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Linux kernel developer, focusing on memory management, slab.git maintainer. Works at SUSE Labs.
vbabka

Vlastimil Babka

Reply to @oleksandr@natalenko.name
@oleksandr @algebraicterror @ljs where Cyklisto, sesedni z kola? This is where I got my only traffic fine ever, 100 CZK. https://mapy.cz/s/rapevafura
I think it's legal to continue on bike there now.
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vbabka

Vlastimil Babka

Reply to @ptesarik@fosstodon.org
@ptesarik @lkundrak @hyeyoo me, harsh to Lorenzo? Inconcievable!
I believe the book will be thicker than two short planks, though.
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vbabka
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mairacanal@fosstodon.org

mairacanal

Reply to @ljs

@ljs @vbabka Nobody talks about my dreams begin ruined by Babka, everybody just wants to praise the 3888.9% improvement

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vbabka
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ljs

Lorenzo Stoakes

Reply to @mairacanal@fosstodon.org
@mairacanal @vbabka I know, the man's a monster.

I got 3888.9 problems but a Babka ain't one, it's all of them
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vbabka

Vlastimil Babka

Reply to @pony@blovice.bahnhof.cz
@pony that doesn't look like a mechanical keyboard to me
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vbabka

Vlastimil Babka

Reply to @oleksandr@natalenko.name
@oleksandr @xbezdick @pony "guaranteed" lol
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vbabka

Vlastimil Babka

Reply to @hyeyoo
@hyeyoo @lkundrak like its author!
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vbabka

Vlastimil Babka

Reply to @pony@blovice.bahnhof.cz
@pony @oleksandr pretty sure that's a bigger factor than height
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vbabka

Vlastimil Babka

Reply to @hyeyoo
Edited 6 days ago
@hyeyoo @brauner haha amazing. We discussed it yesterday on IRC and seems the test does malloc(128MB), where malloc will prepend a header with size and mmap(sizeof(header)+128MB), which before the commit would be aligned to the 2MB boundary so the header write of few bytes would fault in the whole THP, which is of course more costly than 4KB (mostly due to memory zeroing). The test doesn't access the malloc()'d memory at all otherwise. So yeah, very specific corner case.
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vbabka

Vlastimil Babka

Reply to @wagi@mastodon.social
@wagi bcachefs next?
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vbabka

Vlastimil Babka

Reply to @jarkko
@jarkko think x86 has the same value
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vbabka

Vlastimil Babka

Reply to @ptesarik@mastodonczech.cz
@ptesarik @tomasv no... radši nic. Co kdyby to viděli v HR.
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vbabka

Vlastimil Babka

Reply to @pony@blovice.bahnhof.cz
@pony akorát že mu ho ukradl klaus
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vbabka

Vlastimil Babka

Reply to @vbabka
@oleksandr maple or r-b or radix trees?
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vbabka

Vlastimil Babka

Reply to @oleksandr@natalenko.name
@oleksandr compiler or memory barriers
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vbabka

Vlastimil Babka

Reply to @ljs
@ljs @pony @lkundrak I'm Brno they have a sewer network manager
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vbabka

Vlastimil Babka

Reply to @brauner@mastodon.social
@brauner sure, but it can be sometimes useful. Also this only fixes a regression from 6.7 but don't tell phoronix, shh...
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vbabka

Vlastimil Babka

Achieve 3888.9% performance improvement thanks to this one weird trick https://lore.kernel.org/all/202411072132.a8d2cf0f-oliver.sang@intel.com/
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lkundrak@metalhead.club

HAMMER SMASHED FILESYSTEM 🇺🇦

Reply to @jarkko

@jarkko @oleksandr @ljs @monsieuricon @vbabka i think of gpg as a vacuum cleaner too:
it sucks.

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vbabka

Vlastimil Babka

Reply to @oleksandr@natalenko.name
@oleksandr can it be used to remove a fridge from a tree?
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