If you connect to the server via SSH and run the command:
ps afwux
php
[root@austin ~]# ps afwux | grep php root 998 0.0 0.3 335940 25100 ? Ss Jun18 1:10 /usr/bin/sw-engine -c /usr/local/psa/admin/conf/php.ini /usr/local/psa/admin/bin/modules/watchdog/wdcollect -c /usr/local/psa/etc/modules/watchdog/wdcollect.inc.php root 19926 0.0 0.0 103244 848 pts/0 S+ 14:39 0:00 _ grep php 10016 23321 0.0 0.1 257956 10956 ? S Jul01 0:00 /usr/bin/php-cgi -c /var/www/vhosts/system/coldriverdata.com/etc/php.ini 10016 19924 0.5 0.7 275928 57464 ? SN 14:39 0:00 | _ /usr/bin/php-cgi -c /var/www/vhosts/system/coldriverdata.com/etc/php.ini
Plesk server using resources – process is pigz. This is a process used like gzip or zip and is part of the backup process.
http://download1.parallels.com/Plesk/PP11/11.5/release-notes/parallels-plesk-panel-11.5-impacts-for-linux-based-os.html
Compression with pigz
Panel now uses the pigz library instead of gzip to compress backup data. This ensures better CPU utilization and speeds up the compression 3.5 times on a physical server and 1.2 times on a virtual server (depending on the disk I/O).
Duplicated Data Removed
Duplicated data is removed from server.xml: Now top-level XML nodes do not contain information about child nodes.
Connection Speed
Now you can see the estimated connection speed between the source and destination servers during data transfer.
Storing Backup Files
You can set the path for storing a temporary backup file, which is created when a customer downloads a backup from the server.