Re: KAIO

Ben Thompson wrote: > Martin Fuerderer wrote: > >> For a system like this, KAIO will not have much benefit, as >> filesystem I/O is very efficiently done via Linux's file system >> caching. > > Interesting post. Can I infer from this comment that the Linux file > system caching works with raw devices? No, you can't infer from this posting that Linux file system caching works with raw devices. It might be true, but it is not fair or safe to assume that from Martin's comments. It really depends on how faithfully Linux implemented raw devices the same way that Unix did. Don't forget, until quite recently, raw devices were not an option on Linux. They were added; I don't know (because I haven't tried playing with them) whether they present any performance benefit over cooked devices or plain old cooked files. -- Jonathan Leffler #include <disclaimer.h> Email: jleffler@earthlink.net, jleffler@us.ibm.com Guardian of DBD::Informix v2003.04 -- http://dbi.perl.org/