先插槽

With this setting, it’s possible to get transfer speed numerous times higher than when using sFTP over SSH2 connection.与此设置，它可能得到转移速度多次高于使用时的网友超过ssh2连接。 However, it’s still slow if comparing with unencrypted and unprotected FTP transfer.然而，它仍然比较缓慢，如果与加密和保护的FTP传输。 If you don’t mind about security, FTP is the best choice.如果你不介意有关安全，的FTP是最好的选择。

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This entry was posted on Saturday, July 21st, 2007 at 10:07 am and is filed under 此项目被张贴在周六， 2007年7月21日在上午10时07分，并提交下 Tips & Tricks 提示和技巧 . 。 You can follow any responses to this entry through the 您可以按照任何的反应，此项目通过 RSS 2.0 2.0 feed. 喂养。 You can 您可以 leave a response 留下的回应 , or ，或 trackback Trackback跟踪 from your own site. 从你自己的网站。