On Mon, Jul 29, 2013 at 12:16:11PM +0200, Heinz Mauelshagen wrote: > > Hi, > > dm-cache is a hot-spot cache. Ie. you need multiple accesses to the > same block to get it promoted into the cache (depending on the > policy plugin btw). > > If your patterns is one-time-only access type, it ain't warm the cache. Remember there's the page cache in front of dm-cache too. You may be accessing data many times, but not actually hitting the disk with your requests. - Joe -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
