Re: [Qemu-devel] Debian 7.8.0 SPARC64 on qemu - anything i can do to speedup the emulation?

[Artyom Tarasenko <atar4qemu@gmail.com>]

On Tue, Jul 28, 2015 at 9:52 AM, Dennis Luehring <dl.soluz@gmx.net> wrote:
> (i've posted the question already on qemu-discuss@nongnu.org but was toled
> to better use this mailing list)
>
> i've prepared an Debian 7.8.0 image for SPARC64/qemu emulation for C/C++
> development before-real-hardware big-endian/unaligned tests
>
> i've benchmarked compiling of single pugixml.cpp
> (https://github.com/zeux/pugixml/blob/master/src/pugixml.cpp)
>
> qemu-system-sparc64: >180sek
> x64 native : ~ 2sek
>
> so my sparc64 emulation is around 90 times slower then native x64
>
> my system:
>
> using lastest qemu git 2.3.x, with virtio for harddisk/network and qcow2
> image
>
> https://depositfiles.com/files/sj20aqwp0 (~280MB
> press the "regular download" button, wait some seconds, solve the
> chapca, "download file in regular mode by browser"
>
> there is pugi_sparc.txt in the 7z which describes how to start,use and
> what is installed in the image
>
> qemu runs natively under a ubuntu 15.04 (x64), Core i7, 8GB system doing
> nothing but qemu
>
> installed is
>
> gcc/g++ 4.6
> make
> sshd running
>
> compiling cmake 2.3.2 tooked around 10h
> compiling pugixml takes also very very long
>
> "top perf" from guest and host while compiling pugixml don't show big
> blockers or something over time
> http://pastebin.com/D2fUpPrM
>
> anything i can do to speedup the emulation?

Maybe try the fresh tcg optimizer improvements from Aurelien:
https://lists.gnu.org/archive/html/qemu-devel/2015-07/msg05133.html

Artyom

-- 
Regards,
Artyom Tarasenko

SPARC and PPC PReP under qemu blog: http://tyom.blogspot.com/search/label/qemu