Is the delay due to mechanical parts or the electronics gathering the fragments? Would that same delay still apply to a solid state drive? Since a solid state drive is really just a slower version of system memory (Please correct me if I am wrong). On Sun, Mar 16, 2008 at 5:29 PM, Andreas Dilger <adilger@xxxxxxx> wrote: > On Mar 16, 2008 15:13 -0500, William Tambe wrote: > > When designing a filesystem, is fragmentation really an issue if > > access to the disk can be done using scatter-gather DMA techics ? > > Yes!!! Scatter-gather only handles "fragmentation" in memory, where > seek time is zero. If there is fragmentation on disk you pay 8ms > for each fragment in the read. > > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > > _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
