how to defrag ssd

In the relational database area, PostgreSQL is a very popular open source database software. Since its release in 1996, it has accumulated nearly 20 years of practical experience, both in PostgreSQL itself and in community ecology. Not only small and medium-sized enterprises, many large industry customers will also use PostgreSQL to build their own database system. This article focuses on PostgreSQL and compares the SAS disks in the PCIe SSD (this art

Years later, the use of their spare time and intermittent will caffe SSD source read, although the middle due to work for a period of time, but finally completed successfully, SSD source reading is also this year's annual plan of the more important one of the content, completed or very fulfilling. after reading the code, one of the biggest experience is that before the paper a lot of confused my details now

Focus on SSDs has been around for some time, the previous few years SSD capacity is small, more importantly, its limited life and expensive prices so that SSD can only be used as a storage area of the accelerated media exist, if anyone who want to use SSD as a disk array, the system is a bit too crazy. As a result, in previous years, both academia and industry ha

files are in use. DiskSim is initially separated from a large, system-level simulator, so it can be easily transplanted to the entire system simulator (such as porting to SimOS ). What DiskSim Does Not Do?DiskSim only simulates and reports storage subsystem performance-related aspects. It does not simulate the behavior of other computer system components, or the interaction between components and the storage system. DiskSim simulates the performance of the hard disk system, but does not save th

in sequential read and write performance, sequential reading can reach the 82.4mb/s, basic and mechanical hard disk performance level, the random read and write performance slightly improved, not very obvious. Considering the high requirements of TC for Random Read and write performance, the USB drive with 3.0 interface is still difficult to meet the performance requirements.2.3 Test Result AnalysisCombined with the above test results, slow write speed is the main performance bottleneck of the

With the price of SSD solid-state hard drives down, later assembled computers to use SSD solid-state hard drive will become mainstream, at present, SSD solid-state hard disk capacity is small, and the price than mechanical hard drive to have no advantage, compared to ordinary mechanical hard drive, the gap between the big price. Believe that the

SSD solid-state drives know that if the SSD partitions do not have 4K alignment, the performance will be a discount. But maybe someone with the same encounter this situation, clearly zoning when the choice of 4K alignment, but after the system with as SSD benchmark this tool after detection is extremely depressed, why C disk will show not 4K alignment? Fortunate

Configuration environment: WINDOWS-CAFFE-SSD + Windows7 X64 + VS2013 + matlab213a + Anconda2(CAFFE-SSD Microsoft's official Source code: Link: http://pan.baidu.com/s/1c12xAgw password: Vurt. NuGet will automatically configure the required libraries for CAFFE-SSD)Installed on the CPU, so there is no need to install Cuda and CUDNN. 1 do not download 3rdparty. 3rd p

This article from http://ssd.zol.com.cn/575/5753057.htmlIn the use of SSD, some users may encounter the computer accidentally power down or crash and forced power outage, the system is abnormal, scan the SSD and found a bad block, and then a hurry to stomp even want to return to the factory repair.In fact, the solid state drive after the bad block is not a serious problem, the following the author of this q

Latency of next-generation SSD controller based on low-density Inspection Author: Stephen BatesLatency Variability In the previous blog, I talked about how the Error Correction Code (ECCS) in the enterprise-level SSD controller is being converted to Low-Density Parity Check (Low-Density Parity Check. This article also implies that this conversion will have a profound impact on the latency in the next-genera

compatibility with Sata hard disks. SAS interface technology is backward compatible with Sata. In terms of interface standards, Sata is a sub-standard of SAS. Therefore, SAS controllers can directly control SATA hard disks, but SAS cannot be directly used in Sata environments, because the SATA controller cannot control the SAS Hard Disk SSD SSD is a technology that discards traditional magnetic me