Posts Tagged ‘Web+performance

A few years ago, I wrote an article ablout how to best set up Web server cache-control messages to take advantage of this free form of content distribution. Until now, it has only existed as a PDF file.
Last night, I sent a copy to Kevin Burton of TailRank in response to some of his recent [...]

A 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 [...]

Apparent using HTTP compression alongside HTTP/1.1 will cause certain versions of MSIE 6.0 to implode. [here]
I personally think this was because the NSA power shortage was making it too hard for the spooks to snoop on compressed Web traffic. [here]
Via: Port80 Software
PS: No, I won’t turn off compression because Microsoft did something really stupid.
Technorati Tags: [...]

The new GrabPERF Agent code, with support for plain text or regular expression content matching, is now in production on all active measurement agents.
I added one more feature before I rolled out the new code: when a content match error occurs, the server headers and HTML content for 14 days.
I have not exposed this feature [...]

Michael Arrington’s latest Crunch product, CrunchGear, is getting beat up this morning.

Ouch!
In the past, these would not appear as errors, but the new text match feature in GrabPERF is working like a charm. The new code is up on 3 of the 5 measurement agents, and the remaining 2 should be updated by tomorrow.
Technorati Tags: [...]

I now have a true live example of how text matching can provide information on issues where a successful page is returned.

In this example, the TEST AGENT returned a Text Match Failed error, while 3 of the agents running the current production code said the page was a success.
How do I know that the TEST [...]

Ok folks, this is it. I have finally truly woken up from my slumber and I am starting to add features to the system.
Today’s latest: content | text matching.
This is a critical step in the development, as it allows for quality checking against the returned data. Currently, I can only catch errors under 3 defined [...]

So, In my ongoing effort to be more transparent about the data that I find in GrabPERF, I have produced an Excel spreadsheet of Jan 21 – Feb 18 2006 Aggregated Data.
Top Twenty – Performance

Top Twenty – Availability

I hope to post this data more frequently in the future.
Technorati Tags: GrabPERF, Web Performance, Performance Indicators, analytics, [...]

The TypePad application is currently experiencing performance degradation.
You could say that.
CLICK IMAGE

UPDATE: Looks like TypePad has returned to something resembling normal. Slow, but normal.
CLICK IMAGE

UPDATE: Geek News Central commiserates with TypePad. [here]

Technorati: typepad, web performance, six apart
IceRocket: typepad, web performance, six apart

The weekly GrabPERF Search Index Results are in.
NOTES:

Level3/Cogent Peering Dispute affected all results this week

Week of October 04-10, 2005

TEST RESULT SUCCESS [...]


About this blog

Stephen Pierzchala is one of a 10-year veteran of the Web performance field who also writes on topics that interest his non-linear world-view.

Contact

stephen@pierzchala.com

+1 (508) 410-3865