Performance of the VAX-11/780 translation buffer: simulation and measurement
ACM Transactions on Computer Systems (TOCS)
A characterization of processor performance in the VAX-11/780
25 years of the international symposia on Computer architecture (selected papers)
Cache Performance in the VAX-11/780
ACM Transactions on Computer Systems (TOCS)
The instrumentation of multics
Communications of the ACM
EINSTEIN: an internal driver in a time-sharing environment
ACM SIGOPS Operating Systems Review
Measurement and analysis of instruction use in the VAX-11/780
ISCA '82 Proceedings of the 9th annual symposium on Computer Architecture
Performance evaluation of IAS on the PDP-11/70
SIGMETRICS '76 Proceedings of the 1976 ACM SIGMETRICS conference on Computer performance modeling measurement and evaluation
An introduction to the Programmer's Workbench
ICSE '76 Proceedings of the 2nd international conference on Software engineering
A Characterization of Processor Performance in the vax-11/780
ISCA '84 Proceedings of the 11th annual international symposium on Computer architecture
The instrumentation of multics
SOSP '69 Proceedings of the second symposium on Operating systems principles
ACM SIGMETRICS Performance Evaluation Review
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In the construction and maintenance of a time-shared computer system the need arises for a tool which can provide a controlled, repeatable environment for the purpose of making performance measurements. This thesis describes the use of a small second computer to simulate the actions of multiple interactive users over individual communication lines. Each simulated user exhibits responses similar to those of a "normal" interactive user. Accordingly, the "Simulator" recognizes and verifies responses transmitted to it by the system being tested. The Simulator also emulates a "think time" corresponding to a normal user''s think time between typing lines on the console. Text corresponding to a user''s console input, as well as control information regarding think time simulation and verification of responses from the system being tested, are retrieved from prepared scripts which have been pre-sorted on the small computer''s magnetic disc unit. The programming package for the Simulator System has the capability of simulating up to 12 users. For the purpose of this thesis, however, only four users are simulated. The Simulator System is intended to be used to test the M.I.T. CTSS and MULTICS (Time-Shared Computer Systems). However, it is designed to be adaptable for testing most time shared computer systems having serial character oriented input-output over communications lines interfacing with 103A compatible data sets.