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Re: [Qemu-devel] [PATCH for 2.6] wxx: Fix broken TCP networking (regress

From: Michael Fritscher
Subject: Re: [Qemu-devel] [PATCH for 2.6] wxx: Fix broken TCP networking (regression)
Date: Fri, 15 Apr 2016 11:35:37 +0200
User-agent: SquirrelMail/1.4.23 [SVN]

Hello Samuel,
> @Ipv6: I'll test it tomorrow.

Interesting results:

On my native windows builds with msys2 and mingw64, a time wget
http://www.heise.de gives me (tested under native Win7)
real 0m24.081s
user 0m2.313s
sys 0m9.620s


real 0m52.250s
user 0m3.647s
sys 0m21.117s

The results are quite the same for IPv4+IPv6 or IPv4 only.

Interestingly, they are working fine under Ubuntu Wine!

Stefan Weil builds (he has made a RC3 build in which the fix is applied)
is a lot faster - tested under native Win7:

real 0m2.581s
user 0m0.227s
sys 0m0480s

My cross builds built with Ubuntu and mingw64 are ok as well (tested under
wine)! I can't test them under Windows, because I got problems with the
vnc viewer...

The qemu command line is
qemu-system-x86_64.exe -m 512 --cdrom
-netdev user,id=mynet0,restrict=n -device e1000,netdev=mynet0

A simple openssl speed aes shows roughly the same numbers on both builds.

My configure command: ./configure --target-list=x86_64-softmmu
--enable-sdl --extra-cflags=-mthreads


Stefan build  + Windows 7 64 = ok
Native MSYS build + Windows 7 64= slow
Native MSYS build + Ubuntu + Wine = ok
My MingW build + Ubuntu + Wine = ok
My MingW build + Windows 7 = (not testable)

You find my builds under
http://mifritscher.de/austausch/qemu/qemu_msys2.zip and
http://mifritscher.de/austausch/qemu/qemu-linux-mingw64.tar.gz .

Best regards,
Michael Fritscher

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