| 25 Sep 2025 |
Tristan Ross | Kinda | 22:42:24 |
Tristan Ross | The noise from my audio interface is less noticable | 22:42:34 |
Tristan Ross | And pkgsLLVM.linux took 20 minutes with a GCC built kernel where with the LLVM kernel, it took 15 minutes | 22:43:02 |
Tristan Ross | I ran the same build under the two kernels 3 times in a row on each kernel and got the same 5 minutes difference | 22:43:45 |
Alex | In reply to @rosscomputerguy:matrix.org The noise from my audio interface is less noticable It sounds like there is interference between your CPU and your audio interface...
I mean, it shouldn't be driving the sound card differently just because of differences in compiler optimisations and code layout, right? | 22:44:24 |
Tristan Ross | The thing is I'm not sure | 22:44:56 |
Tristan Ross | I shouldn't even be getting noise in the first place since it's over USB. Even on my dedicated USB card, I actually get worse audio quality. | 22:45:22 |
Alex | In reply to @rosscomputerguy:matrix.org I ran the same build under the two kernels 3 times in a row on each kernel and got the same 5 minutes difference This could be due to ld.bfd vs lld (assuming these are what the two stdenvs use for linking). Worth exploring... | 22:45:31 |
Tristan Ross | I was thinking about asking some people at Ampere since I do have an Ampere CPU and the performance team has done a lot of testing as I've heard. | 22:46:13 |
dramforever | lld should be faster than ld.bfd at processing linker relaxations... maybe | 22:48:05 |
dramforever | i'm not sure how you would go about profiling this though | 22:48:21 |
dramforever | oh nevermind it's not really building a riscv kernel | 22:48:42 |
Alex | In reply to @dramforever:matrix.org i'm not sure how you would go about profiling this though IIRC there is a function for "just change the linker" for use with replaceStdenv, so the two can be compared in isolation. | 22:49:19 |
| 26 Sep 2025 |
| Snektron joined the room. | 19:10:44 |
Snektron | this group exists | 19:12:14 |
Snektron | hello | 19:12:18 |
Snektron | i run nixos on my vf2 | 19:12:26 |
dramforever | hello | 19:32:32 |
dramforever | what do you use it for | 19:33:02 |
Snektron | gathering dust | 19:41:53 |
Alex | In reply to @snektron:matrix.org gathering dust Great, then you don't even need it to work | 20:58:57 |
| 27 Sep 2025 |
| picostove joined the room. | 17:43:32 |
| 29 Sep 2025 |
| @brian:bmcgee.ie left the room. | 13:40:52 |
| 30 Sep 2025 |
| @lotte:chir.rs changed their profile picture. | 10:55:06 |
| @jellyterra:matrix.org left the room. | 15:49:24 |
| 17lifers (at mikuplushfarm) joined the room. | 16:05:31 |
| 1 Oct 2025 |
| 17lifers (at mikuplushfarm) left the room. | 18:05:40 |
| 2 Oct 2025 |
| @roedimqf:ruhr-uni-bochum.de left the room. | 06:31:57 |
| 4 Oct 2025 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) changed their profile picture. | 08:41:05 |
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