By Gian-Paolo D. Musumeci
Procedure functionality Tuning" covers targeted parts: functionality tuning, or the paintings of accelerating functionality for a particular software, and capability making plans, or finding out what top fulfills a given position. This e-book specializes in the working process, the underlying undefined, and their interactions.
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Extra resources for System Performance Tuning
8%) edge in floating-point performance. This is because increasing the clock rate of the processor tends to accentuate the constant and substantial delay involved in accessing memory. This is particularly an effect of floating-point benchmarks, because they tend to be rather large. The overall limit of the clock signal is dependent on some rather esoteric parameters in the processor design, such as the underlying semiconductor technology. While it is possible to optimize for clock speed by adjusting these parameters, the real-world characteristics -- such as cost, heat, and power consumption -- of the resulting design may make it infeasible for the marketplace.
For example, a system that did very poorly on integer performance but very well in floating-point would have the same SPECmark score as a system that performed in exactly the opposite way. Interestingly, when SPEC89 was released, it was not a particularly important benchmark; the different competing architectures of the time had very different performance characteristics, and no benchmark could effectively relate all of their performances. In the field of high-performance computing, the Linpack 100 x 100 code was completely dominant.
These environments typically have multiple terminal sessions, significant disk I/O, moderate system and application execution time, and transaction integrity requirements. TPC-A is obsolete. • TPC-B was issued in August of 1990. Unlike TPC-A, TPC-B is not an OLTP benchmark. Rather, TPC-B is a database stress test. It tends to emphasize disk I/O without having any remote terminal sessions. TPC-B is obsolete. • TPC-C was approved in July 1992. TPC-C is an OLTP benchmark like TPC-A, but is significantly more complex; it implements multiple transaction types and a more complex database.
System Performance Tuning by Gian-Paolo D. Musumeci