Hi,
I've tested 1.45-rc6 but download performances are exactly the same. Is the
improvement related to RequestQueue?
Is there anything needed to enable it?
Upload speed is good, why download is slow? Is there any encryption overhead
on download only?
In Session.java and Request.java we can notice several Thread.sleep(10);
Could it be the problem?
BTW: Are you able to reproduce this problem?
Thanks again.
On Mon, Aug 8, 2011 at 8:50 AM, Atsuhiko Yamanaka <[email protected]> wrote:
> Hi,
>
> +-From: derek cram <[email protected]> --
> |_Date: Sun, 7 Aug 2011 12:13:37 +0200 _____
> |
> |We've made some SFTP performance tests with both JSCH 1.44 and 1.45RC5
> on
> |10MB file transfer (upload and download)
> |On a local network, results are:
> |Upload : Around 16MB/s
> |Download: Around 3MB/s
> |How to explain such difference?
>
> Such a problem had been reported on this mailing list.
> In these days, I had opportunities to invest my time to find the reasons,
> and have improved code, at last. Please try
> http://www.jcraft.com/jsch/jsch-0.1.45-rc6.zip
>
> I have implemented some functionality like "-R" option of OpenSSH's sftp
> command.
> It is helpful if you make again SFTP performance tests with that version.
>
>
> Sincerely,
> --
> Atsuhiko Yamanaka
> JCraft,Inc.
> 1-14-20 HONCHO AOBA-KU,
> SENDAI, MIYAGI 980-0014 Japan.
> Tel +81-22-723-2150
> +1-415-578-3454
> Skype callto://jcraft/
> Twitter: http://twitter.com/ymnk
> Facebook: http://facebook.com/aymnk
>
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