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Re: [GSoC] Git Blog 12

From
Christian Couder <christian.couder@gmail.com>
Date
Aug 11, 2021, 08:20 UTC
Message-ID
<CAP8UFD19PG7DnFzHF42PUDQ49pr8126ucYLVF6H4mAp61+Od2g@mail.gmail.com>
In-Reply-To
<CAOLTT8S0etdnFNKuD7z5QMxWdERZ-FWimn4Sc+u+7Ra1F2WAmA@mail.gmail.com>
On Wed, Aug 11, 2021 at 5:47 AM ZheNing Hu <adlternative@gmail.com> wrote:
>
> ZheNing Hu <adlternative@gmail.com> 于2021年8月10日周二 下午10:20写道:
Show 13 quoted lines
> > I think find_subpos() called by grab_sub_body_contents() and find_wholine()
> > called by grab_person() are evidences that we are repeating iteratively.
> > But the proportion of time they occupy is too small. 0.0142% and 0.0109%
> >
>
> Using such a method may reduce some unnecessary scans [1]
> But it can do very little optimization... 1.6%.
> On the other hand, our optimization should focus on the default format of
> `git cat-file --batch`.
>
> My new idea is to need a fast path: when we use the default format,
> let us directly execute get_object() to avoid unnecessary traversal
> and checking.

I think it should be done not only when we use the default format but when we use any format that only needs the metadata provided by get_object(). This way that wouldn't be a special case fast path, but rather a generally useful optimization.

Previous: ZheNing HuNext: ZheNing Hu
Message 5 of 7 in “[GSoC] Git Blog 12”
  1. ZheNing HuAug 9, 2021
  2. Christian CouderAug 10, 2021
  3. ZheNing HuAug 10, 2021
  4. ZheNing HuAug 11, 2021
  5. Christian CouderAug 11, 2021
  6. ZheNing HuAug 13, 2021
  7. Christian CouderAug 11, 2021

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