Hybrid Autoscaling Strategy on Container-based Cloud Platform

2022 ◽  
Vol 10 (1) ◽  
pp. 0-0

The container has several advantages over the traditional virtual machine technology such as light-weight, fast booting time, and fast recovery. Kubernetes is one the most outstanding container management and deployment platforms. The Kubernetes provides autoscaling function, which will increase and decrease the hardware resources to adapt with the current traffic load situation to keep the user experience. Two popular autoscaling methods are horizontal autoscaling and vertical autoscaling. Based on the monitoring resource utilization, horizontal autoscaling will increase the number of PoDs (point of deployment) or vertical autoscaling will increase the hardware resources of each PoD to achieve the target utilization. In this paper, we present a hybrid solution that combines the advantages of both autoscaling solutions and proposes a bandwidth-efficient scheduler strategy. By numerical analysis, our hybrid approach is better than the normal HPA approach in terms of bandwidth cost and has lower autoscaling latency than the VPA approach

Author(s):  
Holly M. Smith

Chapter 13 completes the development and assessment of the Hybrid approach. Final developments involve introducing the concept of an action’s being “decision-mandated,” redefining “subjective obligatoriness” using this concept, and requiring (in order to avoid reemergence of the moral laundry list) that rankings of the guides at all levels be modally robust relative to the governing Code C. Nonetheless some agents may experience forms of sophisticated uncertainty about which act should be chosen according to this Constrained Standards Hybrid approach. In such cases, hopefully rare, there is no subjectively obligatory act and there is no way for the agent to indirectly apply her moral theory. Even so, the Constrained Standards Hybrid approach appears to be the best solution to the problems of error and uncertainty despite the fact that it cannot wholly solve the epistemic limitations that agents may confront.


2011 ◽  
Vol 35 (4) ◽  
pp. 87-125 ◽  
Author(s):  
Peter D. Feaver

President George W. Bush's Iraq surge decision in late 2006 is an interesting case for civil-military relations theory, in particular, the debate between professional supremacists and civilian supremacists over how much to defer to the military on decisions during war. The professional supremacists argue that the primary problem for civil-military relations during war is ensuring the military an adequate voice and keeping civilians from micromanaging and mismanaging matters. Civilian supremacists, in contrast, argue that the primary problem is ensuring that well-informed civilian strategic guidance is authoritatively directing key decisions, even when the military disagrees with that direction. A close reading of the available evidence—both in published accounts and in new, not-for-attribution interviews with the key players—shows that the surge decision vindicates neither camp. If President Bush had followed the professional supremacists, there would have been no surge because his key military commanders were recommending against that option. If Bush had followed the civilian supremacists to the letter, however, there might have been a revolt of the generals, causing the domestic political props under the surge to collapse. Instead, Bush's hybrid approach worked better than either ideal type would have.


2004 ◽  
Vol 41 (6) ◽  
pp. 1250-1258 ◽  
Author(s):  
J -C Chai ◽  
N Miura ◽  
H -H Zhu ◽  
Yudhbir

The compression and consolidation behavior of some structured natural clays are discussed. It is shown that for some structured natural clays, the relation between void ratio (e) and mean effective stress (p′) is more linear in a ln(e + ec) – ln(p′) plot (where ec is a soil parameter) than in an e – ln(p′) plot. It is proposed that for structured natural clay with a sensitivity value greater than 4, a linear ln(e + ec) – ln(p′) relation can be used in settlement and consolidation calculation. The effect of introducing a linear ln(e + ec) – ln(p′) relation on the calculated load–settlement curve and consolidation behavior of structured clays is discussed. The linear ln(e + ec) – ln(p′) relation was incorporated into the modified Cam–clay model by modifying the hardening law of the model. It is shown that using the linear ln(e + ec) – ln(p′) relation simulated the consolidation behavior of the structured natural clays better than using the linear e – ln(p′) relation.Key words: structured natural clay, compression, consolidation, constitutive model, numerical analysis.


2018 ◽  
Vol 9 (1) ◽  
pp. 32-61 ◽  
Author(s):  
Nivedita Nahar ◽  
Prerna Dewan ◽  
Rakesh Kumar

With the steady advancements in the technology, the network security is really important these days to protect information from attackers. In this research, the main focus is on designing strong firewall filtering rules so that detection of malicious code is achieved to an optimal level. A proposed framework is introduced to improve the performance parameters such as Server response time, Web content analysis, Bandwidth, and the performance of the Network traffic load. This research work defines a new set of IPtable rules achieved by modifying the kernel source code. This is done using OpenBSD kernel source code, which results in the formation of a mini-firewall. Therefore, a new hybrid approach is proposed by adding packet filtering rules and SNORT technology in mini-firewall for malicious activity detection. It is an efficient and practical technique which will be helpful to mitigate the malware attacks and secure LAMP server. Experimental analysis has been done to conclude that around 70-75% malicious activity can be reduced by using the proposed technique.


Author(s):  
Ali H. Wheeb ◽  
Dimitris N. Kanellopoulos

Mobile ad-hoc networks (MANETs) are composed of mobile nodes communicating through wireless medium, without any fixed centralized infrastructure. Providing quality of service (QoS) support to multimedia streaming applications over MANETs is vital. This paper focuses on QoS support, provided by the stream control transmission protocol (SCTP) and the TCP-friendly rate control (TFRC) protocol to multimedia streaming applications over MANETs. In this study, three QoS parameters were considered jointly: (1) packet delivery ratio (PDR), (2) end-to-end delay, (3) and throughput. Specifically, the authors analyzed and compared the simulated performance of the SCTP and TFRC transport protocols for delivering multimedia streaming over MANETs. Two simulation scenarios were conducted to study the impact of traffic load and node speed (mobility) to their performance. Based on the simulation results, the authors found that the PDR and the end-to-end delay of TFRC are slightly better than those of SCTP in both scenarios. Additionally, the performance of SCTP is significantly better than TFRC in terms of throughput.


2019 ◽  
Vol 6 (9) ◽  
pp. 095333 ◽  
Author(s):  
Meenakshi S ◽  
Neeraj Srinivas ◽  
Y Sai Siddarth ◽  
Ch V S Kamal ◽  
Sudheendra K ◽  
...  

1980 ◽  
Vol 12 (11) ◽  
pp. 1287-1296 ◽  
Author(s):  
G I Thrall

A hybrid approach combining theoretical and numerical strategies is utilized in determining the effect that government activity has upon urban land values and structure. A theoretical model of the interaction of households and a local government is used to structure the salient relationships. A numerical analysis is subsequently performed on the analytic system to qualitatively evaluate both the implications and the reasonableness of the system. A hybrid investigation lends credence to abstract analyses and supports the use of theoretical constructs in the development of empirical formulations.


Author(s):  
F Drabble ◽  
D J Brookfield

Workers in elevated positions must be protected from falling or from the hazardous consequences of falls. Protection from falling can include fences, guard rails, etc., or a restraint system preventing the workers from reaching any point from which they can fall. However, protection from falling can be impractical and in such situations a fall arrest system (FAS) must be provided such that the fall does not cause injury to the worker or to others. This paper surveys prior work on the analysis of FASs including the energy balance method historically used. This method is limited to simple FASs where only one worker may fall. A novel numerical analysis technique for predicting the forces occurring in each component of an FAS during a fall is then described. Results from the numerical analysis are compared with results from experimental tests and with those from the energy balance method. It is shown that the numerical analysis technique predicts forces to within better than approximately 7 per cent, the method being conservative, whereas the errors shown by the energy balance method exceed 26 per cent. The new analysis method is also shown to be applicable to multiple falls.


Sign in / Sign up

Export Citation Format

Share Document