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How to see top processes sorted by actual memory usage?
...t too much effort.
Second, you want to find the processes that are eating all your memory; in top use the M command to sort by memory use. Feel free to ignore the VIRT column, that just tells you how much virtual memory has been allocated, not how much memory the process is using. RES reports how m...
Compiled vs. Interpreted Languages
...et machine, but instead read and executed by some other program (which normally is written in the language of the native machine). For example, the same "+" operation would be recognised by the interpreter at run time, which would then call its own "add(a,b)" function with the appropriate arguments,...
How to detect idle time in JavaScript elegantly?
...ng a semicolon after the $(document).ready(function() body. Also, in the call to setInterval, it won't work with quotes around the function name and you don't need the parentheses after it. Just: setInterval(timerIncrement, 60000)
– Jesse Roper
Apr 5 '13 at ...
How do I measure execution time of a command on the Windows command line?
... keyname.
-a specifies that timeit should display average of all timings
for the specified key.
-i specifies to ignore non-zero return codes from program
-d specifies to show detail for average
-s specifies to suppress system w...
低效程序员的7个坏习惯 - 创意 - 清泛网 - 专注C/C++及内核技术
...le的Charles解释道，“低效的工程师会错误地表征用户体验问题为其他人的问题。”
遗憾的是，似乎很多软件工程师都持有这种态度，这也是为什么企业要寻求能够移情和了解他人问题的代码战士。 “雇主正在竭力寻找那些拥有...
c++ volatile关键字简析 - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ volatile关键字简析volatile防范冲突，提高效率。降低CPU Cache Line锁冲突的几率。不同于普通变量在于：CPU缓存中有值的话，也得从内存中重新加载到缓存（普通变量不会）；即认为寄存器值不可靠， volatile 防范冲突，提高效...
Echarts透明背景及兼容问题 - 用户反馈 - 清泛IT社区，为创新赋能！
用户反馈wxbit导入失败：高德地图，启动画面等导致。
Echart是自己导入及实现的，背景透明没有效果，最终WebViewPlus拓展解决了。
方法一:
var option={
backgroundColor:'rgba(128, 128, 128, 0.1)' //rgba设置透明度0.1
}
方法二:
va...
What is the function of the push / pop instructions used on registers in x86 assembly?
...es. The general usage is
push eax ; preserve the value of eax
call some_method ; some method is called which will put return value in eax
mov edx, eax ; move the return value to edx
pop eax ; restore original eax
A push is a single instruction in x86, which do...
How do function pointers in C work?
...nPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFac...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...同时读写可能会有IO异常,导致drbd设备失效
为了解决这个问题则使用 gfs + cman 实现分布式文件锁方案
3.3安装cman
yum –y cman
3.4 gfs集群文件系统
在 /usr/local/drbd-utils-8.9.4/etc/drbd.conf
在配置文件的 net 选项中
all...