On 27.05.2011 18:11, Rick Merrill wrote: --- Original Message ---
> Jay Garcia wrote: >> On 27.05.2011 10:08, Rick Merrill wrote: >> >> --- Original Message --- >> >>> Jay Garcia wrote: >>>> On 19.05.2011 18:03, Paul B. Gallagher wrote: >>>> >>>> --- Original Message --- >>>> >>>>> Jay Garcia wrote: >>>>> >>>>>> On 19.05.2011 15:56, Paul B. Gallagher wrote: >>>>>> >>>>>> --- Original Message --- >>>>>> >>>>>>> Jay Garcia wrote: >>>>>>> >>>>>>>> Since a prefetched page(s) is/are put to cache, I don't know if >>>>>>>> there is any indication that those pages are the ones >>>>>>>> "prefetched". >>>>>>>> >>>>>>>> And .. I think that this prefetch function is only workable as >>>>>>>> intended with a slow dialup type connection. My main website >>>>>>>> with over 800 pages is quickly accessed to any page from any page >>>>>>>> quite quickly. I don't really think I could tell the difference >>>>>>>> with/without prefetch. >>>>>>> >>>>>>> I like to watch videos online, and even with a broadband >>>>>>> connection (about 25 MB/min or 1500 kBps), they can sometimes take >>>>>>> awhile to load (probably due to slow/busy servers). For example, if >>>>>>> my 36-minute program is broken into three 12-minute chunks, I >>>>>>> routinely open three tabs, and launch all three chunks, then >>>>>>> quickly pause the second and third ones, allowing them to load >>>>>>> without playing. I view the first one, and by the time I'm done, >>>>>>> the second is ready to go. Automatic prefetching could come in >>>>>>> handy here, especially since the website links the second and third >>>>>>> chunks to the first and I have bandwidth to burn. >>>>>> >>>>>> Prefetch does nothing the first time you access the videos. And I >>>>>> don't think that's the purpose of prefetching anyway. Prefetch as I >>>>>> understand it is for pages with multiple links referencing other >>>>>> pages on the same site, >>>>> >>>>> ... which is exactly the case I'm describing. The page that embeds >>>>> part >>>>> 1 of the vid has a link to part 2, and I could watch all of part 1 and >>>>> then click the link, or else I could right-click the link and say >>>>> "open >>>>> in new tab." The second option is the one I choose -- I'm doing manual >>>>> prefetching, so that when I'm finished with part 1, part 2 is >>>>> loaded and >>>>> ready to go. Some of the sites I visit even recommend this buffering >>>>> technique to avoid choppiness when a server can't keep up. >>>>> >>>>>> e.g., the prefetch link in the header of the index page would >>>>>> reflect<link rel="prefetch" ..>. >>>>> >>>>> ... and that's the answer to the OP's question: look in the source >>>>> code >>>>> for<link rel="prefetch" ...>. If it has such a link, it's set up for >>>>> prefetching; if not, it's not. >>> >>> Has anyone seen or written such source code? This is the most logical >>> response, >>> and it presumably creates the desired result of making the remainder of >>> the site >>> faster to access. >>> >>>> You're not actually prefetching by definition, >>> >>> No. Getting data before it is needed IS "prefetching." >>> e.g. http://en.wiktionary.org/wiki/prefetch >>> >>>> just loading in another >>>> tab but accomplishing 'basically' the same thing. >>> >>> No. it is not another "tab". >>> e.g. http://en.wiktionary.org/wiki/prefetch >>> >>> >> I can't think offhand of >> prefetching any faster than from cache - memory or from disk. > > wE HAVE agreed that prefetch fill cache. But that is not always what you > want. > Nevertheless, if you are browsing a site, that site will *appear* to the > user to be fast because of the pre-cached data. > Unless there is some other area where prefetched data is stored, it comes from cache as far as I know. And if your connection speed is high speed (HSI) then cached data is basically useless. My cache has been zero sized for years. -- *Jay Garcia - Netscape Champion* www.ufaq.org Netscape - Firefox - SeaMonkey - Thunderbird _______________________________________________ support-seamonkey mailing list [email protected] https://lists.mozilla.org/listinfo/support-seamonkey
