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Re: Cygserver 100% CPU (was: References to both cygwin1.dll and msvcrt.dl
- From: Patrick Samson <p_samson at yahoo dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 30 Sep 2004 07:08:07 -0700 (PDT)
- Subject: Re: Cygserver 100% CPU (was: References to both cygwin1.dll and msvcrt.dl
Sigh,
Just after this post, I ran into the hang.
So pgAdmin II is no better, may be just a little
more difficult to fire the hang.
Still searching ...
--- Patrick Samson wrote:
>
> > Special note for Postgresql users:
> > So far I can only reproduce this problem if these
> > 3 conditions are met:
> > - many connections (20, 25, 27) doing a simple
> > SELECT
> > - a script running SELECT, CREATE/DROP TABLE/INDEX
> > ...
> > - a pgAdmin III connected (but without activity)
> > (Postgresql version 7.3.6)
>
> Doesn't fail by just changing pgAdmin III with
> pgAdmin II.
> What's the difference?
> III tries first to talk in protocol V3 with the PG
> backend. If the backend doesn't understand this
> version, which the case for v7.3.6,
> pgAdmin falls back to protocol V2 and things go on.
> We can see it in the PG log with:
> FATAL: unsupported frontend protocol
>
> Does it mean that the backend did something wrong
> with the IPCs when refusing V3 ...?
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