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Posts Tagged ‘gzip’
This paper is an extension of the work done for another article that highlighted the performance benefits of retrieving uncompressed and compressed objects directly from the origin server. I wanted to add a proxy server into the stream and determine if proxy servers helped improve the performance of object downloads, and by how much.
Using the [...]
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- Tags: ads, apache, app, ARIN, bandwidth, cache-control, Cacheability, caching, client, compress, compression, control, corporate, data, EAD, extension, gzip, HTML, HTTP, IE, IM, improvement, IP, it, LAN, Linux, local proxy server, mod_gzip, Om, One, optimize, origin server, Pages, performance, performance improvement, pr, proxy, proxy server, run, server, the Origin, The origin server, traffic, web, web page download times, wordpress
How much improvement can you see with compression? The difference in measured download times on a very lightly loaded server indicates that the time to download the Base Page (the initial HTML file) improved by between 1.3 and 1.6 seconds across a very slow connection when compression was used.
Base Page Performance
There is a slightly slower [...]
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- Tags: apache, caching, compress, compressing, compression, deflate, gzip, HTML, LAN, Linux, loaded server, PHP, SCSI, Web server, Web server administrators
mod_gzip Compile Instructions
3 Oct 2006The last time I attempted to compile mod_gzip into Apache, I found that the instructions for doing so were not documented clearly on the project page. After a couple of failed attempts, I finally found the instructions buried at the end of the ChangeLog document.
I present the instructions here to preserve your sanity.
Before you can [...]
NOTE: This hack is only relevant to Apache 2.0.44 or lower. Starting with Apache 2.0.45, the server contains the DeflateCompressionLevel directive, which allows for user-configured compression levels in the httpd.conf file.
One of the complaints leveled against mod_deflate for Apache 2.0.44 and below has been the lower compression ratio that it produces when compared to mod_gzip [...]
In a previous paper, the use of mod_gzip to dynamically compress the output from an Apache server. With the growing use of the Apache 2.0.x family of Web servers, the question arises of how to perform a similar GZIP-encoding function within this server. The developers of the Apache 2.0.x servers have included a module in [...]
I have been running the GrabPERF Compression and Performance study for less than a week, but I thought that I should share some of the initial results with everyone.
As you can see above, the byte transmission savings gained by some sites is pretty astounding. Google News sends a pages with a median weight of near [...]
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- Tags: ARIN, bandwidth, client, compress, compression, Google, GrabPERF, gzip, HTTP, IE, IM, IP, it, measurement, media, Om, One, Pages, performance, pr, run, Technorati, web, Web+performance
Ok, the Blogger blogs all use GZIP compression.
BUT! The Blogger.com homepage does not.
Ummm…attention to detail? Anyone?
Technorati Tags: Blogger, Upgrade, HTTP+Compression, Web+compression, QA, GrabPERF, Web+Performance
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- Tags: attention, blog, compress, compression, GrabPERF, GrabPERF.org, gzip, HTTP, IP, it, LAN, Om, One, performance, PHP, pr, Technorati, web, Web+performance
GrabPERF: GZIP Performance Experiment Revisited
In: Uncategorized
23 Aug 2006A few years ago, I wrote an article on how GZIP compression improved Web performance. Don Marti at the Linux Journal was a great editor, and eventually, the article ended up in the online version of the Magazine.
At the time, I used Ian Holsman’s webperf.org (now renamed ITScales) to capture the data. Now that I [...]
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- Tags: compress, compression, data, Google, GrabPERF, GrabPERF.org, gzip, HTML, HTTP, IM, Internet, IP, it, LAN, leave, Linux, Om, online, performance, PHP, pr, Technorati, web, Web Performance, Web+performance, WebPerformance.Org
Dear PodTech…Part 2:
In: Blogging| GrabPERF| Web Performance
13 Jun 2006Dear PodTech:
Say thank you.
HTTP/1.1 302 Found
Date: Tue, 13 Jun 2006 19:18:11 GMT
Server: Apache/2.0.53 (Fedora)
Location: http://www.podtech.net
Content-Length: 283
Content-Type: text/html; charset=iso-8859-1
HTTP/1.1 200 OK
Server: Apache/2.0.53 (Fedora)
X-Powered-By: PHP/4.3.11
X-Pingback: http://www.podtech.net/xmlrpc.php
Status: 200 OK
Content-Type: text/html; charset=UTF-8
Vary: Accept-Encoding
Content-Encoding: gzip
Content-Length: 9233
Date: Tue, 13 Jun 2006 19:14:21 GMT
Connection: keep-alive
Performance got better, didn’t it?
Technorati Tags: GrabPERF, Web performance, PodTech
Yahoo Blog Search: Compression?
In: smp
11 Oct 2005I guess bandwidth doesn’t matter to Yahoo. They don’t use gzip/HTTP compression any more.
Ok, not completely true. It’s there on the Portal Page. But nowhere else.
<sigh>
I give up.
About this blog
Stephen Pierzchala is one of a cadre of crazy Canucks living in the United States. A 10-year veteran of the Web performance field, Stephen also writes on topics as diverse as branding and reputation, bipolar, and Web technologies.
Contact
stephen@pierzchala.com
+1.508.475.9490
Skype: stephen.pierzchala
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- Stephen Pierzchala: Cool. Now, if it's not supported by anyone, it should get pulled from the RFC. And now that the [...]
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