Hi All, Recently there was a brief discussion as to CPU performance. Over the weekend I had the opportunity to look at the CPU loading of two systems I run. Both systems are built from the ACID distribution with the following changes: Node update script disabled Sendmail disabled Digium G.729 codec loaded Admin and Webmin interfaces disabled Required modules only loaded Neither system uses Iptables and both are located behind Linksys BEFSR41 routers with fixed IP addresses. 'netstat -ta' shows only the SIP, IAX2, and SSH ports open. Both systems uses IBM Serve RAID hardware RAID level 1 using 18GB 15K RPM drives. System 1 consists of an IBM x345 single CPU PIII-S 1.133MHz Server with 512KB cache and 2GB RAM. 'less /proc/cpuinfo' shows BOGOMIPS of 2257. 'top' shows and idle CPU load of 10% for asterisk and negligible load for any other process. 'free' reports about 419KB used. 'swapon -s' reports swap space usage of 0. With on USB connected repeater active (ongoing voice conversation) and an independent voice call set up using a Linksys SIP telephone set using A law codec connected to a service provider using IAX2 and G.729 top showed a peak load of 22%. System 2 consists of an IBM x345 single XEON 2GHz HT capable Server with 512KB cache and 2 GB RAM. 'less /proc/cpuinfo' shows BOGOMIPS of 3990. 'top' shows and idle CPU load of 6% for asterisk and negligible load for any other process. 'free' reports about 500KB used. 'swapon -s' reports swap space usage of 0. With on USB connected repeater active (ongoing voice conversation) and an independent voice call set up using a Linksys SIP telephone set using A law codec connected to a service provider using IAX2 and G.729 top showed a peak load of 17%. Looking at the numbers the higher performance XEON system seems to have made only a marginal improvement at what is admittedly a light load. But what is more interesting it appears that relatively modest PIII boxes are fully capable of managing the single repeater type applications without resporting to something like Limey. Perhaps PIII 500MHz or more, 768MB RAM, and 2GB or more disk as a working minimum spec. Note that the Anaconda installer used for CENTOS in ACID seems to have problems loading with just 512MB of RAM. I would be interesetd to hear from anyone running such a configuration. Using the simple shell comands shown in single quotes above provides a quick system overview for basic performance evaluation. Cheers, John ZL4JY