Memory utilization issues 401 429 consider the memory

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Memory Utilization Issues 4:01-4:29
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Consider the memory counter shown here. Almost all of the physical memory has been consumedand the paging file is being heavily utilized. This is indicated by the excessive number of page faults that are occurring. In this situation it's likely that disk thrashing will occur. The CPU is spending most of its time moving data in and out of the paging file instead of doing useful work. When this happens, the hard disk light stays lit most of the time and the processes running on the system appear to be hung. Hard Disk Utilization Counters 4:30-4:53 The last counter we will address in this lesson is hard disk utilization. An overutilized hard disk will result in poor system performance. There are two counters you need to be familiar with: The disk counter measures the amount of data transferred to and from the disk in megabytes persecond. The disk queue length counter measures the average number of read and write requests that were queued for the disk during a specific time interval. Hard Disk Overutilization 4:54-5:17 Disk utilization should remain low most of the time with occasional spikes as various system events occur. For example, it's acceptable for a disk utilization spike to occur when you launch an application. However, if the utilization remains consistently high, then the overall performance of the system will suffer. In the example shown here, the disk and disk queue length counters are consistently too high. Hard Disk Utilization Issues 5:18-6:02 To resolve memory overutilization, you should unload unnecessary applications and services.Running too many processes can result in hard disk overutilization. Likewise, running a RAM intensive application can also result in memory overutilization. Running an I/O intensive application can also result in hard disk overutilization. You should look for memory leaks. Memory leaks occur when memory addresses are allocated to a running process, but that process fails to release those memory addresses when it's done usingthem. You can also add additional memory to the system. Hard disk overutilization can be caused by a system that doesn't have enough RAM installed to support the applications and services running on the processor. Summary 6:03-6:16 In this lesson, we discussed monitoring system performance. We discussed several tools you can useto monitor a Windows system. We also reviewed several key counters you should monitor to prevent overutilization of the CPU, the system RAM, and the system storage devices. Monitoring System Performance 0:00-0:34 In this demonstration, we're going to talk about monitoring system performance, and we're going to look at several tools on Windows that you can use to accomplish this. Now it's very important that you monitor system performance. What you should do is start monitoring immediately after a system is initially set up. This creates a baseline that you can use, to compare against later on after the system has been in use for a while, has more hardware devices attached to it, and has different applications installed on it, and so on. And that can help you troubleshoot problems that may
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  • Spring '14
  • Task Manager, Hard disk drive

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