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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -1,3 +1,26 @@ +Tue Mar 17 18:59:16 2015 Koichi Sasada <ko1@atdot.net> + + * include/ruby/ruby.h: use rb_gc_writebrrier() simply. + For incremental GC, we need to get a pointer to the objspace. + We can share this pointer for the following WB process. + And considering icache hit ratio, prcess in the GC. + + * gc.c (rb_gc_writebarrier): added. + + * gc.c (gc_writebarrier_generational, gc_writebarrier_incremental): + make them NOINLINE because inlining them into rb_gc_writebarrier() + makes a prologue code of rb_gc_writebarrier() longer (storing callee + save registers). + + This patch improve the performance of WB on micro-benchmarks. + + name ruby 2.1 trunk modified + vm1_gc_wb_ary* 0.511 0.632 0.532 + vm1_gc_wb_ary_promoted* 0.578 0.701 0.674 + vm1_gc_wb_obj* 0.419 0.575 0.492 + vm1_gc_wb_obj_promoted* 0.537 0.664 0.618 + (sec) + Tue Mar 17 18:51:43 2015 Koichi Sasada <ko1@atdot.net> * benchmark/bm_vm1_gc_wb_ary(_promoted).rb: separate fastpath and |