Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.java.programmer > #18624

Re: greatly differing processing time between java and Linux while calculating hashes?

From Roedy Green <see_website@mindprod.com.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: greatly differing processing time between java and Linux while calculating hashes?
Date 2012-09-09 02:38 -0700
Organization Canadian Mind Products
Message-ID <opoo48t4on80j5t26b76fmn6p42qrl6bi1@4ax.com> (permalink)
References <k2h6js$k1f$1@speranza.aioe.org>

Show all headers | View raw


On Sun, 9 Sep 2012 04:40:28 +0000 (UTC),
qwertmonkey@syberianoutpost.ru wrote, quoted or indirectly quoted
someone who said :

> Roedy, I did play with the size of the input block used for the input stream
>and the files lenghts themselves and the results where the same, so 3 doesn't
>seem to be the case.

you want to make sure the size of the byte / char array given to the
digest calculator is big so that you have the overhead of the call as
infrequently as possible.  You might want to do a trace to be sure you
are changing that, not just some other buffering.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
A new scientific truth does not triumph by convincing its opponents and making them see the light,
but rather because its opponents eventually die, and a new generation grows up that is familiar with it.
~ Max Planck 1858-04-23 1947-10-04 

Back to comp.lang.java.programmer | Previous | NextPrevious in thread | Find similar | Unroll thread


Thread

greatly differing processing time between java and Linux while calculating hashes? qwertmonkey@syberianoutpost.ru - 2012-09-09 04:40 +0000
  Re: greatly differing processing time between java and Linux while calculating hashes? Roedy Green <see_website@mindprod.com.invalid> - 2012-09-09 02:38 -0700

csiph-web