qsfp28 100g

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MySQL Benchmark tool-sysbench installation test

Latency (ms,95%): 35.589 T hroughput:read:iops=204.22 3.19 mib/s (3.35 MB/s) write:iops=136.15 2.13 mib/s (2.23 MB/s) fsy nc:iops=442.70 Latency (ms): min:0.00 avg: 5.14 max:310.70 95th percentile:35.59 su m:239996.51 [[emailprotected] sysbench-master]# sysbench--threads=4--time=60--report -interval=10--file-test-mode=rndrw FileIO cleanup #清理文件 sysbench 1.1.0 (using bundled Luajit 2.1.0-beta3) removing test Files ... Memory Test Test 4

MySQL B-tree index and index optimization

is not too big? The physical disk is much cheaper than memory, take a memory 16G HDD 1T Server For example, if you want to fill 1T hard disk, at least 100G of memory , far greater than 16G.Consider that there may be multiple indexes on a table, federated indexes, smaller data rows, and so on, the actual occupancy ratio is usually greater than 1/10, sometimes up to 1/3. In an index-based storage schema, the 索引:数据的占用比 index cannot be loaded into memory

Some of the pits that VMware migrated to OpenStack

-win2008r2_110.100.100.110-disk1.vmdkfile format: vmdkvirtual size: 100G (107374182400 bytes)disk size: 14Gcluster_size: 65536Format specific information: cid: 4099282801 parent cid: 4294967295 create type: streamOptimized extents: [0]: compressed: true virtual size: 107374182400 filename: anquanpingtai-win2008r2_10.100.100.110-disk1.vmdk cluster size: 65536 2. Upload the image

Linux System Introduction & partitioning & basic Commands (ADMIN01-1)

File system, fourth generation extended file systemXfs:rhel7 default file system, advanced log file systemSwap: Swap space (virtual memory) takes the space of the hard disk as memory, easing the use of real memory pressureIV. directory Structure 4.1 definitionTree-shaped structure, all documents4.2 Root directoryEquivalent to Windows "computer" or "My Computer"means: "/"Function: Store all data (starting point of the Linux system)4.3/devFunction: Storage of hard disk, keyboard, mouse, optical d

Common Cache Technology for PHP enterprise applications

. See the following running time, such as 0.09xxx. My post part is modified according to the guy in blue. ini. The MYISAM table of 2 GB can be around 5s. It is said that he has changed it for almost a year. [Client] ...... Default-character-set = gbk Default-storage-engine = MYISAM Max_connections = 600 Max_connect_errorrs = 500 Back_log = 200 Interactive_timeout = 7200 Query_cache_size = 64 M ...... Table_cache = 512 ...... Myisam_max_sort_file_size = 100G

Comparison between MySQLMyISAM engine and InnoDB Engine

MyISAM 100W:273/s InnoDB 100W:423/s [Insert data 3] (innodb_buffer_pool_size = 1024 M) InnoDB 1W:3/s InnoDB 10W:33/s InnoDB 100W:607/s [Insert data 4] (innodb_buffer_pool_size = 256 M, innodb_flush_log_at_trx_commit = 1, set autocommit = 0) InnoDB 1W:3/s InnoDB 10W:26/s InnoDB 100W:379/s [MySQL configuration file] (default configuration) # MySQL Server Instance Configuration File [client] port=3306 [mysql] default-character-set

Comparison between MySQL MyISAM engine and InnoDB Engine

in developers ."; [Insert data-1] (innodb_flush_log_at_trx_commit = 1)MyISAM 1 W: 3/s NnoDB 1 W: 219/s MyISAM 10 W: 29/s NnoDB, 10 W: 2092/s MySQL MyISAM 100 W: 287/s InnoDB 100 W: Dare not test [Insert data-2] (innodb_flush_log_at_trx_commit = 0) MyISAM1W:3/s InnoDB1W:3/s MyISAM10W:30/s InnoDB10W:29/s MyISAM100W:273/s InnoDB100W:423/s [Insert data 3] (innodb_buffer_pool_size = 1024 M) InnoDB1W:3/s InnoDB10W:33/s InnoDB100W:607/s [Insert data 4] (innodb_buff

Common cache technology for PHP Enterprise Applications

for almost a year. [Client] ...... Default-character-set = gbk Default-storage-engine = MYISAM Max_connections = 600 Max_connect_errorrs = 500 Back_log = 200 Interactive_timeout = 7200 Query_cache_size = 64 M ...... Table_cache = 512 ...... Myisam_max_sort_file_size = 100G Myisam_max_extra_sort_file_size = 100G Myisam_sort_buffer_size = 128 M Key_buffer_size = 1024 M Read_buffer_size = 512 M ...... Thread_

PHP enterprise application cache technology details

Interactive_timeout = 7200 Query_cache_size = 64 M ...... Table_cache = 512 ...... Myisam_max_sort_file_size = 100G Myisam_max_extra_sort_file_size = 100G Myisam_sort_buffer_size = 128 M Key_buffer_size = 1024 M Read_buffer_size = 512 M ...... Thread_concurrency = 8 Reverse proxy-based Web cache For example, Nginx, SQUID, mod_PRoxy (apache2 and above are also divided into mod_proxy and mod_

PHP Cache technology

year.Code copy box [Client] ...... Default-character-set = gbk Default-storage-engine = MYISAM Max_connections = 600 Max_connect_errorrs = 500 Back_log = 200 Interactive_timeout = 7200 Query_cache_size = 64 M ...... Table_cache = 512 ...... Myisam_max_sort_file_size = 100G Myisam_max_extra_sort_file_size = 100G Myisam_sor

Win7+centos dual System (i)

open the Wingrub and use the tools  Get the number of your new partition  It's hd0,4, remember.Then open EasyBCD and add the startup item  Configure  Then the reboot is complete and the second part is completed;Reboot Select Neogrub BootStep-by-step installation    Language selection, above means Simplified Chinese, English is selected by default  So, where did you put the installation file DVD? You try it ... I'm not quite sure about your disk partitionThe following picture indicates that the

[C #] Getting internal computer information-Computerinfohelper

"; /// ///video card/// Public Const stringVideocontroller ="Win32_VideoController"; /// ///Operating System/// Public Const stringOperatingSystem ="Win32_OperatingSystem"; }}Second, the test1. Computer hard Drive information2. Hard drive information in My Computer3. Test code4. Output Result:All hard disk and USB stick and memory card, because the manufacturer's calculation method and operating system calculation method is not the same, the former according to

Large page memory (hugepages)

can see that based on the fingerprint of music retrieval (listening to songs) a total of three parts: 1. extract fingerprints; 2. Access the fingerprint library; 3. Sort the time difference. In multithreaded situations, the time-consuming proportions of these three parts are approximately 1%, 80%, and 19%, which means that most of the time is spent looking at the operation of the fingerprint library. The more troublesome point is that the access to the fingerprint library is all random access,

Simplified Production environment Zoning recommendations

Server 300G-2T Total Space/boot 100-200mSwap 1.5 times times memory (if greater than 8G, give 8-16g)/40-100g (Do not let the program and the system write log etc here)The rest of the space for the use of the people to divideIf it is a Web server cluster, the remaining space will be given/, because there is a cluster backupDatabase server/boot 100-200mSwap 1.5 Memory/40-80-100g/data all the remaining space i

Server to high-anti-choice "South Korea ka High-anti-machine room" more than a shield million NP firewall cluster, no record, no longer worry about being killed!

In this hostile society, are you still worried about the server being attacked? Still worried about the server being killed? Tell you to use the South Korea KA High-protection server, no longer worry about the server was killed. Korea KA server can provide a single anti-100G (100G udp+10g TCP), more than a shield million gigabit NP enterprise-class hardware firewall cluster, single-machine commitment to 10g

OEMCC 13.2 Cluster Version installation deployment

Prior to testing the deployment of OEMCC 13.2 stand-alone, specific reference before the essay: OEMCC 13.2 Installation Deployment Environment: two hosts, System Rhel 6.5, respectively deployed OMS and OMR:OMS, which is OEMCC's server ip:192.168.1.88 memory: 12g+ HDD: 100g+OMR, which is the OEM bottom-level repository ip:192.168.1.89 memory: 8g+ HDD: 100g+The equivalent of OMS and OMR are stan

PHP enterprise application cache technology details

'); Mysql_select_db ('test '); $ Result = mysql_query ($ SQL ); While ($ row = mysql_fetch_object ($ result )) $ Datas [] = $ row; // Save the result set data obtained from the database to memcached for the next access $ Mc-> add ($ key, $ datas ); } Else { Echo "n". str_pad ('read datas from memcached. ', 60,' _ '). "n "; } Var_dump ($ datas ); ?> PHP buffer For example, eaccelerator, apc, phpa, and xcache. MySQL cache This is not code-level. the classic database uses this meth

The caching technology under PHP

[Client] ...... Default-character-set=gbk Default-storage-engine=myisam max_connections=600 max_connect_errors=500 back_log=200 interactive_timeout=7200 query_cache_size=64m ...... table_cache=512 ...... myisam_max_sort_file_size=100g myisam_max_extra_sort_file_size=100g myisam_sort_b

Reprint-Four free foreign PHP hosting services

Reprint--4 free foreign PHP hosting services These hosts are no ads, and provide a lot of advanced features, such as FTP access, support PHP and MySQL, custom domains and free subdomains, and so on, the most important is to support PHP, then you can do blog host only use, novice afraid to buy the host will not play, You can use them to build a website to practice. 1.000WebHost 000WebHost offers one of the most reliable and feature-rich hosting services, no ads. All accounts have 1500M of disk

How php large file uploads are implemented

How is PHP large file upload implemented? Title, video sites want to realize the user to share their own video (size control within 1G). Directly on the code is more grateful ~ ------Solution-------------------- discuss Title, video sites want to realize the user to share their own video (size control within 1G). Directly on the code is more grateful ~ ------Solution-------------------- discuss If, only part of the internal personnel, use, directly open FTP

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