From: Stefan Monnier <monnier@iro.umontreal.ca> To: Eli Zaretskii <eliz@gnu.org> Cc: emacs-devel@gnu.org Subject: Re: When should ralloc.c be used? Date: Tue, 25 Oct 2016 15:27:27 -0400 [thread overview] Message-ID: <jwvd1io8c92.fsf-monnier+Inbox@gnu.org> (raw) In-Reply-To: <83eg34wfkp.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 25 Oct 2016 19:36:54 +0300") >> IIUC releasing memory with sbrk can only be done if that memory is at >> the end of the heap. > Since ralloc.c relocates blocks, it can make this happen more easily. But the sbrk area is shared with gmalloc, whose data is not relocatable, so as soon as gmalloc calls sbrk, the space previously allocated by ralloc can't be returned any more. >> > It seems ralloc is actually at an advantage, because relocating blocks >> > helps collect together a larger free block. >> mmap can always free what it has allocated before, without any need to >> relocate anything. > It makes no sense to release random pages here and there, all you get > is fragmentation at address space level. Yes, but address space is much more plentiful. Note that glibc uses exactly this approach and it works very well for us. Stefan
next prev parent reply other threads:[~2016-10-25 19:27 UTC|newest]
Thread overview: 375+ messages / expand[flat|nested] mbox.gz Atom feed top
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2016-10-22 3:03 ` When should ralloc.c be used? (WAS: bug#24358) npostavs
2016-10-22 5:32 ` Paul Eggert
2016-10-22 7:29 ` Eli Zaretskii
2016-10-22 18:34 ` Paul Eggert
2016-10-22 19:43 ` When should ralloc.c be used? Stefan Monnier
2016-10-23 2:37 ` Paul Eggert
2016-10-23 6:53 ` Eli Zaretskii
2016-10-23 7:57 ` Paul Eggert
2016-10-23 8:58 ` Eli Zaretskii
2016-10-23 9:38 ` Paul Eggert
2016-10-23 12:50 ` Eli Zaretskii
2016-10-23 13:39 ` Stefan Monnier
2016-10-23 14:01 ` Eli Zaretskii
2016-10-23 14:18 ` Stefan Monnier
2016-10-23 18:19 ` Paul Eggert
2016-10-23 19:03 ` Eli Zaretskii
2016-10-23 20:36 ` Stefan Monnier
2016-10-24 6:54 ` Eli Zaretskii
2016-10-24 10:15 ` Eli Zaretskii
2016-10-24 4:59 ` Paul Eggert
2016-10-24 7:44 ` Eli Zaretskii
2016-10-24 8:29 ` Andreas Schwab
2016-10-24 8:47 ` Eli Zaretskii
2016-10-24 16:21 ` Paul Eggert
2016-10-24 16:39 ` Eli Zaretskii
2016-10-24 16:54 ` Paul Eggert
2016-10-24 17:05 ` Eli Zaretskii
2016-10-25 6:23 ` Paul Eggert
2016-10-25 16:11 ` Eli Zaretskii
2016-10-28 6:18 ` Jérémie Courrèges-Anglas
2016-10-28 6:19 ` Jérémie Courrèges-Anglas
2016-10-28 7:40 ` Eli Zaretskii
2016-10-23 15:22 ` Andreas Schwab
2016-10-23 15:49 ` Eli Zaretskii
2016-10-23 15:57 ` Andreas Schwab
2016-10-23 17:06 ` Eli Zaretskii
2016-10-23 20:35 ` Stefan Monnier
2016-10-23 16:44 ` Skipping unexec via a big .elc file (was: When should ralloc.c be used?) Stefan Monnier
2016-10-23 17:34 ` Eli Zaretskii
2016-10-23 20:27 ` Skipping unexec via a big .elc file Stefan Monnier
2016-10-24 6:22 ` Eli Zaretskii
2016-10-24 12:47 ` Stefan Monnier
2016-10-24 13:08 ` Eli Zaretskii
2016-10-24 14:15 ` Stefan Monnier
2016-10-24 1:07 ` Stefan Monnier
2016-10-24 6:39 ` Eli Zaretskii
2016-10-24 6:47 ` Lars Ingebrigtsen
2016-10-24 7:17 ` Eli Zaretskii
2016-10-24 8:24 ` Andreas Schwab
2016-10-24 8:41 ` Eli Zaretskii
2016-10-24 9:47 ` Daniel Colascione
2016-10-24 10:00 ` Eli Zaretskii
2016-10-24 10:03 ` Daniel Colascione
2016-10-24 10:18 ` Eli Zaretskii
2016-10-24 10:28 ` Philipp Stephani
2016-10-24 10:51 ` Eli Zaretskii
2016-10-24 13:52 ` Stefan Monnier
2016-10-24 16:04 ` Eli Zaretskii
2016-10-24 13:04 ` Stefan Monnier
2016-10-24 13:35 ` Eli Zaretskii
2016-10-24 14:45 ` Daniel Colascione
2016-10-24 15:58 ` Eli Zaretskii
2016-10-24 16:17 ` Daniel Colascione
2016-10-24 16:51 ` Philipp Stephani
2016-10-24 19:47 ` Daniel Colascione
2016-10-25 15:59 ` Eli Zaretskii
2016-10-25 16:14 ` Daniel Colascione
2016-10-25 17:05 ` Eli Zaretskii
2016-10-25 19:49 ` Stefan Monnier
2016-10-25 22:53 ` Perry E. Metzger
2016-10-26 2:36 ` Eli Zaretskii
2016-10-26 2:37 ` Perry E. Metzger
2016-10-24 16:52 ` Eli Zaretskii
2016-10-25 22:46 ` Perry E. Metzger
2016-10-24 9:40 ` Ken Raeburn
2016-10-24 13:13 ` Stefan Monnier
2016-10-25 9:02 ` Ken Raeburn
2016-10-25 13:48 ` Stefan Monnier
2016-10-27 8:51 ` Ken Raeburn
2016-10-30 14:43 ` Ken Raeburn
2016-10-30 15:31 ` Simon Leinen
2016-10-30 16:52 ` Daniel Colascione
2016-10-31 14:27 ` Stefan Monnier
2016-11-02 7:36 ` Ken Raeburn
2016-11-02 12:17 ` Stefan Monnier
2016-11-02 12:22 ` Stefan Monnier
2016-11-03 5:37 ` Ken Raeburn
2016-12-11 13:34 ` Ken Raeburn
2016-12-11 15:42 ` Eli Zaretskii
2016-12-24 11:06 ` Eli Zaretskii
2016-12-25 15:46 ` Stefan Monnier
2016-12-11 19:18 ` Richard Stallman
2016-12-15 12:57 ` Ken Raeburn
2016-12-15 16:04 ` Eli Zaretskii
2016-12-15 16:26 ` Ken Raeburn
2016-12-11 19:18 ` Richard Stallman
2016-12-12 17:25 ` Ken Raeburn
2016-12-13 15:21 ` Ken Brown
2016-12-14 5:30 ` Ken Raeburn
2016-12-14 5:45 ` Ken Raeburn
2016-12-14 10:58 ` Phil Sainty
2016-12-14 12:06 ` Yuri Khan
2016-12-14 11:00 ` Lars Ingebrigtsen
2016-12-15 11:45 ` Ken Raeburn
2016-12-15 17:28 ` Ken Raeburn
2016-12-15 19:59 ` Eli Zaretskii
2016-12-15 22:07 ` Clément Pit--Claudel
2016-12-16 7:54 ` Eli Zaretskii
2016-12-16 14:28 ` Clément Pit--Claudel
2016-12-16 14:39 ` Eli Zaretskii
2016-12-16 15:28 ` Clément Pit--Claudel
2016-12-16 21:27 ` Eli Zaretskii
2016-12-16 21:38 ` Noam Postavsky
2016-12-17 14:56 ` Stefan Monnier
2016-12-19 15:11 ` Phillip Lord
2016-12-16 7:56 ` Eli Zaretskii
2016-12-19 15:15 ` Phillip Lord
2016-12-19 15:09 ` Phillip Lord
2016-12-20 18:57 ` Ken Raeburn
2016-12-20 23:22 ` Stefan Monnier
2016-12-21 7:44 ` Ken Raeburn
2016-12-21 12:13 ` Phillip Lord
2016-12-16 14:22 ` Robert Pluim
2016-12-24 13:37 ` Eli Zaretskii
2016-12-26 17:48 ` Eli Zaretskii
2017-01-07 9:40 ` Eli Zaretskii
2017-01-09 10:28 ` Ken Raeburn
2017-01-10 2:25 ` Stefan Monnier
2017-01-10 9:46 ` Andreas Schwab
2017-01-10 17:19 ` Eli Zaretskii
2017-01-11 6:32 ` Ken Raeburn
2017-01-12 8:17 ` Ken Raeburn
2017-01-14 10:41 ` Eli Zaretskii
2017-01-14 10:55 ` Andreas Schwab
2017-01-14 11:07 ` Eli Zaretskii
2017-01-14 11:26 ` Alan Mackenzie
2017-01-14 12:19 ` Andreas Schwab
2017-01-14 13:05 ` Eli Zaretskii
2017-01-14 15:12 ` Andreas Schwab
2017-01-14 17:37 ` Eli Zaretskii
2017-01-14 18:50 ` Andreas Schwab
2017-01-14 15:30 ` Stefan Monnier
2017-01-14 17:42 ` Eli Zaretskii
2017-01-14 18:11 ` Stefan Monnier
2017-01-14 20:13 ` Eli Zaretskii
2017-01-21 7:58 ` Ken Raeburn
2017-01-22 16:55 ` Ken Raeburn
2017-02-02 9:10 ` Ken Raeburn
2017-02-04 10:37 ` Eli Zaretskii
2017-02-05 14:19 ` Ken Raeburn
2017-02-05 15:51 ` Eli Zaretskii
2017-02-05 23:19 ` Ken Raeburn
2017-02-06 15:20 ` Ken Raeburn
2017-02-06 15:39 ` Stefan Monnier
2017-02-06 19:08 ` Ken Raeburn
2017-02-06 22:39 ` Stefan Monnier
2017-02-08 10:31 ` Ken Raeburn
2017-02-08 14:38 ` Ken Brown
2017-02-05 20:03 ` Ken Brown
2017-02-25 14:52 ` Eli Zaretskii
2017-02-25 15:19 ` Eli Zaretskii
2017-02-26 12:37 ` Ken Raeburn
2017-03-04 14:23 ` Eli Zaretskii
2017-03-06 8:46 ` Ken Raeburn
2017-03-11 12:27 ` Eli Zaretskii
2017-03-11 13:18 ` Andreas Schwab
2017-03-11 13:42 ` Eli Zaretskii
2017-03-11 15:48 ` Stefan Monnier
2017-03-11 21:48 ` Richard Stallman
2017-03-11 22:06 ` Stefan Monnier
2017-03-11 23:59 ` Ken Raeburn
2017-03-12 17:06 ` Stefan Monnier
2017-03-13 8:25 ` Ken Raeburn
2017-03-26 16:44 ` Eli Zaretskii
2017-03-28 2:27 ` Ken Raeburn
2017-03-31 6:57 ` Eli Zaretskii
2017-03-31 8:40 ` Ken Raeburn
2017-04-03 16:15 ` Ken Raeburn
2017-04-03 16:57 ` Alan Mackenzie
2017-04-03 18:35 ` Ken Raeburn
2017-04-03 19:14 ` Eli Zaretskii
2017-04-04 8:08 ` Ken Raeburn
2017-04-04 9:51 ` Robert Pluim
2017-04-04 10:27 ` joakim
2017-04-04 12:14 ` Clément Pit-Claudel
2017-04-04 14:38 ` Eli Zaretskii
2017-04-04 15:16 ` Clément Pit-Claudel
2017-04-04 15:53 ` Eli Zaretskii
2017-04-04 18:22 ` Clément Pit-Claudel
2017-04-07 5:46 ` Lars Brinkhoff
2017-04-07 7:28 ` Eli Zaretskii
2017-04-07 9:02 ` Ken Raeburn
2017-04-07 13:40 ` Eli Zaretskii
2017-04-07 16:02 ` Ken Raeburn
2017-04-07 16:17 ` Clément Pit-Claudel
2017-04-08 15:03 ` Philipp Stephani
2017-04-08 15:15 ` Clément Pit-Claudel
2017-04-08 15:53 ` Philipp Stephani
2017-04-08 16:18 ` Eli Zaretskii
2017-04-08 18:01 ` Stefan Monnier
2017-05-01 11:41 ` Philipp Stephani
2017-04-08 17:58 ` Clément Pit-Claudel
2017-05-01 11:40 ` Philipp Stephani
2017-05-01 12:07 ` Eli Zaretskii
2017-05-18 17:39 ` Daniel Colascione
2017-05-18 19:45 ` Eli Zaretskii
2018-12-25 15:46 ` Philipp Stephani
2018-12-25 17:21 ` Eli Zaretskii
2018-12-25 19:15 ` Daniel Colascione
2018-12-26 15:27 ` Eli Zaretskii
2019-01-07 21:37 ` Daniel Colascione
2019-01-15 22:46 ` Daniel Colascione
2019-01-16 8:45 ` Tassilo Horn
2019-01-16 10:25 ` Robert Pluim
2019-01-16 11:58 ` Phillip Lord
2019-01-18 12:46 ` Windows Binaries with pdumper Phillip Lord
2019-01-21 11:30 ` Jostein Kjønigsen
2019-01-21 14:19 ` Phillip Lord
2019-01-16 12:00 ` Skipping unexec via a big .elc file Elias Mårtenson
2019-01-16 15:59 ` Eli Zaretskii
2019-01-16 16:08 ` Daniel Colascione
2019-01-16 21:56 ` Clément Pit-Claudel
2017-05-21 8:44 ` compiled lisp file format (Re: Skipping unexec via a big .elc file) Ken Raeburn
2017-05-21 8:53 ` Paul Eggert
2017-05-28 11:07 ` Ken Raeburn
2017-05-28 12:43 ` Philipp Stephani
2017-05-29 9:33 ` Ken Raeburn
2017-07-02 15:46 ` Philipp Stephani
2017-07-03 1:44 ` Ken Raeburn
2017-09-24 13:57 ` Philipp Stephani
2017-09-27 8:31 ` Ken Raeburn
2017-05-28 21:09 ` Paul Eggert
2017-05-29 9:33 ` Ken Raeburn
2017-05-29 16:37 ` Paul Eggert
2017-05-29 17:39 ` Eli Zaretskii
2017-05-29 18:03 ` Paul Eggert
2017-05-29 18:53 ` Eli Zaretskii
2017-05-29 20:15 ` Paul Eggert
2017-05-30 5:52 ` Ken Raeburn
2017-05-30 5:55 ` Eli Zaretskii
2017-05-21 16:02 ` John Wiegley
2017-04-07 13:23 ` Skipping unexec via a big .elc file Stefan Monnier
2017-04-10 16:19 ` Ken Raeburn
2016-10-24 18:34 ` Lars Brinkhoff
2016-10-24 19:52 ` Eli Zaretskii
2016-10-23 12:55 ` When should ralloc.c be used? Stefan Monnier
2016-10-23 14:28 ` Stefan Monnier
2016-10-23 14:57 ` Eli Zaretskii
2016-10-23 15:07 ` Stefan Monnier
2016-10-23 15:44 ` Eli Zaretskii
2016-10-23 16:30 ` Stefan Monnier
2016-10-23 16:45 ` Eli Zaretskii
2016-10-23 16:49 ` Stefan Monnier
2016-10-23 17:35 ` Eli Zaretskii
2016-10-23 20:23 ` Stefan Monnier
2016-10-23 20:33 ` Eli Zaretskii
2016-10-23 20:44 ` Stefan Monnier
2016-10-24 5:11 ` Paul Eggert
2016-10-24 12:33 ` Stefan Monnier
2016-10-24 13:05 ` Eli Zaretskii
2016-10-24 14:12 ` Stefan Monnier
2016-10-24 16:00 ` Eli Zaretskii
2016-10-24 18:51 ` Stefan Monnier
2016-10-24 14:37 ` Stefan Monnier
2016-10-24 15:40 ` Eli Zaretskii
2016-10-24 16:27 ` Daniel Colascione
2016-10-24 16:57 ` Eli Zaretskii
2016-10-25 2:34 ` Richard Stallman
2016-10-25 14:13 ` Stefan Monnier
2016-10-25 14:14 ` Stefan Monnier
2016-10-28 6:03 ` Jérémie Courrèges-Anglas
2016-10-28 6:23 ` Daniel Colascione
2016-10-28 7:09 ` Jérémie Courrèges-Anglas
2016-10-28 7:46 ` Eli Zaretskii
2016-10-28 8:11 ` Daniel Colascione
2016-10-28 8:27 ` Eli Zaretskii
2016-10-28 8:44 ` Daniel Colascione
2016-10-28 9:43 ` Eli Zaretskii
2016-10-28 9:52 ` Daniel Colascione
2016-10-28 12:25 ` Eli Zaretskii
2016-10-28 13:37 ` Stefan Monnier
2016-10-28 14:30 ` Eli Zaretskii
2016-10-28 14:43 ` Stefan Monnier
2016-10-28 15:41 ` Daniel Colascione
2016-10-29 6:08 ` Eli Zaretskii
2016-10-29 6:14 ` Daniel Colascione
2016-10-28 12:11 ` Stefan Monnier
2016-10-28 11:40 ` Jérémie Courrèges-Anglas
2016-10-28 13:03 ` Stefan Monnier
2016-10-28 14:41 ` Jérémie Courrèges-Anglas
2016-10-28 15:34 ` Daniel Colascione
2016-10-24 18:45 ` Stefan Monnier
2016-10-24 19:38 ` Eli Zaretskii
2016-10-25 14:12 ` Stefan Monnier
2016-10-25 16:36 ` Eli Zaretskii
2016-10-25 19:27 ` Stefan Monnier [this message]
2016-10-25 3:12 ` Ken Raeburn
2016-10-25 16:06 ` Eli Zaretskii
2016-10-26 4:36 ` Ken Raeburn
2016-10-26 11:40 ` Eli Zaretskii
2016-10-27 8:51 ` Ken Raeburn
2016-10-24 6:59 ` Eli Zaretskii
2016-10-24 12:45 ` Stefan Monnier
2016-10-24 13:07 ` Eli Zaretskii
2016-10-24 14:42 ` Stefan Monnier
2016-10-24 15:43 ` Eli Zaretskii
2016-10-24 18:50 ` Stefan Monnier
2016-10-24 16:10 ` Eli Zaretskii
2016-10-24 16:56 ` Richard Stallman
2016-10-24 0:21 ` When should ralloc.c be used? (WAS: bug#24358) Richard Stallman
2016-10-24 3:59 ` Paul Eggert
2016-10-24 7:15 ` Eli Zaretskii
2016-10-24 16:55 ` Richard Stallman
2016-10-24 17:09 ` Eli Zaretskii
2016-10-25 2:35 ` Richard Stallman
2016-10-25 6:38 ` Paul Eggert
2016-10-25 16:04 ` Eli Zaretskii
2016-10-25 23:49 ` Richard Stallman
2016-10-26 5:08 ` Paul Eggert
2016-10-26 11:46 ` Eli Zaretskii
2016-10-26 13:10 ` Noam Postavsky
2016-10-26 14:20 ` Eli Zaretskii
2016-10-27 1:23 ` Richard Stallman
2016-10-27 1:36 ` Paul Eggert
2016-10-27 13:35 ` Perry E. Metzger
2016-10-27 14:51 ` Paul Eggert
2016-10-27 15:05 ` Perry E. Metzger
2016-10-27 18:13 ` Eli Zaretskii
2016-10-27 21:03 ` Perry E. Metzger
2016-10-27 21:07 ` Daniel Colascione
2016-10-27 23:23 ` Perry E. Metzger
2016-10-27 23:32 ` When should ralloc.c be used? Daniel Colascione
2016-10-28 7:06 ` When should ralloc.c be used? (WAS: bug#24358) Eli Zaretskii
2016-10-28 7:03 ` Eli Zaretskii
2016-10-27 13:44 ` Fabrice Popineau
2016-10-27 15:35 ` Eli Zaretskii
2016-10-27 20:39 ` Richard Stallman
2016-10-28 6:48 ` Eli Zaretskii
2016-10-28 19:12 ` Richard Stallman
2016-10-29 6:37 ` Eli Zaretskii
2016-10-29 14:55 ` When should ralloc.c be used? Stefan Monnier
2016-10-30 16:13 ` Eli Zaretskii
2016-10-30 21:47 ` Stefan Monnier
2016-10-29 16:38 ` When should ralloc.c be used? (WAS: bug#24358) Richard Stallman
2016-10-29 21:57 ` Eli Zaretskii
2016-10-31 19:18 ` Richard Stallman
2016-10-31 20:58 ` Eli Zaretskii
2016-10-28 12:51 ` When should ralloc.c be used? Stefan Monnier
2016-10-27 20:40 ` When should ralloc.c be used? (WAS: bug#24358) Richard Stallman
2016-10-27 22:34 ` Paul Eggert
2016-10-28 2:40 ` Richard Stallman
2016-10-28 7:21 ` Eli Zaretskii
2016-10-28 2:40 ` Richard Stallman
2016-10-28 6:55 ` Eli Zaretskii
2016-10-26 11:37 ` Eli Zaretskii
2016-10-27 1:24 ` Richard Stallman
2016-10-28 12:57 ` When should ralloc.c be used? Stefan Monnier
2016-10-28 19:13 ` Richard Stallman
2016-10-28 22:46 ` Stefan Monnier
2016-10-29 16:35 ` Richard Stallman
2016-10-29 6:39 ` Eli Zaretskii
2016-10-29 16:37 ` Richard Stallman
2016-10-29 21:51 ` Eli Zaretskii
2016-10-30 11:33 ` Richard Stallman
2016-10-30 15:33 ` Alp Aker
2016-10-30 17:19 ` Richard Stallman
2016-10-30 16:08 ` Eli Zaretskii
2016-10-25 23:49 ` When should ralloc.c be used? (WAS: bug#24358) Richard Stallman
2016-10-25 2:35 ` Richard Stallman
2016-10-25 16:05 ` Eli Zaretskii
2016-10-27 1:22 ` Richard Stallman
2016-10-25 23:00 ` Perry E. Metzger
2016-10-26 2:37 ` Eli Zaretskii
2016-10-27 1:25 ` Richard Stallman
2016-10-24 14:04 ` When should ralloc.c be used? Stefan Monnier
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