how to defrag ssd

Simple Optimization of SSD hard drive on Ubuntu 1. Set the correct mounting option and enable TRIM. After Linux is installed, this is very important. To maintain long-term stability and speed, SSD needs to enable TRIM, which enables SSD to truly erase the materials marked on the chip during non-peak read/write times. This example is based on the ext4 system. For

Use the DD command in Linux to test the read/write speed of USB and SSD hard disks.Disk Drive Speed The disk drive speed is measured by the amount of read/write data per unit of time. The DD command is a simple command line tool that can read and write any data block on the disk and measure the read/write speed. In this article, we will use the DD command to test the reading and writing speed of USB and SSD

　　Key points for using SSD SSD usage basically does not need to optimize, only the following several places need to note: 1, on the AMD series of Chip motherboards, Intel's SSD performance may be reduced, so you can choose the third party company's products. 2, the Win7 system will be shut off can save a large part of the hard disk space. 3, virtual memory, 4

For more information about how to use an ssd hard drive to accelerate mysqlindex, see www.javaarch.netjiago ushiindex.htm? If the data volume is large and the ssd capacity is not large, you can save the index data to the ssd to store the table data on the old hard disk .? So how can we make mysql build index on ssd and

No solid-state drive, fast CPU, and then a powerful graphics card, are useless, because of the "barrel principle", the bottleneck is here ah. Today's SSD prices have fallen a lot, I remember last year I bought a 120G SSD is nearly 600 yuan, and now only need less than 400. The way I introduced the SSD and transfer system is simple (and very safe), but still need

One problem for users who want to equip their old Mac with a third-party SSD (SSD) is that the OS X system does not turn on TRIM support for Third-party SSDs. TRIM is a system-level command that allows the operating system to communicate with solid-state drives to determine which of the SSD is pleasing and not used, and is ready for erasure and replication. If th

http://blog.csdn.net/killmice/article/details/42745937 The test tool FIO is read sequentially as an example, with the following commands: fio-name IOPS-RW = Read-bs = 4k-runtime = 60-iodepth 32-filename/dev/sda6-ioengin E Libaio-direct = 1 where rw = read for random reads, BS = 4k for each read 4k, filename specifies the corresponding partition, here I am/dev/sda6, direct = 1 means the cache through Linux Test SATA Hard Drive, SAS hard drive, SSD har

Recently has been engaged in the object detection play, before using the FASTER-RCNN, the accuracy of 73.2%, the effect is good, but the recognition speed is a bit short, I use the GPU is gtx980ti, recognition speed is about 15fps. Recently discovered SSD ( Single shot Multibox detector) This paper has a good effect and speed, I have experimented with it, the speed is indeed much faster than FASTER-RCNN. The following is a two-part introduction. The f

MyISAM tables [1000000]--mysql-create-options=string additional options passed to create TABLE [] Sysbench test on SSD first:The MY.CNF configuration is as follows:[Client]Port= 3306Socket=/ssd/mysql5.5/mysql.sock[mysqld]Port= 3306Socket=/ssd/mysql5.5/mysql.sockdatadir=/ssd/mysql5.5/databack_log= 50Character-set-files

I talked to users and vendors about how SSD (solid state drive) is used, I found that most people think that server SSDS must be ultra-high-performance SLC (single-layer unit) PCIe flash cards manufactured by manufacturers such as Fusion-IO, micron, Virident, or LSI. Although most people know that the mainstream SAS or SATA interface SSD is in the 2.5 inch format, they seem to think that these devices are o

1. BackgroundWhen doing a vsan experiment, you need at least one SSD disk as the read/write cache. If there is no SSD disk, we need to mark the normal HDD disk as SSD. Parameters need to be modified.2. StepsThe first step: Find the ID of the disk that needs to be modified to SSD: Red is the ID of the disk as follows[Em

from:73439202Problem Introduction:At present, the common target detection algorithm, such as faster R-CNN, has the disadvantage of slow speed. The SSD method proposed in this paper not only improves the speed, but also improves the accuracy.SSD:The core idea of this paper:The main contribution of this paper:1. The SSD target detection method is proposed, which is faster than the fastest YOLO in speed, and c

Unable to endure the speed of the home mechanical hard drive, the characteristics of a solid-state hard drive to taste fresh. Because the home computer is older, SATA interface is still 2.0, so I simply bought a piece of low-end SSD, Shadow Armor War 240G (the key is the price is cheap enough). 1, to play the largest SSD performance, the computer should pay attention to the following points:

August 27 News, Overclocking, is to let the hardware run on the default frequency setting, CPU overclocking, memory overclocking and display Casupines has been around for a long time, so you hear overclocking first think of these three hardware, but Intel's new technology is said to be likely to break the situation, the next time, The SSD can also be overclocking! Intel will have two IDF meetings a year, the second half of this will be held in San Fra

FASTER-RCNN trained his own data set, feeling the effect is OK, for their own data set accuracy rate of about 89%, but faster-rcnn speed is a pit. So, start thinking about using SSDs to try. Since the FASTER-RCNN dataset is already available, the steps for making all datasets can be omitted. The next step is the modification of SSD training. Here, set the SSD root directory to CAFFE-

SSD hard disk capacity is not enough to do? Tools/raw Materials SSD Setup Tool Method/Step 1, open the local SSD hard disk manufacturer's exclusive setting tool, upgrade to the latest version, small part of the hard drive is magician, as an example, processing ideas are the same, pay attention to each manufacturer's tools are different. On Disk Dirve homep

Conclusion 1:SSD card significantly improves the disk Io,io occupancy under 50% 2:SSD card makes MongoDB performance stable.In the case of 200 concurrency, the data volume is 5 times times the amount of memory and still guaranteed 1500 insertions per second and 4,500 queries. The data is as follows: 1: IO completion per second "All in memory" when there is an SSD

After replacing the SSD under Mac Pro, it is cumbersome to change the SSD to AHCI mode if Win7 is installed. This article describes how to change the SSD in Mac Win7 to AHCI mode driver and the processing of several common problems.How to change the SSD drive mode of Win7 to AHCI when Lion and Win7 dual system coexist1

In fact, the frozen phenomenon of solid-state hard disk is not concentrated on the SSD, but the whole problem related to the hard disk, many users think that the crash itself is the problem of solid-state hard disk, we in today's article also together to analyze what is the problem of the system crash. SSD freezes cotton How to do solid state hard disk use detailed Let's take a look at the crash prob

4K corresponds to 4096HDD Mode:First, let the SSD run in AHCI mode:AHCI, the full name Advanced host controller Interface, which is the high-level hosting controllers interface, is more suitable for SSD SATA storage device communication protocols than the older "IDE" virtual mode. In AHCI and IDE mode, the SSD's performance gap percentage is around 65%. Therefore, it is recommended that