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From: Greg KH <greg@kroah.com>
To: Ren?? Rebe <rene@exactcode.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: MAX_USBFS_BUFFER_SIZE
Date: Wed, 1 Mar 2006 13:32:23 -0800	[thread overview]
Message-ID: <20060301213223.GA17270@kroah.com> (raw)
In-Reply-To: <200603012116.25869.rene@exactcode.de>

On Wed, Mar 01, 2006 at 09:16:25PM +0100, Ren?? Rebe wrote:
> Hi,
> 
> I wonder if:
> 
> drivers/usb/core/devio.c:86
> #define MAX_USBFS_BUFFER_SIZE   16384
> 
> is some random, or outdated limit or if there really is some code path that could
> not handle bigger URBs.
> 
> For performance reasons I would like to use bigger packages for an image
> aquisition device.

Why not just send down 2 urbs with that size then, that would keep the
pipe quite full.

thanks,

greg k-h

  parent reply	other threads:[~2006-03-01 21:32 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-01 20:16 MAX_USBFS_BUFFER_SIZE René Rebe
2006-03-01 20:53 ` MAX_USBFS_BUFFER_SIZE Oliver Neukum
2006-03-01 21:32 ` Greg KH [this message]
2006-03-01 21:42   ` MAX_USBFS_BUFFER_SIZE René Rebe
2006-03-01 21:54     ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-01 22:34       ` MAX_USBFS_BUFFER_SIZE Olivier Galibert
2006-03-01 22:41         ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-01 23:25           ` MAX_USBFS_BUFFER_SIZE Olivier Galibert
2006-03-01 23:37             ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-02  9:04       ` MAX_USBFS_BUFFER_SIZE René Rebe
2006-03-02 16:47         ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-02 16:03       ` MAX_USBFS_BUFFER_SIZE René Rebe
2006-03-02 16:47         ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-01 21:59     ` MAX_USBFS_BUFFER_SIZE Duncan Sands
2006-03-03 10:34       ` MAX_USBFS_BUFFER_SIZE Oliver Neukum
     [not found]   ` <mailman.1141249502.22706.linux-kernel2news@redhat.com>
2006-03-02 21:05     ` MAX_USBFS_BUFFER_SIZE Pete Zaitcev
2006-03-03  7:27       ` MAX_USBFS_BUFFER_SIZE René Rebe
2006-03-03 20:32         ` MAX_USBFS_BUFFER_SIZE Greg KH
2006-03-03  8:12       ` MAX_USBFS_BUFFER_SIZE Duncan Sands
2006-03-03 10:29         ` MAX_USBFS_BUFFER_SIZE Oliver Neukum

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