Re: how to tune generational collector in work3?

["Juris Kalnins" <juris@...>]

On Tue, 01 Jun 2010 15:33:32 +0300, Roberto Ierusalimschy  
<roberto@inf.puc-rio.br> wrote:

> > This fixes it:
> >
> > [...]
> > +    luaC_runtilstate(L, ~bitmask(GCSpause));
> >      luaC_runtilstate(L, bitmask(GCSpause));  /* run collection */
>
> This seems a stupid bug; sorry about that. Minor collections were void.
> (This shows that the tests about minor collections are still not
> in the test suit. A small change a few weeks ago broke it and we did
> not notice...)
>
> How things are working now?

With the modified stepmul logic and this fix -- great.
Note the maxalloc:

Generational, with debug prints (yes, gcpause is 105%) =====

$ time ./lua ~/P/gengc-test.lua 500 1000 105 402400
OK, done, maxalloc =    18650.85546875  , #t =  1001

real    0m1.438s
user    0m1.424s
sys     0m0.012s

Stock gc, no tunings =======================================

$ time ./lua ~/P/gengc-test.lua 500 1000 0 0
OK, done, maxalloc =    60667.359375    , #t =  1001

real    0m1.175s
user    0m1.100s
sys     0m0.072s