On Mon, Jun 23, 2014 at 07:04:53PM +0100, David Pitt wrote: > Peter Young, on 23 Jun, wrote: > > > I've been using the disc cache on RISC OS 2.19, ARMini, and I seem to have > > found some downsides to it, and I wonder if (a) I'm doing it correctly and > > (b) if it's worth the occasional faster opening of some sites. > > > > If I load, for instance, http://www.bbc.co.uk/news/ as the first site of a > > session, it loads maybe a little faster, but then I get intermittent > > hourglass activity for sometimes up to thirty seconds, during which I > > can't do anything else. There are several other sites, for instance > > Wikipedia home page, which do the same. And the next day the same happens. > > I have found much the same, a really good example of this is the Daily > Mail's heavy weight site.
Ultimately, my advice is to not visit this service. This stands regardless of any cache issues that may exist :) > http://www.dailymail.co.uk/home/index.html > > Writes to the Raspberry Pi's SD Card are so slow that !Cache is not going to > be good news on it. It is better with !Cache on a Fat32 harddisc connected > to the Pi and on the Iyonix but is still an issue. Indeed, SD has poor write performance almost anywhere, like most flash-based devices. > Overall I was not persuaded that the cache results is any meaningful speed > up and could even slow things up, not just on the Raspberry Pi but also on > the Iyonix and VRPC on a Windows 7 laptop with an SSD. Certainly on UNIX and BeOS, it seems to provide a significant performance boost, but this is probably because of their far superior IO layers. On RISC OS, the disc cache *may* only be a win for people on slow connections. B.
