Zero-copy patch

Jacky Lam jlam at
Thu Feb 10 20:47:42 MST 2011

No change is source level. I just change the test platform from x86 to MIPS. Maybe my MIPS's throughput level is CPU power and this patch helps that.

I am still investigating the problem and will send you the patch if I fix it.


> -----Original Message-----
> From: Jeremy Allison [mailto:jra at]
> Sent: Friday, February 11, 2011 11:45 AM
> To: Jeremy Allison
> Cc: Jacky Lam; Volker.Lendecke at SerNet.DE; samba-
> technical at
> Subject: Re: Zero-copy patch
> On Thu, Feb 10, 2011 at 07:42:45PM -0800, Jeremy Allison wrote:
> > On Thu, Feb 10, 2011 at 10:39:44PM -0500, Jacky Lam wrote:
> > > Jeremy,
> > >
> > >   I try again the patch on my MIPS platform and happily find that
> the throughput improves by 20%. However, I get some data corruption. I
> find there is some chance the order of two 64K data packets is reversed.
> Who is the author of this patch? Need to submit the bug to him?
> >
> > Wow - that's interesting. Why the change ?
> And in this I mean why the change from the 5% you
> originally reported to the 20% ? What changed
> between the two tests ?
> Jeremy.

This message and any attached documents contain information from ViXS Systems, Inc. and are confidential and privileged and further subject to any confidentiality agreement between the parties. The information is intended to be viewed only by the individual(s) or entity(ies) to whom the message is addressed. If you are not the intended recipient, be aware that reading, disclosing, copying, distributing or using the contents of this transmission is prohibited. Please notify us immediately if you have received this transmission in error, and delete this message along with any attached files.

More information about the samba-technical mailing list