sorry for the noise, I should rest a bit after this On Wed, Apr 28, 2010 at 11:39 PM, Federico G. Benavento <benave...@gmail.com> wrote: > sorry, but why in the compiler and not as a library function like in > libthread? > > http://plan9.bell-labs.com/sources/plan9/sys/src/libthread/xinc386.s > > On Wed, Apr 28, 2010 at 4:16 PM, Venkatesh Srinivas > <m...@endeavour.zapto.org> wrote: >> Hi, >> >> A few months ago, I added a patch to inferno-npe to use LOCK XADD >> instead of the current lock/add/unlock sequence for incref and decref: >> (http://code.google.com/p/inferno-npe/source/detail?r=b83540e1e77e62a19cbd21d2eb54d43d338716a5 >> and >> http://code.google.com/p/inferno-npe/source/detail?r=82f13e6755218ecb7dec0f1392b2eb8bfe0bb2c7). >> On a 2.66 GHz Core 2 Duo, we noticed a full 14% reduction in runtime >> (9.6s vs 11.2s) of the thread-ring test. Similar performance gains >> were noticed on a Core i7 machine, but I no longer have the numbers >> handy. >> >> Perhaps this change is interesting for Plan 9... >> >> -- vs >> >> > > > > -- > Federico G. Benavento >
-- Federico G. Benavento
