On Tuesday 12 April 2005 16:37, itamar wrote: > How to make a guest machine running more fast ? > > > CONFIG_BLK_DEV_UBD_SYNC =Y or CONFIG_BLK_DEV_UBD_SYNC=N The second is surely faster but less safe. > What´s the best for a uml provider ? For recent (IIRC >= 2.6.9, at least) the difference of performance is acceptable; however, in case of a host crash (a guest crash shouldn't create a problem), with the second one you would get big problems on guest reboot (especially if you use journaled filesystems, especially like reiserfs, because they want to be able to force datas out on the disk). -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade
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