dawes@suphys.physics.su.OZ.AU (David Dawes) (03/06/91)
In article <1991Mar05.183924.15581@chinet.chi.il.us> les@chinet.chi.il.us (Leslie Mikesell) writes: > >BTW, I've considered setting up a loop-back mount just to be able to >get a read-only mount so I could do a backup without touching the >atime or ctime of the files, but I've been too lazy to try it. What >kind of performance do you get? I did a test, just reading a 12MB file both from the physical mount point, and the loopback mount point: sys real direct 13s 37s rfs 22s 76s (My system is Esix Rev.D, 25MHz 386DX, 100MB Conner IDE disk, ffs filesystems) I decided to try rfs loopback so I could get something like sym-links across filesystems. David -- ------------------------------------------------------------------------------ David Dawes (dawes@suphys.physics.su.oz.au) DoD#210 | Phone: +612 692 2639 School of Physics, University of Sydney, Australia | Fax: +612 660 2903 ------------------------------------------------------------------------------