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Re: How can you make idle processors pick up java work?

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  To: qwertmonkey
From: "Joshua Cranmer" <joshua.cranmer@1:261/38.remove-dpk-this>

  To: qwertmonkey
From: Joshua Cranmer <Pidgeot18@verizon.invalid>

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On 7/30/2012 7:27 PM, qwertmonkey@syberiaoutpost.ru wrote:
>>> Is there a way to make these processors pick up/share work also, or
>>> do you have to use some sort of scheduling framework on top of java?
>
>> Use multiple threads?
> ~
>   a) I need to actually scan large text files (10+ million lines).
>   b) On each line there is a NL sentence.
>   c) That processing should be run only once, but as fast as possible.

Only 10M-line files?

The easiest way to do this is to just make a ThreadPoolExecutor and have your 
main thread dispatch requests as fast as possible to the pool. Or you can do 
the work pooling yourself, which may be faster since you're not continually 
posting Runnable's, but timing results would be necessary to convince me.

There are other options, but chances are, your disk drive is going to saturate 
first (in short, it involves reading non-consecutive pages of the file, which 
is generally a recipe for disaster).

--
Beware of bugs in the above code; I have only proved it correct, not tried it.
-- Donald E. Knuth

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How can you make idle processors pick up java work? "qwertmonkey" <qwertmonkey@1:261/38.remove-x1c-this> - 2012-07-31 20:07 +0000
  Re: How can you make idle processors pick up java work? "David Lamb" <david.lamb@1:261/38.remove-x1c-this> - 2012-07-31 20:07 +0000
  Re: How can you make idle processors pick up java work? "Patricia Shanahan" <patricia.shanahan@1:261/38.remove-x1c-this> - 2012-07-31 20:07 +0000
  Re: How can you make idle processors pick up java work? "Joshua Cranmer" <joshua.cranmer@1:261/38.remove-x1c-this> - 2012-07-31 20:07 +0000
  Re: How can you make idle processors pick up java work? "John B. Matthews" <john.b..matthews@1:261/38.remove-x1c-this> - 2012-07-31 20:07 +0000

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