From: Theodor Thornhill <theo@thornhill.no>
To: Yuan Fu <casouri@gmail.com>
Cc: emacs-devel <emacs-devel@gnu.org>,
Stefan Monnier <monnier@iro.umontreal.ca>
Subject: Re: Tree-sitter indentation for js-mode & cc-mode
Date: Fri, 28 Oct 2022 11:10:18 +0200 [thread overview]
Message-ID: <87mt9ggvph.fsf@thornhill.no> (raw)
In-Reply-To: <425E0075-3F44-4832-BA2E-61E7D0A26FF4@gmail.com>
Yuan Fu <casouri@gmail.com> writes:
>>
>>>> looking up way to much the root of the tree, but you know the internals
>>>> here better than me. Is this something we can optimize away? See the
>>>> attached report at the bottom.
>>>
>>> This is very strange, I need to look into it.
>>>
>>
>> I'm happy to provide more info and profiling, as well as testing if need be!
>
> I just tried running treesit-buffer-root-node and treesit-node-at
> 10000 times in the end of buffer and they are pretty fast, so I don’t
> know why the benchmark says 99% time is spent in
> treesit-buffer-root-node. Could you share the benchmark code and test
> file? Thanks!
>
> Yuan
Absolutely. I ran the test again - see test file and new report in
attachments.
You need to `M-x eval-buffer` in `treesit.el` to avoid the compiled
functions to get better profile report, then in the testfile:
M-x profiler-start
C-x h ;; (mark-whole-buffer)
C-i ;; (indent-for-tab-command)
;; --- waaaaait
M-x profiler-stop
M-x profiler-report
There's no test code for this, just running the commands sequentially
and get the report :-)
Are we parsing the whole file over and over in treesit-buffer-root-node?
Do we for some reason not hit the early return?
The js-file [0] is taken from [1] and duplicated and messed up
indentation. Report [2] was messed up by dpaste it seems. Gmail didn't
want the files as attachments, so paste it is :-)
Hope this is useful!
Theo
[0]: https://dpaste.org/dwj3Q
[1]: https://raw.githubusercontent.com/TheAlgorithms/JavaScript/master/Search/BinarySearch.js
[2]: https://dpaste.org/aogkm
Theo
next prev parent reply other threads:[~2022-10-28 9:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-27 1:43 Tree-sitter indentation for js-mode & cc-mode Yuan Fu
2022-10-27 9:11 ` Theodor Thornhill
2022-10-27 9:28 ` Theodor Thornhill
2022-10-27 9:58 ` Theodor Thornhill
2022-10-27 15:21 ` Yuan Fu
2022-10-27 18:36 ` Theodor Thornhill
2022-10-28 8:15 ` Yuan Fu
2022-10-28 8:59 ` Theodor Thornhill
2022-10-28 9:10 ` Theodor Thornhill [this message]
2022-10-28 19:43 ` Yuan Fu
2022-10-28 19:49 ` Theodor Thornhill
2022-10-29 1:05 ` Yuan Fu
2022-10-29 5:53 ` Eli Zaretskii
2022-10-29 6:54 ` Yuan Fu
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