Hi, For that you have a lot of solution : "top" or "vmstat 1" on the console for a global overview But if you need load and cpu utilisation per user you have to use ac. Exemple : ac -d -p ffaye 12.86 Jan 6 total 12.86 fwadmin 0.00 ffaye 8.77 Jan 7 total 8.77 ffaye 0.24 Jan 19 total 0.24 ffaye 0.79 Today total 0.79 If you want more information follow this link : http://generationip.com/documentation/system-documentation/113-howto-on-psacct-for-a-complete-monitoring-of-processus-and-users-activities-on-your-system After that if you need to do that remotely and generate graph, take a look on cacti or nagios. Best regards Fabien FAYE RHCE www.generationip.com Free network tools & HOWTO for centos and Redhat ----- Original Message ----- From: "MOKRANI Rachid" <Rachid.MOKRANI at ifp.fr> To: "CentOS mailing list" <centos at centos.org> Sent: Monday, February 1, 2010 11:08:10 AM Subject: [CentOS] monitoring a workstation Hi, I need to monitor a workstation (Centos 5 x86_64). I need to obtain informations about : - cpu utilization per user, per a period, how many days per user, Any ideas about a good and simple free tool ? Regards. __________________________ Ce message (et toutes ses pièces jointes éventuelles) est confidentiel et établi à l'intention exclusive de ses destinataires. Toute utilisation de ce message non conforme à sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'IFP décline toute responsabilité au titre de ce message. This message and any attachments (the message) are confidential and intended solely for the addressees. Any unauthorised use or dissemination is prohibited. IFP should not be liable for this message. Visitez notre site Web / Visit our web site : http://www.ifp.fr __________________________ _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos