On 16 Jul 2007, at 07:26, Jim Ault wrote:

On 7/15/07 8:37 PM, "Ludovic Thébault" <[EMAIL PROTECTED]> wrote:

On Sun, 15 Jul 2007 20:58:32 +0100, Beynon, Rob wrote:

Hello, try to append the result to a file, it's a lot faster :

Caution: My limited experience with appending to log files is that the
larger the file size, the slower the append.

I guess this must have to do with how much RAM is available vs how much disc space is needed.

I just did this benchmark (with some nonce data):

on toFile
put "10000,10001,10002,10003,10004,10005,10006,10007,10008,10009,100010" into tStr
  put the tempName into tFile
  open file tFile for append
  set cursor to watch
  put the millisecs into tStart

  repeat 1000000
    write tStr & cr to file tFile
  end repeat
  close file tFile
  put URL ("file:" & tFile) into tOutput
  delete file tFile
  put the millisecs - tStart
end toFile

on toVariable
put "10000,10001,10002,10003,10004,10005,10006,10007,10008,10009,100010" into tStr
  set cursor to watch

  put the millisecs into tStart

  repeat 1000000
    put tStr & cr after tOutput
  end repeat

  put the millisecs - tStart
end toVariable

tOutput ends up at 67MB in both cases, and 'toFile' took just over 5 seconds, whereas 'toVariable' took just over 40 seconds.
This is on a Mac PBG4 with 768MB RAM.

This could be useful to know when building up large lists.

Best,

Mark_______________________________________________
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