Re: Partial Clone, and a strange slow rev-list call on fetch

From: Derrick Stolee <stolee@gmail.com>
Date: Jun 4, 2021, 13:21 UTC
Message-ID: <5ce5286c-9390-7cb5-a039-8e26be990b8d@gmail.com>
In-Reply-To: <CAPMMpogSepMk07HVtwO8qKaHx2SHmYVB+vnrnWwVWBNo8U5hAQ@mail.gmail.com>

On 6/3/2021 5:10 PM, Tao Klerks wrote:

Show 11 quoted lines

> On Wed, Jun 2, 2021 at 1:18 PM Derrick Stolee <stolee@gmail.com> wrote:
> 
>> could you re-run the scenario with GIT_TRACE2_PERF=1 which will
>> give the full Git process stack as we reach that rev-list call.
> 
> Sorry about the delay, I've been trying to reproduce... reproduceably :)
> 
> I now have a whole file of examples and observations, attached (I
> assume text attachments are allowed on this mailing list?), which
> should be reproducible for anyone as I was able to use the linux
> kernel repo to illustrate all cases.

I appreciate that you took so much time to investigate here. You have convinced me that there are deeper things going on than just the "unshallow, but with filters this time" situation.

I have created an internal issue for my team to investigate this when we have capacity for it. I don't think it will happen this month, so if anyone else has the time now then don't wait for us.

Thanks, -Stolee