On Tue, Jul 28, 2015 at 9:52 AM, Dennis Luehring <dl.so...@gmx.net> wrote: > (i've posted the question already on qemu-disc...@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
