Beefy Boxes and Bandwidth Generously Provided by pair Networks
Think about Loose Coupling
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
The fetchrow_array and fetchrow_arrayref methods retrieve data from the datasource one single row at a time, and thus the system that the script is running on only has to deal with one row's worth of data at a time.

The query results may be queued up in a buffer on the database side, but the database is optimized for that sort of thing.

Overall, the DBI module is quite memory efficient. I've got a similar script running on my webserver that queries about a hundred thousand rows of data, generates HTML pages using the data, and copies the whole thing over to another machine. This batch takes about 10 to 15 minutes to run, even with all the disk I/O and querying going on, and has no effect on the other processes going on with that machine.

I wouldn't worry too much about it! :)

higle

In reply to Re: Memory usage with DBI by higle
in thread Memory usage with DBI by Kozz

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 or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chilling in the Monastery: (2)
As of 2022-05-25 01:47 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Do you prefer to work remotely?



    Results (84 votes). Check out past polls.

    Notices?