Balint Reczey

Having the casting in the generated code would be much nicer because that generated code is never modified manually and is rarely looked at.

As a possible workaround setting `mitigations=off` on the kernel command line restores the performance for newer kernels: ``` Time % increase from jammy-v0.8.2-93-g79127fb-6.2.0-33-generic to jammy-v0.8.2-93-g79127fb-6.5.0-15-generic-mitigations-off comparing 49 run pairs. real1...

Oddly while the `bash` build shows the improvement with `callgrind` and firebuild's `Release` build, perftest shows a slight slowdown that may be within measurement error. This should be re-measured with...

The noise is still too high with more tests run. ``` Time % increase from jammy-v0.8.2-93-g79127fb-6.5.0-15-generic-mitigations-off to jammy-v0.8.2-94-g2c5ed1b-6.5.0-15-generic-mitigations-off comparing 1470 run pairs. real1 user1 sys1 Min. :-9.75610 Min. :-6.31692 Min....

Ccache uses Redis via hiredis, which may be worth looking at: https://github.com/ccache/ccache/wiki/Redis-storage https://github.com/redis/hiredis

`obj_cache` description for reference: https://github.com/firebuild/firebuild/blob/5b6144743b617b0db80e61cf637ef875acfaa75a/src/firebuild/obj_cache.h#L41-L60 `blob_cache` entries also need to be retrieved from the remote server and retrieving them one by one introduces extra delays. One way of decreasing the...

... > Internally, I think Firebuild might desire one architectural change: to make this operation asynchronous. I don't know whether synchronously waiting for the server at every operation would cause...

> Alternatively: > > We could keep separate `fbbcomm` messages, but merge them in the supervisor as early as possible. > > Practically in `process_fbb_adaptor.{cc,h}` (I really want to eliminate...

Thank you @sgammon for the very detailed insights. > If I may, I'd like to jump in and offer some thoughts in this thread. I'm the author of [Buildless](https://less.build), a...

For the record I've tested rebuilding the following packages with `firebuild` on Ubuntu 22.40 and none of the builds failed: ``` rbalint@gaia:~/projects/firebuild-infra/distro-rebuilds/ubuntu$ grep erlang jammy-universe-pkgs-filtered erlang-asciideck erlang-base64url erlang-bbmustache erlang-bear erlang-bitcask...