~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to doc/costs.txt

• browse files at revision 5029.1.1
• compare with another revision
• download diff
• download tarball
• view history from revision 5029.1.1

• reverse the comparison (5029.1.1 to 168)
• stop comparing with revision 168

Show diffs side-by-side

added

removed

doc/costs.txt

1

 

Costs

2

 

=====

3

 

 

4

 

User thought is most expensive.  User time spent waiting is next.

5

 

Developer time for the version control system is also relatively

6

 

expensive.  

7

 

 

8

 

Machine resources are cheap.  In particular; disk is generally very

9

 

cheap; an ordinary programmer earns enough to buy hundreds of GB of

10

 

disk per day.  However, it is sometimes limited, as on a laptop.

11

 

Therefore it is generally OK to trade off disk space for anything

12

 

else, but it should be possible to be compact.

13

 

 

14

 

Network round trips are very bad.

15

 

 

16

 

Consider scalability also; avoid anything worse than O(n).  Try to

17

 

avoid anything that needs e.g. to hold the whole tree in memory at any

18

 

time, or to hold the entire history of the project.

19

 

 

20

 

 

21

 

 

• Older »

Loggerhead is a web-based interface for Breezy
Version: 2.0.1