codecademy intensive

Mysql_real_connect () Client_ Interactive definition). Parameter default value: 28,800 seconds (8 hours) # The maximum number of connections supported by the MySQL server is capped, because each connection is built to consume memory, so we want the client to disconnect and free up memory when connecting to MySQL server after the corresponding operation has been processed. If your MySQL server has a large number of idle connections, they will not only consume memory in vain, but if the connectio

= single I/O service time (1 + 2 + ... + total requests-1)/Total requestsApply to the above example: Average wait time = 5ms (1+2+...+28)/29 = 70ms, and the average wait time for 78ms given by Iostat is very close. This in turn indicates that I/O is initiated concurrently.The number of I/O requests per second (about 29), the average queue is not long (only 2 or so), indicating that the arrival of these 29 requests is uneven, most of the time I/O is idle.14.29% of the time in a second I/O queue

] ~]$ cd/U01/App/Oracle/Diag/Rdbms/Ora11gr2/Ora11gr2/Trace[[email protected] Trace]$ ls-LRT-rw-R-----1 oracle oinstall 3290 Oct 15:53 ora11gr2_ora_4318.trm-rw-R-----1 oracle oinstall 833329 Oct 15:53 ora11gr2_ora_4318.trc⑦ to view the generated trace file with Tkporf:[[email protected] Trace]$ tkprof ora11gr2_ora_4318.trc trace1tkprof:release11.2.0.4.0 -Development onMon Oct - -: .: $ .Copyright (c)1982, ., Oracleand/orits affiliates. Allrights reserved.[[email protected] Trace]$ ls trace1.prf

In the study of reinforcement Learning (four) using Monte Carlo Method (MC), we discuss the method of solving reinforcement learning problem by Monte Carlo method, although Monte Carlo method is flexible and does not need the state transition probability model of environment, but it needs all sampling sequences to undergo a complete state sequence. If we do not have a complete sequence of states, then we cannot solve it using Monte Carlo method. In this paper, we discuss the method of solving th

Label:Trigger reason: At the end of the month when the system checkout the operation of the ERP more, there is a user feedback system between the data transmission for a long time without synchronization. Then to the server to view, did not find a program caused by the problem, looked at the CPU utilization, found that the SQL Server occupancy rate of more than 90%.Resolution process: First Baidu, look at the possible reasons should be the index problem. Previously there was a careful look at th

This is the summary note of the first lesson of David Silver's intensive learning public class. The first lesson mainly explains the embodiment of reinforcement learning in many fields, mainly solves what problem, differs from supervised learning algorithm, which part of complete algorithm flow consists of, and what content the agent contains, and explains some concepts involved in reinforcement learning. "Reprint please indicate the source" Chenrudan

2012-11-19 15:38:04 Category: LINUX1. Top 10 CPU-intensive processes: PS Auxw|head-1;ps auxw|sort-rn-k3|head-10 2. The top 10 processes of memory consumption PS Auxw|head-1;ps auxw|sort-rn-k4|head-1 0 3. The top 10 processes for virtual memory use PS Auxw|head-1;ps auxw|sort-rn-k5|head-10 4. You can also try PS auxw--sort=rss PS auxw--sort=%cpu 5. Take a look at a few parameters including The memory occupancy rate of the%MEM process MAJFL is the major

case of contracting 100 acres of farmland, and then in the original preparation for sowing in 10 acres of seeds, scattered spread to 100 acres of the field, to the harvest time is a few acres of land per mu. Even if the final yield is the same as that produced in 10 acres, the energy invested is completely unreliable. Farming to increase the total production is not only to expand the area of such a method, there is a way to increase the unit area of production. Do the site is not only expansion

-entered statements into statistics-related constraints such as select Count/max/min augmented Pointer Network used here,augmented Pointer Networkin general, it is also a ecoder-to-decoder structure,Encoder uses two layers of bi-lstm, decoder uses two layers of unidirectional LSTM, encoder output h,ht corresponding to the output status of the T Word decoder each step is, input y s-1, output status GS, and then , decoder generates a attention score for each location T, resulting in a finalIn Seq2

, Indicates the current page is not in memory), N (Low priority Task) T (terminate termination), W has no resident pages D non-disruptive uninterruptible sleep (usually IO) R NBS p; , running, or process in queue; in hibernation T Stop or be tracked Z zombie process W Enter memory swap (invalid starting from kernel 2.6) X ; dead process N low-priority Some pages are locked into memory , s contains sub-process + in Background pro

To give you users of Photoshop software to elaborate on the business of the late intensive course. Tutorial Sharing: First of all, look at the comparison of the revised picture. The original image lacks a sense of hierarchy and texture, so in the latter part of the emphasis on adjusting these two aspects. First, modify the screen my intention is to make the picture more balanced, so decided to drop the left h

For the users of Photoshop software to explain the detailed interpretation of the business portrait of the hair treatment of the intensive tutorial. Tutorial Sharing: Original Final effect 1, first of all, we open the picture in the PS, to observe, found that hair problems a lot, choose hair shape and trend of the better part. The following figure. 2, then copy, move to the appropriat

SQL statements that execute a plan that consumes large amounts of memory and that are reused less frequently. See if it is reasonable to call the method. In addition, you can analyze the execution plan by using more frequently repeated SQL statements to see if the execution plan has been optimized. Further, through the analysis of the query plan, we can find some SQL statements which occupy the most Io, CPU time and the most number of executions in the system, and then perform the corresponding

Dept d,emp E where E.deptno=d.deptno GROUP by Dname have avg (SAL) >2000; 8. Show departments and jobs for each department with a salary greater than 2500 per job Select deptno,job from EMP GROUP by Deptno,job have avg (SAL) >2500; 9. Show that the job name includes "man". And the average wage is more than 1000 of the job name and average wage Select Job,avg (SAL) from the EMP group by job has the AVG (SAL) >1000 and job like '%man% '; 10. Show the highest average wage in the department 11. Lis

1. List the names of all employees and their immediate superiorsSelect a.ename,a.mgr,b.ename,b.empno from emp a,emp b where a.mgr=b.empno (+);2. List the name of the department and the employees of those departments, together with the departments that do not have employeesSelect dept.deptno,dname,ename from Emp,dept where Emp.deptno (+) =dept.deptno;3. Show employee names for all departments in "NEW YORK" (Dept table Loc Field)Select e.ename from emp e,dept d Where e.deptno=d.deptno and d.loc= '

d,emp E where E.deptno=d.deptno GROUP by Dname have avg (SAL) >2000;8. Show departments and jobs for each department with a average wage greater than 2500 per jobSelect deptno,job from EMP GROUP by Deptno,job have avg (SAL) >2500;9. Work name and average salary with "man" in the job name and average salary greater than 1000Select Job,avg (SAL) from the EMP group by job has the AVG (SAL) >1000 and job like '%man% ';10. Show the highest average wage in the department11. List of jobs with a minimu

-two to the User information tableUser_info =models. Onetoonefield (userprofile) Username= Models. Charfield (U'User name', max_length=256) Password= Models. Charfield (U'Password', max_length=256) classmeta:verbose_name_plural="User Login Account"classUserGroup (models. Model):#Many-to-many relationships for users and user groupsname= Models. Charfield (max_length=32, Db_index=true, unique=True) Users= Models. Manytomanyfield ('UserProfile', Null=true, blank=True)def __unicode__(self):return

\. ' {print$1} ') echo "User memory (physical memory) Total:" $USERMEM mbecho# View File system cache: clientmem1= ' svmon-g|grep "^pin" |awk ' {print$4} ' clientmem2= ' Svmon -G|grep "^inuse" |awk ' {print$5} ' clientmem= ' expr $clientmem 1+$ Clientmem2 ' clientmem= ' expr $clientmem /256 ' echo ' file system cache (physical memory): "echo $clientmemmbecho# viewing the system using Memory: sysmem=$ (svmon-s-s-u|cut-b54-|grep-v "0 000 "|grep[0-9]|awk ' {print$1,$2} ') supremeseg= ' echo" $sysm

Do you need to install these environments? How to ensure security? Use the framework? Interface used? Do you need to install these environments? How to ensure security? Use the framework? Interface used? Reply content: Do you need to install

To create a two-dimensional list:Animals = []for i in Range (5): Animals.append (["O" * 5])Read the two-dimensional list:Print Animals[0][0]Use index in list for:choices = [' pizza ', ' pasta ', ' salad ', ' nachos ']print ' Your choices is: ' for