[jira] [Commented] (SSHD-135) The performance of uploading and downloading files in SFTP subsystem is very poor.

["Bobby Powers (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SSHD-135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13058671#comment-13058671 ] 

Bobby Powers commented on SSHD-135:
-----------------------------------

interesting.  We could try creating a single outputstream when SSH_FXP_OPEN is opened with a write flag, closing it on SSH_FXP_CLOSE.  Would you be interested in contributing a patch?  If not I'll take a stab at this this weekend.

> The performance of uploading and downloading files in SFTP subsystem  is very poor.
> -----------------------------------------------------------------------------------
>
>                 Key: SSHD-135
>                 URL: https://issues.apache.org/jira/browse/SSHD-135
>             Project: MINA SSHD
>          Issue Type: Improvement
>    Affects Versions: 0.5.0
>         Environment: OS: Windows 7 
> JDK:
> java version "1.6.0_26"
> Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
> Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)
>            Reporter: Liu Tao
>
> When I use  FileZilla to upload a big file to the Mina Sftpd, the speed is only 30K/S.
> The main reason is that the file is opened and closed frequently when SftpSubsystem handles SSH_FXP_WRITE message.

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