| 12 Sep 2025 |
 tgerbet | Arf sorry I will push a fix | 08:39:28 |
| tgerbet | Done https://github.com/NixOS/infra/pull/839
I cannot be trusted without typechecking 😅 | 09:51:50 |
|  teutat3s joined the room. | 10:39:13 |
|  Max changed their display name from HAL9000 to Max. | 12:48:36 |
 Philip Taron (UTC-8) | Folks, what does it take to upgrade the Nix that Hydra uses to a new version? Today it's on 2.29.2 per the footer. 2.30+ has pretty nice memory-size wins. | 17:21:32 |
 vcunat | Hydra the SW is coupled to the Nix version it's using. (though I don't know how much) | 17:28:06 |
 K900 | Fairly heavily | 17:29:05 |
| K900 | But also RAM is not an issue | 17:29:05 |
| K900 | Generally | 17:29:06 |
| K900 | (and eval is generally not an issue most of the time) | 17:29:30 |
| vcunat | We don't seem to be really running into RAM shortage, though there's not a huge margin sometimes. (zram serves as a buffer) | 17:29:34 |
| vcunat | * We don't seem to be really running into RAM shortage on evaluations, though there's not a huge margin sometimes. (zram serves as a buffer) | 17:29:50 |
| vcunat | * We don't seem to be really running into RAM shortage on Hydra evaluations, though there's not a huge margin sometimes. (zram serves as a buffer) | 17:29:56 |
 @wolfgangwalther:matrix.org | CI's Eval also got faster with 2.30, although I don't know how much that was related to RAM usage and hitting swap otherwise. | 17:31:51 |
| Philip Taron (UTC-8) | What's the unit in these Hydra metrics for "allocations"? https://hydra.nixos.org/job/nixpkgs/trunk/metrics/metric/nix-env.qa.allocations | 18:03:45 |
| Philip Taron (UTC-8) | Number of mallocs? | 18:04:00 |
| K900 | Yes, but also it's not really a relevant metric | 18:04:57 |
| Philip Taron (UTC-8) | As in, when it goes up or goes down, not really an impact on stuff? | 18:05:28 |
| K900 | Yes | 18:06:09 |
| K900 | Generally none of the metrics there are particularly relevant | 18:06:22 |
| K900 | Because again, eval is not really an issue | 18:06:27 |
| Philip Taron (UTC-8) | Fair, I'm just interested in what they are in the first place | 18:07:45 |
| Philip Taron (UTC-8) | maxresident I'm assuming means the largest amount of pages that the process actually occupied at any one point during its execution (not just virtual) | 18:09:09 |
| 13 Sep 2025 |
| Philip Taron (UTC-8) | This resulted in the following PR.
https://github.com/NixOS/nixpkgs/pull/442477 | 00:33:04 |
|  lennart joined the room. | 06:40:43 |
| lennart | moin, we are sunsetting a MacMini M1 2020 with 32GB and 1TB SSD (this model is an educated guess, will have another look if its a different model, when I'm in the office next week) at work. we are using NixOS quite a lot there, but not darwin. I could talk to my boss, if we want to donate this hardware's compute and energy consumption for a builder. does this sound interesting? are there any guides on how to set up a darwin builder? which project (CI, ofborg, community builder, etc) is in need? best! | 08:06:06 |
 sinan | getting 504 on wiki.nixos.org
| 08:54:44 |
| vcunat | I noticed that it is often unreachable lately:
https://prometheus.nixos.org/query?g0.expr=probe_success%7Bjob%3D%22blackbox-https_success%22%7D+%3D%3D+0&g0.show_tree=0&g0.tab=graph&g0.range_input=2d&g0.res_type=auto&g0.res_density=medium&g0.display_mode=lines&g0.show_exemplars=0 | 09:00:19 |
| vcunat | (but off the top of my head I'm afraid I don't even know who runs it) | 09:00:40 |
|  oak 🏳️🌈♥️ changed their profile picture. | 09:45:47 |
