 cell.
Therefore, EusLisp allows to leave a particular amount of heap unmerged to speed up cons.
This ratio is determined by <B>sys:*gc-merge*</B> parameter,
which is set to 0.3 by default.
With the larger <B>sys:*gc-merge*</B>, the greater portion of  heap is left unmerged.
This improves the performance of consing,
since buddy-cell splitting rarely occurs when conses are requested.
This is also true for every allocation of relatively small cells,
like three dimensional float-vectors.

<P>
<B>SYS:GC</B> inv