Check manufacturers specs. There isn't a software way to check for an empty cpu - I'm guessing you meant empty because /proc/cpuinfo tells you how mant slots are full. grep physical /proc/cpuinfo | uniq -c 4 physical id : 0 4 physical id : 1 So 4 cores on each of 2 sockets. Rob Marti Systems Administrator Sam Houston State University 936-294-3804 // rob@xxxxxxxx -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux Sent: Tuesday, August 18, 2009 7:32 AM To: General Red Hat Linux discussion list Subject: how to get the number of sockets Hi all, I was going to by a red hat license for a new server, an looking the note1 in this link: https://www.redhat.com/apps/store/server/#note1 I have reallized that the important thing is the number of sockets, not the number of cpus. So my question is simple, how can I get the number of sockets a motherboard has, ?(without opening it. of coures) I have look at the /proc dir but I get only info about the cpus, not about the sockets, any suggestion, Thanks in advance ESG -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list