On 25/03/2010 00:11, Krishna Srinivas wrote: > On Wed, Mar 24, 2010 at 10:38 AM, Ian Rogers > <ian.rogers at contactclean.com> wrote: > >> >> In a LAMP situation I'd be wanting to use io-cache but there's also a lot of >> small files. Having both io-cache and the quick-read cache would just mean >> the files are double cached - using up twice the memory needed as well as an >> extra set of memory copies to shuffle things around. >> > Good point :) you will have this double cache problem if you use > iocache above quickread. But if you use quick read above iocache, only > quickread caches it (as iocache will never get any open/read calls for > the small files as quickread fetches all the data in the lookup call) > > Hence to avoid the double caching problem always use quickread on top > of iocache. (i.e in the volfile quickread will be below iocache) > > Krishna > Good tip, thanks for that :-) > >> like quick-read to be deprecated and it's functionality added to io-cache >> Argh, I hate making punctuation typos!! %-} Ian
