Hi *, the file-backed `ubd` devices in my UML instances are terribly slow, and generate a lot of "iowait" load on the host. It looks like as if filesystems mounted from `ubd` devices were using the `sync` option.
This happens with kernels downloaded from uml.devloop.org.uk, as well with kernels that I compiled myself (but using basically the same config as the devloop ones); I tried 2.6.38.x and 2.6.39.x (for some random values of "x"). This does *not* happen with Debian/Ubuntu's kernel 2.6.32.5, which unfortunately exhibit a filesystem corruption bug. The host is in any case Ubuntu "natty", running 2.6.39-3-generic. Is this expected? Thanks, Riccardo ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! http://www.accelacomm.com/jaw/sfnl/114/51491232/ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
