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MySQL high CPU usage [closed]
...ication is running, if there's duplicate queries, how long they're taking, etc, etc. An example of something like this is one I've been working on called PHP Profiler but there are many out there. If you're using a piece of software like Drupal, Joomla or Wordpress you'll want to ask around within t...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...更容易，更能清楚地表达你的意图，而且它们表现出了更高的效率。
第6条：当心C＋＋编译器最烦人的分析机制。
把形参加括号是合法的，把整个形参的声明（包括数据类型和形参名字）用括号括起来是非法的。
第7条：...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...尽量避免创建不必要的对象，有下面一些例子来说明这个问题：
如果你需要返回一个String对象，并且你知道它最终会需要连接到一个StringBuffer，请修改你的实现方式，避免直接进行连接操作，应该采用创建一个临时对象来做...
Approximate cost to access various caches and main memory?
...es for example).
Additionally, this page has some details on clock cycles etc. The second link served the following numbers:
Core i7 Xeon 5500 Series Data Source Latency (approximate) [Pg. 22]
local L1 CACHE hit, ~4 cycles ( 2.1 - 1.2 ns )
local L...
How can I connect to MySQL in Python 3 on Windows?
...ysql.connect(host='127.0.0.1', unix_socket='/tmp/mysql.sock', user='root', passwd=None, db='mysql')
cur = conn.cursor()
cur.execute("SELECT Host,User FROM user")
for r in cur:
print(r)
cur.close()
conn.close()
share
...
What happens when a computer program runs?
...-+
| stack | function-local variables, return addresses, return values, etc.
| | often grows downward, commonly accessed via "push" and "pop" (but can be
| | accessed randomly, as well; disassemble a program to see)
+---------+
| shared | mapped shared libraries (C libraries, ...
https connection using CURL from command line
...t file3.pem -text
cat *.pem > certRepo
curl --cacert certRepo -u user:passwd -X GET -H 'Content-Type: application/json' "https//somesecureserver.com/rest/field"
I wrote a blog on how to do this here: http://javamemento.blogspot.no/2015/10/using-curl-with-ssl-cert-chain.html
...
IOS 设备忘记root密码怎么找回 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
搜索iFile
然后打开iFile找到etc/scroll目录
找到’master.passwd’文件
使用Text Viewer,按编辑按钮打开编辑器
找到类似于root:UlGASB5XWDrOc:0:0::0:0:
我们需要编辑的UlGASB5XWDrOc这一段
使用’crypt’函数进行算新密码,这里推荐...
常用Linux命令详解（持续更新） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...到的一些Linux命令进行一下详解。logout,shutdown,reboot,useradd,passwd,ls,ll,cd,mkdir,vi,cp,rm,mv,chmod,chown,find,grep,tail,tar,gzip,fdisk,kill,netstat等。一、注销，关机，重启，新建用户、删除用户
1. 注销系统的命令
logout 、exit
这两个命令都可以用...
How to fix: “UnicodeDecodeError: 'ascii' codec can't decode byte”
...e
E.g.
>>> db = MySQLdb.connect(host="localhost", user='root', passwd='passwd', db='sandbox', use_unicode=True, charset="utf8")
PostgreSQL
Add:
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
psycopg2.extensions.register_type(psycopg2.extensions.UNICODEARRAY)
HTTP
W...