Comment on HOWTO: Managing 30+ Servers by Improving Site Performance «...
[...] server setup and maintenance architecture (we’ve blogged about Setting up Proxy Servers and Managing 30+ servers previously). More recently we’ve been taking a harder look at how the site...
View ArticleComment on Squid Log Parsing for Proxy Billing by Improving Site Performance...
[...] ones that displayed aggregate statistics for all users. Looking at our usage table built on the squid logs it has nearly a million rows. Despite being indexed there’s still a lot of data to...
View ArticleComment on Buying VPS Systems by Xen, OpenVZ, Virtuozzo, and You! «...
[...] we’re incredibly geographically sensitive, we don’t always get to choose our hosting providers based on their virtualization technology. When we do have the choice, we strongly prefer Xen over...
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Steve...
Ping times are round-trip, so you must double the distances. This makes your miles per millisecond and percentage of the speed of light tables half their correct value.
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Paul...
Hi Steve, Well don’t we look silly. Thanks for pointing this out, I’ve corrected the later two tables. paul
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Tony Li
This would seem to reflect propagation delay. Did you do anything to factor in transmission delays (e.g., the time it takes to actually put the packet on the fiber)? The turnaround time at the other...
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Will...
Tony, These values are straight from ping without any modification, so they’ll include the time it takes to get to/from the copper as well as the time spent on the remote machine identifying the packet...
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Andy...
Reminds of the story of the 500 mile email. http://www.ibiblio.org/harris/500milemail.html
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by Leland
The reason for the transatlantic path is because peering always takes precedence over transit. We peer with packet exchange at the LINX in London, but do not have a session with them at Ashburn. I have...
View ArticleComment on Miles per Milisecond, a Look at the WonderProxy Network by JD Conley
The other thing to take into account is that ICMP is typically downgraded in priority in routers. You may want to try a custom UDP packet based test or to-the-metal TCP implementation (so you can track...
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