Changes

 LAMP (acronym for Linux, Apache, MySQL, PHP) software stack is widely used for building modern web siteson Linux. We measure not only performance (So it's quite natural that there is a need to understand how well such type of workloads run in virtualized environment and how many LAMPs virtualization can bare on a single piece of hardware. 2 important metrics are presented in this report: total number of serviced requests can deliver server), but also maximum /sec and average response time - to understand QoS.

To measure LAMP software stack performance and density we use DVD-Store E-Commerce benchmark developed by [http://linux.dell.com/dvdstore/ Dell]. This benchmark is also widely used by RedHat and others.

Hardware:* Server: 4xHexCore Intel Xeon (2.66 GHz), 64 GB RAM, HP MSA1500 SAN Storage, 8 SATA (7200 RPM) Disks in RAID0 *Client: 4xHexCore Intel Xeon (2.136 GHz), 32 GB RAM * Network: Gbit 1Gbit direct server<->client connection Virtualization Software: ESXi4.1upd1, XenServer5.6fp1, HyperV (R2), OpenVZ (RH6) 2.6.32-042test006.1.x86_64

Platform:* Virtualization Software: ESXi4.1upd1, XenServer5.6fp1, HyperV (R2), OpenVZ (RH6) 2.6.32-042test006.1.x86_64* Guest OS: Centos 5.5 x86_64

* OpenVZ shows the best performance over solutions tested: OpenVZ 38% faster than XenServer and more than x2 times faster than HyperV and ESXiunder high load.* OpenVZ shows the best response time over solutions tested: OpenVZ has 33% better response time than compared to ESXi and x2 times better response time than XenServer and HyperV