Re^3: slurped scalar map


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Re^3: slurped scalar map

by dragonchild (Archbishop)

on Jun 20, 2006 at 17:28 UTC ( [id://556491]=note: print w/replies, xml )

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in reply to Re^2: slurped scalar map
in thread slurped scalar map

The OS already does that for you. When you read from a file, you're not actually reading from the disk itself. You read from a buffer than the disk manager creates for you. So, slurp-process-slurp-process is going to be nearly as fast (or faster) as slurp-process-process-process.

My criteria for good software:

Does it work?
Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

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Re^4: slurped scalar map
by 0xbeef (Hermit) on Jun 20, 2006 at 19:50 UTC

How can the OS buffer multiple small seek/read operations as effectively as when it is doing a single seek to start-of-file and performing a large sequential read of the entire content?

On Unix systems the readahead buffer is continuously increased with logic something like "ok you're still reading sequentially - let me double the readahead buffer when doing the next read".

Niel

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