Maximum throughput - Factbites

Maximum throughput - Factbites
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Topic: Maximum throughput

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	Throughput
		The maximum Comms1 throughput achieved on two T9000 transputer depends on the network latency, caused by the C104 switches that interconnect the two transputers.
		This is less than the maximum C101 throughput of 9.2 Mbytes/s.
		Due to the use of a different acknowledgement scheme, interconnecting two DSNICs via a number of C104s does not affect the maximum throughput, it only affects the latency.
	hsi.web.cern.ch /HSI/dshs/publications/wotug21/dsnic/html/node14.html (362 words)

	Satellite Based TCP Network Simulation for Cell drop study
		For Maximum Segment Size set to 9180 octets the Maximum Throughput is achieved, it concludes that MSS is approximately equals to TCP buffer size.
		From simulation it is observed that the Maximum Throughput for TCP connection with background traffic in Satellite based network is available with TCP buffer size of 9000 octets and Maximum Segment Size of 9180 octets.
		The analysis consists of optimization of TCP parameter such as Throughput, Retransmission Percentage, and Maximum Segment Size.
	www.geocities.com /megh55555 (1140 words)

	Definition: throughput
		Note 1: Throughput may vary greatly from its theoretical maximum.
		Note 2: Throughput is expressed in data units per period of time; e.g., in the DDN, as blocks per second.
		The maximum capacity of a communications channel or system.
	www.atis.org /tg2k/_throughput.html (97 words)

	lab1
		What is the maximum theoretical throughput in Kbytes/sec in each case: (Assume that he maximum theoretical throughput in the loop-back address tends to infinite).
		By comparing the measured throughput to the bandwidth of the network between the computers, you will be able to tell whether data is being transferred near the rated speed of the network.
		In this lab you will measure the data throughput rate between two computers that are connected to a single network.
	www.cs.purdue.edu /homes/yau/cs422/labs/lab1 (900 words)

	Throughput - Wikipedia, the free encyclopedia
		Mathematically, the maximum digital throughput for a given analog bandwidth and noise level is determined by the Shannon-Hartley theorem.
		Throughput is the amount of data that can be transferred through a digital connection in a given time period (in other words, the connection's bit rate).
		Throughput on the other hand is the amount of data that is transferred over a period of time.
	en.wikipedia.org /wiki/Throughput (554 words)

	Throughput Calculations
		torr, then the maximum throughput is given by:
		Expressing throughput in common (rather than SI) units of pressure-volume per fixed time emphasizes an important aspect of calculation.
		atm cc/min (and let's assume this is the total gas load or throughput) is attached to a chamber and the indicated pressure is 1.5 x 10
	www.lesker.com /CFDOCS/newweb/Technical_Info/ThroughputCalculations.cfm (204 words)

	Throughput - Wikipedia, the free encyclopedia
		Mathematically, the maximum digital throughput for a given analog bandwidth and noise level is determined by the Shannon-Hartley theorem.
		Throughput is the amount of data that can be transferred through a digital connection in a given time period (in other words, the connection's bit rate).
		Throughput on the other hand is the amount of data that is transferred over a period of time.
	en.wikipedia.org /wiki/Throughput (554 words)

	Cotse - Connected: An Internet Encyclopedia - 4.2.2.6 Maximum Segment Size Option: RFC-793 Section 3.1
		Larger segments increase throughput by amortizing header size and per-datagram processing overhead over more data bytes; however, if the packet is so large that it causes IP fragmentation, efficiency drops sharply if any fragments are lost [IP:9].
		The maximum size of a segment that TCP really sends, the "effective send MSS," MUST be the smaller of the send MSS (which reflects the available reassembly buffer size at the remote host) and the largest size permitted by the IP layer:
		TCPhdrsize is the size of the TCP header; this is normally 20, but may be larger if TCP options are to be sent.
	www.cotse.com /CIE/RFC/1122/92.htm (572 words)

	What are Throughput and Bandwidth?
		When applied to the performance of a protocol such as 802.11g, throughput and bandwidth refer to the theoretical maximum, not the guaranteed performance.
		Estimating your practical wireless throughput and bandwidth is as much an art as a science.
		These words both mean measuring the amount of data that gets between two places in a network.
	kbserver.netgear.com /kb_web_files/n101532.asp (187 words)

	tech03.wd
		The throughput plot shown in Figure 14 illustrates the loss of photons due to the critical angle reflections from the two Pt coated mirrors.
		The horizontal and vertical FWHM values as determined from Figure 13 are approximately 100 by 28 mm, which are in agreement with the expected geometrical values of 95 and 17 mm.
		The FWHM value for the horizontal beam size as determined from Figure 9 is approximately 700 mm, which agrees with the expected value of 550 mm within allowed measurement error.
	www.csrri.iit.edu /csrri_private/chrzas/csrri-jjc-1995-03/tech03.wd (1810 words)

	3
		(Remember, the maximum instruction throughput possible under ideal conditions is 1 instruction per clock, but many more cycles with no bubbles would be needed to approach that maximum.) But because of the pipeline stall, the processor only completes 5 instructions in 10 clocks, for an average instruction throughput of 0.5 instructions per clock.
		0.5 instructions per clock is half the theoretical maximum instruction throughput, but of course the processor spent a few clocks filling the pipeline so it couldn't have achieved that after 10 clocks even under ideal conditions.
		For each clock in which there's a bubble in the write stage, the pipeline's instruction throughput is 0 instructions/clock so its average instruction throughput for the whole period continues to decline.
	arstechnica.com /articles/paedia/cpu/pipelining-2.ars/3 (1810 words)

	BayArea.net - DSL Access Services
		Upstream throughput will be 416Kbps maximum with 80% minimum throughput available.
		The maximum download throughput can be 3008 Kbps (3 megabits per second) with 1.536 Mbps (megabits per second) the minimum throughput available.
		The maximum download throughput can be 6016 Kbps (6 megabits per second) with 1.536 Mbps (megabits per second) the minimum throughput available.
	corp.bayarea.net /bayarea/dslmain.shtml (1544 words)

	Glossary - #
		It has eight radio channels, each with a maximum link rate of 54 megabits per second; however, maximum user throughput will be about half this, and the throughput is shared by all users of the same radio channel.
		Also called Wi-Fi, 802.11b specifies three radio channels, each with a maximum link rate of 11 megabits per second; however, maximum user throughput will be about half this, and the throughput is shared by all users of the same radio channel.
		With data rates of less than 220 kilobits per second over 75 meters, 802.15.4 (dubbed "ZigBee" by the vendor group that promotes it) is suitable for many automation and remote-control applications.
	www.gartner.com /6_help/glossary/GlossaryNumbers.jsp (1795 words)

	This is my seminar home page
		Reference: Performance Analysis of the IEEE 802.11 Distributed Coordination Function by Giuseppe Bianchi 8.Comparison of simulated results and analytical results The following relations are compared: 1.Throughput v/s number of stations 2.Throughput v/s transmission probability for basic and RTS/CTS 3.Throughput v/s initial size of backoff window for basic and RTS/CTS 4.Throughput v/s maximum backoff stage.
		Reference: Performance Analysis of the IEEE 802.11 Distributed Coordination Function by Giuseppe Bianchi 6.Expression for Maximum saturation throughput.
		Reference: Performance Analysis of the IEEE 802.11 Distributed Coordination Function by Giuseppe Bianchi 5.Throughput Expressions for saturation throughput for both basic access mechanisms and RTS/CTS mechanisms are derivated using above results.
	www.it.iitb.ac.in /~chaitanya/report.html (409 words)

	Ethernet Frame Calculations
		To calculate the throughput provided by the link layer, one must first calculate the maximum frame rate for this size of frame.
		Example 2: Calculate the maximum throughput of the link layer service provided by Ethernet
		The maximum frame payload is 1500 Bytes, this will offer the highest throughput, when the frames are transmitted by only one node on the network (i.e.
	www.erg.abdn.ac.uk /users/gorry/course/lan-pages/enet-calc.html (409 words)

	USRobotics MAXg Wireless Networking
		Data throughput is the actual “amount” of data transmitted (upstream) and received (downstream) by a wireless product, while the signaling rate, or data rate, represents a theoretical maximum.
		So, while wireless networking gear is often classified according to its standards-based signaling rate, such as 54 Mbps for 802.11g, the actual data throughput, or data being transmitted, is often just a fraction of the signaling rate’s theoretical maximum.
		In order to understand the true capabilities and efficiencies (as well as inefficiencies) of any network, wired or wireless, a distinction must first be made between two commonly misunderstood networking terms: data throughput and signaling rate.
	www.usr.com /maxg/performance.asp?loc=unkg (413 words)

	Protocol Overhead
		Inter Frame Gap (IFG) Theoretical maximum UDP throughput on GigE using jumbo frames: (9000-20-8)/(9000+14+4+7+1+12)1000000000/1000000 = 992.697 Mbps Theoretical maximum* TCP throughput on GigE without using jumbo frames: (1500-20-20-12)/(1500+14+4+7+1+12)1000000000/1000000 = 941.482 Mbps Theoretical maximum* UDP throughput on GigE without using jumbo frames: (1500-20-8)/(1500+14+4+7+1+12)*1000000000/1000000 = 957.087 Mbps
		An excellent paper on ATM overhead was written by John Cavanaugh of MSC.
		HDLC has no set frame size limit, nor does PPP specify the payload size, you just keep reading until you see a Flag byte.
	sd.wareonearth.com /~phil/net/overhead (1323 words)

	4.2 Comparing LAM, MPICH, and MVICH Performance
		For MPICH, the maximum attainable throughput drops by approximately 7% for an SK-NET and by approximately 15% for an ACEnic with MTU of 9000.
		For LAM, the maximum attainable throughput is increased by approximately 42% for SK-NET and by approximately 36% for the ACEnic with MTU of 9000 respectively.
		For LAM using MTU size of 1500 bytes, the maximum attainable throughput is about 216 Mbps, 188 Mbps, and 210 Mbps with latency of 140
	www.linuxshowcase.org /2000/2000papers/papers/ong/ong_html/node9.html (895 words)

	Shredder - Paper Shredder - Portable Shredder - and more..
		Model 5270M Small/Large Office Micro-Cut Paper Shredder • Auto start/stop • Auto stop anti-paper jammer • Shreds staples and paper clips • Wastebin included • Bin-full indicator Recommended Sheets/Day—50,000 Throat Width—15 Maximum Sheets (20#)—10-11 Speed (Feet/Minute)—35 Throughput (Sheets x Speed)—420 Shred Size (Inches)—3/32 x 19/32 Included Wastebin Capacity—32 gallons Size—24w x 19d x 39h Shpg.
		Model 3270M Small/Large Office Micro-Cut Paper Shredder • Auto start/stop • Auto stop anti-paper jammer • Shreds staples and paper clips • Wastebin included • Bin-full indicator Recommended Sheets/Day—40,000 Throat Width—10 Maximum Sheets (20#)—8-10 Speed (Feet/Minute)—25 Throughput (Sheets x Speed)—250 Shred Size (Inches)—3/32 x 19/32 Included Wastebin Capacity—16 gallons Size—18w x 16d x 30h Shpg.
		Model AS1502X Small Office Confetti-Cut Shredder • Auto start/stop • Auto stop anti-paper jammer • Shreds staples and paper clips • Wastebin included • Bin-full indicator Maximum Sheets (20#)—15 Speed (Feet/Minute)—6-3/10 Throughput (Sheets x Speed)—94-1/2 Shred Size (Inches)—1/8 x 1-1/2 Shreds CDs and Credit Cards Included Wastebin Capacity—7-1/2 gallons Size—16-3/4w x 13d x 23-1/2h Shpg.
	www.mightysupply.com /mills/shredder.shtml (895 words)

	Dell Power Solutions
		This configuration had a four-port Gigabit Ethernet LACP channel with a theoretical maximum throughput of 3796 Mbps (4 x 949 Mbps) for single-direction data transfer; that is, into or out of the server.
		So, the theoretical maximum throughput for a four-port Gigabit Ethernet LACP channel in both transfer directions is 7592 Mbps (2 x 3796 Mbps).
		These two values are very close to the theoretical throughput limit of the four-port Gigabit Ethernet LACP channel, demonstrating that the LACP channeling works very efficiently.
	www1.us.dell.com /content/topics/global.aspx/power/en/ps4q02_yang?c=us&l=en&s=esg (3246 words)

	TCP Stack Measurements on Lighly Loaded Testbeds
		The maximum throughput was for 486Mbits/s for 25 streams with a 4096KB window, 2nd was 428Mbits/s for 120 streams and a 1024KB window, and third place was 417Mbits/sec with 12 streams and an 8192KByte window.
		The maximum throughput measured was 855Mbits/s for one stream with a 65536KByte window.
		The numbers in parentheses are the maximum window size configured.
	www-iepm.slac.stanford.edu /monitoring/bulk/fast (3246 words)

	Ethernet Frame Calculations
		To calculate the throughput provided by the link layer, one must first calculate the maximum frame rate for this size of frame.
		Example 2: Calculate the maximum throughput of the link layer service provided by Ethernet
		The maximum frame rate is achieved by a single transmitting node which does not therefore suffer any collisions.
	www.erg.abdn.ac.uk /users/gorry/course/lan-pages/enet-calc.html (588 words)

	EECS 745: Group 10: Encoding and Design
		Hence, the encoding scheme that we should choose for wireless networks must be capable of yielding maximum throughput using minimum bandwidth, that is, be able to transmit maximum amount of data in the available limited bandwidth.
		What encoding scheme would you choose to maximize data throughput, and why would you choose this approach?
		Hence, for wireless networks, the 4B / 5B encoding scheme would prove to be the most appropriate choice, taking the network's limited bandwidth and maximized throughput into consideration.
	www.ittc.ku.edu /~irfancb/745/direct_link/encoding.html (588 words)

	Network Characterization Service (NCS)
		In this case, netest reports the maximum throughput and tells where limits the maximum throughput; in this case, we mean the hardware is not able to probe the available bandwidth, so no available bandwidth information will be reported.
		It also measures available bandwidth, maximum burst size, round trip delay time, and provides information about where the bottleneck is if a protocol cannot fully utilize the available bandwidth.
		-S specifies pause time (ms) between every bursts (tests).
	www-didc.lbl.gov /NCS/netest (553 words)

	ESCON Tuning
		To achieve peak TCP/IP throughput over a switch and through ESCON to MVS, you need to make sure that the maximum packet size possible is used over the ESCON connection.
		Since ESCON does not currently support rfc1323, then the maximum TCP/IP header size is 40 bytes.
		These settings ensure that the maximum packet size across the interface will be a full ESCON interface packet of 4096 bytes.
	www.umiacs.umd.edu /~jhu/DOCS/SP/aix/perf_tuning/escon35.html (224 words)

	3
		Pipeline stalls, or bubbles, reduce a pipeline's average instruction throughput, because they prevent the pipeline from attaining the maximum throughput of one finished instruction per cycle.
		You might be thinking that a pipeline's instruction throughput should always be 1 instruction/clock, because I stated above that a pipelined processor completes a new instruction at the end of each clock cycle in which the write stage has been active.
		In contrast, when the instruction's pipeline is full and the write stage is active, the pipelined processor has an instruction throughput of 1 instructions/clock.
	arstechnica.com /articles/paedia/cpu/pipelining-2.ars/3 (224 words)

	DSP Blocks in Stratix Devices
		Each DSP block is optimized for maximum performance of up to 333 million samples per second (MSPS) per block allowing for efficient implementation of high-precision DSP functions.
		In fact, the DSP blocks in Stratix devices run at 333 MHz to provide data throughput performance of 2.67 giga multiply-accumulate operations per second per DSP block with minimal routing congestion.
		Stratix devices use DSP blocks to achieve the high data throughput necessary for computationally demanding applications.
	www.altera.com /products/devices/stratix/features/stx-dsp.html (478 words)

	Information Headquarters: IEEE 802.11
		802.11b has a maximum throughput of 11 Mbit/s, however a significant percentage of this bandwidth is used for communications overhead; in practice the maximum throughput is about 5.5 Mbit/s.
		Protocols 802.11legacy The original version of the standard IEEE 802.11 released in 1997 and sometimes called "802.11legacy" specifies two data rates of 1 and 2 Megabits per second (Mbit/s) to be transmitted via infrared (IR) signals or in the ISM band at 2.4 GHz.
		The IEEE set up a dedicated task group to create a replacement security solution, 802.11i (previously this work was handled as part of a broader 802.11e effort to enhance the MAC layer).
	www.informationheadquarters.com /Apple_Macintosh/IEEE_80211b.shtml (1257 words)

	Efficient Dynamic Network Flow Algorithms - Hoppe (ResearchIndex)
		Orlin showed that there is always a dynamic flow with maximum throughput that is stationary, and that such a stationary flow can be computed via one minimum-cost (static) network flow problem.
		Abstract: this paper, the throughput of a flow at time ` is the total amount of flow in transit at time ` --- flow that has started in some edge by time ` but has not reached the end of the edge yet.
		He also showed how his result is a generalization of Ford and Fulkerson's maximum dynamic flow algorithm (Update)
	citeseer.ist.psu.edu /648119.html (400 words)

	Gemini Fiber Multiplexer for AS400 and S/3X Wiring
		This feature also allows all new AS/400e controllers to provide their maximum throughput potential, in either 1Mbps Optimized or 2Mbps Express mode, by transparently multiplexing the split-polling feature without requiring performance-robbing PTFs.
		Controller redundancy and maximum fiber optic efficiency are obtained by multiplexing four ports each from up to two separate controllers for a total device capacity of 56 — the highest in the industry.
		All new IBM controllers support the split-polling feature as a means of achieving higher throughput rates, even when connected to standard legacy devices.
	www.5250connect.com /DecisionData/DDgeminimux.htm (415 words)

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