linux-kernel - Re: CIFS is slooow, gvfs is fast

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Date:	Sat, 30 Oct 2010 00:33:57 +0200
From:	"J.A. Magallón" <jamagallon@....com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linux CIFS <linux-cifs@...r.kernel.org>
Subject: Re: CIFS is slooow, gvfs is fast

On Mon, 25 Oct 2010 15:44:44 +0530, Suresh Jayaraman <sjayaraman@...e.de> wrote:

> On 10/24/2010 05:00 AM, J.A. Magallón wrote:
> > On Sat, 23 Oct 2010 00:46:36 +0200, "J.A. Magall�n" <jamagallon@....com> wrote:
> > 
> >>
> >> If you mean hardware network path (cabling, router), yes.
> >> For file paths, CIFS fs is under /net/htpc/media, and gvfs uses a mount
> >> point on '~/.gvfs/media on htpc'.
> >>
> >> And here comes the weird part. To rule out the desktop environment factor,
> >> I tried a dd in both paths. On /net, I get 16.6 MB/s, and on
> >> ~/.gvfs/xxx, I just get 5.5 MB/s. I really don't understand anything...
> >> things get reversed depending if you use a gui or commandline.
> >>update
> >> Weird, really weird...
> >>
> > 
> > Well, to sort things out, I did some more tests (this does not mean things
> > get any closer to be clear for me at least...).
> > 
> > Can anybody tell me whats going here...??
> > It looks just like gui tools behave just in reverse of cli, and that a plain
> > smbclient is faster that cifs. I'm really confused...
> > 
> 
> Could you try mounting from commandline with something like
>   `mount -t cifs //server/share /mnt/point -o user=user1`
> (commenting out the fstab entry) and try copying the file?
> 
> 

Same results, cli copy takes about 7.5 seconds (thats around 40MB/s), and
gui copy says it runs at 7.8 MB/s.
This could be the normal behaviour I could expect, gui is slower as it has to
update progress bars, move flying sheets, or even does a sync from time to
time.

The misbehaviour I see is the other way aroung, FUSE/GVFS is fast from GUI
and slow from CLI. And, the best, why are there any difference ???

-- 
J.A. Magallon <jamagallon()ono!com>     \               Software is like sex:
                                         \         It's better when it's free
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