Performance and Power Consumption Measurement of Java Application Servers

2012 ◽  
Author(s):  
Hitoshi Oi ◽  
Sho Niboshi
Keyword(s):  
Power Consumption ◽  
Java Application ◽  
Application Servers

scholarly journals Garbage collection: Java application servers’ Achilles heel

2008 ◽  
Vol 70 (2-3) ◽  
pp. 89-110 ◽  
Author(s):  
Feng Xian ◽  
Witawas Srisa-an ◽  
Hong Jiang
Keyword(s):  
Garbage Collection ◽  
Java Application ◽  
Application Servers

scholarly journals Solução eficiente para balanceamento de carga em servidores de aplicação java / Efficient load balancing solution for java application servers

2021 ◽  
Vol 5 (4) ◽  
pp. 1919-1930
Author(s):  
José Renato Castro Milanez ◽  
Pablo Marques De Oliveira ◽  
Edmilson Marmo Moreira ◽  
Thatyana de Faria Piola Seraphim ◽  
Enzo Seraphim
Keyword(s):  
Load Balancing ◽  
Java Application ◽  
Application Servers

Atualmente, o desenvolvimento de aplicações para internet é a melhor forma de oferecer facilidade de acesso aos usuários a partir de um computador ou de um dispositivo móvel, pois não é necessário instalar nenhum software adicional. Dentre as diversas soluções para o desenvolvimento de aplicações, a plataforma Java tem se tornado a procurada por ser independente de ambiente computacional, oferecendo uma variedade de bibliotecas, e projetada para executar código com segurança. Assim, aplicações baseadas em Java passaram a automatizar atividades operacionais das áreas administrativa e acadêmica das universidades federais. Em certas ocasiões, estas aplicações podem sofrer uma grande demanda de requisições simultâneas provocando baixos tempos de resposta ou até a interrupção dos serviços. Uma solução para atender a grande demanda de requisições simultâneas é utilizar várias máquinas na rede atuando como um único servidor, através de um balanceamento de carga. Este trabalho apresenta um estudo comparativo entre os balanceadores de carga Apache Server com Tomcat Connector mod_jk e o HAProxy dos servidores de aplicação Java que hospedam os Sistemas Institucionais Integrados de Gestão (SIG/UFRN) da Universidade Federal de Itajubá. 

Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

Optimal design of a high homogeneous and small-size shim coil for atomic spin gyroscope based on 0-1 linear programming

2020 ◽  
Vol 64 (1-4) ◽  
pp. 165-172
Author(s):  
Dongge Deng ◽  
Mingzhi Zhu ◽  
Qiang Shu ◽  
Baoxu Wang ◽  
Fei Yang
Keyword(s):  
Linear Programming ◽  
Power Consumption ◽  
Low Power ◽  
Optimization Design ◽  
Structural Parameters ◽  
Axial Position ◽  
Low Power Consumption ◽  
Optimal Method ◽  
Atomic Spin ◽  
Shim Coil

It is necessary to develop a high homogeneous, low power consumption, high frequency and small-size shim coil for high precision and low-cost atomic spin gyroscope (ASG). To provide the shim coil, a multi-objective optimization design method is proposed. All structural parameters including the wire diameter are optimized. In addition to the homogeneity, the size of optimized coil, especially the axial position and winding number, is restricted to develop the small-size shim coil with low power consumption. The 0-1 linear programming is adopted in the optimal model to conveniently describe winding distributions. The branch and bound algorithm is used to solve this model. Theoretical optimization results show that the homogeneity of the optimized shim coil is several orders of magnitudes better than the same-size solenoid. A simulation experiment is also conducted. Experimental results show that optimization results are verified, and power consumption of the optimized coil is about half of the solenoid when providing the same uniform magnetic field. This indicates that the proposed optimal method is feasible to develop shim coil for ASG.

Analysis of Characteristics of Halogen and LED Automobile Lamps

2020 ◽  
pp. 57-62
Author(s):  
Olga Yu. Kovalenko ◽  
Yulia A. Zhuravlyova
Keyword(s):  
Power Consumption ◽  
Flip Chip ◽  
Weather Conditions ◽  
Luminous Flux ◽  
Luminous Efficacy ◽  
Colour Temperature ◽  
Study Results ◽  
Calculation Results ◽  
Mandatory Rules ◽  
Halogen Lamps

This work contains analysis of characteristics of automobile lamps by Philips, KOITO, ETI flip chip LEDs, Osram, General Electric (GE), Gtinthebox, OSLAMPledbulbs with H1, H4, H7, H11 caps: luminous flux, luminous efficacy, correlated colour temperature. Characteristics of the studied samples are analysed before the operation of the lamps. The analysis of the calculation results allows us to make a conclusion that the values of correlated colour temperature of halogen lamps are close to the parameters declared by manufacturers. The analysis of the study results has shown that, based on actual values of correlated colour temperature, it is not advisable to use LED lamps in unfavourable weather conditions (such as rain, fog, snow). The results of the study demonstrate that there is a slight dispersion of actual values of luminous flux of halogen lamps by different manufacturers. Maximum variation between values of luminous flux of different lamps does not exceed 14 %. The analysis of the measurement results has shown that actual values of luminous flux of all halogen lamps comply with the mandatory rules specified in the UN/ECE Regulation No. 37 and luminous flux of LED lamps exceeds maximum allowable value by more than 8 %. Luminous efficacy of LED lamps is higher than that of halogen lamps: more than 82 lm/W and lower power consumption. The results of the measurements have shown that power consumption of a LED automobile lamp is lower than that of similar halogen lamps by 3 times and their luminous efficacy is higher by 5 times.

ESTIMATION OF POWER CONSUMPTION DISTRIBUTION IN FPGA-PROJECTS

2014 ◽  
pp. 192-196
Author(s):  
A. Drozd ◽  
◽  
S. Mileiko ◽  
V. Kalinichenko ◽  
N. Ulchenko
Keyword(s):  
Power Consumption

An Ultra-low Power Consumption MAC Protocol Complied with IEEE 802.15.4/4e for Wireless Smart Utility Networks

2016 ◽  
Vol 136 (11) ◽  
pp. 1555-1566 ◽  
Author(s):  
Jun Fujiwara ◽  
Hiroshi Harada ◽  
Takuya Kawata ◽  
Kentaro Sakamoto ◽  
Sota Tsuchiya ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Ieee 802.15.4 ◽  
Mac Protocol ◽  
Low Power Consumption ◽  
Ultra Low Power
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