NAME¶
DBIx::Profile - DBI query profiler
Version 1.0
Copyright (c) 1999,2000 Jeff Lathan, Kerry Clendinning.
All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SYNOPSIS¶
use DBIx::Profile; or "perl -MDBIx::Profile <program>"
use DBI;
$dbh->printProfile();
DESCRIPTION¶
DBIx::Profile is a quick and easy, and mostly transparent, profiler
for scripts using DBI. It collects information on the query
level, and keeps track of first, failed, normal, and total amounts
(count, wall clock, CPU time) for each function on the query.
NOTE: DBIx::Profile use Time::HiRes to clock the wall time and
the old standby times() to clock the CPU time. The CPU time is
pretty coarse.
DBIx::Profile can also trace the execution of queries. It will print
a timestamp and the query that was called. This is optional, and
occurs only when the environment variable DBIXPROFILETRACE is set
to 1. (ex: (bash) export DBIXPROFILETRACE=1).
Not all DBI methods are profiled at this time.
Except for replacing the existing "use" and "connect" statements,
DBIx::Profile allows DBI functions to be called as usual on handles.
Prints information to STDERR, prefaced with the pid.
RECIPE¶
1) Add "use DBIx::Profile" or execute "perl -MDBIx::Profile <program>"
2) Optional: add $dbh->printProfile (will execute during
disconnect otherwise)
3) Run code
4) Data output will happen at printProfile or $dbh->disconnect;
METHODS¶
printProfile
$dbh->printProfile();
Will print out the data collected.
If this is not called before disconnect, disconnect will call
printProfile.
setLogFile
$dbh->setLogFile("ProfileOutput.txt");
Will save all output to the file.
AUTHORS¶
Jeff Lathan, lathan@pobox.com
Kerry Clendinning, kerry@deja.com
Aaron Lee, aaron@pointx.org
Michael G Schwern, schwern@pobox.com
