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bug#46881: 28.0.50; pdumper dumping causes way too many syscalls
From: |
Pip Cet |
Subject: |
bug#46881: 28.0.50; pdumper dumping causes way too many syscalls |
Date: |
Fri, 5 Mar 2021 02:30:13 +0000 |
On Thu, Mar 4, 2021 at 10:26 PM Daniel Colascione <dancol@dancol.org> wrote:
> On 3/3/21 12:51 AM, Eli Zaretskii wrote:
> > Daniel, Paul: any comments? In particular, is it safe to allocate
> > large amounts of memory off the heap while dumping? A couple of
> > places in pdumper.c says some parts of code should call malloc.
>
> It looks fine, but wouldn't dumping to a FILE* (with internal buffering)
> do the same basic thing in a simpler way?
I initially set out to do that, but decided against it. We don't just
write sequentially (when FILE I/O helps, a little), we also have the
seek-and-fixup phase, and it didn't seem any simpler at that point..
> There aren't any particular
> constraints on the environment _during_ the dump: we even make new lisp
> objects. It's when loading the dump, early in initialization, that you
> have to be careful.
Thanks!
Pip
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, (continued)
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Eli Zaretskii, 2021/03/03
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Daniel Colascione, 2021/03/04
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls,
Pip Cet <=
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Eli Zaretskii, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Pip Cet, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Eli Zaretskii, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Pip Cet, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Andrea Corallo, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Eli Zaretskii, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Lars Ingebrigtsen, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Eli Zaretskii, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Pip Cet, 2021/03/05
- bug#46881: 28.0.50; pdumper dumping causes way too many syscalls, Pip Cet, 2021/03/05