Blocked time
includes any pre-processing time (such as cache lookup) and the
time spent waiting for a network connection to become available.
Internet Explorer will only create a maximum of two concurrent
network connections per host name (i.e. www.microsoft.com) and will
queue up requests until a network connection is available. Often
the Blocked time is the most significant factor in the download
time of images embedded in a web
page.
闭塞时间，包括所有的过程之前的时间（像，cache对比）和等待网络链接的时间，IE在每个主机名（像 http://www.microsoft.com/）下最多只创建两个当前的网络连接，而且要排队等待直到这个网络链接可用，通常，闭塞时间影响网页中图片加载时间的重要因素。
Connect is the
time required to create a TCP connection to the web server (or
proxy). If a secure HTTPS connection is being used this time
includes the SSL handshake process. Keep-Alive connections are
often used to avoid the overhead of repeatedly connecting to the
web server.
连接时间，是创建TCP连接到服务器或者代理服务器所花费的时间，如果一个包含SSL的安全的HTTPS连接存在，Keep-Alive链接经常被用到，以避免多次重复的连接WEB服务器。
Send is the time
required to send the HTTP request message to the server and will
depend on the amount of data that is sent to the server. For
example, long Send times will result from uploading files using an
HTTP POST
发送，是发送HTTP请求到服务器的时间，而且这个时间取决与发送请求的数据量的大小，例如，长的发送时间是由于用
PSOT方式上传文件造成的。
Wait is the idle
time spent waiting for a response message from the server. This
value includes delays introduced due to network latency and the
time required to process the request on the web
server.
等待，是花费在等待服务器响应消息的空闲时间，这个值包括网络延迟和服务器处理请求的时间。
Receive is the
time taken to read the response message from the server. This value
will be depend on the size of the content returned, network
bandwidth and whether HTTP compression was
used.
接收，是花费在从服务器读取响应消息的时间。这个值可以受到请求消息内容的大小，网络带宽和是否使用了HTTP压缩。
Cache
Read is the time taken to read the
content from the browser cache during (Cache) or 304
responses.
缓存读取，是花费在从浏览器缓存中读取内容或者304响应的时间。
TTFB (or Time To
First Byte) is the duration from the initial network request being
initiated by the browser to the first byte being received from the
server. It includes TCP connection time, the time to send the
request and the time taken to get the first byte of the response
message.
TTFB，是最初的网络请求被发起到从服务器接收到第一个字节这段时间，它包含了TCP连接时间，发送HTTP请求时间和获得响应消息第一个字节的时间。
|
