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bug#45200: [PATCH] Force Glibc to free the memory freed
From: |
Stefan Monnier |
Subject: |
bug#45200: [PATCH] Force Glibc to free the memory freed |
Date: |
Tue, 02 Feb 2021 23:50:41 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
>> with malloc_trim:
>> (8.920371394 232 2.106283245)
>> (9.038083601 231 2.060810826)
>> (9.140798641 231 2.0594013240000004)
>>
>> without malloc_trim:
>> (8.987097209 232 2.070143482)
>> (8.700478084 231 1.7745506179999997)
>> (8.781121056 231 1.7870093610000004)
>>
>> The difference is just 3-4% (8.7 / 9 ≈ 0.9666666667). It looks to me
>> insignificant enough to not show up anywhere during interactive work
>> with Emacs.
>
> It's indeed not too costly, but what about the upside?
BTW, maybe a better way forward than trying to convince us that it's
a good default (which could be hard if the upside is a reduction of the
memory use by a few percent: for many people it might be less
relevant/noticeable than the corresponding few percents lost in speed)
is to provide a patch that adds a new *ELisp* function that calls
`malloc_trim`, which you can then add to `post-gc-hook` in your init
file when your usage pattern makes it useful.
Stefan
- bug#45200: [PATCH] Force Glibc to free the memory freed, Konstantin Kharlamov, 2021/02/02
- bug#45200: [PATCH] Force Glibc to free the memory freed, Stefan Monnier, 2021/02/02
- bug#45200: [PATCH] Force Glibc to free the memory freed,
Stefan Monnier <=
- bug#45200: [PATCH] Force Glibc to free the memory freed, martin rudalics, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, Konstantin Kharlamov, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, martin rudalics, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, Konstantin Kharlamov, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, Konstantin Kharlamov, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, martin rudalics, 2021/02/03
- bug#45200: [PATCH] Force Glibc to free the memory freed, Konstantin Kharlamov, 2021/02/03