From: Bagas Sanjaya <bagasdotme@gmail.com>
Date: Tue, 14 Sep 2021 10:39:45 GMT
Subject: Re: [PATCH v3 2/6] core.fsyncobjectfiles: batched disk flushes
Message-ID: <b992c83d-747f-55b2-cf58-f39f4ef734aa@gmail.com>
In-Reply-To: <f8b5b709e9edc363b2de7d4afa443deec0120ca0.1631590725.git.gitgitgadget@gmail.com>

On 14/09/21 10.38, Neeraj Singh via GitGitGadget wrote:
> _Performance numbers_:
> 
> Linux - Hyper-V VM running Kernel 5.11 (Ubuntu 20.04) on a fast SSD.
> Mac - macOS 11.5.1 running on a Mac mini on a 1TB Apple SSD.
> Windows - Same host as Linux, a preview version of Windows 11.
> 	  This number is from a patch later in the series.
> 
> Adding 500 files to the repo with 'git add' Times reported in seconds.
> 
> core.fsyncObjectFiles | Linux | Mac   | Windows
> ----------------------|-------|-------|--------
>                  false | 0.06  |  0.35 | 0.61
>                  true  | 1.88  | 11.18 | 2.47
>                  batch | 0.15  |  0.41 | 1.53

Interesting here the performance.

You said that core.fsyncObjectFiles=batch performed 2.5x slower than 
core.fsyncObjectFile=false on Linux and Windows, why?

-- 
An old man doll... just what I always wanted! - Clara