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Top Forums Web Development Sortable Tables in Javascript Post 302307826 by cbkihong on Thursday 16th of April 2009 11:42:28 AM
Old 04-16-2009
Quote:
Originally Posted by muay_tb
might sound obvious as i know its possible in PHP but...

why not grab records from the database using a set query whereby you pass a sort (or order by) parameter to the function and in the perl manipulate the rows fetched and re-display:
Yes it will work. For most applications I will go with this myself also, but sometimes this is not desirable for performance reasons. Especially if the database itself has already been overloaded, having to ask the database again just to change the sorting will be an overkill. In that case you might want to rely on the server-side language (PHP/Perl) or client-side (Javascript-based) to do the sorting instead. Performance may not necessarily be better, but if the database server is on another host then at least it can be freed for serving other database queries.

This is based on observation because in production environment, database server is very often the performance bottleneck.
 

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PMDAMYSQL(1)						       Performance Co-Pilot						      PMDAMYSQL(1)

NAME
pmdamysql - MySQL database PMDA DESCRIPTION
pmdamysql is a Performance Co-Pilot PMDA which extracts live performance data from a running MySQL database. INSTALLATION
pmdamysql uses a configuration file from (in this order): o /etc/pcpdbi.conf o $PCP_PMDAS_DIR/mysql/mysql.conf This file can contain overridden values (Perl code) for the settings listed at the start of pmdamysql.pl, namely: o database name (see DBI(3) for details) o database user name o database pass word Once this is setup, you can access the names and values for the mysql performance metrics by doing the following as root: # cd $PCP_PMDAS_DIR/mysql # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/mysql # ./Remove pmdamysql is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. Binary Status values in text Some of the status values are in the form of YES/NO or ON/OFF. Since these cannot be intepreted by tools like PMIE, they have been duplicated with a _num extension and the values of 1 (YES/ON) or 0 (NO/OFF). Eg: o mysql.slave_status.slave_io_running o mysql.slave_status.slave_io_running_num FILES
/etc/pcpdbi.conf configuration file for all PCP database monitors $PCP_PMDAS_DIR/mysql/mysql.conf configuration file for pmdamysql $PCP_PMDAS_DIR/mysql/Install installation script for the pmdamysql agent $PCP_PMDAS_DIR/mysql/Remove undo installation script for the pmdamysql agent $PCP_LOG_DIR/pmcd/mysql.log default log file for error messages from pmdamysql SEE ALSO
pmcd(1), pmdadbping.pl(1) and DBI(3). # vi: sw=4 ts=4 et: 3.8.10 Performance Co-Pilot PMDAMYSQL(1)
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