摘要: 系統平均負載被定義為在特定時間間隔內運行隊列中的平均進程樹。如果一個進程滿足以下條件則其就會位于運行隊列中：
它沒有在等待I/O操作的結果
它沒有主動進入等待狀態(也就是沒有調用'wait')
沒有被停止(例如：等待終止)
上面的輸出，load average后面分別是1分鐘、5分鐘、15分鐘的負載情況。數據是每隔5秒鐘檢查一次活躍的進程數，然后根據這個數值算出來的。如果這個數除以CPU 的數目，結果高于5的時候就表明系統在超負荷運轉了。
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摘要: 最近在開發java web application的時候，因為很多原因，無法對自己開發的項目在本地進行調試，常常需要進行遠程調試，之前一直通過打logger的方式進行，每次都要重新部署，相當的痛苦，今天下午研究了以下，如果進行遠程調試。
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摘要: 服務器端主要是安裝memcache服務器端
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摘要: FTP works on a client/server model. The server component is called an FTP daemon. It continuously listens for FTP requests from remote clients. When a request is received, it manages the login and sets up the connection. For the duration of the session it executes any of commands sent by the FTP client.
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摘要: SSH stands for “secure shell”, and it is a network protocol that allows you to securely send commands to a remote machine. The “secure” part comes from the fact that the connection is encrypted, which means that an attacker cannot eavesdrop on the connection, or intercept and replace your commands with his own midway through transit. SSH is pretty reliable and secure, and is commonly used in the Linux world. Administrators often use it to remotely manage machines – it’s usually more comfortable
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摘要: LAMP stack is a group of open source software used to get web servers up and running. The acronym stands for Linux, Apache, MySQL, and PHP. Since the virtual private server is already running Ubuntu, the linux part is taken care of. Here is how to install the rest.
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