Re: [gentoo-dev] RFC: new global USE flag: jit
On Mon, 2012-05-14 at 14:05 -0400, Alexandre Rostovtsev wrote: > I propose adding the following global USE flag: > > jit - Enable just-in-time compilation for improved performance. May > prevent use of some PaX memory protection features in Gentoo Hardened. > > > Current local flags that could probably be unified: > > app-arch/libzpaq:jit - Enable just-in-time compilation for faster > compression (requires SSE2) > > dev-libs/libpcre:jit - Enable Just-In-Time compilation of regexp > bytecode to machine code, through the SLJIT compiler. This feature might > conflict wtih security mitigation strategies such as NX/PaX as enabled > by Gentoo Hardened. > > dev-python/pypy:jit - Enable the JIT compiler > > dev-scheme/racket:jit - Enable just-in-time compiler > > media-sound/csound:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua > > net-libs/webkit-gtk:jit - Enable JIT javascript compiler (disabling it > will cause performance penalty) > > www-client/epiphany:jit - Allow using net-libs/webkit-gtk that has the > JIT javascript compiler enabled > > www-client/luakit:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua, which should make luakit > faster. > > www-client/seamonkey:methodjit - Enable JIT for JavaScript using > MethodJIT for faster JS performance. Hardened users can disable this > USE-flag to use MPROTECT on grsecurity kernels. > > www-servers/nginx:pcre-jit - Enable JIT for pcre > > x11-libs/qt-core:jit - Enables JIT for Javascript usage inside Qt > > x11-libs/qt-script:jit - Enables JIT for Javascript usage inside Qt > > x11-libs/qt-webkit:jit - Enable JavaScriptCore just-in-time compiler for > faster JavaScript execution > > -Alexandre. Update: since the response to the proposal was favorable, jit has now been added to use.desc. Two packages, webkit-gtk and epiphany, have switched to the global flag already; bugs (#416601, #416603, #416605, #416607, #416609, #416611) have been filed with maintainers of the other packages most likely to benefit from the new flag. -Alexandre.
Re: [gentoo-dev] RFC: new global USE flag: jit
> "AR" == Alexandre Rostovtsev writes: AR> www-servers/nginx:pcre-jit - Enable JIT for pcre This one also should remain un-unified. There may be other, unrelated jit options in the future, whether affecting nginx itself or potential PDEPENDs or ???. -JimC -- James Cloos OpenPGP: 1024D/ED7DAEA6
Re: [gentoo-dev] RFC: new global USE flag: jit
On Mon, 2012-05-14 at 21:51 +0200, Dirkjan Ochtman wrote: > On Mon, May 14, 2012 at 8:05 PM, Alexandre Rostovtsev > wrote: > > media-sound/csound:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua > > > > www-client/luakit:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua, which should make luakit > > faster. > > Not sure it's a good fit for these two. In the other cases, there > appears to be just a difference in compilation, but this is about > selecting a different dependency. Good point. Since dev-lang/luajit is the actual name of the selected package, leaving the flag as luajit makes more sense. -Alexandre.
Re: [gentoo-dev] RFC: new global USE flag: jit
On Tue, May 15, 2012 at 1:52 AM, Maxim Kammerer wrote: > > On Mon, May 14, 2012 at 9:05 PM, Alexandre Rostovtsev > wrote: > > Current local flags that could probably be unified: > > What about USE=orc? It's JIT in a sense — IIRC, it creates an > executable in /tmp at run-time. > Doesn't make sense to unnecessarily unify USE-flags like that. "Consolidate just enough, but not too much." -- ~Nirbheek Chauhan Gentoo GNOME+Mozilla Team
Re: [gentoo-dev] RFC: new global USE flag: jit
On Mon, May 14, 2012 at 9:05 PM, Alexandre Rostovtsev wrote: > Current local flags that could probably be unified: What about USE=orc? It's JIT in a sense — IIRC, it creates an executable in /tmp at run-time. -- Maxim Kammerer Liberté Linux (discussion / support: http://dee.su/liberte-contribute)
Re: [gentoo-dev] RFC: new global USE flag: jit
On Mon, May 14, 2012 at 8:05 PM, Alexandre Rostovtsev wrote: > media-sound/csound:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua > > www-client/luakit:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua, which should make luakit > faster. Not sure it's a good fit for these two. In the other cases, there appears to be just a difference in compilation, but this is about selecting a different dependency. Cheers, Dirkjan
Re: [gentoo-dev] RFC: new global USE flag: jit
El lun, 14-05-2012 a las 20:09 +0200, Agostino Sarubbo escribió: > On Monday 14 May 2012 14:05:12 Alexandre Rostovtsev wrote: > > I propose adding the following global USE flag: > > > > jit - Enable just-in-time compilation for improved performance. May > > prevent use of some PaX memory protection features in Gentoo Hardened. > > > > > > Current local flags that could probably be unified: > > > > app-arch/libzpaq:jit - Enable just-in-time compilation for faster > > compression (requires SSE2) > > > > dev-libs/libpcre:jit - Enable Just-In-Time compilation of regexp > > bytecode to machine code, through the SLJIT compiler. This feature might > > conflict wtih security mitigation strategies such as NX/PaX as enabled > > by Gentoo Hardened. > > > > dev-python/pypy:jit - Enable the JIT compiler > > > > dev-scheme/racket:jit - Enable just-in-time compiler > > > > media-sound/csound:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua > > > > net-libs/webkit-gtk:jit - Enable JIT javascript compiler (disabling it > > will cause performance penalty) > > > > www-client/epiphany:jit - Allow using net-libs/webkit-gtk that has the > > JIT javascript compiler enabled > > > > www-client/luakit:luajit - Use the lua just-in-time compiler > > dev-lang/luajit instead of dev-lang/lua, which should make luakit > > faster. > > > > www-client/seamonkey:methodjit - Enable JIT for JavaScript using > > MethodJIT for faster JS performance. Hardened users can disable this > > USE-flag to use MPROTECT on grsecurity kernels. > > > > www-servers/nginx:pcre-jit - Enable JIT for pcre > > > > x11-libs/qt-core:jit - Enables JIT for Javascript usage inside Qt > > > > x11-libs/qt-script:jit - Enables JIT for Javascript usage inside Qt > > > > x11-libs/qt-webkit:jit - Enable JavaScriptCore just-in-time compiler for > > faster JavaScript execution > > > > -Alexandre. > +1 +1 also ;) signature.asc Description: This is a digitally signed message part
Re: [gentoo-dev] RFC: new global USE flag: jit
On Monday 14 May 2012 14:05:12 Alexandre Rostovtsev wrote: > I propose adding the following global USE flag: > > jit - Enable just-in-time compilation for improved performance. May > prevent use of some PaX memory protection features in Gentoo Hardened. > > > Current local flags that could probably be unified: > > app-arch/libzpaq:jit - Enable just-in-time compilation for faster > compression (requires SSE2) > > dev-libs/libpcre:jit - Enable Just-In-Time compilation of regexp > bytecode to machine code, through the SLJIT compiler. This feature might > conflict wtih security mitigation strategies such as NX/PaX as enabled > by Gentoo Hardened. > > dev-python/pypy:jit - Enable the JIT compiler > > dev-scheme/racket:jit - Enable just-in-time compiler > > media-sound/csound:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua > > net-libs/webkit-gtk:jit - Enable JIT javascript compiler (disabling it > will cause performance penalty) > > www-client/epiphany:jit - Allow using net-libs/webkit-gtk that has the > JIT javascript compiler enabled > > www-client/luakit:luajit - Use the lua just-in-time compiler > dev-lang/luajit instead of dev-lang/lua, which should make luakit > faster. > > www-client/seamonkey:methodjit - Enable JIT for JavaScript using > MethodJIT for faster JS performance. Hardened users can disable this > USE-flag to use MPROTECT on grsecurity kernels. > > www-servers/nginx:pcre-jit - Enable JIT for pcre > > x11-libs/qt-core:jit - Enables JIT for Javascript usage inside Qt > > x11-libs/qt-script:jit - Enables JIT for Javascript usage inside Qt > > x11-libs/qt-webkit:jit - Enable JavaScriptCore just-in-time compiler for > faster JavaScript execution > > -Alexandre. +1 -- Agostino Sarubboago -at- gentoo.org Gentoo/AMD64 Arch Security Liaison GPG: 0x7CD2DC5D signature.asc Description: This is a digitally signed message part.
[gentoo-dev] RFC: new global USE flag: jit
I propose adding the following global USE flag: jit - Enable just-in-time compilation for improved performance. May prevent use of some PaX memory protection features in Gentoo Hardened. Current local flags that could probably be unified: app-arch/libzpaq:jit - Enable just-in-time compilation for faster compression (requires SSE2) dev-libs/libpcre:jit - Enable Just-In-Time compilation of regexp bytecode to machine code, through the SLJIT compiler. This feature might conflict wtih security mitigation strategies such as NX/PaX as enabled by Gentoo Hardened. dev-python/pypy:jit - Enable the JIT compiler dev-scheme/racket:jit - Enable just-in-time compiler media-sound/csound:luajit - Use the lua just-in-time compiler dev-lang/luajit instead of dev-lang/lua net-libs/webkit-gtk:jit - Enable JIT javascript compiler (disabling it will cause performance penalty) www-client/epiphany:jit - Allow using net-libs/webkit-gtk that has the JIT javascript compiler enabled www-client/luakit:luajit - Use the lua just-in-time compiler dev-lang/luajit instead of dev-lang/lua, which should make luakit faster. www-client/seamonkey:methodjit - Enable JIT for JavaScript using MethodJIT for faster JS performance. Hardened users can disable this USE-flag to use MPROTECT on grsecurity kernels. www-servers/nginx:pcre-jit - Enable JIT for pcre x11-libs/qt-core:jit - Enables JIT for Javascript usage inside Qt x11-libs/qt-script:jit - Enables JIT for Javascript usage inside Qt x11-libs/qt-webkit:jit - Enable JavaScriptCore just-in-time compiler for faster JavaScript execution -Alexandre.
