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List:       kde-bugs-dist
Subject:    [Bug 109861] valgrind freezes on start/exit of valgrind itself
From:       Tom Hughes <tom () compton ! nu>
Date:       2005-07-31 10:46:42
Message-ID: 20050731104642.27641.qmail () ktown ! kde ! org
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http://bugs.kde.org/show_bug.cgi?id=109861         




------- Additional Comments From tom compton nu  2005-07-31 12:46 -------
Created an attachment (id=12010)
 --> (http://bugs.kde.org/attachment.cgi?id=12010&action=view)
Patch to restrict client address space to 16Gb

Try this patch - it will restrict the client address space to 16Gb (hopefully
that is enough for you?) which will make the problem maps and unmaps much
smaller and hopefully speed things up.

Because the first 16Gb of memory is the bit which memcheck can handle
efficiently this ought to mean that a PIE build won't be quite as slow either.

It doesn't seem to have had as much effect on the memcheck slowdown as I hoped
though - the test suite takes 2m02 in non-PIE mode and 6m16 in PIE mode with my
patch (versus 8m49 in PIE mode without the patch).
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