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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...
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
...
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...
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...
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...
OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
..._list_t session_list_node;
//为了快速根据packet id定位到发送队列中的session，将session加入到发送队列中时，同时，将其加入到一个hash表中，hash表采用链表的方式将同一个bucket的元素连接起来，
//链表元素就是easy_ha...
Difference between core and processor
...ory controller to talk to the memory, I/O controllers (display, PCIe, USB, etc..). In the past these elements were outside the CPU, in the complementary "chipset", but most modern design have integrated them into the CPU.
In addition the CPU may have an integrated GPU, and pretty much everything el...
WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Windows消息的方式接收网络事件通知。许多对性能要求不高的网络应用程序都采用WSAAsyncSelect模型，MFC的...WSAAsyncSelect模型允许应用程序以Windows消息的方式接收网络事件通知。许多对性能要求不高的网络应用程序都采用WSAAsyncSelect...
如果你一心只想赚钱 那就别创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...uckerberg拒绝了这个提议，以及来自谷歌等其它公司出价更高的收购提议。他连接所有人的使命还尚未完成。但如今，Facebook市值已超过2000亿美元。
十亿美元怎么说都不是一笔小数。想像一下如果谷歌和Facebook都已经以十亿美元...