Re: [coLinux-devel] Slow performance.

[Henry N. <Hen...@Ar...>]

Paolo Minazzi wrote:
> On Sat, Mar 22, 2008 at 1:01 AM, Óscar Fuentes <of...@wa...> wrote:
>> Óscar Fuentes <of...@wa...> writes:
>>
>>  > Henry Nestler <Hen...@Ar...> writes:
>>  >
>>  >> Can I download this test somethere?
>>  >
>>  > No, sorry. But I expect the same from the gcc testsuite, for instance,
>>  > as it is very similar. Compiling is slower too. It is a C++ project and
>>  > is compiled with g++ 4.1.2 in VMWare (80 seconds) and 4.1.3 in coLinux
>>  > (124 seconds).
>>
>>  This is a another good test case:
>>
>>  Building GNU Make from
>>
>>  http://ftp.gnu.org/pub/gnu/make/make-3.81.tar.gz
>>
>>            coLinux          VMWare
>>  configure: 42.2 seconds     18.7 seconds
>>  make     : 15.1 seconds      8.5 seconds
>>
>>  As mentioned on my previous message, VMWare is 6.0.0 with Debian etch as
>>  guest OS, gcc 4.1.2. coLinux is 0.7.1 with Ubuntu Gutsy, gcc 4.1.3.

            coLinux-0.7.3   native
configure:  63s             28s
make:       28s             15s

There can see, that colinux is ~50% slower as native.
I can only compair native with coLinux. Have no VMware under Windows.
CoLinux runs with 256MB of native 480MB RAM, gcc 3.3.1, both runs on
same installation (dualboot).

You wrote:
> Host machine: 49 seconds
> VMWare: 48 seconds
> andLinux: 108 seconds

There VMware is faster as native systems? That let me thing it is not
real. Or it is some kind of prefetching cache to have faster disk
access? Perhaps VMware loads some of the disk into RAM?

What is the host CPU type?

-- 
Henry N.