1. install hdparmyuminstallhdparm-y. 2. use the hdparm command to read the SSD hard disk. Hdparm-t/dev/xvdaSSH: run the preceding command to evaluate the read speed of SSD. NOTE: ldquo;/dev/xvda rdquo; indicates the drive number of the corresponding disk. run ldqu 1 to install hdparm.
yum install hdparm -y
II. read evaluation
SSD hard drive. use the hdparm c
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
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
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
compared with the desktop, we have a relatively low demand for notebook performance, so in the process of upgrading the notebook hard drive is the pursuit of performance or large capacity, or both? Small series will come up with three solutions to discuss with you.
For the different needs of the user groups, we will be the notebook upgrade program roughly summed up in the following three kinds:
1, mechanical hard disk replacement of large-capacity SSD
This article is for reading book next Generation Databases:nosql, Newsql, and Big Data Chapter 7th: The End of Disk? SSD and In-memory databases notes.The disk is dead?Bill Gates said in 1981:
640K of memory should is enough for anybody.
In 2001, he realized that the previous statement was wrong:
I ' ve said some stupid things and some wrong things, but not that.
Since the birth of the first database, database experts have
In Linux, check whether it is a solid state drive (SSD). Recently, we are preparing to test it. We need to check which machines are attached with an ssd hard drive. Google has seen many methods, but they are all in the dark, I don't know how to determine. Ssd disks seem to use scsi interfaces, so they cannot be determined based on the drive letter name. At last,
No research on SSDs, colleagues suggest that Apple on the unofficial SSD does not open trim, the Internet is a, to trim unknown.First, Trim is going on: http://bbs.feng.com/read-htm-tid-1870887.htmlSecond, open the unofficial SSD trim:http://bbs.feng.com/read-htm-tid-8997023.htmlIts method is very simple, according to gourd painting scoop can.sudo nvram boot-args="kext-dev-mode=1"Restart sudo cp/system/libr
Although Samsung introduced the fix last October, it was reported last month that some of the Samsung 840 EVO SSDs face the problem of reading off the old data after it has been brushed into the new firmware. In view of this, Samsung issued the following statement in the afternoon of Friday: "In October, Samsung launched a 840 EVO SSD firmware tool that only fixes old data read-off, but a small percentage of users said they would encounter the same pr
With the popularity of SSD drive, its superior IO performance has been replaced by more and more traditional SATA and SAS disk, there are three kinds of common application scenarios: 1) Replace the hard disk of MySQL database, the community does not have the MySQL version optimized for SSD, even so, Direct upgrade of SSD drives can also bring about 8 times times
Recently, I bought two SSD hard disks and mounted them to the database. I put the virtual memory and temp tablespace and a controlfile on them. I hope to improve the efficiency of the database by taking advantage of the fast I/O feature of the SSD hard disk. after two weeks of running in the test environment, I moved to the formal environment. At noon today (3rd days), I received a call from my colleagues w
When a traditional outward scaling method becomes popular for MySQL, let's see what we have to expand (cheap memory? Quick storage? Better power supply efficiency ?) It will become very interesting. There are indeed many options here-I may encounter a customer using the Fushion-IO card every week. However, I saw an interesting option for them-they chose to buy an SSD and they could still read many pages per second (at this time, I would rather choose
When we run the SSD TensorFlow version, the following issues occur, and the command I run is:
dataset_dir=voc2012/
output_dir=tfrecords
python tf_convert_data.py \
--dataset_name=pascalvoc \
--dataset_dir=${dataset_dir} \
--output_name=voc_2012_train \
--output_dir=${output_dir}
Through Baidu is not found GitHub above the issues above the answer, I am here to solve the problem to write out, hoping to help you play
Tags: SAS XFS SSDAn OLTP performance comparison test was previously done: SAS vs SSD various modes MySQL TPCC OLTP comparison test results, this time to do the OLAP comparison test.The comparison test results are shown below:650) this.width=650; "Src=" http://dp.imysql.com:8080/files/upload_yejr_imysql/SAS_VS_SSD_MySQL_OLAP_benchmarking _20121225.jpg "style=" border:0px; "alt=" sas_vs_ssd_mysql_olap_benchmarking_20121 "/>The corresponding performance
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
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
I. first, review the read and write features of SSD (1) Limited write times; (2) best random read performance; (3) Good sequential read performance; (4) Poor sequential write performance; (5) the random write performance is the worst. In terms of storage, different content of SQLServer has its own unique personality. The following lists TempDB, Data, indexes, and transaction logs respectively.
I. first, review the read and write features of
A framework for SSD target detection –2017.3
References: official website: HTTPS://GITHUB.COM/WEILIU89/CAFFE/TREE/SSD Blog: http://blog.csdn.net/wizardna521/article/details/53463348 Introduction to SSDs
SSD is Dr. Weiliu's deep learning framework for real-time target detection based on Caffe. Compared with the faster rcnn, the speed of the target detection has b
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