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

[Dennis Luehring <dl.soluz@gmx.net>]

(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?