improve speed of netboot build

[ryanbarry]

hi there, i'm a big fan of the work you're doing on vpsAdminOS! i'm trying to build a modest datacenter installation (order ~100 cores, disks, and users) and vpsfree.cz is really inspiring!

in the process of setting up my hosts, i was intent on pxe booting and i noticed during (the many, many) rebuilds that it was taking a long time and using only one core. i'd love to speed this up, so started to try to find out what i could do to help that and found my way to the mksquashfs call.

i'm sure this is incomplete/needs more work, but i wanted to at least share where i'm at to see if this is an area i should work on before i spend more time digging in. (also, it's been several months since i was deep in it due to life stuff, so my context here is a little outdated)

any pointers/guidance/re-orientation is welcome! cheers!

[snajpa]

I'm not sure why are you seeing mksquashfs only take one core, I'd like to hunt that down before switching to different comp algo, because everywhere we run the builds we're seeing mksquashfs go brrr on all cores (except a few serialization points along the way)

[ryanbarry]

hmm, okay yeah that makes me wonder if i misunderstood something, so i'll go digging for some more info and post back here when i have it. thanks!

…

On Mon, Nov 11, 2024, at 03:11, Pavel Snajdr wrote: I'm not sure why are you seeing mksquashfs only take one core, I'd like to hunt *that* down before switching to different comp algo, because everywhere we run the builds we're seeing mksquashfs go brrr on all cores (except a few serialization points along the way) — Reply to this email directly, view it on GitHub <#73 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAGAIAC2KOQSQTH7F34AW5T2ACGFZAVCNFSM6AAAAABRQP4MSCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDINRXHEYTCMJVGU>. You are receiving this because you authored the thread.Message ID: ***@***.***>