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Motiejus Jakštys 2022-11-30 12:04:12 +02:00
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@ -20,20 +20,19 @@ pre-cached `nscd`, ~8 milliseconds with `turbonss`.
Project status Project status
-------------- --------------
The project is finished and is not recommended for production; just use nscd. The project is finished and was never used recommended for production. If you
Turbonss duly implements the full user/group API in `src/libnss.zig`: feel free are considering using turbonss, try nscd first. Turbonss is only 2-5 times
to copy that. turbonss is only 2-5 times faster than nscd, which usually does faster than pre-warmed nscd, which usually does not matter enough to go through
not matter (including for my original use case). the hoops of using a nonstandard nss library in the first place.
Yours truly (the author) worked on this for about 7 months. And when this was Yours truly worked on this for about 7 months. This was also my first zig
finished it turned out that just slapping nscd on top of the existing NSS project which I never went to (nor really needed to) come back and clean up.
implementation is fast enough.
Dependencies Dependencies
------------ ------------
1. zig v0.10. turbonss uses stage1 (the C++ version) and is not compatible with 1. zig v0.10. turbonss is implemented in stage1, so will not work with zig
stage2. v0.11+.
2. [cmph][cmph]: bundled with this repository. 2. [cmph][cmph]: bundled with this repository.
Trying it out Trying it out
@ -43,7 +42,7 @@ Clone, compile and test first:
$ git clone --recursive https://git.sr.ht/~motiejus/turbonss $ git clone --recursive https://git.sr.ht/~motiejus/turbonss
$ zig build test $ zig build test
$ zig build -Dtarget=x86_64-linux-gnu.2.31 -Dcpu=x86_64_v3 -Drelease-safe=true $ zig build -Dtarget=x86_64-linux-gnu.2.16 -Dcpu=baseline -Drelease-safe=true
One may choose different options, depending on requirements. Here are some One may choose different options, depending on requirements. Here are some
hints: hints:
@ -54,8 +53,19 @@ hints:
3. `-Drelease-small=true` for smallest binary sizes. 3. `-Drelease-small=true` for smallest binary sizes.
4. `-Dstrip=true` to strip debug symbols. 4. `-Dstrip=true` to strip debug symbols.
Test it on a real system For reference, size of the shared library and helper binaries when compiled
------------------------ with `-Dstrip=true -Drelease-small=true`:
17K Nov 30 11:53 turbonss-analyze
16K Nov 30 11:53 turbonss-getent
17K Nov 30 11:53 turbonss-makecorpus
166K Nov 30 11:53 turbonss-unix2db
22K Nov 30 11:53 libnss_turbo.so.2.0.0
Many thanks to Ulrich Drepper for [teaching how to link it properly][dso].
Test turobnss on a real system
------------------------------
`db.turbo` is the TurboNSS database file. To create one from `/etc/group` and `db.turbo` is the TurboNSS database file. To create one from `/etc/group` and
`/etc/passwd`, use `turbonss-unix2db`: `/etc/passwd`, use `turbonss-unix2db`:
@ -151,9 +161,10 @@ by 10x (to 100k each), the difference becomes even crazier:
Documentation Documentation
------------- -------------
Architecture is detailed in `docs/architecture.md` - Architecture is detailed in `docs/architecture.md`
Development notes are in `docs/development.md` - Development notes are in `docs/development.md`
[nsswitch]: https://linux.die.net/man/5/nsswitch.conf [nsswitch]: https://linux.die.net/man/5/nsswitch.conf
[id]: https://linux.die.net/man/1/id [id]: https://linux.die.net/man/1/id
[cmph]: http://cmph.sourceforge.net/ [cmph]: http://cmph.sourceforge.net/
[dso]: https://akkadia.org/drepper/dsohowto.pdf