trex footprint

Tags: txt help command comm command other characters span file time Inux1 command function (brief description):The command mainly has two usages (1) To change the access time and modification time of the file to the current time, (2) The nonexistent file will be created as an empty file unless the-C or-h option is used;2 Command syntax:Touch "Options" File ... #注: "" is a non-mandatory option3 command options (only common command parameters are described):Use the help command: Man Touch or Touch

directory is listed.--------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------In addition, you may also think of the LS command, the general usage is this:$LS-Alhtotal2.0MDrwxr-xr-xPrompt prompt4.0K December213:44. drwxr-xr-x6 root root4.0K July2316:29.. DRWX------3 Prompt prompt4.0K August1910:25. adobedrwxrwxr-x3 Prompt prompt4.0K July2315:07. amd-rw-rw-r--1 prompt

Code1#!/bin/Bash2 #程序功能描述:3 # Monitoring System The amount of process memory occupied by the selected service4 #作者: Lone boat Point5#版本:1.06#创建时间: .-Ten- A Geneva: -: A7path=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin8 Export PATH9#这里定义监控的服务名称或者PID号TenLine="NetworkManager" One AP= 'pwd` -file= $p/JiankongService.txt -Host= 'hostname` theDay= 'Date+"%y%m%d"` - - #判断文件夹是否存在, existing deletes the rebuild, does not exist the new - if[-D"$p/$i $host$day"]; Then + RM-rf

Google Browser memory footprint of the big how to do ? Chrome browser can be restarted to release a lot of memory, here is a convenient way to make a simple bookmark to quickly restart the Chrome browser, and restart after the chrome can automatically restore just browse all the tabs, one key! Tips for releasing memory from the Chrome browser: 1. Use the shortcut key Ctrl+d (Windows)/Cmd+d (MAC) on any tab, open the Bookmark page, and click "Modi

This article describes the way PHP gets access to the footprint of Google robots. Share to everyone for your reference. Specifically as follows: I hope this article will help you with your PHP program design.

the 1-minute check once, I changed to be the first time check! , and found no reduction of 0 0. I don't know what the reason is. Should be looking for hash, ask the node, and then go back and ask the inside node, the last number of more and more, but I do not understand how to run so much more than a minute to have 600,000. That is to say, there are so many objects in memory that were not released. When this memory footprint is reached, the basic wil

introduces the format of the Smaps file, By analyzing the Smaps file we can learn more about the usage of process physical memory, such as how much space the Mmap file occupies, how much space is consumed by dynamic memory, how much space the function call stack consumes, and so on. Two concepts about memory To understand the output of the top command with regard to memory usage, we must first figure out the two concepts of virtual memory (fictitious Memory) and resident memory (resident Memory

. This consumption is mainly sortlist insertion, internal sorting and removal of records. When it comes to the choice of sortlist or sortdictionary, and then find some information, sortdictionary in the internal use of red-black tree implementation, sortlist using an ordered array implementation, in the internal sort are O (logn) under the premise , the time complexity of Sortdictionary O (LOGN) inserts and deletes elements is better than sortlist, but sortdictionary consumes more memory than so

index, and if the condition is like '%abc ', MySQL will not use the index.ü In an order by operation, MySQL uses the index only if the sort condition is not a query condition expression. However, in queries involving multiple data tables, even if an index is available, those indexes have little effect in accelerating the order by operation.ü If a data column contains many duplicate values, it will not be very effective even if you set up an index for it. For example, if a data column contains t

Tags: col log user occupies Select GPO table ora tables--table name, table space Size (MB), number of rowsSelect table_name, round (num_rows * avg_row_len/1024/1024, 8) as Total_len, num_rowsFrom User_tablesWHERE table_name = ' table name 'ORDER BY TABLE_NAME;--table name, column name, column space Size (MB), number of non-empty rowsSelect C.table_name, C.column_name, round ((t.num_rows-c.num_nulls) * c.avg_col_len/1024/1024, 8) as Total_len, T.num_ro Ws-c.num_nulls as NumsFrom User_tab_columns

Tags: Record man sch info init supplemental Log Puzzle MemoryI have a server memory of 1G, MySQL after the boot up memory of about 450M, memory ratio of about 46%. MySQL memory consumption is too large, resulting in server memory is very tight, and msyql and other processes in the running process often crashes. After finding the relevant data, the following three parameters were added to the my.cnf file:performance_schema_max_table_instances=400table_definition_cache=400table_open_cache=256After

Tags: memory parameter get start ORA 2.0 mini LTE SYSFollow the steps below to adjust the memory 1. Sqlplus/nolog2. Conn/as SYSDBA 3. Show parameter target 4. Show Parameter SGAAlter system set SGA_MAX_SIZE=512M Scope=spfile;Alter system set SGA_TARGET=512M Scope=spfile; 5. Show parameter memoryalter system Set Memory_target = 2048M scope=spfile;Alter system set Memory_max_target =2048m scope=spfile; 6. Shutdown immediate7. Startup If a startup failure occurs, you can start with the default Ini

all privileges; --Cancel All rights auditsNoaudit all on DEFAULT; --Canceling all object audits 10. Clear Audit Information DELETE from SYS. aud$;DELETE from SYS. aud$ WHERE obj$name= ' EMP '; 11. Audit View Stmt_audit_option_map--Audit option type codeAudit_actions--Action codeAll_def_audit_opts--Default object audit options when object is createdDba_stmt_audit_opts--Current database system audit optionsDba_priv_audit_opts--rights audit optionsDba_obj_audit_optsUser_obj_audit_opts--Object audi

Copy Code Advanced go to MySQL comes with management library: INFORMATION_SCHEMAOwn database: Dbwww58com_kuchecarlibOwn table: T_carmodelparamvaluemysql> use INFORMATION_SCHEMA;Database changedMysql> Select Data_length,index_length-From tables where-Table_schema= ' Dbwww58com_kuchecarlib 'and table_name = ' t_carmodelparamvalue ';+-------------+--------------+| Data_length | Index_length |+-------------+--------------+| 166379520 | 235782144 |+-------------+--------------+1 ro

This article mainly introduces how php can obtain the access footprint of Google robots. it involves the use of regular expression matching and predefined server variables, and has some reference value, for more information, see the following example. Share it with you for your reference. The details are as follows: I hope this article will help you with php programming.

destroy the assemblies, which can result in a lot of memory when creating n multiple XmlSerializer.Workaround:1, using the cache, that is, each time the creation of the XmlSerializer object is cached in some way (cache, or static), the next time it is no longer created.2, use the following constructor:Public XmlSerializer (type type);Public XmlSerializer (Type type, String defaultnamespace);For example, the commented out part of the code above is the use of the first constructor. Using this met

it is in the inaccurate Sleep (1) and the burden of each cycle is relatively large, will result in the actual duration of each frame, will exceed the set interval of many, This slows down the speed of the game if the game is timed in the frame step.To solve this problem, I use the way of time alignment. Actually, it's a change. Update Nlast expression: nLast.QuadPart = nNow.QuadPart - (nNow.QuadPart%m_nAnimationInterval.QuadPart); 　　In this way, the total consumption

MySQL learning footprint record 04 -- Data Filtering -- WHERE 1. Use the WHERE clause eg: mysql> SELECT prod_name,prod_price FROM products WHERE prod_price=2.50;+---------------+------------+| prod_name | prod_price |+---------------+------------+| Carrots | 2.50 || TNT (1 stick) | 2.50 |+---------------+------------+ TIPs: * when both order by and WHERE clauses are used, order by is placed after WHERE; otherwise, an error occu

MySQL learning footprint record 13 -- JOIN table -- inner join... ON learning database join table this section content almost vomit blood, read ON the introduction and Baidu to the content, always feel a blank face ..... maybe I have a poor understanding. But I am a person who won't give up easily. After studying for half an hour, I finally figured out the connection principle and summarized myself as follows: The key lies in "select statement. If the

Apache-win32 usually a thinkphp framework write application each request about to occupy 1-2m memory, to the Linux under the Apache run, down to more than 200 k a request, ask why this gap will reach 10 times times? What's the difference between the underlying principle details? Reply content: Apache-win32 usually a thinkphp framework write application each request about to occupy 1-2m memory, to the Linux under the Apache run, down to more than 200 k a request, ask why this gap will reach