Hi Jan.

On Tue, 9 Jul 2013 10:22:48 +0200
Jan Stary <h...@stare.cz> wrote:

> > mount \\192.168.2.108\usr\src\media H:
> 
> Details matter. Is this NFS2/NFS3? Is this a tcp/udp mount?
> mount_nfs (as we know it on BSD) offers quite a few options
> that can make a difference. Does the Win client have any
> options?
> 
> In particular, being a video server, I suppose the Win client
> does long sequential reads. I remember -r speeding it up.

The options I know of, are on Microsoft Technet [1], no -r option.
Only read and write buffer size, time out, retry, soft or hard
mount and some file access and encoding options.
The netdrive properties of H: as mounted above give me:
read and write buffer size 32768 bytes (max), time out 0.8, retry 1, 
soft mount and NFS3. 

I tried with many different read and write sizes but no real
improvements. 

> Is your NFS mount a TCP mount?

Client was set to UDP, but I also tested it with TCP and TCP+UDP.
TCP seems to be slower for Avid, I got more hangs there.

> It would be my wild guess that the NFS is your bottleneck
> (rather than the hardware). Try various (NFS) mount options.

nfsd(8) on openbsd only has 4 options. In sysctl you only can set
vfs.nfs.iothreads to max 20. And I don't know which other sysctl
variables also affects nfsd. On windows side there is the read/write
buffer which defaults to its max. And TCP/UDP, where UDP seems better.

>       Jan
> 
> 
> BTW,
> 
> (1) why are you poluting a standardized directory like /usr/src
> with something like /usr/src/media, serving videos?

I had to recompile the kernel, and my 2G system drive is slow and
loud. So I changed the mount point of my softraid from /media to
/usr/src and made a media folder for my video files. Simply a
workaround for silent and proper compiling and testing your patch.

> (2) why are you "exporting" /home/phancy/www to /var/www/htdocs,
> on your 2G wd0 disk?

Want to stay on current, but also everytime a clean install.
So all my data lives in my home directory (backup simpler)
also my webpage, which is exported with nfs to the 'right' htdocs
directory. With a simple backup script, an install.site, rc.firsttime
and siteXX.tgz, staying on current feels like just a long reboot.
 
Thanks for your help!

Best,
Sebastian.

[1] http://technet.microsoft.com/en-us/library/cc754350.aspx


-- 
Sebastian Neuper <pha...@gmx.de>

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