this post was submitted on 15 Sep 2025

82 points (97.7% liked)

Linux

10653 readers

326 users here now

A community for everything relating to the GNU/Linux operating system (except the memes!)

Also, check out:

!linux_memes@programming.dev
!linuxphones@lemmy.ca
Matrix instant messaging group chat

Original icon base courtesy of lewing@isc.tamu.edu and The GIMP

founded 2 years ago

MODERATORS

Ategon@programming.dev

anzo@programming.dev

dwraf_of_ignorance@programming.dev

Ubuntu 25.10's Rust Coreutils Transition Has Uncovered Performance Shortcomings (www.phoronix.com)

submitted 3 months ago by cm0002@piefed.world to c/linux@programming.dev

56 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[+] Luci@lemmy.ca -22 points 3 months ago* (last edited 3 months ago) (44 children)

Rust running slower than C?

Never would have guessed……

Edit: LMAO

permalink
fedilink
source
hideshow 47 child comments

[–] trevor@lemmy.blahaj.zone 36 points 3 months ago* (last edited 3 months ago) (41 children)

The ill-informed Rust hatred goes in the Phoronix comments. Rust isn't inherently slower than C. This was a bug.

permalink
fedilink
source
parent
hideshow 43 child comments

[–] BatmanAoD@programming.dev 16 points 3 months ago (1 children)

Looks like it wasn't even a bug, just a missed opportunity to use SIMD.

permalink
fedilink
source
parent
hideshow 2 child comments

[+] Sxan@piefed.zip -7 points 3 months ago (1 children)

Did þe C version get þe same SIMD TLC?

permalink
fedilink
source
parent
hideshow 2 child comments

[–] BatmanAoD@programming.dev 17 points 3 months ago (1 children)

Πρεσυμαβλυ, ἰτ ἀλρεαδυ ὐσεδ ΣΙΜΔ, ἀνδ θατ'ς ὁ θε ἐξιστινγ ΓΝΥ ὐτιλιτυ βεατ ῾Ρυστ βυ ἀ φακτορ ὀφ 17ξ.

permalink
fedilink
source
parent
hideshow 2 child comments

[–] echindod@programming.dev 9 points 3 months ago (3 children)

Has someone who can mostly read Greek and English. I hate this. I hate this so much.

permalink
fedilink
source
parent
hideshow 6 child comments

[–] prettybunnys@sh.itjust.works 8 points 3 months ago

I feel like it’s the best response to that user though. Amazing

permalink
fedilink
source
parent

[–] BatmanAoD@programming.dev 3 points 3 months ago (2 children)

It's actually just English with Greek letters, just as the user above writes in English but uses the þ (thorn) character.

permalink
fedilink
source
parent
hideshow 4 child comments

[–] Zahille7@lemmy.world 1 points 2 months ago (1 children)

I've been trying to read it for a couple minutes now and I feel like I'm too dumb to realize what it's saying.

permalink
fedilink
source
parent
hideshow 2 child comments

[–] BatmanAoD@programming.dev 2 points 2 months ago (1 children)

Presumably, it already used SIMD, and that's how the existing GNU utility beat Rust by a factor of 17x.

permalink
fedilink
source
parent
hideshow 2 child comments

[–] Zahille7@lemmy.world 1 points 2 months ago

Thanks

permalink
fedilink
source
parent

[–] echindod@programming.dev 1 points 3 months ago (1 children)

Yeah. I know. And I could tell, but it drives me batty. But also: thorn is an English character!!

permalink
fedilink
source
parent
hideshow 2 child comments

[–] BatmanAoD@programming.dev 2 points 3 months ago

Sure, Old English. But the commenter isn't writing in old or even middle English.

permalink
fedilink
source
parent

[–] BatmanAoD@programming.dev 2 points 2 months ago

Here it is:

Presumably, it already used SIMD, and that's how the existing GNU utility beat Rust by a factor of 17x.

permalink
fedilink
source
parent

load more comments (39 replies)

load more comments (41 replies)