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[104.178.186.189]) by smtp.gmail.com with ESMTPSA id u9-20020a0562141c0900b006915269936bsm5528764qvc.25.2024.03.26.13.57.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Mar 2024 13:57:57 -0700 (PDT) Date: Tue, 26 Mar 2024 16:57:48 -0400 From: Taylor Blau To: Junio C Hamano Cc: Jeff King , git@vger.kernel.org Subject: Re: What's cooking in git.git (Mar 2024, #08; Tue, 26) Message-ID: References: Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Tue, Mar 26, 2024 at 01:45:59PM -0700, Junio C Hamano wrote: > Taylor Blau writes: > > >> The pack-bitmap machinery has been extended to write bitmaps for > >> pseudo-merges, which are imaginary commits which act as octopus > >> merges covering groups of the un-bitmapped parts of history at > >> reference tips. This is good for ... what ...? > > > > Instead of "this is good for ... what ...", let me know what you think > > of: > > > > This allows for greater bitmap coverage (and, thus, performance when > > using bitmaps) of repositories with many references which ordinarily > > would not receive full coverage. > > Much better than "god for ... what ..." ;-) > > Now if it gets summarized in 2-5 lines, we have something we can > use. Sure, try this: The pack-bitmap machinery learned to write pseudo-merge bitmaps, which act as imaginary octopus merges covering un-bitmapped reference tips. This enhances bitmap coverage, and thus, performance, for repositories with many references using bitmaps. Thanks, Taylor