MONITORING AND OPTIMIZATION Essays - Computer Storage Devices

MONITORING AND OPTIMIZATION Essays - Computer Storage Devices MONITORING AND OPTIMIZATION PERFORMANCE MONITOR AND NETWORK MONITOR PERFORMANCE MONITOR Windows NT Object Counters in Performance Monitor OBJECTPURPOSE CacheL2 cache performance Logical diskMass storage performance, including network storage MemoryMemory performance and usage ObjectsProcess and tread counts Paging fileVirtual memory usage Physical diskHD performance Process Performance of executing processes Processor Processor(s) performance SystemWindows NT performance Thread Individual thread performance You will also see objects for each network service installed. MONITORING FOR PROCESSOR BOTTLENECKS MAJOR PROCESSOR RELATED COUNTERS TO WATCH: Processor: %Processor Time - How busy the microprocessor is. Processor is a bottleneck if sustained >80% Processor: Interrupts/sec - Rate of service requests from peripheral devices. If you have a high rate of interrupts/sec with no corresponding hardware functions then you may have a bad piece of hardware. Should be between 100 and 1000. Spikes to 2000 are ok. System: Processor queue length - Number of threads waiting to be serviced. >2 then processor is a bottleneck. Queue length will always be zero unless you are also monitoring a thread specific counter (Context switches/sec is number of threads switched/sec by the processor and is good to use). MONITORING THE DISK FOR BOTTLENECKS IF THE DISK LIGHT IS ON ALL THE TIME, YOU NEED MORE RAM More Ram will increase the size of the disk cache and decrease page swapping to disk and will increase the apparent speed of the disk. Logical disk vs. Physical disk Two different objects in Performance monitor. Logical disk measures performance of stripe sets, volume sets and mapped network drives. Physical disk measures real transfers to and from actual hard disk or RAID set. Used to compare disks and to provide specific information about a disk. MAJOR DISK RELATED COUNTERS TO WATCH: Memory: Pages/sec shows the number of memory pages swapped out to disk per second. Useful with %disk time: modify the size of the page file and watch the result of these two disk counters. %Disk time does not directly measure the disk. It shows how much time the processor is spending servicing disk requests. Use with Processor: %Processor Time to determine if the disk is eating up the processor. Disk bytes per second shows how fast your disk is. Copy a big file and see if your disk is way fast or a piece of junk. Average disk bytes per transfer shows how big the average transfer is. Larger transfers are more efficient. Current Disk queue length shows how much data is waiting to be transferred to disk. A long queue means you need a faster disk. NOTE: You must enable disk counters, they are disabled by default and will cause a degradation of about 2% in performance due to processor load of the counter. To enable disk performance counters: type diskperf -y at the command prompt to enable auto counter startup at boot. Reboot. To disable disk performance counters: type diskperf -n at the command prompt to disable auto counter startup at boot. Reboot. NETWORK MONITOR Is a trimmed down version of what ships with SMS. Is installed by adding Network monitor tools and agent through the services tab of the network icon in control panel. Can provide real time and cumulative saved data. FOUR MAIN SECTIONS Bar graph in real time. Session statistics shows cumulative data about conversations taking place on the network in real time. Station statistics shows information on each conversation. You must specify the machine (station) you want to monitor and is cumulative for the monitoring period. Summary statistics are cumulative and show network, captured, per second, NIC (MAC), and NIC error statistics. Data can be filtered by protocol, computer address, or protocol properties. Filter by computer address to identify a NIC sending data frames when not in use (bad NIC). Netmon can be dual password protected and will let you identify other instances of Netmon running on the network. This is to prevent unauthorized users from capturing data to which they do not have permission to access. Conflict Sybex Network Press: MCSE NT Server 4 Study Guide says, ?The limited version of network monitor that ships with Windows NT Server does not support promiscuous mode. Therefore, it can capture only packets sent to the server or to all stations.? But? Windows NT Online Help for Performance Monitor says, The Nework Monitor agent collects statistics from the computer?s network adapter card by putting it in promiscuous mode.?

Exercise in Using the Correct Forms of Irregular Verbs

Exercise in Using the Correct Forms of Irregular Verbs This exercise will give you practice in using the correct forms of irregular verbs. Before attempting the exercise, you may find it helpful to review these two articles: Introduction to Irregular VerbsPrincipal Parts of Irregular Verbs Exercise Complete each sentence below with the appropriate present, past, or past-participle form of the irregular verb in italics. When youre done, compare your answers with those below. Uncle Bert told me he had _____ (sell) his car for one dollar to a needy family.No one answered when Freddie _____ (ring) the doorbell.We nearly _____ (freeze) our toes off in a bedroom that wasnt heated.Jessica suddenly remembered that a week ago she had _____ (lend) her brother a hundred dollars.My sister left the birthday party early because she had _____ (drink) too much Coca Cola and made herself sick.Last Sunday morning we discovered that the old boiler had _____ (spring) a leak.John went to the blackboard and _____ (draw) a picture of the playground.Dont call the world dirty because you _____ (forget) to clean your glasses.Jobie had _____ (string) a clothesline from the top of the trailer to the woodshed eaves.The group had _____ (begin) to split up into cliques and factions.Buddy had never _____ (ride) in a limousine before.Habit is a cable; we _____ (weave) a thread of it each day, and at last we cannot break it. (Horace Mann)The paper reported that a major earthquake had __ ___ (shake) the interior of Mexico, killing thousands. When we were five years old, Mike and I solemnly _____ (swear) to remain friends forever.Moira had _____ (mean) to send her father a birthday card, but as usual she forgot.The force of the shock from the explosion _____ (break) every window in the old school building.Uncle Bert had _____ (go) to the post office at lunchtime but never came back.Trying to be good Samaritans had _____ (bring) us nothing but trouble.The student insisted that someone had _____ (steal) his sunglasses, but everyone could see that they were still sitting on top of his head.Walt Disney claimed that he loved Mickey Mouse more than any woman he had ever _____ (know). Answers   Uncle Bert told me he had  sold  his car for one dollar to a needy family.No one answered when Freddie  rang  the doorbell.We nearly  froze  our toes off in a bedroom that wasnt heated.Jessica suddenly remembered that a week ago she had  lent  her brother a hundred dollars.My sister left the birthday party early because she had  drunk  too much Coca Cola and made herself sick.Last Sunday morning we discovered that the old boiler had  sprung  a leak.John went to the blackboard and  drew  a picture of the playground.Dont call the world dirty because you  forgot  to clean your glasses.Jobie had  strung  a clothesline from the top of the trailer to the woodshed eaves.The group had  begun  to split up into cliques and factions.Buddy had never  ridden  in a limousine before.Habit is a cable; we  weave  a thread of it each day, and at last we cannot break it. (Horace Mann)The paper reported that a major earthquake had  shaken  the interior of Mexico, killing thousands.When we were five years old, Mike and I solemnly  swore  to remain friends forever. Moira had  meant  to send her father a birthday card, but as  usual  she forgot.The force of the shock from the explosion  broke  every window in the old school building.Uncle Bert had  gone  to the post office at lunchtime but never came back.Trying to be good Samaritans had  brought  us nothing but trouble.The student insisted that someone had  stolen  his sunglasses, but everyone could see that they were still sitting on top of his head.Walt Disney claimed that he loved Mickey Mouse more than any woman he had ever  known

Strategic analysis of IKEA Essay Example | Topics and Well Written Essays - 4500 words

Strategic analysis of IKEA - Essay Example plistic style matches also the no-frills product lines and customer service ethos and chimes with the company’s origins as a small Swedish family business which started in 1958. In reality, however, the company has a sophisticated approach to its business, and this is built on a suite of interlocking strategies. This paper will consider five of these in turn: Alliances/Agreements, Human Resource Factors, Knowledge Management and Competencies, Cultural and Strategic Fitness, and finally Environment/Sensitivity issues and analyse the appropriateness and effectiveness of each. IKEA’s phenomenal success in expanding from Europe to America and Asia could not have happened without a network of well-chosen alliances and long term business relationships with suppliers, manufacturers and logistics operators. Planning of supply and demand across the whole operation is done centrally with the aid of computerized APS (advanced planning systems) and this requires advance agreements on volumes and capacities for both IKEA and the different suppliers. (Jonsson et al, 2008, p. 99). The aim of this approach is to make optimal use of resources throughout the whole chain and to minimize stock levels. Where possible, and when quality control processes are in place at the required level, suppliers are tied into a system of direct delivery to the point of sale. Johnsson et al. identify four main â€Å"enablers† for this planning process â€Å"planning organisation, data quality, software support and project and change management† (Jonsson et al, 2008, p . 100). The last of these entails significant time and resources spent by IKEA managers out in the field: â€Å"IKEA has over time struggled with achieving consistent result from its implementation efforts†¦ A Four-Step model has been defined clearly recognizing the need to create awareness in the first step, create interest in what is coming in the second step, making users try out the solution in the third step and finally adopt

Rising Cost of Health Insurance Essay Example | Topics and Well Written Essays - 500 words

Rising Cost of Health Insurance - Essay Example An entire family's coverage can easily be lost because of retirement, divorce, or a simple switch from full to part-time work. USA Today claims: "Employers say there is no concensus on what to do, long term, to slow health spending," which proves that an agreement needs to be met soon. This issue seriously affects many different individuals, from company owners to the middle-class. Small business suffers especially, but often compensates by hiring young employees; eighteen to twenty-four year olds have the least health coverage in America. Some companies have "eliminated coverage for dependents, while others have canceled their medical plans altogether" (Porter). It is unfair that so many must suffer because of this cost. Two reasons health care is expensive are incredible advertisement costs and a need for advanced machines used for diagnoses. The need for costly medical machines makes sense, but it is unfortunate that countless people aren't receiving proper care due in part to the high prices of commercials. Costs can increase over ten percent in one year, and usually do not go back down afterward. It is disappointing to consider where some portions of health insurance money are headed and how much better they could be spent. Adding to the problem, premiums cut into funds mean

Pollution affects the health of all living thing. Essay Example for Free

Pollution affects the health of all living thing. Essay Many peoples, animals and plants depend on water for survival of life but because of water pollution all living things must suffer or die from the effects caused by water pollution. Man is busy inventing new things every day and the consequences of these inventions affect the land, air and stream and causes water pollution. Some of the causes of water pollution are industries trying to fulfill the need of consumers by inventing new products and creating jobs for people. Another cause of water pollution is the chemicals that people use on their lawns and gardens. Water pollution can also be caused by land movement, avalanche and erosion from the weather. Animal also causes water pollution but they are unaware that they are actually causing pollution to the stream, rivers and lakes. The effects of water pollution in our stream, lakes and ocean have a huge impact on the living creatures that uses the water for their habitat. When the beaches and lake are polluted, tourists do not spend time to visit there, animals also die from consuming garbage. Another effect of water pollution is the cause of an oil spill in the ocean which has a huge impact on the living creatures and wild life that uses the polluted water. It is important for individual living in this planet to prevent water pollution. The planet is very precious for all it living thing. People have to use the planet resources carefully, and prevent water pollution to it streams, lakes and rivers. We all share this plant it earth, air, land and water. When one of these characters of the p lanet is affected it also affects another. One can use water People can purchase items that they need and not want. They can reuse and recycle items that are useable. One can use organic material in their gardens and lawns. Farmers can reduce the use of chemical in their crops. One can walk, bike or use transit to get around. Individual should not put sediments, nutrients, toxic chemicals, pathogens in water. These are some of the thing people can do to prevent water pollution.

Biomechanics Essay -- essays research papers

The term biomechanics means the study of the structure and function of biological systems using the methods of mechanics. Biomechanics studies the process of kinematics and develops artificial limbs and footwear specifically to aid the body in performance. The study of biomechanics also includes the stress testing on crash dummies in car accidents and any sport where stress is placed on the body in order to produce performance. The type of stress specifically is the joint stimulation and bone modeling stress.   Ã‚  Ã‚  Ã‚  Ã‚  The most common use of biomechanics is in the development of prosthetic limbs used for the handicapped. Most work on prosthetics is done in laboratories where scientists use calibrated machines to test stress and wear of artificial limbs. These days, prosthetics, are made of titanium and lightweight fiberglass to make a near perfect match with most people. The most common prosthesis is the replacement in a below the knee amputation. The American Society of Biomechanics (ASB) held a meeting at Clemson University of 1997 in order to develop a sports prosthesis that would stand up to every day flexing of the knee for performance in sports.   Ã‚  Ã‚  Ã‚  Ã‚  In order to develop this prosthesis they had to go through two main phases, the analysis of a jogger wearing a standard walking prosthesis and computer simulation of the flexing of the knee on this walking prosthesis. They had to measure rotation, weight bearing, moments, and t...

Package Comparison Materials

Packaging Materials Comparison/G. King 1 Packaging Materials Comparison George King #3141824 Date: 24 Mar 2013 Dr. Carmen Mousel American Military University TLMT351 D001 Win 13 Introduction What are advantages and disadvantages within the supply chain for a paper- based shipping container, a wood-based shipping container and a plastic-based shipping container for use as a distribution package (a non-retail shipping package)? Advantages for using paper-based shipping containers are due to the corrugated box being a sustainable, versatile, and lightweight material.The paper-based shipping container can be used for multitudes of products and can be made into a custom-manufactured shipping container for those products. Typically these containers are used for transporting a wide range of goods such as packaged goods, produce, meat products, and etc. Corrugated box usages are good for the environment due to it being both reusable and recyclable. The paper product can be compostable which will be good for the environment since it will not end up in a landfill if properly handled.Since the product is biodegradable it is better for the environment. 1 Disadvantage for using paper-based shipping containers are due to the paper product coming into contact with outside elements such as being susceptible with wet weather conditions such as rain and snow. Stacking for long periods of time are not good since over time they will lose their shape without some sort of pallet or contour structure included into the design. 1 ? Advantages for using a wood-based shipping container is due to the sturdiness of the product for protecting the contents further.Having a wood container available will allow for it to be exposed to harsh climate changes and rough handling. Wood is less likely to fall apart due to outside elements and easier for movement in and around the warehouse. These containers are normally built for heavy products since strength is needed for moving heavy loads. Wood bo xes are also needed when stacking heavy loads. The wooden crates can be easily transported in and around distribution centers once skids are attached to the bottom for forklift accessibility, unlike boxes where a pallet is needed for movement.Modification to wood crates or containers can be easily modified with doors and ramps making it easy to move items in and out. They are also eco friendly for being able to use the wood crates more than once. 2 ? Disadvantage to using wood is that crates can get to extreme temperatures inside; they can get too cold and or too hot depending on location. Controlling temperature is an issue. Also, having free space for stacking and moving wood crates can be hazardous. Wood also begins to wear out if utilized multiple times.Pests are an issue, meaning termites may have a field day when wood is exposed over time. Pathogens are of some concern as food inside containers could be exposed to bacterium E. coli and salmonella. 2 ? Advantages for using plas tic based shipping containers are normally seen with the use of drums. These containers are high in molecular weight and density polyethylene. They can withstand temperatures and are corrosion resistant. They can be used for both food and chemicals. Plastic drums are self supporting and can be used horizontally or vertically.Plastic can be easily molded into the contents of the product for further securing of the product. Handles can be installed for ease of movement. The imagination can run for a long time for molding your requirement. They can store just about anything. Many industries use plastic containers for warehouse operations, because they come in large sizes and they are stackable. Plastic is durable, cost effective, and can last for a long time. 3 ? Disadvantages of using plastic containers are that they hold smells of past transported product; therefore it is expensive to clean plastic.Plastic can also be a health issue. Plastic is not bio degradable and many companies w ill not recycle plastics. When thinking of using plastic for different tasks then it may not be the best option. 4 References 1. Website, http://www. internationalpaper. com/US/EN/Products/Transport/ShippingContainers. html 2. Website, http://www. container-transportation. com/shipping-container-housing. html 3. Website, www. usplastic. com/catalog/item. aspx? itemid=22827&catid=459 4. Website, http://www. ehow. com/info_8562652_advantages-disadvantages-plastic-containers. html