| 4 Aug 2025 |
adamcstephens | odd. what's the attic backend? | 17:06:26 |
adamcstephens | filesystem? | 17:06:30 |
hexa | garage | 17:06:32 |
hexa | nvme | 17:06:33 |
adamcstephens | fyi both garage and attic each have their own compression and chunking | 17:07:22 |
hexa | compression.type = "none"; # garage already compresses
| 17:07:45 |
hexa | ext4 | 17:09:59 |
adamcstephens | should be fine | 17:11:25 |
hexa | this setup runs on my rk3588 (rock5b) board | 17:11:43 |
adamcstephens | CPU bound? | 17:18:42 |
hexa |  Download image.png | 17:20:52 |
hexa | the disk is doing 10k+ write ops/s | 17:21:13 |
hexa | 970 evo+ 2tb | 17:21:54 |
hexa | maybe too many small writes | 17:22:37 |
hexa | or the disk becomes too warm | 17:23:14 |
hexa | 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 | so yeah, I think the biggest part of cuda is not building but copying | 17:24:19 |
hexa | and copying with nix is inherently slow | 17:24:23 |
hexa | wondering if anyone ever did a comparison how expensive ssh is compared to https | 17:24:58 |
hexa | * wondering if anyone ever did a comparison how expensive ssh is compared to https for copying vs substition | 17:25:07 |
adamcstephens | yeah that's pretty warm. could be throttled | 19:11:06 |
adamcstephens | are you chunking in attic? | 19:11:26 |
hexa | apparently | 19:14:01 |
hexa | # 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 | looks like a default config tbh 😄 | 19:14:12 |
hexa | looks like outdated https://docs.attic.rs/admin-guide/chunking.html 😄 | 19:17:41 |
hexa | hm no | 19:18:18 |
hexa | but my values are still off from the docs | 19:19:18 |
adamcstephens | i turned off chunking on mine | 20:13:05 |
adamcstephens | and let garage do the chunking | 20:14:03 |