Real-life optimization work

Posted Nov 6, 2005 8:08 UTC (Sun) by zblaxell (subscriber, #26385)
In reply to: Real-life optimization work by drag
Parent article: All hail the speed demons (O'Reillynet)

The Windows registry is organized into a vaguely tree-like recursive structure, demand-paged and cached in RAM.

The Linux filesystem is organized into a vaguely tree-like recursive structure, demand-paged and cached in RAM.

Performance-wise there isn't much difference unless you're using a braindead filesystem. The frequently accessed and recently modified stuff will be in RAM, and everything else won't.

It would be better to tweak the demand-paging of the executables. Reading 4K at a time according to quasi-random execution paths is stupid when it's faster to read 500K of data from disk than it is to read 4K, seek 492K ahead, and read 4K.

Real-life optimization work

Posted Nov 9, 2005 10:16 UTC (Wed) by njhurst (guest, #6022) [Link]

I think that the problem is each application looks in 10 different places for 10 different files.