2002-06-28 11:53:46

by Mala Anand

[permalink] [raw]
Subject: Re: [Lse-tech] Re: efficient copy_to_user and copy_from_user routines in Linux Kernel

Niels wrote..
>Indeed, I ordered a P4 for these tests while still at IBM but AMD boxes
are
>not available to Mala, I believe. Before I got sacked, I even bought a P4
>to test this and other things at home but I lost interest in the matter so
>never actually got around to testing.

>When I did test back in February I created a few test programs and found
>that the code generated by GCC Version 3.x and the library that came with
>RedHat 6.2 gave almost as good results as the patches Mala then had
>available. Maybe it is time to see if the compiler has improved enough to
>scrap the copy code in the kernel in favor of code as generated by the
>compiler.

I need to check this out. I don't remember getting these results from you.
If you still have them, please mail me the results and the generated
code.





Regards,
Mala


Mala Anand
E-mail:[email protected]
Linux Technology Center - Performance
Phone:838-8088; Tie-line:678-8088