DRAFT DRAFT DRAFT A “Displacement” Technique for Robust Portable Measurement of Communications Processing Overheads
نویسندگان
چکیده
The problem of recording CPU demand for communications operations is handled poorly by some instrumentation techniques. A simple technique is described that does not require instrumenting the code (so it can be used without having the source code), and that can be used with any operating system. It records the displacement of a CPU-intensive looping process by the process under test, and computes the CPU effort taken by the process under test. Experiments show that standard UNIX instrumentation misses a large fraction of the CPU time to handle socket messages, and misses more for larger messages. Displacement captures it all, apart from errors due to daemons.
منابع مشابه
مقاومت کششی ، مقاومت ویژه و توان مالبندی موردنیاز گاو آهن قلمی (چیزل) ، در سطوح مختلف رطوبت خاک و عمق شخم
The effects of three levels of soil moisture content (8-10, 10-12 and 12-14% d.b.) and three levels of plowing depth (15, 20 and 25 cm) on draft, specific draft and drawbar power requirement of a 7-shank chisel plow in a clay loam soil were investigated. The experimental design was a randomized complete block design with a 3×4 factorial. The effect of plowing depth on all of the parameters ment...
متن کاملNumerical Study of a Pipe Extension Effect in Draft Tube on Hydraulic Turbine Performance
Draft tube of Francis type hydraulic turbine usually consists of: cone, elbow and diffuser. On the contrary, in some power stations an extra pipe should be added to the draft tube at the bottom of cone because of installation limitation. In this paper, this special case has been numerically studied. To this end CFD analysis was applied to simulate all parts of hydraulic turbine. A homogeneous m...
متن کاملPerformance evaluation of modified bentlegPlow using finite element approach
ABSTRACT-This paper aims to develop a new design of a bentleg (BL) plow and to determine its performance as compared to the conventional one using finite element approach. The difference between the modified and conventional BL plows is the direction of angle between the projection of cutting blade on horizontal plane normal to plow shank and the line perpendicular to the plow shank in the same...
متن کاملمقاومت کششی ، مقاومت ویژه و توان مالبندی موردنیاز گاو آهن قلمی (چیزل) ، در سطوح مختلف رطوبت خاک و عمق شخم
The effects of three levels of soil moisture content (8-10, 10-12 and 12-14% d.b.) and three levels of plowing depth (15, 20 and 25 cm) on draft, specific draft and drawbar power requirement of a 7-shank chisel plow in a clay loam soil were investigated. The experimental design was a randomized complete block design with a 3×4 factorial. The effect of plowing depth on all of the parameters ment...
متن کاملتدوین پیشنویس قانون سلامت روان
Objectives Mental health acts have been developed in different countries to protect human and civil rights of people with psychiatric disorders. In Iran, although there are some scattered laws within the existing body of laws, there is no separate mental health act. The aim of the present project was to prepare a draft pertaining to the mental health act in the country. Methods The draft of th...
متن کامل