[Libreoffice] --with-alloc setting
michael.meeks at suse.com
Thu Oct 6 10:04:31 PDT 2011
On Thu, 2011-10-06 at 13:45 -0300, Neil Leathers wrote:
> In running through my build settings I was trying to decide which
> value to use for --with-alloc=???.
Wow - that's a blast from the past. Intel did some work to enable
tcmalloc to be used - one of those micro-optimisations that people hope
will make things faster and often do - but only linearly.
> Currently it defaults to "internal" perhaps this should be changed to
> default to "system". If there is a good reason why "internal" is
> better then it should be documented on the wiki page. Or the trade
> offs and recommendations should be documented on the wiki.
Right - so, we should do some performance tests of characteristic
documents with the internal vs. system allocator. AFAIR the system
allocator is rather good on Linux, and terrible on Windows ;-) so
possibly we should have a platform-dependent default.
As for the tcmalloc and abcmalloc options I'd be inclined to strip them
out as cruft we can live without these days.
Is that reasonable ? I'd just do 3x timing runs for startup / document
load / exit for some reasonably large .doc, .ppt, and .xls [ chosen for
their faster, non-XML impls. by the way ].
if you use:
and remove that before running, you -should- get some nice timestamps
in it that can be used to test.
It'd be wonderful to have some new research in that area to build
better decisions on.
michael.meeks at suse.com <><, Pseudo Engineer, itinerant idiot
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