From: Felix Lechner via "Development of GNU Guix and the GNU System distribution." <guix-devel@gnu.org>
To: guix-devel@gnu.org
Subject: Are 'guix gc' stats exaggerated?
Date: Sun, 26 May 2024 13:13:45 -0700 [thread overview]
Message-ID: <87bk4stjpi.fsf@lease-up.com> (raw)
Hi,
Today I ran 'guix gc' on equipment with an ext4 root partition. It had
these space characteristics beforehand:
Filesystem Size Used Avail Use% Mounted on
/dev/dm-3 309047680 157252980 138126064 54% /
or for human eyes:
/dev/dm-3 295G 150G 132G 54% /
After the run, the drive showed:
/dev/dm-3 309047680 88267956 207111088 30% /
or for human eyes:
/dev/dm-3 295G 85G 198G 30% /
By my math, about 65.8 GiB were recovered.
When 'guix gc' was done, it announced:
[184389 MiB] deleting '/gnu/store/...'
deleting `/gnu/store/trash'
deleting unused links...
note: currently hard linking saves 59224.03 MiB
guix gc: freed 110,649.49 MiBs
Seeing the 184389 MiB number, or 180 GiB, already made me suspicious.
It exceeded my drive usage by 30 GiB. Even the more conservative 110649
MiB "freed," however, are off by a mile. That would have been 108 GiB,
or 42 GiB more than the space actually recovered.
Am I looking at those numbers the wrong way? Thanks!
Kind regards
Felix
next reply other threads:[~2024-05-26 20:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-26 20:13 Felix Lechner via Development of GNU Guix and the GNU System distribution. [this message]
2024-05-27 9:10 ` Are 'guix gc' stats exaggerated? raingloom
2024-05-28 2:47 ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-05-28 9:01 ` Efraim Flashner
2024-05-31 22:03 ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-06-02 8:24 ` Daemon deduplication and btrfs compression [was Re: Are 'guix gc' stats exaggerated?] Efraim Flashner
2024-06-06 14:17 ` Are 'guix gc' stats exaggerated? Ludovic Courtès
2024-06-06 19:32 ` Felix Lechner via Development of GNU Guix and the GNU System distribution.
2024-06-09 9:19 ` Efraim Flashner
2024-06-09 9:30 ` Andreas Enge
2024-06-17 11:24 ` Ludovic Courtès
2024-05-31 16:33 ` Simon Tournier
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