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Showing posts tagged “browser”

Internet Explorer Static File Caching Defect

In going through cases we have with some customers, we’ve seen a few instances where Internet Explorer does not cache shared static resources. Within Load Tester, this problem becomes immediately apparent:

Note that the shared CSS, Javascript, and images are re-requested again on the About page and every other recorded page that uses them. Note also, these files don’t come back with a 304 (Not Modified), but instead the full content of the file is sent over and over again through a HTTP 200. Normally, the browser should load these files once, and not need to request them again within the … Continue reading »

A Unique Browser approach to Fast: Opera Turbo

We’ve seen that modern browsers have made great strides to improve efficiency in rendering and javascript performance. But, the differences seem to be less noticeable when the network is stubborn. On a recent trip, I ran into just this problem. During the evening, the hotel’s local Wi-Fi seemed at peak capacity, the DNS servers were sluggish, and just getting connections opened often added a couple seconds. Getting onto common sites like Slashdot seemed to take 30 seconds or more from the overburdened local connection.
This seemed like a golden opportunity to try out one of Opera’s new features: Opera … Continue reading »

Load Testing with IE 8.0, Firefox 3.5

The performance improvements in the latest browsers (Internet Explorer 8.0 and Firefox 3.5) have been eagerly awaited for many months…though they come at a price.

Memory consumption and reclamation – Chrome vs. Firefox

I reboot my laptop as infrequently as possible – which means that I keep Firefox running for weeks without restarting. At least, I would prefer to. But the longer it runs, the more memory it gobbles. The only way to reclaim it is to restart.
So when I read about the tab-isolation feature in Googles new Chrome browser which uses a separate process for each tab, it peaked my interest. I installed Chrome and tried a very quick (and not very scientific) test, as described below.
Firefox had been open for a few days and currently had 8 tabs open. I am … Continue reading »

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