Obtaining the size of a file

[Richard Gaskin]

John Craig wrote:

 > Richard Gaskin wrote:
 >> Turns out my test wasn't all that useful, since the OS has a
 >> bit of a bottleneck grabbing the info from 12,000+ files in
 >> a single directory.
 >>
 >> Running the same test on a folder that has only a few hundred files
 >> gives a per-file speed more on par with what we might expect:
 >>
 >> # File: 329  Total: 9ms  Per file: 0.027356ms
 >>
 >> MacBook Pro, 2.16 GHz, 2MB RAM
 >
 > For only 1 folder containing 34,782 files on MY machine (3GHz, 512Mb
 > RAM) which is not running any services.
 >
 > Time taken to get 'the detailed files';
 > 26888 millisecs = 26.888 seconds
 >
 > Size of output generated by rev for 'the detailed files';
 > 2543957 bytes = 2.5Mb
 >
 > On a busy server, the results could be considerably greater.  The
 > fact that it amounts to just under 0.8 millisecs per file is
 > irrelevant - If I need a few (or a few hundred) file sizes, I
 > still need to wait for the entire output to be generated.
 > Economical?

Given that the biggest bottleneck here appears to be the OS itself, what 
do you propose which would be more economical?

-- 
  Richard Gaskin
  Managing Editor, revJournal
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