Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

comment on

( [id://3333] : superdoc . print w/replies, xml ) Need Help??
Is there a better way to periodically extract the new lines from a log file?

I did it once and the algorithm was very similar to the one you described. The only thing that changed was that instead of saving the line count, I save the return of tell (that is, the offset of the file at the last read). This way, when you decide the file has changed and read the offset where you stopped, you just seek and go on from that place. I think you're gonna be quite pleased with the performance after this straightforward change.


In reply to Re: Extract new lines from log file by ferreira
in thread Extract new lines from log file by smithers

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • 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.