I am trying to manipulate a VERY large file (81GB). The program simply reads in a line from the file, makes any needed changes and prints the line back out to another file on the same disk.
The machine I am running the program seems adequate enough (gobs of swap memory remains untouched, IOWait is around 9%, CPU Idle around 70%, and load averages in the 1.25 region). However, monitoring the output, it looks like it will take 166 hours to run. That is a deal breaker. I have been told PERL reads in 8K at a time by default. Is there a way to change that? Or does anyone have any other suggestions, except to quit my pathetic attempts at programming and go back to Everquest...
Thanks in advance..
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|