[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [Bug 1129957] Re: Performance issue running quest image on
From: |
Jacob Kroon |
Subject: |
[Qemu-devel] [Bug 1129957] Re: Performance issue running quest image on qemu compiled for Win32 platform |
Date: |
Tue, 19 Feb 2013 09:35:56 -0000 |
For linux, the build is done by the native Fedora 18 gcc, 4.7.2
For Win32, the build is done by Fedora 18's mingw compiler, 4.7.2
Configuration for Win32 (from config.log):
# Configured with: './configure' '--disable-guest-agent' '--disable-vnc'
'--disable-werror' '--extra-cflags=-pg' '--extra-ldflags=-pg'
'--target-list=i386-softmmu' '--cross-prefix=i686-w64-mingw32-'
NOTE: debug is not enabled, since it breaks current QEMU build
(undefined references to 'ffs')
Configuration for Linux (from config.log):
# Configured with: './configure' '--disable-guest-agent' '--disable-vnc'
'--disable-werror' '--extra-cflags=-pg' '--extra-ldflags=-pg'
'--target-list=i386-softmmu' '--enable-debug' '--enable-kvm'
NOTE: although I pass --enable-kvm to configure, I haven't passed it to
qemu when running the executables
Commandline for running on Win32 (started from a Cygwin terminal) and also with
Fedora+Wine:
./qemu/i386-softmmu/qemu-system-i386w.exe -L qemu/pc-bios/ vxworks.img
Commandline for running on Fedora:
./qemu/i386-softmmu/qemu-system-i386 -L qemu/pc-bios/ vxworks.img
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1129957
Title:
Performance issue running quest image on qemu compiled for Win32
platform
Status in QEMU:
New
Bug description:
I'm seeing performance issues when booting a guest image on qemu 1.4.0
compiled for the Win32 platform.
The same image boots a lot faster on the same computer running qemu/linux on
Fedora via VmWare, and even running the Win32 exectuable via Wine performs
better than running qemu natively on Win32.
Although I'm not the author of the image, it is located here:
http://people.freebsd.org/~wpaul/qemu/vxworks.img
All testing has been done on QEMU 1.4.0.
I'm also attaching a couple of gprof logs. For these I have disabled
ssp in qemu by removing "-fstack-protector-all" and
"-D_FORTIFY_SOURCE=2" from the qemu configure script.
qemu-perf-linux.txt
================
Machine - Windows XP - VmWare - Fedora - QEMU
qemu-perf-win32.txt
=================
Machine - Windows XP - QEMU
qemu-perf-wine.txt
================
Machine - Windows XP - VmWare - Fedora - Wine - QEMU
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1129957/+subscriptions