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.?

10 Writers Block Memes to Keep Your Book Afloat

10 Writers Block Memes to Keep Your Book Afloat 10 Writer's Block Memes to Keep Your Book Afloat If you’re a writer, you’re 99% guaranteed to agree that writer’s block is not a lot of fun. Whilst we can offer tips and help you try and overcome writer’s block  and writing strategies, we can also reassure you that you are not suffering alone.The fact that you’re here - possibly having searched for ‘writer’s block memes’ - suggests you’re in need of a little light relief. This post will hopefully provide you with some confirmation that you’re not the only one who’s struggling and remind you that, all in all, writer’s block is a strange and funny thing.1. Your first experience of writer’s block went something like this: What's your favorite writer's block meme? Tell us in the comments and we'll be happy to add it to our list!

English Essays - Acapulco, Walking, Elegant Array, Beating Drums

English Essays - Acapulco, Walking, Elegant Array, Beating Drums English While on vacation in Acapulco Mexico, I, along with my family and friends took a tour by boat to a small resort island. As we approached, I was awestruck by it's beauty. I knew this was going to be fun, but had no idea that this place would be forever etched in my mind. We were greeted at the dock by two natives dressed in brightly colored tropical shirts, white pants and shoes. They were also wearing smiles just as bright. They escorted us to an open-air type restaurant with a thatched roof that was actually attached to the pier at which we docked The restaurant had a casual atmosphere that made us very comfortable. The food was served buffet style, with an elegant array of Mexican and American cuisine. The entertainment provided in the restaurant during and after the buffet was de- lightful. A ten minute introduction to the Mexican culture was followed by an intriguing native dance, performed by a man dressed in an authentic looking costume consisting of only a rawhide g-string with a short apron front. His sandals had leather cords winding halfway up his legs. This dance depicted a story of a hunter and his prey. It was narrated by a woman who was also in costume. Brightly dressed Mexican men were beating drums and banging sticks providing the sound effects for the story. This was truly a great beginning to a wonderful afternoon. Behind the restaurant was a low mountainous area, accessible by walking trails only. We hiked one of these trails, observing the brightly colored tropical plants and trees that flourished on this well maintained terrain. A beautiful waterfall added to the splendor, and when we reached the top, a lookout provided a panoramic view of the entire bay. What a breathtaking sight! There was a bar here, and after a cool drink we decided to head down. We took a different trail down that brought us to the base of the mountain. In front of us, about 150 feet was the beach. It was 90 degrees and the Mexican sun made the sand hot under our feet. However, a gentle breeze kept us comfortable otherwise. On the beach we rented a cabana, which is little more than a thatched umbrella, table and beach chairs. There, we sat and enjoyed one of those big tropical drinks that has fruit on the edge of the glass and a small umbrella of its own. Staring out into the bay from my chair, was possibly the most serene feeling I have had in all my life. There were many people around and they were making plenty of noise, but my mind was absorbed with the natural beauty of this place. It was like none that I had ever seen before. Looking across the bay towards the mainland, with all its hustle and bustle, I felt as if I had found paradise. I had been to the ocean twice before, but only in the U.S., and never to a bay. Bay waters are much calmer, and therefore much clearer-so clear, in fact, that at a depth of six feet I was able to see a penny. The color of the water is also amazingly different from ocean water. The intensity of the blue color is almost fluorescent. After we rested, we decided it was time to get wet, so we donned our snorkeling gear and entered the warm water. I had never snorkeled before, but it wasn't long before I felt comfortable. Most of our experience was in very shallow water and I don't think it was ever necessary to go down more than ten feet. The fish didn't seem to be bothered by our presence, and although I don't know what kind they were, I touched two of them, and there reaction was only to flip there tail. About forty feet out from the beach it was still only about seven or eight feet deep, and that's where the coral appeared. This is something that no television or video could do justice to. The vivid colors of the coral alone were enough to make this whole trip worth while. There were many different types of fish, most of them with vibrant colors,

John H. Ostrom - A Profile of the Famous Paleontologist

John H. Ostrom - A Profile of the Famous Paleontologist Name: John H. Ostrom Born/Died: 1928-2005 Nationality: American Dinosaurs Discovered or Named: Deinonychus, Sauropelta, Tenontosaurus, Microvenator About John H. Ostrom Nowadays, pretty much all paleontologists agree that birds descended from dinosaurs. However, that wasn’t the case in the 1960s, when John H. Ostrom of Yale University was the first researcher to propose that dinosaurs had more in common with ostriches and swallows than with snakes, turtles and alligators (to be fair, the heavyweight American  paleontologist Othniel C. Marsh, who also taught at Yale, had proposed this idea in the late 19th century, but he didnt have enough evidence at his disposal to carry the weight of scientific opinion). Ostroms theory about the dinosaur-bird evolutionary link was inspired by his 1964 discovery of Deinonychus, a large, bipedal raptor that displayed some uncannily birdlike characteristics. Today, its (pretty much) an established fact that Deinonychus and its fellow raptors were covered with feathers, not a popular image a generation ago, and one that even current dinosaur enthusiasts have difficulty accepting. (In case you were wondering, those Velociraptors in Jurassic Park were really modeled after the  much bigger  Deinonychus, disregarding the fact that they were portrayed with green reptilian skin rather than feathers.) Fortunately for him, Ostrom lived long enough to learn about the trove of indisputably feathered dinosaurs recently discovered in China, which cemented the dinosaur-bird connection. When he discovered Deinonychus, Ostrom opened the dinosaur equivalent of a hornets nest. Paleontologists werent used to dealing with muscular, man-sized, predatory dinosaursas opposed to familiar, multi-ton carnivores like Allosaurus or Tyrannosaurus Rexwhich prompted speculation about whether an ostensibly cold-blooded reptile could engage in such energetic behavior. In fact, Ostroms student Robert Bakker was the first paleontologist to forcefully propose that all theropod dinosaurs were warm-blooded, a theory thats currently on only slightly shakier ground than the dinosaur-bird connection. ​By the way, he wasnt responsible for either discovering or naming this dinosaur, but the type species of Utahraptor (U. ostrommaysorum) was named after John Ostrom and Chris Mays, a pioneer in animatronic dinosaurs.

Composite Cycle Frame Manufacturing Methods Project Assignment

Composite Cycle Frame Manufacturing Methods Project - Assignment Example The second method is the closed mould which uses a bag and foam core. This method is commonly used to manufacture frames and monocoque frames. This paper analyses the process of manufacturing bicycles using the carbon fibre in two parts. This includes the time that carbon fibre takes to corrode during the process. This part looks at the process of manufacturing a bicycle using the methods available under the use of composite. The second part is the options available for corrosion resistance for the components used in the method. It is important to protect frames of these bicycles against corrosion which constitutes much of damages caused con them. Carbon fiber, which is also known as graphite fiber or even carbon graphite, is a material that is composed of fibers nearly a diameter of 5–10Â  ÃŽ ¼m and mainly consists of carbon atoms. They are joined in crystals that align themselves parallel to the fiber’s long axis. The alignment of the crystals provides the fiber with high strength to volume ratio, this renders it strong for its size. Many carbon fibers are brought together or joined to make a tow; this can be used by itself or even make a fabric (Campbell, 2003, p.36). The carbon fibers’ characteristics, like high solidity, low density, high tensile strength, high tolerance to temperature, high chemical opposition, and low thermal expansion greatly makes them to be largely used in military, aerospace, motorsports as well as civil engineering, also in some other competition sports. The carbon fibers are slightly expensive in comparison with some other fibers like plastic fibers and glass fibers. They are normally mixed with some other materials to come up with a composite. When they are mixed with a plastic resin and then molded, we find that the result is carbon fiber reinforced plastic; this is commonly known as carbon fiber and has a strength-to-weight ratio that is very high, which is very rigid even though

Article Aalysis Coursework Example | Topics and Well Written Essays - 750 words

Article Aalysis - Coursework Example In seeking to understand the article which was selected for this brief analysis, US fuel prices take a slight dip†, the reader sees very clear and inherent understandings of the way in which fuel prices within the United States, and elsewhere throughout the world for that matter, are not directly linked to the ability of the environment to produce this resource and/or the overall expectation of the diminished resource in general. Rather, the price of fuel/oil is ultimately tied to the expectation of stability in the world . Moreover, unity and stability within a particular region that is somewhat close or geographically important to a trade route can send oil prices skyrocketing. As such, it is easy to understand why the past several months have seen a market spiked with regards to the price of oil worldwide. ... Such a judgment is made with respect to the fact that without major alterations with regards the way in which the global economy interacts, individuals are not able to alter their consumption of oil without widespread and far-reaching repercussions being felt within their own personal life and within the broader economic sense of their respective regions. In seeking to fulfill a further requirement of this brief analysis, the instructions indicated that the student was responsible for describing what is occurred to the change in supply of the particular product. In short, nothing has changed. Rather, fear within the futures market has driven up price and caused investors to panic with regards to what may be the case within the next few months/years. Yet, it is unfair to say that changes in supply do not occur within the oil market. Hardly a week passes without an article being written, or a newsworthy item being referenced that considers the way in which the oil-producing nations of the world (OPEC) have either increased or reduced supply as a means of deriving up or driving down prices of oil (Piazza, 2013). Much as they have within the past, Saudi Arabia has been responsive to the increased price of oil throughout the world and has increase the output from their wells so that the price of the substance in question could be nominally reduced. However, all that being said, it is painfully obvious that the ultimate reason for why fuel prices have begun to drop does not have to do with the increased output of one single oil-producing nation; rather, it has to do with the fact that the United States, the Russian Federation, and Syria have all agreed on a tentative resolution through which a United States backed

Final exam Assignment Example | Topics and Well Written Essays - 750 words - 6

Final exam - Assignment Example The people in power do not have to be favored by the laws in the community, but the laws should support all. A community that practices justice and instills knowledge to its citizens will prosper, unlike a community, which does not. Knowledge is the key to good and outstanding leadership because knowledge carries with it all the right virtues. Protagoras is very communitarian and anti-individual. He argues in the case of justice that to live together we must act politically, respect others, realize our compulsion to others and act justly. The harmony of all this things will only be achieved by education. Political and social skills need to be taught to uphold justice and ethics. If a city decides an issue to be just and okay, then the facts are just and fine for it, so long as it reserves the opinions. Cicero in his time focused mostly on defending the Roman Republic. Democracy is seen in a community when justice is agreed upon jointly. Protagoras responds by giving a lengthy speech about the creation of the world. He states that indeed virtue is teachable since political systems believe that all citizens can have virtue. Likewise, criminal justice systems are based on the view that citizens can be reformed or taught to be virtuous. It is hard to be good, but it is also impossible to be good all the time. This is because human beings are forced to behave badly by some circumstances in life. This situation implies to ignorance as shown by Protagoras. He states that the only evil is a lack of knowledge and behave badly while knowing what is good. Protagoras has accepted that wisdom, restraint, justice, courage and sanctity all mean virtue and morality are other names for knowledge. This means that virtue can be taught. Platos’ philosophical ideas about justice were intelligible, static matter, accessible to the mind and not to the senses. His ideas provide the lone dependable standard for knowledge and good judgment. A person