On Sun, 2 Oct 2011 10:20:47 +0200 Henri Beauchamp <sl...@free.fr> wrote:
> Really, the only true motivation behind the use of tcmalloc in mesh > viewers (it was not use for non-mesh viewers) is to provide aligned > allocations. Without it, and the way the mesh viewer code is written, > the viewer simply crashes as soon as it tries to perform an SSE2 > operation on an unaligned structure. Use _mm_malloc, if that doesn't exist use posix_memalign and if that also doesn't exist, just use malloc. That will work (for sse2 alignment). tcmalloc is to get speed from not having to lock threads when they allocate memory: they each have their own pool. I never saw any evidence that the main thread is waiting considerable long times (ie > 10 usec) on a lock in malloc because other threads are trying to alloc/free memory, so I don't see the need for tcmalloc in the viewer. I think LL fell in love with it for their server, but the decision to use it for the viewer is wrong. -- Carlo Wood <ca...@alinoe.com> _______________________________________________ Policies and (un)subscribe information available here: http://wiki.secondlife.com/wiki/OpenSource-Dev Please read the policies before posting to keep unmoderated posting privileges
