FW: postgres shmat request fails on win98 (cygwin)

Hello,

I will bring it up with the postgresql hackers.

PS - Sorry for the new posting. I read these via digest.
Mike

* From: Jason Tishler <jason at tishler dot net>
* To: cygwin at cygwin dot com
* Date: Sun, 8 Aug 2004 11:07:56 -0400
* Subject: Re: Initdb FATAL error shmat - Win98 Cygwin 1.5.10-3 - PostgreSQL 7.4.3
* References: <20040803133058(dot)GS31522(at)cygbert(dot)vinschen(dot)de>

Corinna,

I apologize for the delay, but I was on vacation...

On Tue, Aug 03, 2004 at 03:30:58PM +0200, Corinna Vinschen wrote:
> I tried it and it actually only happens on 9x. I found that postgres
> tries to shmat to an address which I have no idea about where it comes
> from. The problem with that address is, that it's neither a multiple
> of SHMLBA, nor does postgres call shmat with the SHM_RND flag. For
> some reason the address is ok on NT.
>
> So, Jason, do you have an idea why that happens?

No.

> Two questions come to mind:
>
> - How does postgres evaluate that address

I don't know.

> and why does it only fail on 9x?

Ditto.

> - Why does postgres use a fixed address at all, instead of using NULL
> to let the system decide which address to use?

Ditto.

I do not have access to Windows 9x and (unfortunately) have not used
PostgreSQL seriously for 3 years now, so I'm not particularly motivated
to work on this problem.

Sorry,
Jason

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