zfs ssd

The SSD (Solid state disk or Solid Drive) is also known as a solid-state drive, a new generation of hard disk products that use flash pellets as storage components. SSD hard disk has the characteristics of high speed and security, but it is hindered by its wide application because of its expensive and limited capacity. However, with the continuous downward flash product prices,

: This article mainly introduces how to install lubuntuubuntu to optimize tmpfs, which causes startup failure of apache2nginx. if you are interested in PHP tutorials, please refer to it. When SSD is optimized,/var/log is placed in the ramdisk of tmpfs. restart causes the apache2 and nginx directories in/var/log to be lost, and apache2/nginx cannot be started. Solution: in ~ /. Create these two directories in ~ /. Add at the end of bashrc. (Oh, use

The biggest difference between SSD and HDD is that it does not have the necessary mechanical parts of the HDD, the disc, the head rocker arm, which is determined by the different working principle of two kinds of hard drives. SSDs save time in mechanical parts movement compared to HDDs, and the primary storage element NAND flash used by SSDs is an electronic component, so its data travels much faster than HDD.In addition, according to the test, the HD

://github.com/kingliantop/azurelabs/tree/master/AzureChinaARMTemplate/VM-multiple-datadisks-SSDWhen creating an arm template, if you want to pass in parameters to decide how many virtual machines to create, you need to be aware of the various mutually exclusive resources, such as NICs, such as IP addresses, because once these resources are assigned to the first virtual machine, they cannot be assigned to the second virtual machine, or they will get an error:For scripts that automate the creation

1. SizeThe M.2 standard allows modules with widths of 12, 16, 22 and MM, lengths of 16, 26, 30, 38, 42, 60, 80, and MM. Commercially available m.2 modules are available in sizes of 30, 42, 60, 80 and MM respectively.eg:2242 22mm Width 42mm length2260 22mm Width 60mm length2280 22mm width 80mm long common　　　　2. Interface　　The typical m.2 SSD interface has b key,m key or Bm key.　　3. Motherboard Slots(1) Socket2 corresponding to B key(2) Socket3 correspo

The company's ERP system has a large amount of data, with 40 GB of data and 90 + concurrent users and 1000 + connections. The original IO performance cannot meet users' operation response requirements, and report query is slow, all the indexes have been done, and the index is re-built once a week, but the problem still cannot be solved. To this end, the company purchased the dell poweredge R720xd server, which supports two arrays and 24 hard disks, dual-CPU, 64 GB memory, more awesome. We have c

"""Some Special Pupropse layers for SSD."""ImportKeras.backend as K fromKeras.engine.topologyImportInputspec fromKeras.engine.topologyImportLayerImportNumPy as NPImportTensorFlow as TFclassNormalize (Layer):"""normalization layer as described in parsenet paper. # Arguments Scale:default feature scale. # Input shape 4D tensor with shape: ' (samples, channels, rows, cols) ' If dim_ordering= ' th ' or 4D tens or with shape: ' (samples, rows, cols,

How to adjust the boot sequence of SSD after installing solid state hard disk in computer 1, after the computer restart, point del into the motherboard interface, go to boot, you can see the start of the sequence of display; 2, the problem is not seen in the startup preferences of solid-state drives, and then enter hard disk Drive BBS priorities; 3, in the choice of the inside can see solid state hard drive and mechanical hard dri

To the introduction of solid-state drives, compared to the old mechanical hard drive, SSD solid state hard disk is said to be the same as the rocket speed, the installation of solid state hard drive after the Win7 system, whether the boot or operation has a quality upgrade, but many friends may not know, the use of solid-state drives there are some need to know the optimization methods, Allows your solid-state drives to perform optimally in Win7 syste

Because of work, sometimes two computers are needed to work, and most people engaged in development are those pursuing computer performance, so the laptop is naturally not light, not to mention the two. I have been suffering from two computers for more than half a year, and finally made up my mind to install a system into a mobile SSD, carrying a non-hard drive computer and adding two mobile SSDS to reduce the burden. After one day's exploration, many

Linux SSD optimization policy 1. do not use a file system with logs. If you have the ability, consider a file system that supports ssd, such as ubifs. If not, use ext2 www.2cto.com 2. disable noatime nodiratime of the file system, because the access time will increase ssd write, there is no need to modify/etc/fstab, for example, change/dev/hda9/data ext2 defaults

SSD Performance testSequential Write 16k ioPS 85061.08Sequential Write 8k ioPS 146250.93Sequential Write 4k ioPS 239816.69Sequential write 2k ioPS 294540.87Sequential Write 1k ioPS 347170.06Random Write 16k ioPS 21865.24Random Write 8k ioPS 26602.18Random Write 4k ioPS 34485.49Random write 2k ioPS 35115.20Random Write 1k ioPS 34913.40Sequential Read 16k ioPS 157199.17Sequential Read 8k ioPS 239133.22Sequential Read 4k ioPS 361864.16Sequential read 2k

Requirements: To match the left and right views, and then output the two disparity map (parallax map)e.g.Left view, right view (two images are the same size, only the perspective transform in the horizontal direction)The standard parallax map is as follows:　　SSD (sum of squared differences) implementations:　　　　　　1. Turn left and right view into CV_8UC1 single channel imageCan directly refer to the API implementation of OPENCV, write a three-channel av

+= + glog gflags protobuf boost_system boost_filesystem m HDF5_SERIAL_HL hdf5_serial　　"FIX: No get_image_size tool, hint get_image_size not found"　　 that's because you're using the original caffe and need to switch to the CAFFE-SSD branch :Method One:git clone https://github.com/weiliu89/caffe.gitcd caffe/git checkout SSD # Switch to branch SSDMethod Two:Download GitHub's Zip package directly: https://GITH

Considering many algorithms including YOLO SSD, this series of onestage methods can not solve the problem of small target detection, after thinking that the problem is different from the feature map and the big target of small target.A paper solves this problem, that is, the RSSD algorithm R is the meaning of the rainbow means that multiple feature maps are fused as a classification standard.Paper: Enhancement of