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Re: Huge win, compressing a window of delta runs as a unit

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Aug 17, 2006, 08:07 UTC
Message-ID
<Pine.LNX.4.63.0608171003020.28360@wbgn013.biozentrum.uni-wuerzburg.de>
In-Reply-To
<Pine.LNX.4.63.0608170943470.28360@wbgn013.biozentrum.uni-wuerzburg.de>
Hi,
On Thu, 17 Aug 2006, Johannes Schindelin wrote:
Show 11 quoted lines
> However, I see some real problems when a public repository has a pack like 
> this: if the client is older, the server has to do some real work, 
> especially in the case of a fresh clone. It gets even worse with a public 
> HTTP repo.
> 
> The obvious short-time solution would be to make this opt-in, and use it 
> only on private repositories.
> 
> Then, one could think about how to handle the delta-chains in the pack 
> protocol (it should be easy, since you just have to store one object 
> instead of a few), and make this a "supports" option.

Oh, and I completely forgot: IIUC you have to unpack the (possibly big) delta-chain until you have the delta you really want, right? So, you might want to have a clever mechanism to keep the delta-chains short for recent objects (i.e. objects you are likely to need more often).

At least, the delta-chains should be limited by size (_not_ by number of deltas: you can have huge deltas, and if you have to unpack 5 huge deltas before getting to the huge delta you really need, it takes really long).

Ciao, Dscho

Previous: Johannes SchindelinNext: Jon Smirl
Message 4 of 36 in “Huge win, compressing a window of delta runs as a unit”
  1. Jon SmirlAug 16, 2006
  2. Shawn PearceAug 17, 2006
  3. Johannes SchindelinAug 17, 2006
  4. Johannes SchindelinAug 17, 2006
  5. Jon SmirlAug 17, 2006
  6. Johannes SchindelinAug 17, 2006
  7. Nicolas PitreAug 17, 2006
  8. Johannes SchindelinAug 17, 2006
  9. Jon SmirlAug 17, 2006
  10. Nicolas PitreAug 17, 2006
  11. Jon SmirlAug 17, 2006
  12. Nicolas PitreAug 17, 2006
  13. Jon SmirlAug 17, 2006
  14. Nicolas PitreAug 17, 2006
  15. Jon SmirlAug 17, 2006
  16. Nicolas PitreAug 17, 2006
  17. Nicolas PitreAug 18, 2006
  18. Jon SmirlAug 18, 2006
  19. Nicolas PitreAug 18, 2006
  20. Jon SmirlAug 18, 2006
  21. Nicolas PitreAug 21, 2006
  22. Shawn PearceAug 21, 2006
  23. Jakub NarebskiAug 21, 2006
  24. Jon SmirlAug 21, 2006
  25. Jon SmirlAug 18, 2006
  26. Johannes SchindelinAug 18, 2006
  27. Jon SmirlAug 18, 2006
  28. Linus TorvaldsAug 19, 2006
  29. Nicolas PitreAug 18, 2006
  30. Shawn PearceAug 21, 2006
  31. Jon SmirlAug 21, 2006
  32. Nicolas PitreAug 21, 2006
  33. Jon SmirlAug 21, 2006
  34. Nicolas PitreAug 21, 2006
  35. Nicolas PitreAug 21, 2006
  36. Nicolas PitreAug 21, 2006

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