Hi Duan, I think that you should post the patch to xen-devel too.
Best regards, Kan Tue, 21 Aug 2007 14:58:21 +0800, "Duan, Ronghui" wrote: >Hi > >In current changeset.,qemu copy data uses memcpy_words, which copies 4 >bytes at once if the length is larger than 4. This causes unaligned >reference and leads to a performance downgrade. The issue met in rtl8139 >emulator. This patch fixes it. > > > >Send Package from guest > >Version size speed time > >Original 226MB 1.3MB/s 2:54 > >memcpy 226MB 2.8MB/s 1:22 > >Receive Package > >Version size speed time > >Original 226MB 1.7MB/s 2:10 > >memcpy 226MB 6.0MB/s 38 s > > > >Thanks > > > >Signed-off-by: Duan Ronghui [EMAIL PROTECTED] > > > > > > >-------------------------------text/plain------------------------------- >_______________________________________________ >Xen-ia64-devel mailing list >[email protected] >http://lists.xensource.com/xen-ia64-devel _______________________________________________ Xen-ia64-devel mailing list [email protected] http://lists.xensource.com/xen-ia64-devel
