[jcifs] JCIFS WAN performance vs. Windows
moder at abv.bg
Thu Dec 11 07:32:40 MST 2014
We too are experiencing performance issues with NetApp Filer.
We were thinking that it's because NetApp Filer has a crappy SMB 1 support and also because SMB 1 is slower by design but we might be wrong.
Can you please tell me how do you know that your windows client is using SMB1? Did you disable SMB 2 and 3? Did you restart after that?
>-------- Оригинално писмо --------
>От: Mark Falk
>Относно: [jcifs] JCIFS WAN performance vs. Windows
>До: jcifs at lists.samba.org
>Изпратено на: Четвъртък, 2014, Декември 11 03:00:54 EET
>I'm working on a project which is using JCIFS to copy a single 40 MB file
>across a WAN with 70ms latency. The server is a NetApp Filer. I've tweaked
>about every parameter I can, but I can't get above 4 Mbps on Linux,
>whereas using a simple copy command on a Windows 2008R2 client I'm seeing
>30 Mbps. Both are using SMB 1.0. I've upped the MPX count and snd_buf_size
>to match Windows.
>Linux command line:
>/usr/local/java/jdk_8u5_x64/bin/java -classpath ./jcifs_1.3.17/jcifs-
>1.3.17.jar:. -Djcifs.smb.client.snd_buf_size=33028 -
>Djcifs.smb.client.maxMpxCount=50 -Djcifs.util.loglevel=3 -
>Djcifs.resolveOrder=DNS -Djcifs.smb.client.dfs.disabled=true TestJavaCopy
>Native 2008R2 client using "copy \\UNCPATH :":
>Any thoughts? Packet details available upon request.
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