From: Derrick Stolee <stolee@gmail.com>
Date: Wed, 23 Jan 2019 01:19:25 GMT
Subject: Re: [PATCH 10/14] pack-objects: add trace2 regions
Message-ID: <75ceaf05-d479-67f8-3684-c8ba948f2bda@gmail.com>
In-Reply-To: <1aa79cb126ec43dae1c01d3ce740d9b687d69517.1548192131.git.gitgitgadget@gmail.com>

On 1/22/2019 4:22 PM, Derrick Stolee via GitGitGadget wrote:
> From: Derrick Stolee <dstolee@microsoft.com>
>
> When studying the performance of 'git push' we would like to know
> how much time is spent at various parts of the command. One area
> that could cause performance trouble is 'git pack-objects'.
>
> Add trace2 regions around the three main actions taken in this
> command:
>
> 1. Enumerate objects.
> 2. Prepare pack.
> 3. Write pack-file.
>
> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>

We've had this patch in our private branch for a while, and is how we 
discovered the need for the sparse push algorithm [1]. We will use it to 
measure it's effectiveness as new Microsoft users onboard to the new 
algorithm.

Thanks,

-Stolee

[1] https://public-inbox.org/git/pull.89.v5.git.gitgitgadget@gmail.com/