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https://issues.apache.org/jira/browse/SSHD-1049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178712#comment-17178712
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min yun law commented on SSHD-1049:
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Hi, Tsing Wang, I re-run my testing code in three different exadata machine
racks with Mina SSHD v2.5 and 5.8G zip file( all has the updated linux imaging
version, and let me named the three machines as: M1, M2, M3).
for M1, SFTP file upload take around 116s, and SCP file upload takes around
100s. SCP has a little fast than SFTP and I dont see any failure using both
sftp and scp with many times unit testing. I see some KeyEstablished events
(implemented from SessionListener) during file transfer. so SSHD v2.5 did solve
the speed issues.
for M2, it is very interesting, here is testing result:
five time using sftp as following spend time with 5.8G data: 1112s, 130s, 125s,
130s, 1080s
four time using scp as following spend time with 5.8G data: 1073s, 1065s ,
145s, 1039s
for M3, which is sad because it was my primary testing environment when I was
trying to replace Jsch with Mina SSHD since verion 2.1. With 2.5, it still
cannot pass the sftp testing, which always failed with session disconnected
with message as "reason code: 2, msg: Detected IdleTimeout after 600497/600000
ms."
When using SCP, it works using 144s for 5.8G file. that was reason I use SCP in
my project, however; sometime I saw the same issue like in SFTP that session
will disconnected uring file upload.
> comparison between SftpClient and sftp comand in Windows10
> ----------------------------------------------------------
>
> Key: SSHD-1049
> URL: https://issues.apache.org/jira/browse/SSHD-1049
> Project: MINA SSHD
> Issue Type: Question
> Affects Versions: 2.5.1
> Environment: windows10
> centos 7
> Reporter: Tsing Wang
> Priority: Minor
>
> # try with the latest version 2.5.1
> # comparison test
> ## method 1: using cmd.exe in windows, sftp username@host, then put large
> file, it displays about 70-80M/s
> ## method 2: using the performance test class in github
> (SftpPerformanceTest), cal t1-t0. for 100MB file, it takes about 5s to
> finish. So the rate will close to 20M/s - 30M/s, it do improve with old one(
> speed up about 3 times).
> the test result's throughput is about 1/3 compared with sftp command, so I am
> curious about what's limit for sftpclient.
>
> Also I setup a simple sshd server in target linux machine, the upload rate is
> also about 1/3. I wonder what's expect for sftp performance.
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