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This document describes a test performed by the IBM Linux Technology Center Performance team to investigate the ability of the BladeCenter JS22 Express server to consolidate the workload from a large number of x86 servers each running a dedicated LAMP application. The workload was run on a Dell PowerEdge 860 server, which Dell positions for network infrastructure or Web applications in a non-virtualized, single-purpose configuration. The processor activity level of the Dell server was tested at two "busy" levels to simulate a common profile of a server running a dedicated Web application. The same workload was transferred onto the BladeCenter JS22 Express server configured with IBM Advanced POWER Virtualization and executed in a logical partition. The workload was then replicated in individual partitions, each configured with individual Linux OS images, until the JS22 Express server became heavily loaded.
The test results demonstrated that up to eight LAMP applications from individual Dell PowerEdge 860 servers could be consolidated onto a single JS22 Express blade server with adequate performance. The tests also showed that the two JS22 Express servers that were included in the tested server configuration delivered near equivalent performance, demonstrating the efficient scale-out capability of the BladeCenter platform. Based on this scaling capability, up to 112 Dell PowerEdge 860 servers worth of LAMP workload under this test definition and application profile could be consolidated onto a full BladeCenter chassis of 14 blades.
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