Re: [Asrg] RFC 6471 and "listing the Internet" as a punishment

[Douglas Otis <[e-mail]>]

On 1/27/12 4:51 PM, Dave Warren wrote:
> On 1/26/2012 10:27 AM, Douglas Otis wrote:
>> To support touted performance feature, chrome aggressively resolves 
>> links in advance.  This strategy makes chrome sensitive to DNS 
>> performance.  Cache in their recursive resolvers is kept current 
>> ahead of requests.  People addicted to speed.  ;^)
>
> I might be being argumentative for it's own sake (sorry), but doesn't 
> this make Chrome less sensitive to DNS performance rather than more 
> sensitive?
>
> With a browser that doesn't pre-cache DNS lookups, the user is aware 
> of DNS latency every time they click a link and with every resource 
> that the browser loads from a different domain. Conversely, with 
> caching, in most cases pre-caching every link on a page will take 
> longer than it takes the user to find a link and click on it even if 
> the DNS cache is extremely slow.
>
> Now I'd agree that faster DNS servers makes a noticeable difference 
> when browsing since many websites load content from a dozen or more 
> hostname, but I'd argue that Chrome's precaching makes it less 
> sensitive to slow DNS queries.
Dear Dave,

When DNS transactions attempt to include all possible choices, necessary 
transactions are at a greater risk of being queued, rather than being 
ready in advance.  Chrome offers a switch setting to disable this 
behavior that may actually result in reduced performance.

Regards,
Doug Otis