64gb lrdimm

Tags: style io ar color OS using SP for strongWith the improvement of a large number of default options, MySQL 5.6 has significantly fewer options than the previous version needs tuning. In this article I will describe the configuration items that need to be optimized. InnoDB settings 1.innodb_buffer_pool_size --The default value is 128M. This is the primary optimization option because it specifies how much memory InnoDB uses to load data and indexes (data+indexes). For dedicated MySQL servers,

other databases require a proprietary cache (primarily used to cache the extracted data for block compression), and we set the private cache setting to 3GB for these databases.At the same time this test we do not limit the operating system memory usage (total memory 64GB), the amount of data is much smaller than memory, the operating system can cache all the data.We can see that TERARKDB is better than other databases in this case: TERARKDB

again, let's take 50w as the limit.In the above two databases with primary key inserted, the MD5 source generated by the above step is queried for input. Similarly, 1000 data per query is written to the current system time in the log file.Test results:The horizontal axis of the following three graphs is the time required for each query of 1000 data, in s; ordinate is the size of the query, divided into 1w, 5w,10w, 20w, 50w five levels.This picture is a detailed comparison, can you see the diffe

memory used as key_buffer_size. The reasonable value depends on the index size, the amount of data, and the load-remember, the MyISAM table caches the data using the operating system's cache. Therefore, we need to set aside some memory for them, in many cases the data peso is mostly. Can be viewed through the key_blocks_unused of show GLOBAL STATUS,as long as there is surplus, it means that key_buffer_size is useless. If you rarely use the MyISAM table, you also keep the key_buffer_size below 1

Label:With the improvement of a large number of default options, MySQL 5.6 has significantly fewer options than the previous version needs tuning. In this article I will describe the configuration items that need to be optimized. InnoDB settings 1.innodb_buffer_pool_size --The default value is 128M. This is the primary optimization option because it specifies how much memory InnoDB uses to load data and indexes (data+indexes). For dedicated MySQL servers, it is recommended that you specify th

, our test machine memory is 64GB, the larger the memory MongoDB query faster, after all, disk and memory I/O efficiency is not a magnitude. 2. The data of the query in this experiment is also randomly generated, so the probability that the data to be queried exists in the memory cache of MongoDB is very small. At query time, MongoDB needs to interact with the disk multiple times to find the data in memory, so its query rate depends on the number of

allocation caused by a bug, I also come in my environment to operate a, a look at exactly: 1. Record the current amount of memory occupied by the MySQL process ; 2. Record show engine InnoDB status; 3. Implementation of the flush tables; 4. Record show engine InnoDB status; 5. Record the MySQL process footprint, 6 compare these two results to see if there is any noticeable change in the memory allocated by MySQL before the Flush table and flush table. Well, this bug doesn't seem to be my place

operating system's resources and memory, which is certainly not a problem for the current hardware configuration. If you have more than 200 tables, it might be appropriate to set it to 1024 (each thread needs to open the table) and increase its value if the number of connections is larger. I've seen cases set to 100,000.Thread_cache -The cost of creating and destroying threads can be significant, as each thread is required to connect/disconnect. I usually set it at least to 16. If there is a la

means that you need to lower the maximum server memory setting. With 64GB of physical memory I will configure the maximum server memory to 56GB, so that the system can use the remaining 8G to consume and work. Parallel overhead threshold (cost Threshold for Parallelism) The next configuration option you need to modify is the threshold for SQL Server to handle the parallel overhead. Parallelism means that SQL Server can run operators in the execution

value depends on the index size, the amount of data, and the load-remember, the MyISAM table caches the data using the operating system's cache. Therefore, we need to set aside some memory for them, in many cases the data peso is mostly. It can be viewed through the key_blocks_unused of show GLOBAL STATUS, as long as there are remaining, it means key_buffer_size is useless. If you rarely use the MyISAM table, you also keep the key_buffer_size below 16-32MB to accommodate the temporary table ind

. And we can't ignore the strong brand influence of Apple and the more comfortable and smooth experience of the new iOS system. Picture of Apple IPhone6The Apple IPhone6 has a 4.7-inch capacitive touch screen at the front, with a resolution of 1334x750 pixels, and the display works very well. There is also a 8 million megapixel isight camera on the back of the fuselage with a 5P lens unit pixel size of 1.5μm, including true tone flash, and support for features such as optical image stabilization

to the 5 floor of the treatment of ideas, this is considered to have conquered. I redis.windows.conf searched for "" in the file and heapdir then added a line below the default gaze to specify the path to the Redis memory-mapped file (mapped files):# HEAPDIR Specifies the memory-mapped file path name, cannot be the file name # Heapdir Detailed files and folders please specify according to your own disk. My symptoms and situation is this, 16GB memory, Windows version 64bit Redis, after starting

650) this.width=650; "title=" 1.jpg "src=" Http://s3.51cto.com/wyfs02/M00/72/2A/wKioL1XefSnR7j_fAADddLL8xRI666.jpg " alt= "Wkiol1xefsnr7j_faadddll8xri666.jpg"/>Recently, Samsung in Shanghai held two new flagship mobile phone release, Galaxy Note5 and Galaxy S6 edge+. At the conference, Samsung did not introduce much of its hardware performance, because Samsung's hardware strength is beyond doubt, and more is to begin to emphasize to meet the needs of users to derive the service capabilities. So,

-and high-end smartphone shipments, representing a 31% increase in the total number of mobile phone shipments.In addition, "China cool United" in the ZTE also abandoned the machine sea tactics, the first half of this year launched a price of 2999 Yuan 3, its independent brand Nubian is also positioning the high-end market, the issue of borderless mobile phone Z9, pricing 3999 yuan. ZTE said it expects 2015 years of high-end smartphone shipments to reach 45%, more than 35% in 2014.Cool faction to

the keyboard and press enter to enter a directory. Move the pointer to exit and exit the current directory to the parent directory;Select the CPU of your machine; 2) Modify existing problems on your machine, such as support for large memory; Move the keyboard to processor type and features ---> and press Enter;Find Processor family (Pentium-Pro) ---> press enter to enter; After entering, we found that there are a lot of CPU models available; in general, accordingBash-3.00 # select the output in

to use Python (glue language, which happens to be the original purpose of the Python founders). So a lot of people talk about Python, but look closely at what he doesn't do for the site .... 2, I think the Python row second is expected, because last year was big data, you casually asked a big data on the edge of the people, ask them what language work, I think Python must be in this list first, to say why? One is that because Python is a dynamic language, the explanation runs quickly (and one t

Windows System Management (i) VMware installation and Windows Server System InstallationA. IntroductionWindows the classificationWindows divided intoClient ( Client ): Windows 2000professional , Windows XP Professional , WindowsVista , Windows7 , Windows8For end-user use (e.g. home users)Server ( Server ): Windows NT Server , windows2000 Server , Windows Server 2003 , WindowsServerA computer (such as an enterprise) that provides various services to end usersWindows Server memberWindows Server

Requires highly available, high-performance file systems Traditional single server and NAS sharing is difficult to meet requirements such as storage capacity, high availability Ceph Production Environment recommendations The storage cluster uses a full million gigabit network Cluster network (non-external) separate from public network (using different network cards) Mon, MDS and OSD are separated and deployed on different machines Journal recommended PCI SSD, G

Install the Hypervisor 6.4 I. Hardware requirements 1. cpu amd haolong series: G1, G2, and G3 Inter series core, Penryn architecture (core upgrade), Nehalem architecture, and Westmere architecture (the second generation of Nehalem) It must support Inter and AMD 64-bit extensions and Virtualization Technology (VT) Hardware Virtualization Technology. 2. RAM The minimum value is 2 GB and the maximum value is 2 TB. 3. Storage /At least 512 MB The log partition must be at least 2 GB. The Minimum D

1. The maximum addressable space on a 32-bit platform is 4GB, and if you want to use more than 4GB of memory, you must use the Intel PAE (Physical Address Extension) mode, PAE on the Windows NT platform requires only/PAE to boot. ini, and for RHEL5, The default installation mode is not allowed to detect more than 4GB of memory, so you need to install the Kenel-pae suite after the kernel is installed.The hardware of the 2.x86 platform supports the Level two page table, and Intel Perium Pro suppor