Re: [Gc] RE: about bitmap marking

Ivan Maidanski ivmai at mail.ru
Mon Feb 27 22:38:02 PST 2012


Hi Li Jun,

Please be more polite (at least by using "please", "could you" words). Think of whom you're asking - why should he waste his working time answering your questions? Try to spend more time looking in the source code and experimenting (benchmark results are, of course, welcomed here).

Thanks.
 
28 02 2012, 03:19 "lijun" <lijun at ialab.cs.tsukuba.ac.jp>:
> I asked 2 questions (marked with 「★★」 ) 2 days ago.
> Do you also think so?
> 
> Best regards.
> Li Jun
> 
> -----Original Message-----
> From: lijun [mailto:lijun at ialab.cs.tsukuba.ac.jp]
> Sent: Sunday, February 26, 2012 4:35 PM
> To: 'Boehm, Hans'; 'boehm at acm.org'
> Cc: 'gc at linux.hpl.hp.com'
> Subject: RE: about bitmap marking
> 
> > > In general, there are three advantages of using mark bit table(bitmap marking).
> > >+ it is friendly to copy-on-write.
> Probably.  The writes during marking are certainly better isolated.
> 
> > >+ it helps to attain a higher locality of reference.
> ⇒① In some senses.  As I pointed out earlier, the main goal is to avoid
> ...
> Best regards.
> Li Jun



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