我有启用了mod_deflate
的apache。我想找出在启用和不启用mod_deflate
的情况下页面的大小,并比较大小方面的性能。在curl中,我似乎向服务器请求使用--compressed
压缩的内容并发送正常的内容,但似乎找不到该页面的大小。你知道怎么做吗?
curl --head http://site
HTTP/1.1 200 OK
Date: Wed, 08 Feb 2012 08:48:04 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.7a mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
X-Powered-By: PHP/5.2.12
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: PHPSESSID=ce39b051a9cd493cbe4a86056e11d61f; path=/
Vary: Accept-Encoding
Content-Type: text/html
curl --head --compressed http://site
HTTP/1.1 200 OK
Date: Wed, 08 Feb 2012 08:48:19 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.7a mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635
X-Powered-By: PHP/5.2.12
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: PHPSESSID=513b8ac5818fd043471c8aac44355898; path=/
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 20
Content-Type: text/html
发布于 2012-02-09 02:37:35
我认为获取大小的唯一可靠方法是实际下载文件。但是,curl为仅输出感兴趣的数据提供了一个非常方便的选项
-w/--write-out <format>
Defines what to display on stdout after a completed and successful operation.
[...]
size_download The total amount of bytes that were downloaded.
这意味着你可以这样做:
curl -so /dev/null http://www.whatsmyip.org/http-compression-test/ -w '%{size_download}'
输出:
8437
并获得压缩后的大小:
curl --compressed -so /dev/null http://www.whatsmyip.org/http-compression-test/ -w '%{size_download}'
输出:
3225
在此之后,您的比较应该是微不足道的。
发布于 2017-11-27 18:29:58
复制/粘贴准备就绪,用户可读
以下是基于@flesk answer和on this的脚本的人类可读版本:
#!/usr/bin/env bash
set -e
bytesToHuman() {
b=${1:-0}; d=''; s=0; S=(Bytes {K,M,G,T,E,P,Y,Z}iB)
while ((b > 1024)); do
d="$(printf ".%02d" $((b % 1024 * 100 / 1024)))"
b=$((b / 1024))
let s++
done
echo "$b$d ${S[$s]}"
}
compare() {
echo "URI: ${1}"
SIZE=$(curl -so /dev/null "${1}" -w '%{size_download}')
SIZE_HUMAN=$(bytesToHuman "$SIZE")
echo "Uncompressed size : $SIZE_HUMAN"
SIZE=$(curl --compressed -so /dev/null "${1}" -w '%{size_download}')
SIZE_HUMAN=$(bytesToHuman "$SIZE")
echo "Compressed size : $SIZE_HUMAN"
}
compare https://stackoverflow.com/q/9190190/1480391
输出:
URI: https://stackoverflow.com/q/9190190/1480391
Uncompressed size : 106.69 KiB
Compressed size : 24.47 KiB
https://stackoverflow.com/questions/9190190
复制相似问题