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From: Eli Zaretskii <eliz@gnu.org>
To: Pip Cet <pipcet@gmail.com>
Cc: rudalics@gmx.at, monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: Opportunistic GC
Date: Mon, 08 Mar 2021 19:06:39 +0200	[thread overview]
Message-ID: <83v9a1r2w0.fsf@gnu.org> (raw)
In-Reply-To: <CAOqdjBcmpfeBjtAOHM9urk=TLhYmtRuCYw=kWKNk1FBpdp8S-A@mail.gmail.com> (message from Pip Cet on Mon, 8 Mar 2021 16:35:30 +0000)

> From: Pip Cet <pipcet@gmail.com>
> Date: Mon, 8 Mar 2021 16:35:30 +0000
> Cc: rudalics@gmx.at, Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
> 
> > And how do you make sure the mark bits will be on a different/separate
> > page?
> 
> We allocate cons blocks aligned to physical pages.

What is a "physical page" for this purpose?  You want a page whose
size will make sure you don't trigger copy-on-write when you change
some bit -- are you sure that this size is always the same as the
"page size" we use for so-called "page-aligned" allocations?

And if the answer is YES, how future-proof is it?

> What am I missing?

I don't know whether we are missing something.  We are on new ground
here: we never cared in Emacs about physical layout of memory, at
least not so much.



  reply	other threads:[~2021-03-08 17:06 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-08  3:35 Opportunistic GC Stefan Monnier
2021-03-08  7:20 ` Pip Cet
2021-03-08  8:26   ` martin rudalics
2021-03-08  9:02     ` Pip Cet
2021-03-08  9:51       ` martin rudalics
2021-03-08 10:44         ` Pip Cet
2021-03-08 11:37           ` martin rudalics
2021-03-08 12:27             ` Pip Cet
2021-03-08 18:06               ` martin rudalics
2021-03-08 18:24                 ` Concurrent GC via fork (was: Opportunistic GC) Stefan Monnier
2021-03-09  8:10                   ` Concurrent GC via fork martin rudalics
2021-03-10 20:35                 ` Opportunistic GC Pip Cet
2021-03-08 11:38           ` Stefan Kangas
2021-03-08 12:55             ` Pip Cet
2021-03-08 14:06             ` Andrea Corallo via Emacs development discussions.
2021-03-08 14:49           ` Eli Zaretskii
2021-03-08 15:02             ` Pip Cet
2021-03-08 15:23               ` Eli Zaretskii
2021-03-08 15:39                 ` Pip Cet
2021-03-08 16:27                   ` Eli Zaretskii
2021-03-08 16:35                     ` Pip Cet
2021-03-08 17:06                       ` Eli Zaretskii [this message]
2021-03-08 15:46               ` Stefan Monnier
2021-03-08 16:11                 ` Pip Cet
2021-03-08 16:37                   ` Stefan Monnier
2021-03-08 14:01   ` Andrea Corallo via Emacs development discussions.
2021-03-08 15:04     ` Pip Cet
2021-03-08 15:50       ` Stefan Monnier
2021-03-08 15:52       ` Andrea Corallo via Emacs development discussions.
2021-03-08 16:14         ` Philipp Stephani
2021-03-08 16:18           ` Andrea Corallo via Emacs development discussions.
2021-03-08 16:40             ` Philipp Stephani
2021-03-08 16:44         ` Stefan Monnier
2021-03-08 17:13           ` Eli Zaretskii
2021-03-10 20:25             ` Pip Cet
2021-03-10 20:48               ` Eli Zaretskii
2021-03-11  7:55                 ` Pip Cet
2021-03-11  8:37                   ` Eli Zaretskii
2021-03-11  9:03                     ` Pip Cet
2021-03-11  9:34                       ` Eli Zaretskii
2021-03-11 10:11                         ` Pip Cet
2021-03-11 11:35                           ` Eli Zaretskii
2021-03-09  6:22           ` Richard Stallman
2021-03-09  8:11             ` Pip Cet
2021-03-10  5:52               ` Richard Stallman
2021-03-08 14:45   ` Eli Zaretskii
2021-03-08 14:57     ` Pip Cet
2021-03-08 15:16       ` Eli Zaretskii
2021-03-09 13:01       ` Eli Zaretskii
2021-03-10 20:21         ` Pip Cet
2021-03-10 20:41           ` Eli Zaretskii
2021-03-11  8:06             ` Pip Cet
2021-03-11  9:03               ` Eli Zaretskii
2021-03-08 16:03   ` Concurrent GC via `fork` (was: Opportunistic GC) Stefan Monnier
2021-03-08 16:25     ` Pip Cet
2021-03-08 17:37       ` Concurrent GC via `fork` Stefan Monnier
2021-03-08 19:21       ` Lars Ingebrigtsen
2021-03-10 17:18   ` Opportunistic GC Matt Armstrong
2021-03-10 19:38     ` Pip Cet
2022-07-05  1:47   ` Stefan Monnier
2022-07-05 13:49     ` T.V Raman

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