On 8/24/2013 2:25 AM, Marco Patzer wrote:
On 2013–08–24 Hans Hagen wrote:
Hard to say what is the issue but it is not a luajittex issue. We don't do anything special, for instance jit is turned off because there is no gain at all (actually with jit enabled, the run is slower).
I can confirm that. I did not find a real-world document which compiled faster with jit. Using the virtual machine provides between 8% and 25% speed gain here.
there is a bit more to gain otherwise (luigi and i will talk about speed related issues at the context meeting)
There is however one difference and that is the compiled lua code: lua and luajit have incompatible formats (apart from the fact that luatex is 5.2 and luajittex is 5.1++). Normally compilation happens automatically i.e. when a font is loaded by luatex, context will generate the relevant compiled file when luajittex is used.
One possibility is that there is some mismatch in version numbers that gets unnoticed.
Let me know if I can provide any additional info.
ok, but currently i have no clue (it might be that there has been a fix without jumping the internal otf handler version number, in which case a mismatch can go unnoticed and no recompile happens in the jit variant) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------