On Tue, Feb 17, 2009 at 8:19 PM, Valent Turkovic <valent.turkovic@xxxxxxxxx> wrote: > http://rudd-o.com/en/linux-and-free-software/tales-from-responsivenessland-why-linux-feels-slow-and-how-to-fix-that > > What is you comment? > Do not blame the operating system for badly coded apps. Only the app knows if caching is a good idea. Exerpt from "man -s 2 open" O_DIRECT (Since Linux 2.4.10) Try to minimize cache effects of the I/O to and from this file. In general this will degrade perfor- mance, but it is useful in special situations, such as when applications do their own caching. File I/O is done directly to/from user space buffers. The I/O is synchronous, that is, at the completion of a read(2) or write(2), data is guaranteed to have been transferred. See NOTES below for further dis- cussion. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
