Re: single task postgresql

Oleg Bartunov wrote:
>
> we have to support earlier windows which have no shared memory support.

I'm pretty sure it could a configuration option then. Using a file is just
plain stupid. "Every" version of Windows has supported shared memory in one
form or another.

What version are you wishing to support which the cygwin guys claim does not
have shared memory?

I'm prety sure I can write a shared memory interface for Windows which should
work across all "supported" versions.

(BTW I have been a Windows developer since version 1.03.)

>
> On Tue, 26 Feb 2002, mlw wrote:
>
> > Oleg Bartunov wrote:
> > >
> > > Having frustrated with performance on Windows box I'm wondering if it's
> > > possible to get postgresql optimized for working without shared memory,
> > > say in single-task mode. It looks like it's shared memory emulation on disk
> > > (by cygipc daemon) is responsible for performance degradation.
> > > In our project we have to use Windows for desktop application and it's
> > > single task, so we don't need shared memory. In principle, it's possible
> > > to hack cygipc, so it wouldn't emulate shared memory and address calls
> > > to normal memory, but I'm wondering if it's possible from postgres side.
> > >
> > > Regards,
> >
> > How does cygwin do shared memory on Windows? Windows support real shared
> > memory, surely the cygwin guys are using "real" shared memory. Are you sure
> > that this is the problem? If so, might we not be able to use a few
> > macros/#ifdefs to do it right?
> >
> > I'll be up for that if you guys don't mind some "ifdef/endif" stuff here and
> > there.
> >
>
> Regards,
> Oleg
> _____________________________________________________________
> Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
> Sternberg Astronomical Institute, Moscow University (Russia)
> Internet: oleg(at)sai(dot)msu(dot)su, http://www.sai.msu.su/~megera/
> phone: +007(095)939-16-83, +007(095)939-23-83