On Tue, 24 Jun 2003 07:46:39 -0500 "Curtis L. Olson" <[EMAIL PROTECTED]> wrote:
[snip] > Think about this another way ... do a profile of flightgear. I bet > you will find that the graphics rendering portion of FlightGear takes > 90-95% of the entire application work load. If you can't find a way > to split that up (which is nigh unto impossible since this is all > involving opengl which inherently resists threading without a *huge* > amount of effort and complexity[1]) then threading the other 5-10% of > the work isn't going to gain you a whole lot. For the record, the top 20 functions as reported by oprofile-0.5.3 are: Cpu type: PIII Cpu speed was (MHz estimation) : 807.98 Counter 0 counted CPU_CLK_UNHALTED events (clocks processor is not halted) with a unit mask of 0x00 (No unit mask) count 400000 % symbol name 1.02981 ssgSelector::select(unsigned) 1.03343 FGHitList::IntersectBranch(ssgBranch*, double (*) [4], double*, double*) 1.07417 ssgEntity::dirtyBSphere() 1.10563 ssgEntity::getTraversalMask() 1.13437 FGInstrumentLayer::transform() const 1.15995 SGPropertyNode::hash_table::get(char const*) 1.35369 ssgLeaf::cull(sgFrustum*, float (*) [4], int) 1.47658 slEnvelope::applyToVolume(unsigned char*, unsigned char*, int, int) 1.53362 sgXformPnt3(float*, float const*, float const (*) [4]) 1.60288 ssgVtxTable::getNumColours() 1.77896 ssgBranch::recalcBSphere() 2.05825 sgdMakeNormal(double*, double const*, double const*, double const*) 2.1051 SGPropertyNode::hash_table::bucket::get_entry(char const*, bool) 2.2873 sgFrustum::contains(sgSphere const*) const 2.69288 SGPropertyNode::hash_table::hashcode(char const*) 3.03894 ssgVtxTable::getNumVertices() 3.16909 ssgSimpleState::apply() 3.2234 ssgVtxTable::draw_geometry() 4.77468 ssgBranch::cull(sgFrustum*, float (*) [4], int) 4.77513 ssgEntity::cull_test(sgFrustum*, float (*) [4], int) Bernie _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
