tegile iops

azure virtual machine environment, deploying data in an azure blob is easier to migrate, simply separating the database and attaching it to another azure virtual machine without moving the database file itself. Database Virtualization : In a cloud environment that provides services to tenants, you can combine the database features after SQL Server 2012 to smooth the databases on the higher-load virtual machines to other virtual machines without affecting the normal operation of the virtual mac

Desktop virtualization planning is like building a house, and resources are like the material of a house, how Distribution is also a problem, a little careless, the house will collapse. How can I hold this House? Please see This paper. The goal of resource allocation is to have access to adequate resources at peak times. This experience is critical for users moving from a traditional desktop to a virtual desktop. This article mainly discusses the CPU and memory allocation. 1. CPU Allocatio

VMware, on the official blog today, said the use of PVSCSI storage adapter driver can improve 10-30% performance for high IO VMs. See Http://blogs.vmware.com/performance/2010/02/highperformance-pvsci-storage-adapter-can-reduce-cpio-by-1030.html We know that the default type of SCSI controller when creating VMS is the LSI Logic. Now under vsphere 4, you can select a new type PVSCSI (the option is VMware paravirtual), and this type can significantly reduce CPU workload. A further study of PVSC

disk response time, the disk queueThe discovery was surprisingly high.SuggestionsThe problem appears to be caused by the disk itself. Here are some suggestions for solutions:1. Replace the disk with faster read and write speed2. Current data files and log files on the same physical disk, separated3. Proceed from the business. After communicating with the customer, it is found that this table is the Operation log table. Logs are logged each time a business operation is made. So special big.corre

There are four types of IO: continuous read, random read, random write and continuous write, the IO size of continuous reading and writing is usually larger (128KB-1MB), the main measure of throughput, and random read and write IO size is smaller (less than 8KB), mainly measure IOPS and response time. The full table scan in the database is sequential read IO, the index access is the typical random read Io, the log file is the sequential write Io, and

the lowest performance state when the processor is idle, it is recommended to turn off (enabled by default)C States (c State), allows you to enable or disable the processor to operate in all available power states, recommended off (enabled by default) CPU priority selection of high frequency (computing power), followed by the choice of more than the number of cores (can be multi-threaded concurrent processing, using multi-instance).Note: since MySQL is a single process, multi-threaded working m

frequency and must be tuned to max performance.There is also a CAE processor at the BIOS level, and when it is idle, we can disable the processor so that it is in the lowest state.about TPS High, high businessWith regard to the high TPS and high business conditions, it is important to configure the array cards, so be sure to configure the cache module and the Bbu module. The BBU module is used to provide my backup power, and when the machine is powered down, my BBU module can go as a power sour

1, the fill test data is larger than the physical memory, at least more than the Innodb_buffer_pool_size value, you can not load all the data into memory, unless you want to test the full memory state of MySQL performance.2. After each round of testing, restart the Mysqld instance and delete the system cache with the following method, releasing swap (if Swap is used), or even restarting the entire OS.[[Email protected]]# Sync--Flush dirty data to disk[[Email protected]]# echo 3 >/proc/sys/vm/dro

second (IOPS), in order to try to sort and merge multiple requests to achieve a single seek to meet the purpose of multiple IO requests, The Linux file system designs a variety of IO scheduling strategies that have been applied to various scenarios and storage devices.The IO scheduling strategy for Linux includes:Deadline scheduler,anticipatory scheduler,completely Fair Queuing (CFQ), NOOPCFQ is the default scheduling policy after the Linux kernel 2.

= "Wkiom1vtpfmcety9aadbdizbn9a400.jpg"/>#参数-P is the number of CPUs displayed, all for all, or only the first few CPUs650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M00/6D/D5/ Wkiol1vtppayb7weaalqhx41buc367.jpg "title=" 3.png "alt=" Wkiol1vtppayb7weaalqhx41buc367.jpg "/>#查看I/O Performance650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6D/D9/wKiom1VtPSXTsI4zAAMkfVf2r-I743.jpg "title=" 1.png " alt= "Wkiom1vtpsxtsi4zaamkfvf2r-i743.jpg"/>#参数-M is displayed in m units, the default

ioPSBlkio.throttle.write_iops_device Write ioPS253:3 is the number of the deviceFor example, we want to limit the IOPS of the process on Flashcache.[Email protected] ~]# ls-l/dev/mapper/cachedevlrwxrwxrwx 1 root root 7 Jan 21:16/dev/mapper/cachedev. /dm-3Here to see just a soft connection, we went on to find[Email protected]~]# ls-l/dev/dm-3BRW-RW----1 root disk 253, 3 Jan 21:16/dev/dm-3So we limit the iops