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From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: man-db: crashes and possible fix
References:	<53B728EF DOT 1030402 AT cygwin DOT com>
Date:	Sat, 05 Jul 2014 06:51:04 +0200
In-Reply-To:	<53B728EF.1030402@cygwin.com> (Yaakov Selkowitz's message of "Fri, 04 Jul 2014 17:21:35 -0500")
Message-ID:	<87vbrcpfwn.fsf@Rainer.invalid>
User-Agent:	Gnus/5.13 (Gnus v5.13) Emacs/24.3.91 (gnu/linux)
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Yaakov Selkowitz writes:
> WRT mandb -c crashing or aborting:
>
> * I can reproduce this on x86_64, but not on x86.

I've had a single crash on x86, but it may have been due to BLODA since
the second run completed.

> * I can reproduce that mandb -cd doesn't crash but it doesn't complete
> successfully either; the difference being if there is a
> /var/cache/man/index.db or just a numbered file there (the PID,
> specifically).  So that is not really a solution.

On most machines, including all new installs of x86_64 during the last
week, man-db didn't crash.  The crashes I've had before cuold be
resolved by starting man-db in debug mode and the index DB is certainly
present, otherwise man wouldn't find any apropos.

> * On x86_64, increasing the stack commit size seems to help:
>
> peflags -X0x20000 /usr/bin/mandb.exe
>
> (Note that is a capital X.)

Never tried this so far.

> * Even with that, it still takes over 20 minutes to complete.

Yes, although it is about twice as fast on an SSD.

> Has anyone found differently, and does the peflags command above help?

See above, although I do an incremental rebase after each install that
also corrects PE flags (not touching the stacksize though).  New
installs get a full rebase obviously.


Regards,
Achim.
-- 
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