From: Greg KH <gregkh@linuxfoundation.org>
To: "Theodore Y. Ts'o" <tytso@mit.edu>,
Dan Williams <dan.j.williams@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>,
Paul McKenney <paulmck@linux.vnet.ibm.com>,
John Stultz <john.stultz@linaro.org>,
acme@redhat.com, frederic@kernel.org,
Jonathan Corbet <corbet@lwn.net>,
Andy Lutomirski <luto@kernel.org>,
Marc Zyngier <marc.zyngier@arm.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Will Deacon <will.deacon@arm.com>,
Mark Brown <broonie@kernel.org>
Subject: Re: [patch 2/2] Documentation/process: Add tip tree handbook
Date: Thu, 8 Nov 2018 14:33:29 -0800 [thread overview]
Message-ID: <20181108223329.GA19357@kroah.com> (raw)
In-Reply-To: <20181108221947.GJ1080@thunk.org>
On Thu, Nov 08, 2018 at 05:19:47PM -0500, Theodore Y. Ts'o wrote:
> On Thu, Nov 08, 2018 at 01:04:49PM -0800, Greg KH wrote:
> > > (Also note that even with fast SSD's and/or everything in page cache,
> > > runnning "tag --contains <COMMITID>" will take a good 3-4 seconds, and
> > > if the git packs are not in the page cache, and/or you're unfortunate
> > > enough to have your git trees on an HDD.... it's not pretty.)
> >
> > I recommend the "static cache" or whatever that thing is called, that
> > helps out a _LOT_ with stuff like this. For the kernel tree, which is
> > never rebased, it speeds up this so much.
>
> At the risk of asking a stupid question, which cache is this? I don't
> think it's the untrackedCache; is it the BitmapHashCache?
It's the 'commitGraph', here's the article I was trying to remember I
learned this from:
https://blogs.msdn.microsoft.com/devops/2018/06/25/supercharging-the-git-commit-graph/
greg k-h
next prev parent reply other threads:[~2018-11-08 22:33 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-07 17:10 [patch 0/2] Documentation/process: Add subsystem/tree handbook Thomas Gleixner
2018-11-07 17:10 ` [patch 1/2] Documentation/process: Add maintainer handbooks section Thomas Gleixner
2018-11-07 17:10 ` [patch 2/2] Documentation/process: Add tip tree handbook Thomas Gleixner
2018-11-07 17:44 ` Thomas Gleixner
2018-11-07 19:57 ` Paul E. McKenney
2018-11-07 19:38 ` Paul E. McKenney
2018-11-08 7:05 ` Ingo Molnar
2018-11-08 7:14 ` Ingo Molnar
2018-11-08 7:19 ` Ingo Molnar
2018-11-08 7:30 ` Ingo Molnar
2018-11-08 7:40 ` Ingo Molnar
2018-11-08 9:12 ` Peter Zijlstra
2018-11-08 11:05 ` Greg Kroah-Hartman
2018-11-08 17:19 ` Dan Williams
2018-11-08 17:24 ` Borislav Petkov
2018-11-08 17:40 ` Paul E. McKenney
2018-11-08 19:58 ` Thomas Gleixner
2018-11-08 20:05 ` Paul E. McKenney
2018-11-08 21:06 ` Greg KH
2018-11-08 21:08 ` Greg KH
2018-11-08 22:38 ` Thomas Gleixner
2018-11-08 20:14 ` Theodore Y. Ts'o
2018-11-08 20:22 ` Thomas Gleixner
2018-11-08 21:04 ` Greg KH
2018-11-08 22:19 ` Theodore Y. Ts'o
2018-11-08 22:33 ` Greg KH [this message]
2018-11-08 22:56 ` Dan Williams
2018-11-08 7:46 ` Ingo Molnar
2018-11-08 8:04 ` Ingo Molnar
2018-11-08 8:13 ` Ingo Molnar
2018-11-08 8:18 ` Ingo Molnar
2018-11-08 8:30 ` Ingo Molnar
2018-11-07 19:48 ` [patch 0/2] Documentation/process: Add subsystem/tree handbook Jonathan Corbet
2018-11-07 19:58 ` Dan Williams
2018-11-07 20:51 ` Thomas Gleixner
2018-11-08 14:49 ` Jonathan Corbet
2018-11-08 15:05 ` Peter Zijlstra
2018-11-08 15:19 ` Jonathan Corbet
2018-11-08 16:05 ` Paul E. McKenney
2018-11-08 16:21 ` Theodore Y. Ts'o
2018-11-08 16:32 ` Mark Brown
2018-11-08 17:32 ` Dan Williams
2018-11-13 23:15 ` Mark Brown
2018-11-08 16:33 ` Jonathan Corbet
2018-11-08 19:46 ` Theodore Y. Ts'o
2018-11-08 15:49 ` Thomas Gleixner
2020-12-17 15:05 ` Borislav Petkov
2020-12-17 17:53 ` Jonathan Corbet
2020-12-17 17:58 ` Borislav Petkov
2018-11-12 5:52 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2021-09-13 15:39 [PATCH 0/2] doc: Add tip maintainer's handbook Borislav Petkov
2021-09-13 15:39 ` [PATCH 2/2] Documentation/process: Add tip tree handbook Borislav Petkov
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