79 lines
3.4 KiB
Markdown
79 lines
3.4 KiB
Markdown
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[Source](http://lkml.iu.edu/hypermail/linux/kernel/0504.0/2022.html "Permalink to Linux-Kernel Archive: Re: Kernel SCM saga..")
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# Linux-Kernel Archive: Re: Kernel SCM saga..
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# Re: Kernel SCM saga..
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**From: **Linus Torvalds
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**Date: ** Thu Apr 07 2005 - 23:41:58 EST
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* **Next message: ** [ Evgeniy Polyakov: "Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1]"][1]
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* **Previous message: ** [ David S. Miller: "Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1]"][2]
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* **In reply to: ** [ Chris Wedgwood: "Re: Kernel SCM saga.."][3]
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* **Next in thread: ** [ kfogel: "Re: Kernel SCM saga.."][4]
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* **Messages sorted by: [**[ date ]][5] [[ thread ]][6] [[ subject ]][7] [[ author ]][8]
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* * *
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On Thu, 7 Apr 2005, Chris Wedgwood wrote:
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>_ _
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>_ I'm playing with monotone right now. Superficially it looks like it_
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>_ has tons of gee-whiz neato stuff... however, it's *agonizingly* slow._
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>_ I mean glacial. A heavily sedated sloth with no legs is probably_
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>_ faster._
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Yes. The silly thing is, at least in my local tests it doesn't actually
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seem to be _doing_ anything while it's slow (there are no system calls
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except for a few memory allocations and de-allocations). It seems to have
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some exponential function on the number of pathnames involved etc.
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I'm hoping they can fix it, though. The basic notions do not sound wrong.
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In the meantime (and because monotone really _is_ that slow), here's a
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quick challenge for you, and any crazy hacker out there: if you want to
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play with something _really_ nasty (but also very _very_ fast), take a
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look at kernel.org:/pub/linux/kernel/people/torvalds/.
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First one to send me the changelog tree of sparse-git (and a tool to
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commit and push/pull further changes) gets a gold star, and an honorable
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mention. I've put a hell of a lot of clues in there (*).
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I've worked on it (and little else) for the last two days. Time for
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somebody else to tell me I'm crazy.
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Linus
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(*) It should be easier than it sounds. The database is designed so that
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you can do the equivalent of a nonmerging (ie pure superset) push/pull
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with just plain rsync, so replication really should be that easy (if
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somewhat bandwidth-intensive due to the whole-file format).
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Never mind merging. It's not an SCM, it's a distribution and archival
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mechanism. I bet you could make a reasonable SCM on top of it, though.
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Another way of looking at it is to say that it's really a content-
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addressable filesystem, used to track directory trees.
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-
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the body of a message to majordomo@xxxxxxxxxxxxxxx
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Please read the FAQ at <http://www.tux.org/lkml/>
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* * *
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* **Next message: ** [ Evgeniy Polyakov: "Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1]"][1]
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* **Previous message: ** [ David S. Miller: "Re: [Fwd: Re: connector is missing in 2.6.12-rc2-mm1]"][2]
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* **In reply to: ** [ Chris Wedgwood: "Re: Kernel SCM saga.."][3]
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* **Next in thread: ** [ kfogel: "Re: Kernel SCM saga.."][4]
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* **Messages sorted by: [**[ date ]][5] [[ thread ]][6] [[ subject ]][7] [[ author ]][8]
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[1]: http://lkml.iu.edu/2023.html
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[2]: http://lkml.iu.edu/2021.html
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[3]: http://lkml.iu.edu/2017.html
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[4]: http://lkml.iu.edu/1623.html
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[5]: http://lkml.iu.edu/date.html#2022
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[6]: http://lkml.iu.edu/index.html#2022
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[7]: http://lkml.iu.edu/subject.html#2022
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[8]: http://lkml.iu.edu/author.html#2022
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