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Posts Tagged ‘deflate’
TechCrunch: Ever heard of HTTP Compression?
In: Blogging| GrabPERF| RANTING| Web Performance
16 Jan 2007It’s always funny when somewhat tech-savvy folks purposely make their bandwidth bills higher than they need to be.
Here’s TechCrunch’s HTTP header response.
HTTP/1.1 200 OK
Date: Tue, 16 Jan 2007 16:02:23 GMT
Server: Apache/2.2.3 (Debian) DAV/2 SVN/1.4.2 PHP/5.2.0-8 mod_ssl/2.2.3 OpenSSL/0.9.8c
X-Powered-By: PHP/5.2.0-8
X-Pingback: http://www.techcrunch.com/xmlrpc.php
Status: 200 OK
Transfer-Encoding: chunked
Content-Type: text/html; charset=”UTF-8″
Port80 Software’s Compression Checker gives us some idea how much bandwidth Mr. [...]
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 [...]
- Comments
- Tags: apache, caching, compress, compressing, compression, deflate, gzip, HTML, LAN, Linux, loaded server, PHP, SCSI, Web server, Web server administrators
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 [...]
Web Performance Domains for Sale
In: Life| Technology| Web Performance
6 Mar 2006I just had a look at the list of domains that I own and realize thatI want/need to clean house. There are 3 domains that I want to keep,and 9 that I am looking to get rid of.
Domains that I want to unload include:
mod-deflate.net
mod-deflate.org
performancecore.org
performancecorps.org
performancefreaks.org
performanceguru.org
performanceindex.org
searchindex.org
webcaching.org
webcompression.org
webperformance.org
Currently asking $2,000 each for webperformance.org, webcaching.org, searchindex.org, performanceindex.org, and webcompression.org, and [...]
- Comments
- Tags: caching, compress, compression, current, deflate, HTTP, it, Om, performance, pr, search, Technorati, the other, web, Web Performance, WebPerformance.Org
Opera: Free Browser, Web Site Issues?
In: smp
22 Sep 2005Opera, my #2 browser choice is now free. Go get it!
Now, Netcraft reports that the site is slowing down as a result. I am also measuring it using GrabPERF
—- START RANT
Now, if they turned on compression and had some explicit cache-control information, they might not be doing to badly.
HTTP/1.1 200 OK
Date: Thu, 22 Sep 2005 [...]
Weblogs.com Not Using HTTP Compression
In: smp
2 Sep 2005Ummm, this one floored me. If Weblogs.com wants to reduce their traffic, turn on mod_deflate in Apache 2.0.
HTTP/1.1 200 OK
Date: Fri, 02 Sep 2005 14:13:10 GMT
Server: Apache/2.0.46 (Red Hat)
Last-Modified: Fri, 02 Sep 2005 14:09:54 GMT
ETag: “ac0b3-3559d-840c3080″
Accept-Ranges: bytes
Content-Length: 218525
Connection: close
Content-Type: text/html; charset=UTF-8
I know it won’t solve everything, but it’s a start.
More on Technorati Performance Woes
In: GrabPERF
11 Jul 2005Ok, one of the tests that the GrabPERF System is running is doing a simple search on the Technorati site.
Ouch.
Now, as I mentioned before, Technorati has some interesting things going on in their www servers. For the Web geeks out there, here is what their headers look like.
HTTP/1.0 200 OK
Date: Mon, 11 Jul 2005 16:15:47 [...]
- Comments
- Tags: apache, cache-control, client, client-side, compress, compressing, compression, content, control, deflate, EAD, GrabPERF, gzip, HTML, HTTP, IE, IM, IP, it, LAN, maintain, media, mod_gzip, Om, One, performance, persistent, persistent connections, PHP, pr, run, search, server, Technorati, web, Web Performance, Web+performance
Symantec Firewall — Problems with Accept-Encoding Headers
In: smp
10 Mar 2005Here is a little tidbit that we discovered while trying to debug an issue at work. One of my colleagues found that the Symantec/Norton Personal Firewall/Internet Security mangles the “Accept-Encoding” header sent out by any application — browser, streaming media, etc.
More can be found here.
This is a serious problem, and has a negative effect on [...]
SiteMeter appears to be hosed
In: smp
17 Dec 2004For those of you ourt there that use SiteMeter, I need some verification that the service is unreachable right now. The icon does not load on my Blog page (you may have noticed this if you are reading this is a browser) and when you do get to the site, the stats database is unreachable.
Wouldn’t [...]
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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