Performance Software Limited
English software company formed by a management buyout of the Systel Product Group of Systime. Systime were a very successful manufacturer of clones of DEC VT terminals amongst other things. Performance Software was formed to take over development and sales of Systel a widely used OLTP system which runs under OpenVMS.
The development division produced a suite of products running on OpenVMS, leveraging their knowledge of the OpenVMS system and the codebase of the stable but now aging Systel. The premier product of these tools was V-Test, a testing suite for character cell based applications running on OpenVMS. V-TEST could be used to do functional, regression, load and stress testing of character cell based applications using VirtualUser's and its powerful scripting language, SCL. Ports of V-Test were attempted to various unix environments but none were very successful from a sales point of view, or the fact that the straight ports of the heavily OpenVMS based applications did not fit well in the unix environment.
As the character cell market began to die back work was put into making V-Test work in other testing spheres, one of the more successful of these experiments was/is sold under the name Impact. This toolset used the scripting and virtual user capablities of V-Test, now ported to Windows NT, taken into the Sybase RDBMS sphere. A partnership with a French company, IMM, with expertise in database tuning meant that Impact could be used to load test and tune Sybase databases. The partnership with IMM grew and eventually led to the merger of IMM and Performance Software to produce CYRANO. Under CYRANO V-Test would simply become CYRANO Test and parts of Impact would eventually morph into OpenSTA.
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