On 12/5/06, Mikhail Fursov <[EMAIL PROTECTED]> wrote:
If you compare performance of allocation - allocation fast path helper code is all you need. And we need to check performance not with microtests, but use real benchmarks. Microtests can hide cache misses in our example.
Yes. Exactly. It is easy to get stuck in the trap of premature optimization. There will be plenty of opportunity to try different vm helper configurations once we get real enterprise workloads up and running. On 12/5/06, Ivan Volosyuk <[EMAIL PROTECTED]> wrote:
> > Helper code is equal. GC code is not. Lets compare apples with oranges. > -- > Ivan > > On 12/5/06, Mikhail Fursov <[EMAIL PROTECTED]> wrote: > > The helpers code is equal, except this load. So if we have different > > performance -> this extra memory access is the cause. > > > > On 12/5/06, Ivan Volosyuk <[EMAIL PROTECTED]> wrote: > > > > > > I think in order to do this comparison, other conditions should be > > > equal. Comparing helper with 1 dependent load in gc_cc and helper with > > > 2 dependent loads in gc_v5 makes no sense to me. > -- Mikhail Fursov
-- Weldon Washburn Intel Enterprise Solutions Software Division
