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Topic: Buffer management

Related Topics

buffer overflow

Z buffering

buffer zone

frame buffer

buffer solution

port queue buffer

depth buffer

buffer state

buffer management

Double Buffering

buffer amplifier

tri state buffer

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	Memory and buffer management
		Because the data in the buffer will be overwritten by the next incoming packet, the application will either have to act immediately on the data or copy the data into a secondary buffer for later processing.
		The buffers are not deallocated when the device driver is finished sending the data, but held on a retransmission queue.
		The buffers are not deallocated until the data is known to be received by the peer.
	www.usenix.org /publications/library/proceedings/mobisys03/tech/full_papers/dunkels/dunkels_html/node6.html (849 words)

	Citations: Buffer Management in Real-Time Databases - Huang, Stankovic (ResearchIndex)
		Citations: Buffer Management in Real-Time Databases - Huang, Stankovic (ResearchIndex)
		Huang, J., and J. Stankovic, "Buffer Management in Real-Time Database," COINS TR 90-65, University of Massachusetts, July 1990.
		The objective of these buffer management schemes is to promote sharing and reduce disk accesses, thereby increasing the throughput.
	citeseer.ist.psu.edu /context/642179/312953 (999 words)

	Voice buffer management - Patent 4841574
		This buffering must be done on a real time basis so that application programs executing on the system can store the buffered voice data on disk, as the user is speaking, so as to allow continuous speech without limiting the amount of voice data that can be input to the system.
		In the preferred embodiment disclosed herein, the buffer is a ring-type buffer composed of N records with M records forming a block of the buffer.
		The buffer will continue to be filled until the end of the buffer is reached, at which point it will start from the beginning again provided that the block at the beginning of the buffer is available.
	www.freepatentsonline.com /4841574.html (4785 words)

	Critical Chain FAQ
		Resource Buffers are unlike the other buffers, as they do not directly impact the lead time or scheduling of the project, but rather serve as a wake-up call for resources that may need one in order to be ready to run their leg of the relay when their predecessor is complete.
		Buffer Management is the tracking and assessment of the consumption and replenishment of buffers during project execution.
		Since buffers are based in the ability of "luckier" tasks making up for the "unlucky" tasks, when chains of tasks get short, with perhaps only four or less tasks, and alternative calculation based on the "square root of the sum of the squares of the differences" of these two task estimates is sometimes used.
	www.focusedperformance.com /ccfaq.html (3633 words)

	Buffer Management in Real-Time Databases - Huang, Stankovic (ResearchIndex)
		But little work has been done to study buffer management in real-time database systems.
		In this work, we propose and evaluate algorithms for real-time oriented buffer allocation and buffer replacement based on the existing organization of a real-time database testbed.
		30 An Approximate Analysis of the LRU and FIFO Buffer Replaceme..
	citeseer.ist.psu.edu /huang90buffer.html (586 words)

	UDI Core Specification 1.01 - Buffer Management
		The UDI buffer is used to pass user data from one UDI region to another, typically for the purpose of performing I/O with that buffer.
		Each UDI metalanguage is free to manage buffers in a manner appropriate to that metalanguage (and may even manage different buffers in a different manner for different metalanguage operations) but must specify the methodology to be used in the metalanguage specification and as part of the metalanguage library interface.
		Buffer tags are related to specific data within the buffer and are used to describe that data.
	docsrv.sco.com /UDI_spec/core_spec-14.html (6460 words)

	Quality for business Step Five
		A buffer is essentially a form of protection against variation and a control over the performance of the system.
		Buffer management is the control mechanism that can protect the constraint and indicate areas of the system that are not in control.
		To get the maximum out of buffer management, we must make sure that all the main processes impacting the constraint are stable, with an interval of variability that allows them to be managed.
	www.thedecalogue.com /stepfive.htm (576 words)

	RECOVERY AND BUFFER MANAGEMENT (Site not responding. Last check: 2007-11-04)
		Buffer manager is a specialised virtual memory manager since needs of a database are somewhat more specialised than an ordinary operating system.
		Buffer manager interacts with the crash recovery system to decide on what can be written back to disk.
		Some recovery algorithms permit the buffer manager to steal dirty main memory pages (a dirty page is a page in which data has been updated by a transaction that has not been committed) by writing them to disk before the transactions that modify them commit.
	www.cs.jcu.edu.au /Subjects/cp3020/1995/9/node5.html (484 words)

	Buffer Management
		Wolfgang Effelsberg, Theo Härder: Principles of Database Buffer Management.
		This excellent survey and classification of buffer allocation and replacement algorithms for database buffers is a must for everyone interested in buffer management.
		On page 147 the Starburst buffer pool manager is sketched: It uses a version of the clock algorithm incorporating a hint mechanisms.
	www.informatik.uni-trier.de /~ley/db/dbimpl/buffer.html (1150 words)

	Self-manage data buffer memory
		That's followed by an abstract data buffer scheme, illustrated by a pseudo implementation, that solves many of those problems, followed by code snippets demonstrating the solution's benefits.
		Because you must specify the size when a buffer is created under the conventional allocation scheme, a data provider, which presumably knows the size of the data it provides, is the best party to perform the buffer allocation operation.
		As an alternative, by centralizing the memory management and data copying operations, the proposed abstract buffer immediately eliminates the possibilities of inconsistent memory management and buffer overflow.
	www.ibm.com /developerworks/library/wa-memmng/?ca=dgr-lnxw914Self-manageMemory (2334 words)

	CERT Advisory CA-2003-24 Buffer Management Vulnerability in OpenSSH
		There is a remotely exploitable vulnerability in a general buffer management function in versions of OpenSSH prior to 3.7.1.
		When the buffer is cleared, an improperly sized chunk of memory is filled with zeros.
		Cray is vulnerable to this buffer management error and is in the process of compiling OpenSSH 3.7.
	www.cert.org /advisories/CA-2003-24.html (1719 words)

	Buffer Management (DLC: Platform SDK)
		The buffer management provided in the Win32 DLC implementation is different than the buffer management provided in other implementations.
		The DLC buffer pools are dynamically expanded during LLC_READ, LLC_DLC_FLOW_CONTROL, and LLC_BUFFER_GET commands if the size of the free buffers is less than the specified minimum threshold size for the application.
		Because the DLC driver locks all transmit buffers that are not in the buffer pool, you should avoid using a large number of small buffers for transmitting data.
	msdn.microsoft.com /archive/en-us/dlc/dlc_3h84.asp?frame=true (290 words)

	Buffer Management (Site not responding. Last check: 2007-11-04)
		Representative cases and applications include on-chip and off-chip caches, virtual memory, buffer caches for I/O data, disk caches, proxy caches, file systems, databases, and many others.
		A critical component in caching management is its replacement algorithms to fully utilize the limited cache space by effectively exploiting the data locality.
		We have also looked into the issues of effectively managing the data replacement in Window systems, in disk caching in data grid, and in multi-level caching in distributed systems.
	www.cs.wm.edu /hpcs/WWW/HTML/replacement.html (327 words)

	Buffer Management
		The buffers will tell you about the health of the system and any individual operation, the status of a work order and where to focus improvement.
		To manage the buffer we divide it into three zones, let's call them Red, Yellow, Green.
		When things don't show up in the buffer according to plan, we have what we call a "hole." If we don't see it with six hours left we will penetrate into our yellow zone, which is watch and plan.
	www.cmg-toc.com /html/buffer_management.html (264 words)

	Buffer Management Strategies (Site not responding. Last check: 2007-11-04)
		Each query is provided separate list of buffers managed by LRU discipline, number of buffers query is entitled is predicted by hot set model.
		Each localit set is managed separately by a discipline selected according to the intended usage of the file instance.
		Minimization of I/Os is key, and buffer management strategies is critical for this task.
	swig.stanford.edu /pub/summaries/database/buffer_mgmt.html (862 words)

	FS-733 - Riparian Buffer Management Riparian Buffer Systems (Site not responding. Last check: 2007-11-04)
		When this area is planted in such a way to protect the waterway from negative impacts of the adjacent land use it becomes a buffer, specifically, a riparian buffer.
		By incorporating vegetative riparian buffers along as much of the length of a watercourse as is possible, runoff is intercepted, slowed, and allowed to percolate into the ground, recharging our groundwater.
		Within the riparian buffer, the water-holding capacity of the soil increases; this moderates flooding and recharges groundwater supplies.
	www.agnr.umd.edu /MCE/Publications/Publication.cfm?ID=17&cat=8 (578 words)

	OpenSolaris Forums: Dtrace Buffer management ...
		I know that you can configure the dtrace buffer size using the "bufsize" option but I'd like to know what size of buffer is used by default when I don't configure anything.
		I looked at the dtrace guide, and in case of a switch policy involved, I have been understood that dtrace allocates two buffers (an active and an inactive) per CPU.
		There is a pair of buffers for each virtual processor.
	www.opensolaris.org /jive/thread.jspa?threadID=9145&tstart=300 (1325 words)

	Adaptive Jitter Buffer Management for Voice over IP
		Closely related to the Jitter Buffer Manager is frame erasure, which is used to compensate when a packet has not arrived in time for playout.
		Adaptive Jitter Buffer Management utilizes an algorithm that enables the RISC processor to delay until the last possible millisecond before it must notify the DSP that frame erasure is required.
		The dynamic buffer adjusts the balance between speech quality and packet-delivery reliability by increasing the buffer size if it is too short (lots of packets are arriving too late for playout) or decreasing the size if it is too long (playout is delayed too long with delay becoming intolerable).
	www.tmcnet.com /usubmit/2004/May/1041348.htm (2613 words)

	Buffer Management (Site not responding. Last check: 2007-11-04)
		Memory for a sound buffer can be lost in certain situations: for example, when buffers are located in sound card memory and another application gains control of the hardware resources.
		If successful, this method restores the buffer memory and all other settings for the buffer, such as volume and pan settings.
		However, a restored buffer may not contain valid sound data, so the owning application should rewrite the data to the buffer.
	msdn.microsoft.com /library/en-us/directx9_c/Buffer_Management.asp?... (280 words)

	Buffer Management
		The only viable solution to address this problem is to build large memory buffers to cache data for reuse by taking advantage of low price and large capacity of DRAM memory, and to prefetch data for predicted future use by taking advantage of high and idle bandwidths of networks.
		First, existing memory buffer management lacks efficient mechanisms to learn and adapt certain types of access patterns and locality behaviors of applications, causing low memory buffer hit ratios for some important applications.
		Finally, memory buffer management in operating systems has little knowledge of data layout in disks and their physical configuration.
	www.cse.ohio-state.edu /hpcs/WWW/HTML/IO-performance.html (571 words)

	Force10 Networks: Buffer Management (Site not responding. Last check: 2007-11-04)
		DBP-sized buffers, together with RED congestion avoidance, can be used to optimize the utilization of congested links by TCP applications.
		While large buffers primarily benefit long-term TCP application flows, QoS functionality can be leveraged to allocate appropriate levels of buffering and bandwidth to different classes of traffic and to protect delay-sensitive applications from excessive queuing delays associated with large buffers.
		Adequate buffering is necessary to minimize packet loss and to maximize the utilization of the end-to-end network.
	www.force10networks.com /applications/buffermgmt.asp (664 words)

	Download Database.com - Database Management Download Directory
		An application-specific native XML data manager built on Berkeley DB DBXray for Sybase ASE Performance Monitoring Tool
		Part of the Data Management Tools for z/OS Universal Database for Linux, UNIX and Windows
		Manage and master the everyday challenges of database availability and performance
	www.downloaddatabase.com /databasemanagement/databasemanagement.htm (960 words)

	Anson & Abenaki Shoreline Buffer Management Plan
		Madison, ME As part of the relicensing of the Anson and Abenaki hydroelectric projects in Madison, Maine, Kleinschmidt was hired to develop a Shoreline Buffer Management Plan (SBMP).
		The purpose of the plan was to identify significant environmental, recreational and cultural resources on MPI-owned land within the Anson and Abenaki Project areas and to establish buffer lands to protect those resources.
		The SBMP identifies buffer management guidelines to help ensure that the ecological integrity and public uses of the shoreland areas are preserved and managed according to stakeholder and client objectives.
	www.kassociates.com /pds/environmental_studies/ansonabenaki.htm (214 words)

	N-151: OpenSSH Buffer Management Error
		When a function that expands the size of a buffer detects that the new size will be greater then 10Meg it generates a fatal error.
		When the error is generated, the function incorrectly sets the size of the allocated buffer to a value larger than the actual allocation.
		The description of this vulnerability exposes the fact that if a buffer in sshd can be expanded beyond about 10Meg, that sshd will shut down by design.
	www.ciac.org /ciac/bulletins/n-151.shtml (764 words)

	bsdforums.org - FreeBSD, OpenBSD, NetBSD, MacOS X, Darwin, Linux, BSD Unix forums, message boards, discussions and ...
		FreeBSD has formally announced a security advisory entitled "OpenSSH buffer management error" for the now famous OpenSSH advisory (OpenSSH has released a new version 3.7.1 to address this).
		There is a lot of commotion over this buffer issue.
		In order to overflow this buffer, a client must be able to connect to
	www.freebsdforums.org /forums/showthread.php?threadid=14213 (1931 words)

	Buffer Management (notes)
		Buffer pool is interposed between relational operators and disk manager
		Consider a buffer pool with 200 frames and a relation with b
		The cost benefits from a buffer pool (with n frames) is determined by:
	www.cse.unsw.edu.au /~cs9315/00s1/lec/buffer/notes.html (831 words)

	ManuSync - Advanced Planning & Scheduling
		The ONLY Advanced Planning and Scheduling Solution with Buffer Management and Diagnostics For Perfect Execution and a ONE Year ROI guarantee!
		Because of the unique application of strategically placed time buffers, the schedules produced are immune to Murphy.
		buffer management and diagnostics • FAQs • company • partners
	www.manusync.com (175 words)

	Software Project Management
		Project management in the fast lane, by Robert C Newbold on Critical Chain and Buffer Management.
		Infowit is a web-based project management software solution that allows clients, vendors, and agencies to communicate and collaborate on projects in real-time.
		Women in Project Management (WiPM) is a special interest group of the APM that addresses the development and promotion of women working in project management environments and the development of the project management discipline through the contribution of women.
	www.comp.glam.ac.uk /pages/staff/dwfarthi/projman.htm (4113 words)

	Buffer Management Vulnerability in OpenSSH
		There is a remotely exploitable vulnerability in a general buffer management function in versions of OpenSSH prior to 3.7.
		It may also be possible for an attacker to execute arbitrary code.
		A vulnerability exists in the buffer management code of OpenSSH.
	www.state.nj.us /Support/insidenj/notice/030916a.html (488 words)

	Communication Buffer management (Site not responding. Last check: 2007-11-04)
		Thus, to implement this operation, we need a routine that can be called repeatedly to get the next m bytes from the user
		The implementation of the MPI collective routines provided with MPICH will use these routines express the algorithms.
		These routines also provide a way to specify a data area that may be used in store-and-forward algorithms, without requiring copies to and from an intermediate device buffer.
	www-unix.mcs.anl.gov /mpi/mpich/adi3/adi3man/node44.htm (230 words)

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