Simon Tournier <zimon.touto...@gmail.com> skribis:

> Hi Jack,
>
> On Tue, 30 May 2023 at 16:55, Jack Hill <jackh...@jackhill.us> wrote:
>
>> $ ~/.config/guix/current/lib/guile/3.0/site-ccache/gnu [env]$ sudo compsize .
>> Processed 595 files, 1659 regular extents (1659 refs), 0 inline.
>> Type       Perc     Disk Usage   Uncompressed Referenced
>> TOTAL       21%       36M         173M         173M
>> none       100%       16K          16K          16K
>> zstd        21%       36M         173M         173M
>
> Cool!  Could you do (or anyone else with btrfs),
>
>     guix time-machine --commit=d62c9b2671be55ae0305bebfda17b595f33797f2 \
>          -- describe
>     guix time-machine --commit=a099685659b4bfa6b3218f84953cbb7ff9e88063 \
>          -- describe
>
> then report the size (compsize) of
>
> /gnu/store/nqrb3g4l59wd74w8mr9v0b992bj2sd1w-guix-d62c9b267-modules/lib/guile/3.0/site-ccache/gnu
> /gnu/store/s6rqlhqr750k44ynkqqj5mwjj2cs2yln-guix-a09968565-modules/lib/guile/3.0/site-ccache/gnu
>
> ?
>
> Cheers,
> simon

Hi,

With a BTRFS filesystem compressed with zstd:3, I get:

--8<---------------cut here---------------start------------->8---
# compsize 
/gnu/store/nqrb3g4l59wd74w8mr9v0b992bj2sd1w-guix-d62c9b267-modules/lib/guile/3.0/site-ccache/gnu
Processed 503 files, 1317 regular extents (1317 refs), 0 inline.
Type       Perc     Disk Usage   Uncompressed Referenced  
TOTAL       27%       40M         144M         144M       
none       100%       10M          10M          10M       
zstd        22%       30M         133M         133M

# compsize 
/gnu/store/s6rqlhqr750k44ynkqqj5mwjj2cs2yln-guix-a09968565-modules/lib/guile/3.0/site-ccache/gnu
Processed 530 files, 1169 regular extents (1169 refs), 0 inline.
Type       Perc     Disk Usage   Uncompressed Referenced  
TOTAL       19%       22M         116M         116M       
none       100%       32K          32K          32K       
zstd        19%       22M         116M         116M
--8<---------------cut here---------------end--------------->8---

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