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MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... | grep 10240 -A 10
所有连接消耗的内存加起来会相当惊人，推荐把Stack设置小一点，比如说1024：
shell> ulimit -s 1024
注：从MongoDB1.8.3开始，MongoDB会在启动时自动设置Stack。
有时候，出于某些原因，你可能想释放掉MongoDB占用的内存...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... | grep 10240 -A 10
所有连接消耗的内存加起来会相当惊人，推荐把Stack设置小一点，比如说1024：
shell> ulimit -s 1024
注：从MongoDB1.8.3开始，MongoDB会在启动时自动设置Stack。
有时候，出于某些原因，你可能想释放掉MongoDB占用的内存...
理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...m_score_adj
当然，如果需要的话可以完全关闭 OOM killer（不推荐用在生产环境）：
# sysctl -w vm.overcommit_memory=2
# echo "vm.overcommit_memory=2" >> /etc/sysctl.conf
找出最有可能被 OOM Killer 杀掉的进程
我们知道了在用户空间可以通过操作...
Yank file name / path of current buffer in Vim
...("mac") || has("gui_macvim") || has("gui_mac")
" relative path (src/foo.txt)
nnoremap <leader>cf :let @*=expand("%")<CR>
" absolute path (/something/src/foo.txt)
nnoremap <leader>cF :let @*=expand("%:p")<CR>
" filename (foo.txt)
nnoremap <leader>ct...
How do I create a Java string from the contents of a file?
...e encodings required of all Java runtimes:
String content = readFile("test.txt", StandardCharsets.UTF_8);
The platform default is available from the Charset class itself:
String content = readFile("test.txt", Charset.defaultCharset());
Note: This answer largely replaces my Java 6 version. The uti...
Android: How can I validate EditText input?
...extWatcher interface
You add TextChanged listeners to you EditText boxes
txt1.addTextChangedListener(this);
txt2.addTextChangedListener(this);
txt3.addTextChangedListener(this);
Of the overridden methods, you could use the afterTextChanged(Editable s) method as follows
@Override
public void a...
Read whole ASCII file into C++ std::string [duplicate]
...#include <fstream>
#include <streambuf>
std::ifstream t("file.txt");
std::string str((std::istreambuf_iterator<char>(t)),
std::istreambuf_iterator<char>());
Not sure where you're getting the t.open("file.txt", "r") syntax from. As far as I know that's not ...
How to get filename without extension from file path in Ruby
...known (it needs the / separator):
irb(main):024:0> f = 'C:\foobar\blah.txt'.gsub("\\","/")
=> "C:/foobar/blah.txt"
irb(main):027:0> File.basename(f,File.extname(f))
=> "blah"
share
|
i...
How to concatenate two strings in C++?
... private class variable char name[10] to which I would like to add the .txt extension so that I can open the file present in the directory.
...
Escape double quotes in parameter
... the command line text "a\"b c" > d and redirect its output to file out.txt, then start your program as follows from the Windows command shell:
foo ^"a\^"b c^" ^> d > out.txt
If foo interprets \" as a literal double quote and expects unescaped double quotes to delimit arguments that incl...