tegile iops

also a parameter that is memory 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 business With 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,

query aborts and exits when it encounters a corrupted data structure. innodb_io_capacity= The upper limit of I/O operations that can be performed #设定InnoDB后台任务, such as swiping a page from a buffer pool or merging data in a modified buffer. The minimum value is 100, the default value is 200, and the maximum value depends on the CPU architecture. For servers with large I/O loads, you should specify a larger value for them to perform background maintenance tasks better and faster. In practice, ho

Balancing CPU and I/O throughput are essential to achieve good overall performance and to maximize hardware utilization.SQL Server includes asynchronous I/O mechanisms-sequential read ahead and random Prefetching-that is designed to Address this challenge.To understand why asynchronous I/O is a important, consider the CPU to I/O performance gap. The memory subsystem on a modern CPU can deliver data sequentially at roughly 5 gbytes per second per socket (or for non-n UMA machines for all sockets

Oracle ORION: Storage System Performance Testing Tool (I) defines ORION (Oracle I/O Calibration Tool) as an Oracle Tool for testing storage system performance bottlenecks because ORION is an independent Tool, it is very easy for users to create and run Oracle Database ORION. You can simply decompress the downloaded package from the official website. http://www.oracle.com/technetwork/cn/topics/index-088165-zhs.html Decompress: # gunzip orion_linux_x86.gz (advantage) ● you do not need to run Load

is also called the Parallel ATA interface, that is, the Parallel ATA interface. Hard Disks with this interface were widely used in previous PCs. (2) SATA interfaceSATA (Serial ATA) interface, Serial ATA interface, this type of hard disk, the speed is usually not high, the capacity is large, the current PC or IOPS requirements are not too high storage use this interface hard disk. (3) IDE and SATA Hard Drive Interface icons 2.2 SCSI interface pr

DM-ioband is not integrated in mainstream kernel and must be patched for use. Besides, it must be the source code of the kernel community, if I patch the kernel with a red hat, an error is reported... Http://sourceforge.net/apps/trac/ioband/wiki/dm-ioband After the patch is downloaded, mark it and make menuconfig. Then, check the ioband module under LVM/raid/devicemapper, re-compile and install the kernel, and restart lsmod | grep ioband, if you can see ioband, it indicates that the installation

://tw.archive.ubuntu.com/ubuntu/pool/main/s/sysstat/sysstat_9.0.3-2ubuntu1_amd64.debTargz packageHttp://pagesperso-orange.fr/sebastien.godard/sysstat-9.1.1.tar.gz2) SAR commandsThe SAR Command reports CPU usage, I/O, and other system behaviors. SAR commands can collect, report, and save system behavior information. The data collected in this way is useful for determining the time cycle characteristics of the system and determining the peak usage time. However, when running the sar command, a con

1. The database lifecycle can be roughly divided into several stages based on the software lifecycle and project development. 1. After the project is established, the software and hardware selection and general database architecture of the database platform are planned. 1.1 configure the number of servers, memory size of the server, disk space, IOPSCPU core network bandwidth, etc.; 1.2 1. The database lifecycle can be roughly divided into several stages based on the software lifecycle and projec

Disk Performance test MethodsHttps://help.aliyun.com/document_detail/25382.htmlTest for random Write IOPS: Fio-direct=1-iodepth=128-rw=randwrite-ioengine=libaio-bs=4k-size=10g-numjobs=1-runtime=1000-group_reporting- Name=/path/testfile Test Random Read ioPS: Fio-direct=1-iodepth=128-rw=randread-ioengine=libaio-bs=4k-size=10g-numjobs=1-runtime=1000-group_reporting- Name=/path/testfile Test Wr

For special applications such as databases, iops often becomes a bottleneck. There are not many effective methods to break through this bottleneck. The main software aspects are read/write splitting, vertical splitting, partition table technology, and cluster. The hardware is mainly raid and SSD. Usually software and hardware are optimized at the same time. Compared with the test, the hardware uses raid more often. Today, we will share the hardware ra

abstract about how to use Orion. Note that Oracle does not support Orion. Advantages: 1. Do not need to run Load Runner and configure a large number of clinet 2. You do not need to run the Oracle database or prepare a large amount of test data. 3. The test results are more representative. For example, in random I/O testing, the software can make the storage hit rate close to 0, and simulate the real iops of the disk, however, it is difficult for the

card or MB ). Let's take a look at what the NIC is and what services it is processing. Execute netstat-in on the command line to view the IP address of the corresponding en * interface, and check whether the traffic is high with the NIC or the production service Nic through the IP address. Then, use netstat-v en * to check the network adapter's detailed working status, including the number of error packets, conflicting packets, CRC check errors, or network reset errors. For details about the ab

betterComparison of single disk capacity: SAS (300 IOPS)> SSD (35000 IOPS)Performance: SSD> SAS> SATA Disk Array Performance: RAID0> RAID10 (recommended)> RAID5 (rarely used)> RAID1Note:Select raid10 as the master database, and select raid0/raid5/raid10 as the slave database. The slave database configuration is equal to or greater than the master database. Nic At least 1 Gbit/s Nic

Analysis on raid Let's analyze the main components that affect computer performance, including CPU, bus I/O of the motherboard, memory I/O, hard disk I/O, and Nic I/O. Now the CPU performance is good, however, the overall I/O performance of the computer is low, seriously affecting the computer performance. The current computer's bus I/O and memory I/O speed can reach more than 5G/s, however, disk IO is usually low. Let's analyze several common methods. For SATA hard disks, the speed is less than

follows:Column 01st: master device number majorColumn 02nd: Sub-device number minorColumn 03rd: Device nameColumn 04th: Total number of Read Request completions rio05th columns: Total number of read merge requests rmergeColumn 06th: Total number of read sectors rsect07th columns: the time consumed for reading data, rticks, in ms08th columns: Total write request Completion wio09th columns: Total number of write merge requests wmerge10th columns: Total number of write sectors wsect11th columns: D

the IOPS of a 10 k SAS disk is only 120 to 150, the IOPS of SSD hard disks is even more than 10 times. Therefore, it is worth trying this combination for systems with high I/O performance and concurrency requirements. For example, assume that the current size of a customer database is 1 TB, the data increment is 100 GB per month, and the concurrency is more than 1000. You can use the following two methods:

cut the graph. 5. Compact loose. ArcGIS10 introduces a new cache format, which saves original independent cached images as bundle binary files. each bundle File Stores 128*128 cached images. Compared with thousands of tile files, this method is easier to manage cache, reduce disk space usage, and improve cache Read efficiency. Therefore, we should also use a compact format to create Slices During graph cutting. 6. image format. Different image formats directly affect the size of cached files.

Large MBPS = 2079.73 @ Small = 0 and Large = 9Maximum Small IOPS = 54426 @ Small = 44 and Large = 0Small Read Latency: avg = 807 us, min = 271 us, max = 5271 us, std dev = 309 us @ Small = 44 and Large = 0Minimum Small Latency = 271 usecs @ Small = 1 and Large = 0Small Read Latency: avg = 271 us, min = 113 us, max = 1607 us, std dev = 17 us @ Small = 1 and Large = 0Small Read/Write Latency Histogram @ Small = 44 and Large = 0Latency: # of IOs (read)

original 2016-07-11 Yang Shanggang Docker Flash existence in the past few years the storage domain has developed very fast, the application is also more and more widespread, how to use the flash memory better, this share tells some flash related optimization and the application.Flash application Scenarios Database Nosql Distributed storage Cdn Public cloud storage Combined with the above scenarios, flash memory is primarily suitable for scenarios with high random I

dimension smaller Network monitoring of Sysstat common commands Sar-n DEV-F Network Monitoring statistics Sar-n Nfs-f If the data in this table is greater than 0, the network has errors, which is a more serious situation Evaluating disk read and write performance limits Fio-filename=/tmp/test-direct=1-iodepth 1-thread-rw=randrw-ioengine=psync-bs=16k-size 2g-numjobs=10-runtime=30- group_reporting-name=mytest13 Fio is also a tool, so make sure the system is installed After running the above c