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Re: pkg/40565: games/crafty builds, but doesn't run
The following reply was made to PR pkg/40565; it has been noted by GNATS.
From: David Holland <dholland-pbugs%netbsd.org@localhost>
Cc: pkg-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
Subject: Re: pkg/40565: games/crafty builds, but doesn't run
Date: Sun, 8 Feb 2009 19:53:16 +0000
On Fri, Feb 06, 2009 at 12:30:01PM +0000, voeltz%cip.ifi.lmu.de@localhost
> $ crafty
> unable to open book file [./book.bin].
> book is disabled
> unable to open book file [./books.bin].
> ERROR. shmget() failed, unable to allocate a shared memory segment.
> Please verify that your /proc/sys/kernel/shmmax value is
> large enough to allow allocating the amount of memory you
> are requesting. "echo 1000000000 > /proc/sys/kernel/shmmax"
> will allow a segment up to one billion bytes.
I vaguely recall from poking at crafty last summer that this error
message arises not just from the condition it describes, but several
other possible ones.
But I suspect that's not the problem. In NetBSD-4 the maximum size for
shared memory segments is part of the kernel config and compiled in.
If you haven't taken any steps to change it, the limit is 8M, which is
almost certainly not enough for crafty. So the first thing to do is
probably try increasing that limit.
(It is set with the line "options SHMMAXPGS=NNNN" in the kernel config
file. I don't remember how much crafty wants; try doubling or tripling
the default 2048 pages as a start.)
It would also be nice if the error didn't give Linux-specific
directions for adjusting the system shared memory limit, but I guess
we can't have everything.
David A. Holland
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