!VhzbGHamdfMiGxpXyg:robins.wtf

NixOS Incus and LXC

49 Members
lxc, lxd, incus discussions related to NixOS16 Servers

Load older messages


SenderMessageTime
4 Aug 2025
@adam:robins.wtfadamcstephensodd. what's the attic backend?17:06:26
@adam:robins.wtfadamcstephensfilesystem?17:06:30
@hexa:lossy.networkhexagarage17:06:32
@hexa:lossy.networkhexanvme17:06:33
@adam:robins.wtfadamcstephensfyi both garage and attic each have their own compression and chunking17:07:22
@hexa:lossy.networkhexa
      compression.type = "none"; # garage already compresses
17:07:45
@hexa:lossy.networkhexaext417:09:59
@adam:robins.wtfadamcstephensshould be fine17:11:25
@hexa:lossy.networkhexathis setup runs on my rk3588 (rock5b) board17:11:43
@adam:robins.wtfadamcstephensCPU bound?17:18:42
@hexa:lossy.networkhexaimage.png
Download image.png
17:20:52
@hexa:lossy.networkhexathe disk is doing 10k+ write ops/s17:21:13
@hexa:lossy.networkhexa970 evo+ 2tb17:21:54
@hexa:lossy.networkhexamaybe too many small writes17:22:37
@hexa:lossy.networkhexaor the disk becomes too warm17:23:14
@hexa:lossy.networkhexa
nvme-pci-0100
Adapter: PCI adapter
Composite:    +83.8°C  (low  = -273.1°C, high = +84.8°C)
                       (crit = +84.8°C)
Sensor 1:     +83.8°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +95.8°C  (low  = -273.1°C, high = +65261.8°C)
17:23:16
@hexa:lossy.networkhexaso yeah, I think the biggest part of cuda is not building but copying17:24:19
@hexa:lossy.networkhexaand copying with nix is inherently slow17:24:23
@hexa:lossy.networkhexawondering if anyone ever did a comparison how expensive ssh is compared to https17:24:58
@hexa:lossy.networkhexa* wondering if anyone ever did a comparison how expensive ssh is compared to https for copying vs substition17:25:07
@adam:robins.wtfadamcstephensyeah that's pretty warm. could be throttled19:11:06
@adam:robins.wtfadamcstephensare you chunking in attic?19:11:26
@hexa:lossy.networkhexaapparently19:14:01
@hexa:lossy.networkhexa
      # Data chunking
      #
      # Warning: If you change any of the values here, it will be
      # difficult to reuse existing chunks for newly-uploaded NARs
      # since the cutpoints will be different. As a result, the
      # deduplication ratio will suffer for a while after the change.
      chunking = {
        # The minimum NAR size to trigger chunking
        #
        # If 0, chunking is disabled entirely for newly-uploaded NARs.
        # If 1, all NARs are chunked.
        nar-size-threshold = 64 * 1024; # 64 KiB

        # The preferred minimum size of a chunk, in bytes
        min-size = 16 * 1024; # 16 KiB

        # The preferred average size of a chunk, in bytes
        avg-size = 64 * 1024; # 64 KiB

        # The preferred maximum size of a chunk, in bytes
        max-size = 256 * 1024; # 256 KiB
      };
19:14:05
@hexa:lossy.networkhexalooks like a default config tbh 😄 19:14:12
@hexa:lossy.networkhexalooks like outdated https://docs.attic.rs/admin-guide/chunking.html 😄 19:17:41
@hexa:lossy.networkhexahm no19:18:18
@hexa:lossy.networkhexabut my values are still off from the docs19:19:18
@adam:robins.wtfadamcstephensi turned off chunking on mine20:13:05
@adam:robins.wtfadamcstephensand let garage do the chunking20:14:03

Show newer messages


Back to Room ListRoom Version: 10